[et_pb_section fb_built=”1″ admin_label=”Landing Hero” _builder_version=”4.16″ background_color=”rgba(10,10,10,0.54)” background_image=”https:\/\/nalonminerals.com\/wp-content\/uploads\/2020\/11\/Foto-values.jpg” background_blend=”overlay” custom_padding=”100px|0px|16px|0px||” animation_style=”slide” animation_direction=”top” animation_intensity_slide=”2%” locked=”off” global_colors_info=”{}”][et_pb_row column_structure=”1_2,1_2″ _builder_version=”4.16″ custom_margin=”|auto|95px|auto||” custom_padding=”||0px|||” custom_width_px=”1280px” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text _builder_version=”4.16″ header_font=”|on|||” header_font_size=”42px” header_line_height=”1.3em” background_layout=”dark” custom_padding=”|||” header_font_size_last_edited=”off|desktop” locked=”off” global_colors_info=”{}”]<\/p>\n
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With our biogas desulphurisation solutions, we remove hydrogen sulphide (H\u2082S) at source to produce clean biogas, protect equipment, reduce costs and maximise energy efficiency, ensuring safe, cost-effective and environmentally friendly processes.<\/p>\n
[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ admin_label=”Learn by Doing” _builder_version=”4.16″ custom_padding=”3px|0px|1px|0px||” global_colors_info=”{}”][et_pb_row column_structure=”1_2,1_2″ _builder_version=”4.16″ module_alignment=”center” custom_padding=”90px|0px|90px|0px” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text _builder_version=”4.16″ header_font=”||||||||” header_2_font=”|700|||||||” header_2_text_color=”#000000″ header_2_font_size=”36px” header_2_line_height=”1.3em” custom_margin=”||20px|” animation_style=”slide” animation_direction=”bottom” animation_intensity_slide=”10%” locked=”off” global_colors_info=”{}” header_font_size__hover=”30px” header_font_size__hover_enabled=”30px” header_letter_spacing__hover=”0px” header_letter_spacing__hover_enabled=”0px” header_text_shadow_style__hover=”none” header_text_shadow_style__hover_enabled=”none” header_text_shadow_color__hover=”rgba(0,0,0,0.4)” header_text_shadow_color__hover_enabled=”rgba(0,0,0,0.4)”]<\/p>\n
[\/et_pb_text][et_pb_divider color=”#7cda24″ divider_weight=”4px” disabled_on=”on|on|off” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” max_width=”40px” module_alignment=”left” custom_margin=”||10px|” animation_style=”zoom” animation_direction=”left” saved_tabs=”all” locked=”off” global_colors_info=”{}”][\/et_pb_divider][et_pb_text _builder_version=”4.16″ text_font=”||||||||” text_text_color=”#8f8f8f” text_font_size=”16px” text_line_height=”1.9em” header_font=”||||||||” header_4_font=”|700|||||||” header_4_font_size=”16px” header_4_line_height=”1.9em” animation_style=”zoom” animation_intensity_zoom=”6%” locked=”off” global_colors_info=”{}”]<\/p>\n
This step is key to optimising biogas quality, as H\u2082S is a corrosive and toxic gas that must be removed before biogas can be used as an energy source. In the current transition to renewable energy, achieving clean biogas through biogas desulphurisation has become essential to harness this resource efficiently and safely. <\/p>\n
[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_image src=”https:\/\/nalonminerals.com\/wp-content\/uploads\/2020\/11\/Foto-cabecera-quienes-somos-scaled.jpeg” title_text=”planta biogas nalon minerals” align_tablet=”center” align_phone=”” align_last_edited=”on|desktop” _builder_version=”4.16″ min_height=”146.2px” animation_style=”zoom” animation_direction=”left” animation_delay=”100ms” animation_intensity_zoom=”20%” border_radii=”on|15px|15px|15px|15px” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”2_5,3_5″ admin_label=”Build Your Portfolio” _builder_version=”4.16″ custom_padding=”0px|0px|90px|0px||” global_colors_info=”{}”][et_pb_column type=”2_5″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_image src=”https:\/\/nalonminerals.com\/wp-content\/uploads\/2025\/02\/setiles-nalon-minerals-2-2.jpg” alt=”Modern industrial gas treatment unit with vertical desulphurization tower and pipelines.” title_text=”setiles nalon minerals-2″ align_tablet=”center” align_phone=”” align_last_edited=”on|desktop” _builder_version=”4.16″ max_width=”90%” module_alignment=”center” animation_style=”zoom” animation_direction=”right” animation_delay=”100ms” animation_intensity_zoom=”20%” border_radii=”on|15px|15px|15px|15px” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”3_5″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text _builder_version=”4.16″ header_font=”||||||||” header_2_font=”|700|||||||” header_2_text_color=”#000000″ header_2_font_size=”36px” header_2_line_height=”1.3em” custom_margin=”||20px|” animation_style=”slide” animation_direction=”bottom” animation_intensity_slide=”10%” locked=”off” global_colors_info=”{}” header_font_size__hover=”30px” header_font_size__hover_enabled=”30px” header_letter_spacing__hover=”0px” header_letter_spacing__hover_enabled=”0px” header_text_shadow_style__hover=”none” header_text_shadow_style__hover_enabled=”none” header_text_shadow_color__hover=”rgba(0,0,0,0.4)” header_text_shadow_color__hover_enabled=”rgba(0,0,0,0.4)”]<\/p>\n
[\/et_pb_text][et_pb_divider color=”#7cda24″ divider_weight=”4px” disabled_on=”on|on|off” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” max_width=”40px” module_alignment=”left” custom_margin=”||10px|” animation_style=”zoom” animation_direction=”left” saved_tabs=”all” locked=”off” global_colors_info=”{}”][\/et_pb_divider][et_pb_text _builder_version=”4.16″ text_font=”||||||||” text_text_color=”#8f8f8f” text_font_size=”16px” text_line_height=”1.9em” header_font=”||||||||” header_4_font=”|700|||||||” header_4_font_size=”16px” header_4_line_height=”1.9em” animation_style=”zoom” animation_intensity_zoom=”6%” locked=”off” global_colors_info=”{}”]<\/p>\n
Desulphurisation of biogas is essential for several reasons:<\/p>\n
In anaerobic digestion, sulphur compounds in organic matter (e. g. sulphates and amino acids) are biologically converted into hydrogen sulphide (H\u2082S). In other words, H\u2082S occurs naturally in raw biogas as a result of the microbiological process that generates methane, so all raw biogas contains a certain proportion of this pollutant gas. <\/p>\n
H\u2082S is highly toxic and corrosive. In high concentrations it can seriously damage human health and generate odours even at low levels. In addition, it causes accelerated corrosion of engines, piping and cogeneration equipment by combining with moisture to form hydrogen sulphide. In short, without removing H\u2082S, biogas would be hazardous to equipment, people and the environment. <\/p>\n
For reasons of operational safety and environmental regulation, it is mandatory or highly recommended to remove almost all H\u2082S from biogas prior to energy utilisation. Complying with these standards not only avoids penalties and corrosion, but also ensures a methane gas with high calorific value and commercial value. <\/p>\n
[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ admin_label=”Testimonial” _builder_version=”4.16″ background_color=”rgba(0,0,0,0.53)” background_image=”https:\/\/nalonminerals.com\/wp-content\/uploads\/2025\/06\/acido-sulfhidrico.webp” background_blend=”overlay” custom_margin=”|||” custom_padding=”0px||0px|” box_shadow_style=”preset7″ box_shadow_horizontal=”0px” box_shadow_vertical=”80px” box_shadow_color=”#ffffff” locked=”off” global_colors_info=”{}”][et_pb_row column_structure=”1_2,1_2″ make_equal=”on” custom_padding_last_edited=”on|tablet” _builder_version=”4.16″ max_width=”1280px” custom_padding=”0px|0px|0px|0px” custom_padding_tablet=”79px|10%|0px|10%||” custom_padding_phone=”79px|0.3%|0px|0.5%||” use_custom_width=”on” custom_width_px=”1280px” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”150px||80px|” custom_padding_tablet=”100px|||” custom_padding_phone=”” custom_padding_last_edited=”on|phone” global_colors_info=”{}” padding_tablet=”100px|||” padding_last_edited=”on|phone” custom_padding__hover=”|||” padding_phone=”100px|||”][et_pb_text _builder_version=”4.27.4″ header_font=”||||||||” header_3_font=”|700|||||||” header_3_font_size=”36px” header_3_line_height=”1.3em” background_layout=”dark” custom_margin=”||20px|” animation_style=”slide” animation_direction=”bottom” animation_intensity_slide=”10%” locked=”off” global_colors_info=”{}” header_font_size__hover=”30px” header_font_size__hover_enabled=”30px” header_letter_spacing__hover=”0px” header_letter_spacing__hover_enabled=”0px” header_text_shadow_style__hover=”none” header_text_shadow_style__hover_enabled=”none” header_text_shadow_color__hover=”rgba(0,0,0,0.4)” header_text_shadow_color__hover_enabled=”rgba(0,0,0,0.4)” header_2_font_size__hover=”26px” header_2_font_size__hover_enabled=”26px” header_2_letter_spacing__hover=”0px” header_2_letter_spacing__hover_enabled=”0px” header_2_line_height__hover=”1em” header_2_line_height__hover_enabled=”1em” header_2_text_shadow_style__hover=”none” header_2_text_shadow_style__hover_enabled=”none” header_2_text_shadow_color__hover=”rgba(0,0,0,0.4)” header_2_text_shadow_color__hover_enabled=”rgba(0,0,0,0.4)”]<\/p>\n
[\/et_pb_text][et_pb_text _builder_version=”4.16″ text_font=”|600|||||||” text_text_color=”#ffffff” text_font_size=”16px” text_line_height=”1.9em” animation_style=”slide” animation_direction=”top” animation_intensity_slide=”6%” locked=”off” global_colors_info=”{}”]<\/p>\n
Our product N-Bio has been specifically developed to capture H\u2082S in a simple and economical way. N-Bio is an iron-based compound (functional oxides and hydroxides) that is added directly to the fermentation reactor. <\/p>\n
The technical benefits of N-Bio are remarkable: by removing H\u2082S at source, it improves reactor productivity and final biogas quality, and acts as a process stabiliser ( buffer<\/em> effect). It also brings advantages in terms of operation and maintenance: by not requiring external equipment and expensive consumables, operating costs are reduced. <\/p>\n [\/et_pb_text][et_pb_button button_url=”https:\/\/nalonminerals.com\/en\/n-bio-solutions\/” button_text=”See N-Bio” button_alignment=”left” _builder_version=”4.16″ custom_button=”on” button_text_size=”16px” button_text_color=”#ffffff” button_bg_color=”#7cda24″ button_border_width=”10px” button_border_color=”#7cda24″ button_border_radius=”100px” button_letter_spacing=”1px” button_font=”|on||on|” button_use_icon=”off” custom_margin=”20px|||” button_letter_spacing_hover=”2px” saved_tabs=”all” locked=”off” global_colors_info=”{}” button_text_size__hover_enabled=”off|desktop” button_text_size__hover=”null” button_one_text_size__hover_enabled=”off” button_one_text_size__hover=”null” button_two_text_size__hover_enabled=”off” button_two_text_size__hover=”null” button_text_color__hover_enabled=”off|desktop” 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text_line_height=”1.9em” header_font=”||||||||” header_4_font=”|700|||||||” header_4_font_size=”16px” header_4_line_height=”1.9em” animation_style=”zoom” animation_intensity_zoom=”6%” locked=”off” global_colors_info=”{}”]<\/p>\n The use of an iron hydroxide compound stands out for several technical and operational advantages in H\u2082S removal. Our N-Bio<\/a> range is proof of this, offering an effective and sustainable solution for biogas desulphurisation.<\/p>\n [\/et_pb_text][\/et_pb_column][et_pb_column type=”2_3″ specialty_columns=”2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” parallax__hover=”off” parallax_method__hover=”on” custom_padding__hover=”|||”][et_pb_row_inner column_structure=”1_2,1_2″ use_custom_gutter=”on” gutter_width=”1″ _builder_version=”4.16″ custom_padding=”0px|0px|0px|0px” animation_style=”zoom” animation_intensity_zoom=”6%” box_shadow_style=”preset1″ box_shadow_vertical=”10px” box_shadow_blur=”60px” box_shadow_color=”rgba(0,200,130,0.12)” global_colors_info=”{}”][et_pb_column_inner type=”1_2″ saved_specialty_column_type=”2_3″ module_class=”et_pb_column_1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” parallax__hover=”off” parallax_method__hover=”on” module_class__hover=”et_pb_column_1_2″ custom_padding__hover=”|||”][et_pb_blurb title=”More efficient biogas desulphurisation process” url=”#” icon_placement=”left” image_icon_width=”64px” content_max_width=”1100px” _builder_version=”4.16″ header_font=”|on|||” header_text_color=”#2e2545″ header_line_height=”1.5em” body_text_color=”#8f8f8f” body_line_height=”1.9em” background_color=”#ffffff” custom_margin=”|||” custom_padding=”30px|30px|30px|30px” animation_style=”zoom” animation_direction=”bottom” animation_intensity_zoom=”20%” animation_starting_opacity=”100%” box_shadow_style=”preset7″ box_shadow_horizontal=”-1px” box_shadow_vertical=”-1px” box_shadow_color=”rgba(71,74,182,0.12)” image_max_width=”64px” locked=”off” global_colors_info=”{}”]<\/p>\n Desulphurisation of biogas with our compound allows an earlier uptake of H\u2082S. <\/p>\n [\/et_pb_blurb][et_pb_blurb title=”Improved productivity in the reactor” url=”#” icon_placement=”left” image_icon_width=”64px” content_max_width=”1100px” _builder_version=”4.16″ header_font=”|on|||” header_text_color=”#2e2545″ header_line_height=”1.5em” body_text_color=”#8f8f8f” body_line_height=”1.9em” background_color=”#ffffff” custom_margin=”|||” custom_padding=”30px|30px|30px|30px” animation_style=”zoom” animation_direction=”bottom” animation_intensity_zoom=”20%” animation_starting_opacity=”100%” box_shadow_style=”preset7″ box_shadow_horizontal=”-1px” box_shadow_vertical=”-1px” box_shadow_color=”rgba(71,74,182,0.12)” image_max_width=”64px” locked=”off” global_colors_info=”{}”]<\/p>\n More biogas with higher percentage of methane. Lower CAPEX and OPEX. <\/p>\n [\/et_pb_blurb][et_pb_blurb title=”Buffer effect” url=”#” icon_placement=”left” image_icon_width=”64px” content_max_width=”1100px” _builder_version=”4.16″ header_font=”|on|||” header_text_color=”#2e2545″ header_line_height=”1.5em” body_text_color=”#8f8f8f” body_line_height=”1.9em” background_color=”#ffffff” custom_margin=”|||” custom_padding=”30px|30px|30px|30px” animation_style=”zoom” animation_direction=”bottom” animation_intensity_zoom=”20%” animation_starting_opacity=”100%” box_shadow_style=”preset7″ box_shadow_horizontal=”-1px” box_shadow_vertical=”-1px” box_shadow_color=”rgba(71,74,182,0.12)” image_max_width=”64px” locked=”off” global_colors_info=”{}”]<\/p>\n The kinetics of the N-Bio<\/a> reaction gives it a buffering effect that prevents rapid rises in H\u2082S levels.<\/p>\n [\/et_pb_blurb][et_pb_blurb title=”Corrosion risk minimised” url=”#” icon_placement=”left” image_icon_width=”64px” content_max_width=”1100px” _builder_version=”4.16″ header_font=”|on|||” header_text_color=”#2e2545″ header_line_height=”1.5em” body_text_color=”#8f8f8f” body_line_height=”1.9em” background_color=”#ffffff” custom_margin=”|||” custom_padding=”30px|30px|30px|30px” animation_style=”zoom” animation_direction=”bottom” animation_intensity_zoom=”20%” animation_starting_opacity=”100%” box_shadow_style=”preset7″ box_shadow_horizontal=”-1px” box_shadow_vertical=”-1px” box_shadow_color=”rgba(71,74,182,0.12)” image_max_width=”64px” locked=”off” global_colors_info=”{}”]<\/p>\n The cost of equipment maintenance is reduced.<\/p>\n [\/et_pb_blurb][\/et_pb_column_inner][et_pb_column_inner type=”1_2″ saved_specialty_column_type=”2_3″ module_class=”et_pb_column_1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” parallax__hover=”off” parallax_method__hover=”on” module_class__hover=”et_pb_column_1_2″ custom_padding__hover=”|||”][et_pb_blurb title=”Deodorisation” url=”#” icon_placement=”left” image_icon_width=”64px” content_max_width=”1100px” _builder_version=”4.16″ header_font=”|on|||” header_text_color=”#2e2545″ header_line_height=”1.5em” body_text_color=”#8f8f8f” body_line_height=”1.9em” background_color=”#ffffff” custom_margin=”|||” custom_padding=”30px|30px|30px|30px” animation_style=”zoom” animation_direction=”bottom” animation_intensity_zoom=”20%” animation_starting_opacity=”100%” box_shadow_style=”preset7″ box_shadow_horizontal=”-1px” box_shadow_vertical=”-1px” box_shadow_color=”rgba(71,74,182,0.12)” image_max_width=”64px” locked=”off” global_colors_info=”{}”]<\/p>\n Efficiently prevents the spread of unpleasant odours in and around the biogas plant.<\/p>\n [\/et_pb_blurb][et_pb_blurb title=”Physical hazards and toxicity are avoided” url=”#” icon_placement=”left” image_icon_width=”64px” content_max_width=”1100px” _builder_version=”4.16″ header_font=”|on|||” header_text_color=”#2e2545″ header_line_height=”1.5em” body_text_color=”#8f8f8f” body_line_height=”1.9em” background_color=”#ffffff” custom_margin=”|||” custom_padding=”30px|30px|30px|30px” animation_style=”zoom” animation_direction=”bottom” animation_intensity_zoom=”20%” animation_starting_opacity=”100%” box_shadow_style=”preset7″ box_shadow_horizontal=”-1px” box_shadow_vertical=”-1px” box_shadow_color=”rgba(71,74,182,0.12)” image_max_width=”64px” locked=”off” global_colors_info=”{}”]<\/p>\n It is not harmful to people, equipment or the environment.<\/p>\n [\/et_pb_blurb][et_pb_blurb title=”Compost with higher added value” url=”#” icon_placement=”left” image_icon_width=”64px” content_max_width=”1100px” _builder_version=”4.16″ header_font=”|on|||” header_text_color=”#2e2545″ header_line_height=”1.5em” body_text_color=”#8f8f8f” body_line_height=”1.9em” background_color=”#ffffff” custom_margin=”|||” custom_padding=”30px|30px|30px|30px” animation_style=”zoom” animation_direction=”bottom” animation_intensity_zoom=”20%” animation_starting_opacity=”100%” box_shadow_style=”preset7″ box_shadow_horizontal=”-1px” box_shadow_vertical=”-1px” box_shadow_color=”rgba(71,74,182,0.12)” image_max_width=”64px” locked=”off” global_colors_info=”{}”]<\/p>\n The use of N-Bio<\/a> produces iron sulphide and pure sulphur, both of which improve the properties of the fertiliser.<\/p>\n [\/et_pb_blurb][et_pb_blurb title=”No explosive mixtures, no risk” url=”#” icon_placement=”left” image_icon_width=”64px” content_max_width=”1100px” _builder_version=”4.16″ header_font=”|on|||” header_text_color=”#2e2545″ header_line_height=”1.5em” body_text_color=”#8f8f8f” body_line_height=”1.9em” background_color=”#ffffff” custom_margin=”|||” custom_padding=”30px|30px|30px|30px” animation_style=”zoom” animation_direction=”bottom” animation_intensity_zoom=”20%” animation_starting_opacity=”100%” box_shadow_style=”preset7″ box_shadow_horizontal=”-1px” box_shadow_vertical=”-1px” box_shadow_color=”rgba(71,74,182,0.12)” image_max_width=”64px” locked=”off” global_colors_info=”{}”]<\/p>\n With N-Bio<\/a>, biogas desulphurisation does not require oxygen injection. This eliminates risks associated with explosive mixtures and improves the safety of the operation.<\/p>\n [\/et_pb_blurb][\/et_pb_column_inner][\/et_pb_row_inner][\/et_pb_column][\/et_pb_section][et_pb_section fb_built=”1″ admin_label=”Features” _builder_version=”4.16″ background_color=”rgba(10,10,10,0.54)” background_image=”https:\/\/nalonminerals.com\/wp-content\/uploads\/2020\/12\/QN-1.jpg” background_blend=”overlay” custom_padding=”100px|0px|100px|0px” global_colors_info=”{}”][et_pb_row column_structure=”1_3,2_3″ admin_label=”Become an Expert” _builder_version=”4.16″ animation_style=”zoom” animation_direction=”bottom” animation_intensity_zoom=”6%” global_colors_info=”{}”][et_pb_column type=”1_3″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text _builder_version=”4.16″ header_font=”||||||||” header_2_font=”|700|||||||” header_2_font_size=”36px” header_2_line_height=”1.3em” background_layout=”dark” custom_margin=”||20px|” animation_style=”slide” animation_direction=”bottom” animation_intensity_slide=”10%” locked=”off” global_colors_info=”{}” header_font_size__hover=”30px” header_font_size__hover_enabled=”30px” header_letter_spacing__hover=”0px” header_letter_spacing__hover_enabled=”0px” header_text_shadow_style__hover=”none” header_text_shadow_style__hover_enabled=”none” header_text_shadow_color__hover=”rgba(0,0,0,0.4)” header_text_shadow_color__hover_enabled=”rgba(0,0,0,0.4)”]<\/p>\n [\/et_pb_text][et_pb_divider color=”#7cda24″ divider_weight=”4px” disabled_on=”on|on|off” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” max_width=”40px” module_alignment=”left” custom_margin=”||10px|” animation_style=”zoom” animation_direction=”left” saved_tabs=”all” locked=”off” global_colors_info=”{}”][\/et_pb_divider][et_pb_text _builder_version=”4.16″ text_text_color=”#ffffff” text_font_size=”16px” text_line_height=”1.9em” animation_style=”zoom” animation_intensity_zoom=”6%” locked=”off” global_colors_info=”{}”]<\/p>\n In-situ<\/em> technology aims to remove or neutralise H\u2082S before<\/strong> it leaves the digester by acting directly within the digestion process. The most widespread strategy is the dosing of iron compounds into<\/strong> the anaerobic digester. <\/p>\n However, not all iron compounds act in the same way<\/strong>, and it is key to differentiate between ferric salts<\/strong> and iron hydroxides<\/strong>, as their behaviour, efficiency and technical requirements are different.<\/p>\n [\/et_pb_text][\/et_pb_column][et_pb_column type=”2_3″ _builder_version=”4.16″ custom_padding=”60px|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_accordion _builder_version=”4.16″ _module_preset=”default” custom_margin=”-51px|||||” locked=”off” global_colors_info=”{}”][et_pb_accordion_item title=”Iron hydroxides (as N-Bio)” open=”on” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n Compared to ferric salts, iron hydroxides<\/strong> such as those used in the N-Bio<\/strong> range present a safe, efficient and easy to handle alternative for in-situ biogasdesulphurisation<\/strong>. They are applied in solid form ( powder or pellet) directly to the digester or feed system, reacting progressively with the H\u2082S. <\/p>\n Advantages:<\/strong><\/p>\n They are non-corrosive and non-toxic<\/strong>, which simplifies storage and handling.<\/p>\n<\/li>\n They generate a buffering effect<\/strong> that stabilises H\u2082S levels for longer, even if dosing is momentarily interrupted.<\/p>\n<\/li>\n They do not adversely affect the pH of the digester.<\/p>\n<\/li>\n They can improve the fertiliser value of digestate by incorporating iron and sulphur in assimilable forms.<\/p>\n<\/li>\n<\/ul>\n Limitations:<\/strong><\/p>\n The reaction is more gradual<\/strong> compared to FeCl\u2083, so the decrease in H\u2082S is not immediate when first administered.<\/p>\n<\/li>\n<\/ul>\n [\/et_pb_accordion_item][et_pb_accordion_item title=”Ferric salts (such as ferric chloride – FeCl\u2083)” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” open=”off”]<\/p>\n One of the most commonly used products is ferric chloride (FeCl\u2083)<\/strong>. Its application is based on its high solubility and immediate reactivity with H\u2082S, which enables fast and effective biogas desulphurisation<\/strong> from the very beginning. <\/p>\n Advantages:<\/strong><\/p>\n Immediate reduction of dissolved H\u2082S in the digester.<\/p>\n<\/li>\n Competitively priced compared to other alternatives.<\/p>\n<\/li>\n<\/ul>\n Limitations:<\/strong><\/p>\n It is a highly corrosive<\/strong> compound that acidifies the medium<\/strong>, which can affect the balance of the digester and the health of the active biomass.<\/p>\n<\/li>\n It requires the installation of a specific liquid dosing system<\/strong>, due to its toxicity, with corrosion resistant materials (pumps, pipes, containers…).<\/p>\n<\/li>\n Does not provide a buffer effect: if dosing is stopped, H\u2082S levels may rise rapidly.<\/p>\n<\/li>\n It poses a high risk if not handled correctly, both to personnel and equipment.<\/p>\n<\/li>\n<\/ul>\n [\/et_pb_accordion_item][et_pb_accordion_item title=”Oxygen injection” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” open=”off”]<\/p>\n Another in-situ<\/strong> technique that some plants employ for biogas desulphurisation<\/strong> is controlled oxygen injection<\/strong> or microaeration<\/strong> within the digester. This strategy consists of introducing a very small amount of oxygen (usually in the form of air) into the anaerobic environment, with the aim of oxidising H\u2082S to elemental sulphur<\/strong> through the action of oxidising bacteria. <\/p>\n Advantages:<\/strong><\/p>\n Can partially reduce the concentration of H\u2082S without the need for chemical additives.<\/p>\n<\/li>\n It does not require the addition of external compounds to the digester, which facilitates its implementation in some installations.<\/p>\n<\/li>\n In certain cases, it can generate usable elemental sulphur.<\/p>\n<\/li>\n<\/ul>\n Disadvantages:<\/strong><\/p>\n High risk of overdosing<\/strong>: if too much oxygen is introduced, the anaerobic balance of the digester may be disturbed, negatively affecting methane production.<\/p>\n<\/li>\n Potential risk of formation of explosive mixtures<\/strong> if the amount of added oxygen is not strictly controlled.<\/p>\n<\/li>\n It does not always keep H\u2082S levels within the desired limits, especially at high sulphur loads.<\/p>\n<\/li>\n It requires a very precise injection system and often constant monitoring to avoid dangerous deviations.<\/p>\n<\/li>\n<\/ul>\n [\/et_pb_accordion_item][\/et_pb_accordion][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ admin_label=”FAQ” _builder_version=”4.16″ custom_padding=”100px|0px|100px|0px||” global_colors_info=”{}”][et_pb_row column_structure=”1_3,2_3″ _builder_version=”4.16″ global_colors_info=”{}”][et_pb_column type=”1_3″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text _builder_version=”4.16″ header_font=”||||||||” header_text_color=”#000000″ header_2_font=”|700|||||||” header_2_text_color=”#000000″ header_2_font_size=”36px” header_2_line_height=”1.3em” custom_margin=”||20px|” animation_style=”slide” animation_direction=”bottom” animation_intensity_slide=”10%” locked=”off” global_colors_info=”{}” header_font_size__hover=”30px” header_font_size__hover_enabled=”30px” header_letter_spacing__hover=”0px” header_letter_spacing__hover_enabled=”0px” header_text_shadow_style__hover=”none” header_text_shadow_style__hover_enabled=”none” header_text_shadow_color__hover=”rgba(0,0,0,0.4)” header_text_shadow_color__hover_enabled=”rgba(0,0,0,0.4)”]<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.16″ text_font=”||||||||” text_text_color=”#8f8f8f” text_font_size=”16px” text_line_height=”1.9em” header_font=”||||||||” header_4_font=”|700|||||||” header_4_font_size=”16px” header_4_line_height=”1.9em” animation_style=”zoom” animation_intensity_zoom=”6%” locked=”off” global_colors_info=”{}”]<\/p>\n Do you need technical advice on the process? Our team is at your disposal to recommend the right solution for you. Please do not hesitate to contact us with any questions you may have. <\/p>\n [\/et_pb_text][et_pb_button button_url=”https:\/\/nalonminerals.com\/#contact” button_text=”Contact” button_alignment=”left” _builder_version=”4.16″ custom_button=”on” button_text_size=”16px” button_text_color=”#ffffff” button_bg_color=”#2770ca” button_border_width=”10px” button_border_color=”#2770ca” button_border_radius=”100px” button_letter_spacing=”1px” button_font=”|on||on|” button_use_icon=”off” custom_margin=”20px|||” button_letter_spacing_hover=”2px” saved_tabs=”all” locked=”off” global_colors_info=”{}” button_text_size__hover_enabled=”off|desktop” button_text_size__hover=”null” button_one_text_size__hover_enabled=”off” button_one_text_size__hover=”null” button_two_text_size__hover_enabled=”off” button_two_text_size__hover=”null” button_text_color__hover_enabled=”off|desktop” button_text_color__hover=”null” button_one_text_color__hover_enabled=”off” button_one_text_color__hover=”null” button_two_text_color__hover_enabled=”off” button_two_text_color__hover=”null” button_border_width__hover_enabled=”off|hover” button_border_width__hover=”10px” button_one_border_width__hover_enabled=”off” button_one_border_width__hover=”null” button_two_border_width__hover_enabled=”off” button_two_border_width__hover=”null” button_border_color__hover_enabled=”on|hover” button_border_color__hover=”#1e48aa” button_one_border_color__hover_enabled=”off” button_one_border_color__hover=”null” button_two_border_color__hover_enabled=”off” button_two_border_color__hover=”null” button_border_radius__hover_enabled=”off|desktop” button_border_radius__hover=”null” button_one_border_radius__hover_enabled=”off” button_one_border_radius__hover=”null” button_two_border_radius__hover_enabled=”off” button_two_border_radius__hover=”null” button_letter_spacing__hover_enabled=”off|hover” button_letter_spacing__hover=”1px” button_one_letter_spacing__hover_enabled=”off” button_one_letter_spacing__hover=”null” button_two_letter_spacing__hover_enabled=”off” button_two_letter_spacing__hover=”null” button_bg_color__hover_enabled=”on|hover” button_bg_color__hover=”#1e48aa” button_one_bg_color__hover_enabled=”off” button_one_bg_color__hover=”null” button_two_bg_color__hover_enabled=”off” button_two_bg_color__hover=”null” transform_styles__hover_enabled=”off|desktop” transform_scale__hover_enabled=”off|desktop” transform_translate__hover_enabled=”off|desktop” transform_rotate__hover_enabled=”off|desktop” transform_skew__hover_enabled=”off|desktop” transform_origin__hover_enabled=”off|desktop” button_bg_enable_color__hover=”on”][\/et_pb_button][\/et_pb_column][et_pb_column type=”2_3″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_accordion _builder_version=”4.16″ _module_preset=”default” toggle_level=”h3″ toggle_font_size=”16px” global_colors_info=”{}”][et_pb_accordion_item title=”What is biogas desulphurisation?” open=”on” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n Biogas desulphurisation<\/strong> is the process of removing hydrogen sulphide (H\u2082S) from biogas produced in anaerobic digesters or landfills. In other words, it consists of scrubbing<\/em> the biogas to remove this sulphur-rich pollutant gas. This results in a much cleaner and safer biogas, suitable for use as an energy source without causing corrosion or toxic emissions. There are different methods to achieve this H\u2082S removal but they all share the goal of minimising the hydrogen sulphide content in the biogas. <\/p>\n [\/et_pb_accordion_item][et_pb_accordion_item title=”Why is it important to eliminate H\u2082S?” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” open=”off”]<\/p>\n Removing H\u2082S from biogas is important for technical, economic and environmental<\/strong> reasons. On the technical side, H\u2082S is corrosive: if not removed, it will attack metal parts, causing breakdowns and high maintenance costs. <\/span><\/span><\/span><\/a><\/span><\/span>. From a health and safety point of view, H\u2082S is a toxic gas – breathing biogas with high concentrations of H\u2082S can be very dangerous for operators. And environmentally, burning biogas with H\u2082S produces sulphur gases (SO\u2082) that cause pollution (acid rain). Therefore, by eliminating H\u2082S<\/strong> we protect the installation’s equipment, ensure the health of the personnel and avoid polluting the environment<\/strong>. <\/p>\n [\/et_pb_accordion_item][et_pb_accordion_item title=”What solutions are available for desulfurization?” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” open=”off”]<\/p>\n There are several biogas desulphurisation technologies<\/strong>, and they are often combined to achieve maximum efficiency. In general terms, the solutions can be grouped into: <\/p>\nAdvantages of the use of iron hydroxides in biogas desulphurisation<\/strong><\/h3>\n
On-site biogas desulphurisation methods<\/h2>\n
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Frequently asked questions<\/strong><\/h4>\n