{"id":1123,"date":"2015-02-11T07:59:46","date_gmt":"2015-02-11T07:59:46","guid":{"rendered":"http:\/\/www.ernestohernandez.org\/?page_id=1123"},"modified":"2015-02-11T08:00:20","modified_gmt":"2015-02-11T08:00:20","slug":"two-stage-anaerobic-digestion-tsad","status":"publish","type":"page","link":"http:\/\/www.ernestohernandez.org\/?page_id=1123","title":{"rendered":"Two-stage anaerobic digestion (TSAD)"},"content":{"rendered":"<p style=\"margin: 0cm 0cm 8pt;\"><strong><span style=\"color: #333333; line-height: 107%; font-family: 'Helvetica','sans-serif'; font-size: 14pt;\">Two-stage anaerobic digestion (TSAD)<\/span><\/strong><\/p>\n<p style=\"text-align: justify;\">Phenol is a widespread pollutant in many industrial wastewaters. It diminishes biogas formation in anaerobic digesters. We found that a two-stage anaerobic digester (acidogenic and methanogenic) fermented nutrients without inhibition by accumulation of phenol. The acidogenic reactor also prevented inhibition of biogas formation in the second phase (methanogenic), by holding phenol and fast-produced organic acids. Batch TSAD is a potential wastewater treatment option to decontaminate streams containing nutrients contaminated with phenol. This system enhances biogas production and allows better control of the acidogenic and methanogenic phases.<\/p>\n<div id=\"attachment_406\" style=\"width: 756px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/i0.wp.com\/www.ernestohernandez.org\/wp-content\/uploads\/2013\/10\/Two-stage-anaerobic-digestion.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-406\" data-attachment-id=\"406\" data-permalink=\"http:\/\/www.ernestohernandez.org\/?attachment_id=406\" data-orig-file=\"https:\/\/i0.wp.com\/www.ernestohernandez.org\/wp-content\/uploads\/2013\/10\/Two-stage-anaerobic-digestion-e1582289815436.png?fit=600%2C459\" data-orig-size=\"600,459\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Two stage anaerobic digestion\" data-image-description=\"&lt;p&gt;Comparison between a two-stage and single-stage digesters when treating a synthetic wastewater contaminated with phenol&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;Two stage anaerobic digestion&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/i0.wp.com\/www.ernestohernandez.org\/wp-content\/uploads\/2013\/10\/Two-stage-anaerobic-digestion-e1582289815436.png?fit=300%2C230\" data-large-file=\"https:\/\/i0.wp.com\/www.ernestohernandez.org\/wp-content\/uploads\/2013\/10\/Two-stage-anaerobic-digestion-e1582289815436.png?fit=600%2C459\" class=\"wp-image-406 size-full\" src=\"https:\/\/i0.wp.com\/www.ernestohernandez.org\/wp-content\/uploads\/2013\/10\/Two-stage-anaerobic-digestion.png?resize=640%2C490\" alt=\"Two stage anaerobic digestion\" width=\"640\" height=\"490\" \/><\/a><p id=\"caption-attachment-406\" class=\"wp-caption-text\">Two stage anaerobic digestion<\/p><\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Two-stage anaerobic digestion (TSAD) Phenol is a widespread pollutant in many industrial wastewaters. It diminishes biogas formation in anaerobic digesters. We found that a two-stage anaerobic digester (acidogenic and methanogenic) fermented nutrients without inhibition by accumulation of phenol. The acidogenic reactor also prevented inhibition of biogas formation in the second phase (methanogenic), by holding phenol [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-1123","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P6rw5S-i7","jetpack-related-posts":[{"id":354,"url":"http:\/\/www.ernestohernandez.org\/?page_id=354","url_meta":{"origin":1123,"position":0},"title":"Conference papers","author":"Ernesto Hernandez","date":"August 15, 2013","format":false,"excerpt":"Hern\u00e1ndez, J.E., and Edyvean, R. \u201cAnaerobic treatment of phenol in a two-stage anaerobic reactor.\u201d Waste Management 2004, Rhodes, Greece, 203-211. Hernandez, J. E & Edyvean, R. G. (2005) Anaerobic treatment of phenol in a two-stage anaerobic reactor; 7th World Congress of Chemical Engineering, Glasgow. Hernandez, J. E., Bachmann, R. T.\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":359,"url":"http:\/\/www.ernestohernandez.org\/?page_id=359","url_meta":{"origin":1123,"position":1},"title":"Presentations and posters at conferences","author":"Ernesto Hernandez","date":"August 15, 2013","format":false,"excerpt":"Blanco, D., Hernandez, J.E., Mulas, D. and Gil, M.V. (2007). Genotypic characterization of phenol degrading microbes by applying Temperature Gradient Gel Electrophoresis (TGGE). XXXVI Congress of the Spanish Genetics Society, Leon, Spain. Hernandez, J. E & Edyvean, R. G. (2005) Inhibition of biogas production by substituted phenolic compounds in enriched\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1126,"url":"http:\/\/www.ernestohernandez.org\/?page_id=1126","url_meta":{"origin":1123,"position":2},"title":"Anaerobic microbial processes in artificial environments","author":"Ernesto Hernandez","date":"February 11, 2015","format":false,"excerpt":"This CONACYT sponsored research focused on studying the anaerobic biochemistry of complex microbial communities living in anaerobic digesting sludge and feeding on phenolic compounds. Phenols in the environment are sometimes unwanted due to their potential toxic and inhibitory effects. For instance, when released into wastewater, phenols could cause a reduction\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":475,"url":"http:\/\/www.ernestohernandez.org\/?page_id=475","url_meta":{"origin":1123,"position":3},"title":"Publications","author":"Ernesto Hernandez","date":"May 3, 2014","format":false,"excerpt":"Peer-reviewed papers Tanimu, I.M., Hernandez, J.E. and Bachmann, R.T. (2025). Biogas potential of oil palm empty fruit bunch and lignocellulosic insoluble fibre components via the syringe bioreactor method.\u00a0Fuel.385 (1), p. 134087. https:\/\/doi.org\/10.1016\/j.fuel.2024.134087 \u00a0 Hernandez, J.E., Espinosa-Solares, T., P\u00e9rez-Cadena, R., T\u00e9llez-Jurado, A. and Ram\u00edrez-Arpide, F.R. (2024). Sustainable agrobiorefinery system for advanced\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":335,"url":"http:\/\/www.ernestohernandez.org\/?page_id=335","url_meta":{"origin":1123,"position":4},"title":"Research","author":"Ernesto Hernandez","date":"August 15, 2013","format":false,"excerpt":"\"Nature is my\u00a0inspiration, it\u00a0motivates me to apply the tenets of chemical engineering to solve some of the current challenges faced by humankind \u2013I may call this, bioinspired chemical engineering\" \u00a0 Value-added chemicals from biomass Functional food from biomass bioprocessing Microbial enhanced oil recovery Bioenergy from cheese industry Molecular identification of\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1872,"url":"http:\/\/www.ernestohernandez.org\/?page_id=1872","url_meta":{"origin":1123,"position":5},"title":"Energ\u00eda y biomasa: \u00e1cido cafeico en residuos org\u00e1nicos y su efecto en el proceso de la digesti\u00f3n","author":"Ernesto Hernandez","date":"February 26, 2018","format":false,"excerpt":"Un contaminante muy com\u00fan en la biomasa El \u00e1cido cafeico es uno de los compuestos fen\u00f3licos que contiene el caf\u00e9, y al igual que muchos \u00e1cidos fen\u00f3licos tambi\u00e9n se encuentra en varios residuos org\u00e1nicos como el esti\u00e9rcol y una variedad de industrias como la producci\u00f3n de aceite de oliva, caf\u00e9,\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Coffee cup tea cup","src":"https:\/\/i0.wp.com\/www.ernestohernandez.org\/wp-content\/uploads\/2018\/02\/IMG_8195-e1519720359111.jpg?fit=1200%2C900&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.ernestohernandez.org\/wp-content\/uploads\/2018\/02\/IMG_8195-e1519720359111.jpg?fit=1200%2C900&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.ernestohernandez.org\/wp-content\/uploads\/2018\/02\/IMG_8195-e1519720359111.jpg?fit=1200%2C900&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.ernestohernandez.org\/wp-content\/uploads\/2018\/02\/IMG_8195-e1519720359111.jpg?fit=1200%2C900&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.ernestohernandez.org\/wp-content\/uploads\/2018\/02\/IMG_8195-e1519720359111.jpg?fit=1200%2C900&resize=1050%2C600 3x"},"classes":[]}],"_links":{"self":[{"href":"http:\/\/www.ernestohernandez.org\/index.php?rest_route=\/wp\/v2\/pages\/1123","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.ernestohernandez.org\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/www.ernestohernandez.org\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/www.ernestohernandez.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.ernestohernandez.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1123"}],"version-history":[{"count":1,"href":"http:\/\/www.ernestohernandez.org\/index.php?rest_route=\/wp\/v2\/pages\/1123\/revisions"}],"predecessor-version":[{"id":1124,"href":"http:\/\/www.ernestohernandez.org\/index.php?rest_route=\/wp\/v2\/pages\/1123\/revisions\/1124"}],"wp:attachment":[{"href":"http:\/\/www.ernestohernandez.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}