{"id":355,"date":"2023-06-21T12:00:15","date_gmt":"2023-06-21T12:00:15","guid":{"rendered":"https:\/\/fermeco.pl\/?page_id=355"},"modified":"2024-03-14T08:58:14","modified_gmt":"2024-03-14T08:58:14","slug":"ist-bei-der-methanfermentation-eine-alkalisierung-erforderlich","status":"publish","type":"page","link":"https:\/\/fermeco.pl\/de\/technologische-aspekte\/ist-bei-der-methanfermentation-eine-alkalisierung-erforderlich\/","title":{"rendered":"Ist bei der Methanfermentation eine Alkalisierung erforderlich?"},"content":{"rendered":"<style>.kb-row-layout-wrap.wp-block-kadence-rowlayout.kb-row-layout-id355_7e619b-3b{margin-top:0px;}.kb-row-layout-id355_7e619b-3b > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id355_7e619b-3b > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id355_7e619b-3b > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);max-width:var( --global-content-width, 1290px );padding-left:var(--global-content-edge-padding);padding-right:var(--global-content-edge-padding);padding-top:var(--global-kb-spacing-xl, 4rem);padding-bottom:var(--global-kb-spacing-xl, 4rem);grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id355_7e619b-3b{background-image:url('https:\/\/fermeco.pl\/wp-content\/uploads\/2024\/02\/banner_bg_podstrona-1.jpg');background-size:cover;background-position:center center;background-attachment:scroll;background-repeat:no-repeat;}.kb-row-layout-id355_7e619b-3b > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id355_7e619b-3b > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id355_7e619b-3b > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id355_7e619b-3b alignnone kt-row-has-bg wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal 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.kadence-column355_35ba81-a8 h2, .kadence-column355_35ba81-a8 h3, .kadence-column355_35ba81-a8 h4, .kadence-column355_35ba81-a8 h5, .kadence-column355_35ba81-a8 h6{color:var(--global-palette9, #ffffff);}.kadence-column355_35ba81-a8 a{color:var(--global-palette9, #ffffff);}.kadence-column355_35ba81-a8 a:hover{color:#80c504;}.kadence-column355_35ba81-a8{position:relative;}@media all and (max-width: 1024px){.kadence-column355_35ba81-a8 > .kt-inside-inner-col{flex-direction:column;justify-content:center;align-items:center;}}@media all and (max-width: 767px){.kadence-column355_35ba81-a8 > .kt-inside-inner-col{flex-direction:column;justify-content:center;align-items:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column355_35ba81-a8\"><div class=\"kt-inside-inner-col\">\n<h1 class=\"wp-block-heading has-text-align-center has-theme-palette-9-color has-text-color has-link-color has-larger-font-size wp-elements-8970c196dd751ac9cd875030aff8368a\" style=\"font-style:normal;font-weight:400;text-transform:uppercase\">Ist bei der Methanfermentation eine Alkalisierung erforderlich?<\/h1>\n\n\n<div class=\"breadcrumbs align  wp-block-bcn-breadcrumb-trail has-text-color has-background\" vocab=\"https:\/\/schema.org\/\" typeof=\"BreadcrumbList\">\n\t<span><\/span>\n\t<span property=\"itemListElement\" typeof=\"ListItem\"><a property=\"item\" typeof=\"WebPage\" title=\"Gehe zu Fermeco.\" href=\"https:\/\/fermeco.pl\/de\/\" class=\"home\" ><span property=\"name\">Fermeco<\/span><\/a><meta property=\"position\" content=\"1\"><\/span> &gt; <span property=\"itemListElement\" typeof=\"ListItem\"><a property=\"item\" typeof=\"WebPage\" title=\"Gehe zu Neuigkeiten.\" href=\"https:\/\/fermeco.pl\/de\/aktuell\/\" class=\"post-root post post-post\" aria-current=\"page\"><span property=\"name\">Neuigkeiten<\/span><\/a><meta property=\"position\" content=\"2\"><\/span><\/div>\n<\/div><\/div>\n\n<\/div><\/div>\n\n<style>.kb-row-layout-id355_999f32-d7 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id355_999f32-d7 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id355_999f32-d7 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);max-width:var( --global-content-width, 1290px );padding-left:var(--global-content-edge-padding);padding-right:var(--global-content-edge-padding);padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);grid-template-columns:minmax(0, calc(25% - ((var(--global-kb-gap-md, 2rem) * 1 )\/2)))minmax(0, calc(75% - ((var(--global-kb-gap-md, 2rem) * 1 )\/2)));}.kb-row-layout-id355_999f32-d7 > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id355_999f32-d7 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 767px){.kb-row-layout-id355_999f32-d7 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id355_999f32-d7 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(1 of *:not(style)){order:2;}.kb-row-layout-id355_999f32-d7 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(2 of *:not(style)){order:1;}.kb-row-layout-id355_999f32-d7 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(3 of *:not(style)){order:12;}.kb-row-layout-id355_999f32-d7 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(4 of *:not(style)){order:11;}.kb-row-layout-id355_999f32-d7 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(5 of *:not(style)){order:22;}.kb-row-layout-id355_999f32-d7 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(6 of *:not(style)){order:21;}.kb-row-layout-id355_999f32-d7 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(7 of *:not(style)){order:32;}.kb-row-layout-id355_999f32-d7 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(8 of *:not(style)){order:31;}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id355_999f32-d7 alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-row-layout-right-golden kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top kb-theme-content-width\">\n<style>.kadence-column355_6f613f-be > .kt-inside-inner-col,.kadence-column355_6f613f-be > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column355_6f613f-be > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column355_6f613f-be > .kt-inside-inner-col{flex-direction:column;}.kadence-column355_6f613f-be > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column355_6f613f-be > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column355_6f613f-be{position:relative;}@media all and (max-width: 1024px){.kadence-column355_6f613f-be > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column355_6f613f-be > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column355_6f613f-be\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><style>.wp-block-kadence-advancedheading.kt-adv-heading355_50b7dd-c1, .wp-block-kadence-advancedheading.kt-adv-heading355_50b7dd-c1[data-kb-block=\"kb-adv-heading355_50b7dd-c1\"]{padding-top:var(--global-kb-spacing-xxs, 0.5rem);padding-bottom:var(--global-kb-spacing-xxs, 0.5rem);text-align:center;font-size:var(--global-kb-font-size-md, 1.25rem);font-style:normal;text-transform:uppercase;text-shadow:1px 1px 1px rgba(0, 0, 0, 0.2);}.wp-block-kadence-advancedheading.kt-adv-heading355_50b7dd-c1[data-kb-block=\"kb-adv-heading355_50b7dd-c1\"]{display:flex;gap:0.25em;justify-content:center;align-items:center;}.wp-block-kadence-advancedheading.kt-adv-heading355_50b7dd-c1[data-kb-block=\"kb-adv-heading355_50b7dd-c1\"] .kb-adv-heading-icon svg{width:1em;height:1em;}.wp-block-kadence-advancedheading.kt-adv-heading355_50b7dd-c1 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading355_50b7dd-c1[data-kb-block=\"kb-adv-heading355_50b7dd-c1\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading355_50b7dd-c1 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading355_50b7dd-c1[data-kb-block=\"kb-adv-heading355_50b7dd-c1\"] img.kb-inline-image{width:150px;vertical-align:baseline;}@media all and (max-width: 1024px){.wp-block-kadence-advancedheading.kt-adv-heading355_50b7dd-c1, .wp-block-kadence-advancedheading.kt-adv-heading355_50b7dd-c1[data-kb-block=\"kb-adv-heading355_50b7dd-c1\"]{text-shadow:1px 1px 1px rgba(0, 0, 0, 0.2);}}@media all and (max-width: 767px){.wp-block-kadence-advancedheading.kt-adv-heading355_50b7dd-c1, .wp-block-kadence-advancedheading.kt-adv-heading355_50b7dd-c1[data-kb-block=\"kb-adv-heading355_50b7dd-c1\"]{text-shadow:1px 1px 1px rgba(0, 0, 0, 0.2);}}<\/style><h2 class=\"kt-adv-heading355_50b7dd-c1 wp-block-kadence-advancedheading kt-adv-heading-has-icon has-theme-palette9-color has-text-color has-kb-palette-2-background-color has-background\" data-kb-block=\"kb-adv-heading355_50b7dd-c1\"><span class=\"kb-svg-icon-wrap kb-adv-heading-icon kb-svg-icon-fas_project-diagram kb-adv-heading-icon-side-left\"><svg viewBox=\"0 0 640 512\"  fill=\"currentColor\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><path d=\"M384 320H256c-17.67 0-32 14.33-32 32v128c0 17.67 14.33 32 32 32h128c17.67 0 32-14.33 32-32V352c0-17.67-14.33-32-32-32zM192 32c0-17.67-14.33-32-32-32H32C14.33 0 0 14.33 0 32v128c0 17.67 14.33 32 32 32h95.72l73.16 128.04C211.98 300.98 232.4 288 256 288h.28L192 175.51V128h224V64H192V32zM608 0H480c-17.67 0-32 14.33-32 32v128c0 17.67 14.33 32 32 32h128c17.67 0 32-14.33 32-32V32c0-17.67-14.33-32-32-32z\"\/><\/svg><\/span><span class=\"kb-adv-text-inner\">ASPEKTE<\/span><\/h2>\n\n<nav class=\"items-justified-left is-vertical wp-block-navigation is-content-justification-left is-layout-flex wp-container-core-navigation-is-layout-aacc3761 wp-block-navigation-is-layout-flex\" aria-label=\"Aspekte\"><ul class=\"wp-block-navigation__container items-justified-left is-vertical wp-block-navigation\"><li class=\" wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/fermeco.pl\/de\/technologische-aspekte\/auswahl-des-fermentationskammer-typs-hinsichtlich-der-eigenschaften-des-behandelten-abwassers\/\"><span class=\"wp-block-navigation-item__label\">Auswahl des Fermentationskammer-Typs hinsichtlich der Eigenschaften des behandelten Abwassers<\/span><\/a><\/li><li class=\" wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/fermeco.pl\/de\/technologische-aspekte\/einfluss-der-hydrolyse-auf-die-effizienz-des-methanfermentationsprozesses\/\"><span class=\"wp-block-navigation-item__label\">Einfluss der Hydrolyse auf die Effizienz des Methanfermentationsprozesses<\/span><\/a><\/li><li class=\" wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/fermeco.pl\/de\/technologische-aspekte\/welches-anaerobe-sediment-sollte-fuer-die-methanfermentation-verwendet-werden\/\"><span class=\"wp-block-navigation-item__label\">Welches anaerobe Sediment sollte f\u00fcr die Methanfermentation verwendet werden?<\/span><\/a><\/li><li class=\" wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/fermeco.pl\/de\/technologische-aspekte\/ist-bei-der-methanfermentation-eine-alkalisierung-erforderlich\/\"><span class=\"wp-block-navigation-item__label\">Ist bei der Methanfermentation eine Alkalisierung erforderlich?<\/span><\/a><\/li><li class=\" wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/fermeco.pl\/de\/technologische-aspekte\/alternative-technologische-losungen-fur-die-behandlung-von-abwassern-aus-der-fischverarbeitung\/\"><span class=\"wp-block-navigation-item__label\">Alternative technologische L\u00f6sungen f\u00fcr die Behandlung von Abw\u00e4ssern aus der Fischverarbeitung<\/span><\/a><\/li><\/ul><\/nav>\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading355_a9da2c-6d, .wp-block-kadence-advancedheading.kt-adv-heading355_a9da2c-6d[data-kb-block=\"kb-adv-heading355_a9da2c-6d\"]{padding-top:var(--global-kb-spacing-xxs, 0.5rem);padding-bottom:var(--global-kb-spacing-xxs, 0.5rem);text-align:center;font-size:var(--global-kb-font-size-md, 1.25rem);font-style:normal;text-transform:uppercase;text-shadow:1px 1px 1px rgba(0, 0, 0, 0.2);}.wp-block-kadence-advancedheading.kt-adv-heading355_a9da2c-6d[data-kb-block=\"kb-adv-heading355_a9da2c-6d\"]{display:flex;gap:0.25em;justify-content:center;align-items:center;}.wp-block-kadence-advancedheading.kt-adv-heading355_a9da2c-6d[data-kb-block=\"kb-adv-heading355_a9da2c-6d\"] .kb-adv-heading-icon svg{width:1em;height:1em;}.wp-block-kadence-advancedheading.kt-adv-heading355_a9da2c-6d mark.kt-highlight, 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32-14.33 32-32V32c0-17.67-14.33-32-32-32z\"\/><\/svg><\/span><span class=\"kb-adv-text-inner\">Produkte<\/span><\/h2>\n\n<nav class=\"items-justified-left is-vertical wp-block-navigation is-content-justification-left is-layout-flex wp-container-core-navigation-is-layout-adc7e0b5 wp-block-navigation-is-layout-flex\" aria-label=\"Produkte\"><ul class=\"wp-block-navigation__container items-justified-left is-vertical wp-block-navigation\"><li class=\" wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/fermeco.pl\/de\/produkte\/mechanische-und-physikalische-verfahren\/\"><span class=\"wp-block-navigation-item__label\">Industrielle Kl\u00e4ranlagen<\/span><\/a><\/li><li class=\" wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/fermeco.pl\/de\/produkte\/biogasanlagen\/\"><span class=\"wp-block-navigation-item__label\">Biogasanlagen<\/span><\/a><\/li><li class=\" wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/fermeco.pl\/de\/produkte\/anlagen-zur-reinigung-des-floatwasserkreislaufs-radiale-absetzbecken\/\"><span class=\"wp-block-navigation-item__label\">Anlagen zur Reinigung des Floatwasserkreislaufs \u2013 radiale Absetzbecken<\/span><\/a><\/li><li class=\" wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/fermeco.pl\/de\/produkte\/anlagen-zur-entwasserung-von-schwemmerde\/\"><span class=\"wp-block-navigation-item__label\">Anlagen zur Entw\u00e4sserung von Schwemmerde<\/span><\/a><\/li><\/ul><\/nav><\/div><\/div>\n<\/div><\/div>\n\n\n<style>.kadence-column355_81a25a-c1 > .kt-inside-inner-col,.kadence-column355_81a25a-c1 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column355_81a25a-c1 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column355_81a25a-c1 > .kt-inside-inner-col{flex-direction:column;}.kadence-column355_81a25a-c1 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column355_81a25a-c1 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column355_81a25a-c1{position:relative;}@media all and (max-width: 1024px){.kadence-column355_81a25a-c1 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column355_81a25a-c1 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column355_81a25a-c1\"><div class=\"kt-inside-inner-col\">\n<p>Die Untersuchungen zum&nbsp;Methanfermentationsprozess&nbsp;in technischen Anlagen erw\u00e4hnen die Notwendigkeit, eine Natriumhydroxidl\u00f6sung einzusetzen, um den pH-Wert im Fermenter auf einem optimalen Niveau zu stabilisieren. Dies gilt insbesondere f\u00fcr die Behandlung von Industrieabw\u00e4ssern.<\/p>\n\n\n\n<p>Die Annahme einer kontinuierlichen Alkalisierung des Fermentationsgemisches in den betrieblichen Annahmen ist dagegen schlichtweg ein Missverst\u00e4ndnis. Dies liegt daran, dass durch eine k\u00fcnstliche Regulierung der Reaktion im Fermenter niemals sehr hohe Reinigungseffekte erzielt werden, da ein Teil der entstehenden organischen S\u00e4uren in Natriumsalzen gebunden wird, die wiederum im fermentierten Abwasser als CSB\/BSBT5 bezeichnet werden.<\/p>\n\n\n\n<p>Was verursacht das Problem des instabilen pH-Werts im Fermenter? Die Hauptursache ist die schlechte biologische Qualit\u00e4t des anaeroben Schlamms, der in der Anlaufphase f\u00fcr die Behandlung bestimmter Industrieabw\u00e4sser ungeeignet war. Auch Abw\u00e4sser z. B. aus der Fruchtsaftproduktion mit einem pH-Wert von ca. 5 k\u00f6nnen ohne zus\u00e4tzliche Alkalisierung fermentiert werden, was ebenfalls erhebliche Betriebskosten verursacht. Die richtige biologische Qualit\u00e4t des anaeroben Schlamms betrifft insbesondere die Frage der quantitativen Beziehungen der anaeroben Bakteriengruppen, die die einzelnen Phasen der Methanfermentation durchf\u00fchren, was einen direkten Einfluss auf die Effizienz der Abwasserbehandlung und die Erzielung einer hohen Methankonzentration im Biogas von bis zu 80% hat. Ein wesentlicher Vorteil eines solchen Schlamms ist die sehr hohe Best\u00e4ndigkeit gegen periodische \u00dcberlastungen mit organischen Schadstoffen.<\/p>\n<\/div><\/div>\n\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Ist bei der Methanfermentation eine Alkalisierung erforderlich? ASPEKTE Produkte Die Untersuchungen zum&nbsp;Methanfermentationsprozess&nbsp;in technischen Anlagen erw\u00e4hnen die Notwendigkeit, eine Natriumhydroxidl\u00f6sung einzusetzen, um den pH-Wert im Fermenter auf einem optimalen Niveau zu stabilisieren. Dies gilt insbesondere f\u00fcr die Behandlung von Industrieabw\u00e4ssern. Die Annahme einer kontinuierlichen Alkalisierung des Fermentationsgemisches in den betrieblichen Annahmen ist dagegen schlichtweg ein Missverst\u00e4ndnis&#8230;.<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":447,"menu_order":12,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"hide","_kad_post_layout":"fullwidth","_kad_post_sidebar_id":"","_kad_post_content_style":"unboxed","_kad_post_vertical_padding":"hide","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"class_list":["post-355","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ist bei der Methanfermentation eine Alkalisierung erforderlich? - Fermeco<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fermeco.pl\/de\/technologische-aspekte\/ist-bei-der-methanfermentation-eine-alkalisierung-erforderlich\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ist bei der Methanfermentation eine Alkalisierung erforderlich? - Fermeco\" \/>\n<meta property=\"og:description\" content=\"Ist bei der Methanfermentation eine Alkalisierung erforderlich? 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