1997
DOI: 10.1016/s0043-1354(96)00413-7
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Influences of pH and moisture content on the methane production in high-solids sludge digestion

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Cited by 345 publications
(151 citation statements)
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“…For example, a pH value near neutral is preferred for methanogens (Tchobanoglous et al, 2002). Lay et al (1997) demonstrated that the process of methane production because of high-solids digestion at moisture contents of 90 to 96% functions over a pH range of 6.6 to 7.8, with an optimum of 6.8; a pH lower than 6.1 or higher than 8.3 could cause process failure. Nelson et al (2004) measured pH in the anaerobic lagoons to be between 6.8 and 6.9.…”
Section: Discussionmentioning
confidence: 99%
“…For example, a pH value near neutral is preferred for methanogens (Tchobanoglous et al, 2002). Lay et al (1997) demonstrated that the process of methane production because of high-solids digestion at moisture contents of 90 to 96% functions over a pH range of 6.6 to 7.8, with an optimum of 6.8; a pH lower than 6.1 or higher than 8.3 could cause process failure. Nelson et al (2004) measured pH in the anaerobic lagoons to be between 6.8 and 6.9.…”
Section: Discussionmentioning
confidence: 99%
“…Los microorganismos anaerobios necesitan de manera estricta un pH en torno a la neutralidad para su desarrollo correcto, aunque permiten cierta oscilación (Clark & Speece, 1989), aunque pueden presentarse problemas si baja por debajo de 6 o sube por encima de 8,3 (Lay, Li, & Noike, 1997). El pH afecta directamente la actividad enzimática de los microorganismos mediante cambios de estado de los iones de las enzimas como el carboxil y amino; alteración que se presenta en los componentes no ionizables del sistema, como por ejemplo la desnaturalización de la estructura proteica de las enzimas (Clark & Speece, 1989).…”
Section: Valor De La Acidez (Ph)unclassified
“…Cumulative volume of produced hydrogen was determined according to a modified Gompertz equation (Lay et al, 1997):…”
Section: Kinetics Of Hydrogen Productionmentioning
confidence: 99%