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Bilingual Tech Mapping for Pulp Paper Guideline - Asosiasi Pulp ...

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Figure 5.6 Stages of Anaerobic Digestion Process<br />

Hydrolysis is the process of solving insoluble<br />

organics large and complex to small molecules that can be<br />

delivered to the microbial cells and can be metabolized<br />

(Thompson, 2008). Hydrolysis process can be done<br />

enzymatically convert complex organic suspended<br />

dissolved into simple organic that can be used by bacteria<br />

(Thompson, 2008).<br />

Acidification of the complex phase which involves<br />

the <strong>for</strong>mation of acid, hydrogen production, and stage<br />

acetogenic. Sugar, long chain fatty acids and amino acids<br />

<strong>for</strong>med from hydrolysis is used as a substrate. Organic<br />

acids with low molecular weight resulting from<br />

acidogenesis stage will be parsed into methane (CH4) and<br />

CO2 by bacteria methanogenic. Biogas as by product of<br />

decomposition of organic matter has been considered as<br />

an alternative energy source. The composition of biogas is<br />

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