Anaerobic processes

Pavlostathis, Spyros G.; Misra, Girish; Prytula, Mark; Yeh, Daniel H.

doi:10.2175/106143096x135335

Cited by 7 publications

(3 citation statements)

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“…Comprising mainly methane, biogas is a renewable energy source that can be directly used as a car fuel, for heating, or indirectly used to generate electricity [ 1 ]. Biogas production through anaerobic digestion involves four crucial steps including hydrolysis, acidogenesis, acetogenesis, and methanogenesis.…”

Section: Introductionmentioning

confidence: 99%

“…During hydrolysis, lipids are rapidly degraded into monomers such as glycerol and LCFAs which are further converted into short organic acids via β -oxidation [ 7 ]. The short organic acids are subsequently converted into acetate and hydrogen which are eventually converted into methane and carbon dioxide [ 1 ]. Biogas derived from lipid have higher methane content compared to that derived from carbohydrates and proteins [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

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Inhibitory Effect of Long-Chain Fatty Acids on Biogas Production and the Protective Effect of Membrane Bioreactor

Dasa

Westman

Millati

et al. 2016

BioMed Research International

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Anaerobic digestion of lipid-containing wastes for biogas production is often hampered by the inhibitory effect of long-chain fatty acids (LCFAs). In this study, the inhibitory effects of LCFAs (palmitic, stearic, and oleic acid) on biogas production as well as the protective effect of a membrane bioreactor (MBR) against LCFAs were examined in thermophilic batch digesters. The results showed that palmitic and oleic acid with concentrations of 3.0 and 4.5 g/L resulted in >50% inhibition on the biogas production, while stearic acid had an even stronger inhibitory effect. The encased cells in the MBR system were able to perform better in the presence of LCFAs. This system exhibited a significantly lower percentage of inhibition than the free cell system, not reaching over 50% at any LCFA concentration tested.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Inhibitory Effect of Long-Chain Fatty Acids on Biogas Production and the Protective Effect of Membrane Bioreactor

Dasa

Westman

Millati

et al. 2016

BioMed Research International

View full text Add to dashboard Cite

show abstract

“…Iron is seemed to be involved in the energy metabolism as a cytochrome and ferredoxin in the methylotrophic methanogens, and also responsible for the black color of the granules (Shen et al, 1993). However, high concentrations of heavy metals can inhibit acidogenic or/and methanogenic activities (Pavlostathis et al 1996;Lin and Chen, 1997).…”

Section: Granulation In Other Systemsmentioning

confidence: 99%