Effects of microbial community, lipids and pretreatment on the performance of the two-phase anaerobic digestion

Liu, Xueyan

doi:10.32657/10356/15154

Cited by 1 publication

(1 citation statement)

References 140 publications

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“…The efficiency of methane production was reduced by the fermentation system's lactic acid production. Lactic acid could break down the sludge granules' structure and further reduce the amount of specific methanogenic activity (Liu, 2001). An unwanted intermediate product of the methanogenesis process is propionic acid (Fang and Yu, 2002).…”

Section: Performance Of Uasr At Different Hrtsmentioning

confidence: 99%

Anaerobic digestion for treatment of polyester wastewater with different organic loading rates (OLRs)

Mahmoud,

Elsayed,

Soltan

et al. 2024

Aswan University Journal of Environmental Studies

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In this work, the performance of up-flow anaerobic staged reactor (UASR) was investigated for biogas production from polyester wastewater which are contaminated with heavy metals and 1,4-dioxane. three different values of average organic loading rates (OLRs) were applied 0.31±0.037, 0.71±.082, and 1.069±0.27 g COD /1.d, respectively at constant hydraulic retention time (HRT) of 96 h, in order to study their effects on biogas production, removal efficiency of 1,4-dioxane and COD. The results indicated that the biogas production obtained at three applied OLR were 14.7 ± 0.17 l/ d. at OLR 1.069±0.27 g COD /1.d., 7.5 ± 0.2 l/ d. at OLR 0.71±.082 g COD /1.d., and of 5.5 ± 0.11 l/d at low OLR, 0.31±0.037 g COD /1.d , respectively. Biogas is produced by the metabolism of acetic acid, lactic acid, and a small amount of propionic acid. Moreover, CODt and CODs removals efficiency were 79% and 80% at OLR 0.71±.082 g COD/l.d. The highest removal efficiencies were recorded at OLR 0.71 g COD/l.d. Effect of C/N ratio and heavy metals on biogas production were highlighted. Additionally, different HRTs were studied, to carefully describe the performance of UASR.

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Section: Performance Of Uasr At Different Hrtsmentioning

confidence: 99%