Effects of feedstock ratio and organic loading rate on the anaerobic mesophilic co-digestion of rice straw and pig manure

Liu, Dong; Liu, Shengchu; Li, Mi; Liu, Zhidong; Yuan, Y.; Yan, Zhiying; Liu, Xiaofeng

doi:10.1016/j.biortech.2015.03.040

Cited by 99 publications

(54 citation statements)

References 31 publications

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“…The BP (193.36 mL/g VS, ∼22.59% conversion) of RS in this study was lower than that of 355.21 mL/g VS (47.5% conversion) presented by Li et al Li et al reported that the RS was chopped and ground completely and the inoculum was fresh pig manure collected from a pig farm. Each digester was manually mixed twice a day.…”

Section: Resultscontrasting

confidence: 73%

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Biogas production from most agricultural organic wastes by anaerobic digestion in Taiwan

Lin

Pai

et al. 2019

Env Prog and Sustain Energy

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Agricultural organic wastes (AOW) have the potential to provide bioenergy particularly found in biogas by anaerobic digestion (AD). In this study, the biogas production (BP) of AOW was obtained by batch AD with anaerobic digesters (500 mL) at 35°C incubator. The results showed that BP values in terms of volatile solids (VS) from rice husk, rice straw, flower residues, fruit and vegetable residues, wasted oyster shell residue (WOSR), fishery residues, livestock and poultry manures, livestock and poultry slaughter wastes (LPSW), and eight equally mixed wastes (EEMW) were 84.03, 193.36, 153.32, 76.27, 150.48, 63.26, 169.63, 615.74, and 172.83 mL/g VS, respectively. LPSW showed the highest μm of 16.99 mL/g VS‐d, the highest BP of 615.74 mL/g VS and the highest bioconversion efficiency of 65.98% compared to the other organic wastes. BP from the most AOW in Taiwan by AD was estimated to be 768,567,753 (743,522,223, excluding WOSR) m3/year. The annual BP of 768,567,753 m3/year of the eight total major AOW by AD was lower (∼20.11%) than 961,989,781 m3/year of the EEMW by anaerobic co‐digestion. Result also showed that modified Gompertz equation was suitable to describe BP accumulation and BP rate.

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Section: Resultscontrasting

confidence: 73%

“…The review of paddy residues such as RH and RS were presented by Shafie, RS can be pretreated with acids and co‐digested with pig manure by AD . RS also can be treated by combustion or gasification . Supercritical methanolysis of pretreated RS with the white‐rot fungus Trichoderma sp.…”

Section: Introductionmentioning

confidence: 99%

Biogas production from most agricultural organic wastes by anaerobic digestion in Taiwan

Lin

Pai

et al. 2019

Env Prog and Sustain Energy

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“…Ammonia is an important nitrogen source for the growth of methanogens as well as a key pH‐stabilizing agent for the neutralization of VFAs. However, high concentration of ammonia inhibit the activity of methanogens (Li, Liu, et al., ). Ammonia concentration in R1 increased from 2,482–4,384 mg/L, but decreased in R2 and R3 when the OLR increased from 2 to 4 g L −1 day −1 .…”

Section: Resultsmentioning

confidence: 99%

Methanogenic community during the anaerobic digestion of different substrates and organic loading rates

Kong

Zhang

et al. 2018

MicrobiologyOpen

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Three anaerobic reactors using pig manure (PM), maize straw (MS), and a mixture of the two as substrates were compared for archaeal community structure and diversity, and for methanogens response to increased organic loading rate (OLR, expressed in the mass of volatile solid (VS)). Methanogenic archaeal richness during codigestion of pig manure with maize straw (ACE: 2412) was greater than that during the others (ACE: 1225, 1467) at an OLR of 4 g L day , accompanied by high specific methane yield. Euryarchaeota and Crenarchaeota predominated during overall digestion of different substrates; with relative abundances of 63.5%-99.0% and 1.0%-36.3%, respectively. Methanosarcina was the predominant genus that accounted for 33.7%-79.8% of the archaeal community. The diversity in the PM digester decreased with increase in OLR, but increased in the MS digester. The diversity was stable during the codigestion with increased OLR. The relative abundances of hydrogenotrophic methanogens increased by 2.6 and 2.1 folds; the methanogenic community shifted from acetoclastic to hydrogenotrophic methanogens during digestion of MS, and of the mixture of MS and PM. Canonical correspondence analysis revealed a strong relationship between reactor parameters and methanogenic community.

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“…The substrates for AD are widespread, including municipal, agricultural, horticultural and industrial wastes 4, 5 . Food waste (FW) is an attractive feedstock for AD because of its high methane production potential 6 .…”

Section: Introductionmentioning

confidence: 99%

Three-stage anaerobic co-digestion of food waste and horse manure

Zhang

Loh

Lee

et al. 2017

Sci Rep

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A novel compact three-stage anaerobic digester (HM3) was developed to combine the advantages of high solids anaerobic digestion (AD) and wet AD for co-digestion of food waste and horse manure. By having three separate chambers in the three-stage anaerobic digester, three different functional zones were created for high-solids hydrolysis, acidogenesis and wet methanogenesis. The results showed that the functionalized partitioning in HM3 significantly accelerated the solubilization of solid organic matters and the formation of volatile fatty acids, resulting in an increase of 11~23% in methane yield. VS reduction in the HM3 presents the highest rate of 71% compared to the controls. Pyrosequencing analysis indicated that different microbial communities in terms of hydrolyzing bacteria, acidogenic bacteria and methanogenic archaea were selectively enriched in the three separate chambers of the HM3. Moreover, the abundance of the methanogenic archaea was increased by 0.8~1.28 times compared to controls.

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Effects of feedstock ratio and organic loading rate on the anaerobic mesophilic co-digestion of rice straw and pig manure

Cited by 99 publications

References 31 publications

Biogas production from most agricultural organic wastes by anaerobic digestion in Taiwan

Biogas production from most agricultural organic wastes by anaerobic digestion in Taiwan

Methanogenic community during the anaerobic digestion of different substrates and organic loading rates

Three-stage anaerobic co-digestion of food waste and horse manure

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