Improved biogas production from rice straw by co-digestion with kitchen waste and pig manure

Ye, Jingqing; Dong, Li; Sun, Yueming; Wang, Guohui; Yuan, Zhenhong; Zhang, Feng; Wang, Yao

doi:10.1016/j.wasman.2013.05.014

Cited by 262 publications

(116 citation statements)

References 25 publications

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“…Straw contributed remarkably to biogas production during the co-fermentation process in this study, which demonstrated the enhancement effect of co-fermentation on the performance in anaerobic digesters (Ye et al 2013). Straw-associated microbiota may be mainly responsible for the straw degradation and provide substrates for other microbes.…”

Section: Discussionmentioning

confidence: 52%

“…The process enriches microbial consortia that are mainly composed of prokaryotic communities to convert mixtures of organic matter including agricultural, animal, or food waste into biogas with methane content of 50-70 % (Luo and Angelidaki 2013;Town et al 2014). Owing to the improvement of nutrient balance and buffer capacity, a variety of studies have demonstrated the enhancement effect of co-fermentation on the process performance (Ye et al 2013;Ferrer et al 2014). However, a lack of detailed understanding of the involved microbial communities has hindered the progress of current technique (Town et al 2014).…”

Section: Introductionmentioning

confidence: 99%

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Straw- and slurry-associated prokaryotic communities differ during co-fermentation of straw and swine manure

Rui

Pei

et al. 2014

Appl Microbiol Biotechnol

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Anaerobic co-fermentation of straw and manure is widely used for waste treatment and biogas production. However, the differences between the straw-and slurry-associated prokaryotic communities, their dynamic changes throughout the co-fermentation process, and their correlations with bioreactor performance are not fully understood. To address these questions, we investigated the prokaryotic community compositions and the dynamics of prokaryotes attached to the straw and in the slurry during co-fermentation of wheat straw and swine manure using pyrosequencing technique. The results showed that straw-and slurry-associated prokaryotes were different in their structure and function. Strawassociated prokaryotic communities were overrepresented by the phyla Spirochaetes and Fibrobacteres, while Synergistetes and Euryarchaeota were more abundant in the slurry. The straw-associated candidate class TG3, genera Fibrobacter, Bacteroides, Acetivibrio, Clostridium III, Papillibacter, Treponema, Sedimentibacter, and Lutispora may specialize in substrate hydrolysis. Propionate was the most abundant volatile fatty acid in the slurry, and it was probably degraded through syntrophic oxidation by the genera Pelotomaculum, Methanoculleus, and Methanosaeta. The protein-fermenting bacteria Aminobacterium and Cloacibacillus were much abundant in the slurry, indicating that proteins are important substrates in the co-fermentation. This study provided a better understanding of the anaerobic co-fermentation process that is driven by spatially differentiated microbiota.

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Section: Discussionmentioning

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Straw- and slurry-associated prokaryotic communities differ during co-fermentation of straw and swine manure

Rui

Pei

et al. 2014

Appl Microbiol Biotechnol

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“…For that reason, many authors have investigated about these parameters (Garcia-Pena et al 2011;Wu et al 2010). Furthermore, the most functional parameters for evaluating the efficiency of biogas production are the reduction in VS or COD (Debik and Coskun 2009;Demir et al 2011;Demirer and Chen 2005;Razaviarani et al 2013;Yangin-Gomec and Ozturk 2013;Ye et al 2013). Figure 1 shows important parameters of operating or performance compared to biogas-methane production from different substrates.…”

Section: Important Parameters For Operating and Performancementioning

confidence: 99%

Effects of co-substrate on biogas production from cattle manure: a review

Tufaner

Avşar

2016

Int. J. Environ. Sci. Technol.

109

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This literature review surveys the previous and current researches on the co-digestion of anaerobic processes and examines the synergies effect of co-digestion with cattle manure. Furthermore, this review also pays attention to different operational conditions like operating temperature, organic loading rate (OLR), hydraulic retention time (HRT), chemical oxygen demand (COD) and volatile solid (VS) removal efficiency and biogas or methane production. This review shows that anaerobic mono-digestion of cattle manure usually causing poor performance and stability. Anaerobic studies were generally performed under mesophilic conditions maintained between 35 and 37°C. Organic waste loading rate generally ranges from 1 to 6 g VS-COD L -1 day -1 stable condition in anaerobic digester. Generally, studies show that HRT for co-digestion of fruit-vegetables waste and industrial organic waste appears to exceed 20 days. However, the anaerobic co-digestion process is generally operated at HRT of between 10 and 20 days. VS and COD removal efficiency usually reaches up to 90 % due to codigestion with different type organic waste. Methane-biogas production is generally obtained between 0.1 and 0.65 L CH 4 -biogas g -1 VS.

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“…The optimization of the C/N ratio has also been studied. Ye et al (2013) observed that the C/N ratio was 21.7 when the ratio of kitchen waste, PM with rice straw was 0.4:1.6:1, which resulted in the highest biogas yield of 674.4 L/kg VS. Wang et al (2012b) investigated that the performance of pH and ammonia was more stable when C/N ratios were 25:1 and 30:1 than the other circumstances. Wang et al (2015) also found that natural clinoptilolite could be used to control the C/N ratio in AD.…”

Section: Introductionmentioning

confidence: 98%

Anaerobic Co-digestion of Pig Manure with Dried Maize Straw

et al. 2016

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The anaerobic co-digestion of pig manure (PM) with dried maize straw (DMS) was studied at 35 °C with a volatile solid (VS) ratio (VSPM/VSDMS) of 1:2 in a continuously stirred tank reactor, and the digestions of mono-PM and mono-DMS were evaluated under the same conditions. The organic loading rates (OLRs) of 2, 3, and 4 g VS/L/d were studied and found to correspond to hydraulic retention times (HRTs) of 60, 40, and 30 d, respectively. Under the condition of long HRT and low OLR, PM could be degraded completely. The co-digestion of PM with DMS showed the most stable performance in TAN, whereas TAN in mono-PM increased with the increase of OLR. The specific methane yield (SMY) did not have a linear correlation with OLR, since HRT changed with different OLR. The maximum average SMY in the co-digestion reactor was 272 mL/g VS-fed at an OLR of 3 g VS/L/d and an HRT of 40 d. The SMY in mono-DMS digestion was the lowest and it decreased with the increase of OLR.

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Improved biogas production from rice straw by co-digestion with kitchen waste and pig manure

Cited by 262 publications

References 25 publications

Straw- and slurry-associated prokaryotic communities differ during co-fermentation of straw and swine manure

Straw- and slurry-associated prokaryotic communities differ during co-fermentation of straw and swine manure

Effects of co-substrate on biogas production from cattle manure: a review

Anaerobic Co-digestion of Pig Manure with Dried Maize Straw

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