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

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

doi:10.1016/j.biortech.2015.04.033

Cited by 157 publications

(83 citation statements)

References 26 publications

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“…Based on the specific methane yield, the results of other studies related to co-digestion of dairy cattle manure (DM or CM) with other waste products are presented in Table 4. The results of the cumulative methane yield in this study are consistent with the results of a previous study by Li et al (2015), with the exception of the higher cumulative methane yield that Li et al (2016) study achieved in the batch digester under mesophilic conditions. The higher yield can be attributed to the anaerobic co-digestion of three kinds of feedstock, which enhances the positive synergistic effect and promotes microorganism activities.…”

Section: The Methane Content and Specific Methane Yieldsupporting

confidence: 95%

Mesophilic anaerobic co-digestion of aloe peel waste with dairy manure in the batch digester: Focusing on mixing ratios and digestate stability

Huang

Yun

Zhu

et al. 2016

Bioresource Technology

118

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Section: The Methane Content and Specific Methane Yieldsupporting

confidence: 95%

Mesophilic anaerobic co-digestion of aloe peel waste with dairy manure in the batch digester: Focusing on mixing ratios and digestate stability

Huang

Yun

Zhu

et al. 2016

Bioresource Technology

118

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“…Anaerobic digestion inhibition was also observed with untreated bakery waste 215 (UBW) at the co-digestion ratio of 10 and 15% (data not shown). Similar to the results from 216 algae (section 3.2), the observed inhibition at high municipal food waste (RW-FW) and 217 untreated bakery waste (UBW) co-digestion ratios was attributed to the build-up of volatile 218 organic acids, evidenced by a low pH (less than 5) of the substrate at the end of the 219 experiments of all BMP bottles with poor methane production (Li et al, 2015). 220…”

Section: Co-digestion With Solid Wastes 210supporting

confidence: 71%

Biomethane potential evaluation of co-digestion of sewage sludge and organic wastes

Wickham

Galway

Bustamante

et al. 2016

International Biodeterioration & Biodegradation

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Co-digestion of organic rich wastes and wastewater sludge to enhance biogas production has become an attractive economic possibility for water utilities. The suitability of the organic rich waste depends on its ability to produce biogas as well as its influence on the overall anaerobic digestion process. Biomethane potential evaluation was conducted to screen seven organic wastes and dehydrated algae. All co-substrates increased the bio-methane yield by three to six times compared with conventional anaerobic digestion of sewage sludge. Maximum co-digestion ratios were identifiable for most solid co-substrates including algae (6% wt/wt), undiluted food waste (5% wt/wt), bakery waste (5% wt/wt), and diluted commercial food waste (10% wt/wt). On the other hand, the maximum co-digestions ratio of beverage reject and sewage sludge was 10% (wt/wt). With the exception of fat-oil-grease, all solids free liquid co-substrates evaluated in this study showed a notable synergistic effect, to enhanced removals of total solids, volatile solids (VS) and chemical oxygen demand (COD) during anaerobic digestion. The increase in COD removal when co-digesting wastewater sludge and liquid waste was from 2 to 41%. Conversely, the co-digestion of most solid cosubstrates resulted in additional VS and COD residuals in the final biosolids. Elevated concentrations of sulphur and phosphorous in all food waste co-substrates suggest that control measures to address H2S in biogas and the accumulation of phosphorus in sludge centrate may be necessary during full scale operation. Data presented here provide the basis for subsequent pilot scale evaluation of anaerobic digestion of these organic rich wastes and wastewater sludge. Co-digestion of organic rich wastes and wastewater sludge to enhance biogas production has 12 become an attractive economic possibility for water utilities. The suitability of the organic 13 rich waste depends on its ability to produce biogas as well as its influence on the overall 14 anaerobic digestion process. Biomethane potential evaluation was conducted to screen seven 15 organic wastes and dehydrated algae. All co-substrates increased the bio-methane yield by 16 three to six times compared with conventional anaerobic digestion of sewage sludge. 17Maximum co-digestion ratios were identifiable for most solid co-substrates including algae 18 (6% wt/wt), undiluted food waste (5% wt/wt), bakery waste (5% wt/wt), and diluted 19 commercial food waste (10% wt/wt). On the other hand, the maximum co-digestions ratio of 20 beverage reject and sewage sludge was 10% (wt/wt). With the exception of fat-oil-grease, all 21 liquid co-substrates evaluated in this study showed a notable synergistic effect, to enhanced 22 removals of total solids, volatile solids (VS) and chemical oxygen demand (COD) during 23 anaerobic digestion. The increase in COD removal when co-digesting wastewater sludge and 24 liquid waste was from 2 to 41%. Conversely, the co-digestion of most solid co-substrates 25 resulted in additional VS and COD resi...

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“…The original data is further processed to generate median, maximum, minimum, and quartiles as shown in Figure 2. Box plots of TS and VS are smaller, and the whiskers do not extend as far, indicating that these properties do not differ much over the various analyzed studies, while the C/N ratio is different for the RS used in these studies with spread-out data points [10,26,28,[36][37][38][39][40][41][42]. Appl.…”

Section: Characteristics Of Rsmentioning

confidence: 90%

“…Statistical evaluation of RS characteristics reported in the literature. "n" is the number of values to calculate the median, maximum, minimum, and quartiles [10,26,28,[36][37][38][39][40][41][42].…”

Section: Characteristics Of Rsmentioning

confidence: 99%

A Review on the Fate of Nutrients and Enhancement of Energy Recovery from Rice Straw through Anaerobic Digestion

2020

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Open field burning and tilling the rice straw (RS) back into the fields causes environmental threats by contributing to the increased greenhouse gas emissions. Energy and nutrient recovery from RS through anaerobic digestion (AD) is an effective solution for its utilization. Although RS has good methane potential, its characteristics make it a difficult substrate for AD. This paper reviews the characteristics of RS, mass balance, and distribution of nutrients into liquid and solid digestate in the AD. The present review also discusses the effect of temperature, co-digestion, mixing, inoculum, organic loading rate, recycling liquid digestate, the addition of trace elements, and their bioavailability on the enhancement of biogas/methane yield in the AD of RS. In addition, the digestion of RS at various scales is also covered in the review.

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

Cited by 157 publications

References 26 publications

Mesophilic anaerobic co-digestion of aloe peel waste with dairy manure in the batch digester: Focusing on mixing ratios and digestate stability

Mesophilic anaerobic co-digestion of aloe peel waste with dairy manure in the batch digester: Focusing on mixing ratios and digestate stability

Biomethane potential evaluation of co-digestion of sewage sludge and organic wastes

A Review on the Fate of Nutrients and Enhancement of Energy Recovery from Rice Straw through Anaerobic Digestion

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