Effect of organic loading rate during anaerobic digestion of municipal solid waste

Dhar, Hiya; Kumar, Pradeep; Kumar, Sunil; Mukherjee, Somnath; Vaidya, Atul N.

doi:10.1016/j.biortech.2015.12.004

Cited by 86 publications

(33 citation statements)

References 18 publications

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“…VS represents the organic portion of the material solids that can be digested, while the remainder of the solids is considered as fixed. The 'fixed' solids are non-biodegradable [45]. The pH value of each mixture before and after the digestion process was measured with an Oakton pH 700 meter.…”

Section: Methodsmentioning

confidence: 99%

Thermophilic Anaerobic Digestion: Enhanced and Sustainable Methane Production from Co-Digestion of Food and Lignocellulosic Wastes

et al. 2018

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Abstract:This article aims to study the codigestion of food waste (FW) and three different lignocellulosic wastes (LW) (Corn stover (CS), Prairie cordgrass (PCG), and Unbleached paper (UBP)) for thermophilic anaerobic digestion to overcome the limitations of digesting food waste alone (volatile fatty acids accumulation and low C:N ratio). Using an enriched thermophilic methanogenic consortium, all the food and lignocellulosic waste mixtures showed positive synergistic effects of codigestion. After 30 days of incubation at 60 • C (100 rpm), the highest methane yield of 305.45 L·kg −1 volatile solids (VS) was achieved with a combination of FW-PCG-CS followed by 279.31 L·kg −1 VS with a mixture of FW-PCG. The corresponding volatile solids reduction for these two co-digestion mixtures was 68% and 58%, respectively. This study demonstrated a reduced hydraulic retention time for methane production using FW and LW.

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Section: Methodsmentioning

confidence: 99%

Thermophilic Anaerobic Digestion: Enhanced and Sustainable Methane Production from Co-Digestion of Food and Lignocellulosic Wastes

et al. 2018

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“…Food waste has low total solid (TS) content, high soluble organic content, is easily degradable, and has high energy content per amount of dry mass. Excess ammonia and volatile fatty acid (VFA) accumulation are more common with anaerobic digestion of high solid content in food waste [13]. However, the composition of food waste varies, depending on the collection source [14].…”

Section: Introductionmentioning

confidence: 99%

Biogas Production by Co-Digestion of Canteen Food Waste and Domestic Wastewater under Organic Loading Rate and Temperature Optimization

et al. 2019

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The objective of this study was to characterize biogas production performance from the co-digestion of food waste and domestic wastewater under mesophilic (35 ± 1 °C) and thermophilic (55 ± 1 °C) conditions. The food waste used as a co-substrate in this study was collected from a main canteen at the Hatyai campus of Prince of Songkla University, Songkhla Province, Thailand. The optimum co-digestion ratio and temperature conditions in a batch experiment were selected for a semi-continuous experiment. Organic loading rates (OLRs) of 0.66, 0.33, and 0.22 g volatile solid (VS) L−1 d−1 were investigated in a semi-continuous experiment by continuously stirring a tank reactor (CSTR) for biogas production. The highest biomethane potential (BMP, 0.78 ml CH4 mg−1 VS removal) was achieved with a ratio of food waste to domestic wastewater of 10:90 w/v at a mesophilic temperature. An OLR of 0.22 g VS L−1 d−1 of co-digestion yielded positive biogas production and organic removal. The findings of this study illustrate how biogas production can be used for operating feed conditions and control for anaerobic co-digestion of domestic wastewater and food waste from a university canteen.

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“…This was possibly the result of elevated substrate concentration which also increased substrate flux into the bioaggregates resulting increased of microbial growth (Pirsaheb et al, 2015). Removal rate in compartment I, II and III show high removal rate of COD in all seasons while compartment IV and V showing low removal rate probably because most of the COD has been removed in first three compartments and anaerobic microbes have low nutrients (Zhu et al, 2008 OLR is chief factor which indicates the amount of volatile solids to be fed into the reactor every day (Dhar et al, 2015). OLR control the growth of sludge, microbial activity and degradation efficiency.…”

Section: Cod Removalmentioning

confidence: 99%

Seasonal Performance and Characteristic of Abr for Low Strength Wastewater

Abbasi¹

2017

Appl Ecol Env Res

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Abstract. The performance and the characteristics of a laboratory-scale ABR (anaerobic baffled reactor) were investigated during different seasons (summer, spring, autumn and winter). ABR successfully achieved COD removal efficiencies 74% during summer, 68% during autumn/spring and 62% during winter. Compartment I, II and III showed high removal rate of COD during whole study period. At lower OLR (organic loading rate), COD removal rate was high. The analysis of biogas production during all seasons showed downward trend with increase of HRTs (hydraulic retention time). Compartment I showed high VFA (volatile fatty acid) synthesis compared to others compartments. The ABR has the potential to provide a greater efficiency and be applicable for all type of seasons and temperature conditions.

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Effect of organic loading rate during anaerobic digestion of municipal solid waste

Cited by 86 publications

References 18 publications

Thermophilic Anaerobic Digestion: Enhanced and Sustainable Methane Production from Co-Digestion of Food and Lignocellulosic Wastes

Thermophilic Anaerobic Digestion: Enhanced and Sustainable Methane Production from Co-Digestion of Food and Lignocellulosic Wastes

Biogas Production by Co-Digestion of Canteen Food Waste and Domestic Wastewater under Organic Loading Rate and Temperature Optimization

Seasonal Performance and Characteristic of Abr for Low Strength Wastewater

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