Batch and semi-continuous anaerobic co-digestion of goose manure with alkali solubilized wheat straw: A case of carbon to nitrogen ratio and organic loading rate regression optimization

Hassan, Muhammad; Ding, Weimin; Umar, Muhammad; Rasool, Ghulam

doi:10.1016/j.biortech.2017.01.025

Cited by 65 publications

(31 citation statements)

References 30 publications

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“…Hassan et al [31] have observed that the stability of methanogenic activity requires a suitable C/N ratio. The lowest yield of biogas was produced due to rapid microbial degradation of nitrogen when the co-substrate was provided with a high C/N ratio.…”

Section: C/n Ratio and Temperature Optimization Of Batch Anaerobic Comentioning

confidence: 99%

“…The results indicated that a food waste to wastewater ratio of 10:90 yielded the highest BMP under mesophilic conditions (0.78 ml CH 4 /mg VS removal). Under thermophilic conditions, a 10:90 ratio produced a lower BMP (0.39 ml CH 4 / mg VS removal) than under mesophilic conditions, because the thermophilic process was more sensitive to environmental changes than the mesophilic process [31]. The high occurrence of ammonium and volatile acids usually inhibits the activity of thermophilic digestion [32].…”

Section: C/n Ratio and Temperature Optimization Of Batch Anaerobic Comentioning

confidence: 99%

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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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Section: C/n Ratio and Temperature Optimization Of Batch Anaerobic Comentioning

confidence: 99%

Section: C/n Ratio and Temperature Optimization Of Batch Anaerobic Comentioning

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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“…Compared with mono-substrate digestion, co-digestion has many benefits including dilution of potential toxic compounds, synergistic effects of microorganisms, improved balance of nutrients, increased digestion rate and better biogas yield (Sosnowski et al 2003 ; Cuetos et al 2011 ). Many studies have been reported on anaerobic co-digestion with crop stalk and animal manure (Søndergaard et al 2015 ; Awais et al 2016 ; Hassan et al 2017 ). The substrate selection for co-digestion depends from the amount of feedstock and the cost of collection and transportation (Asam et al 2011 ).…”

Section: Introductionmentioning

confidence: 99%

Anaerobic digestion performance of sweet potato vine and animal manure under wet, semi-dry, and dry conditions

Zhang

et al. 2018

AMB Expr

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Sweet potato vine (SPV) is an abundant agricultural waste, which is easy to obtain at low cost and has the potential to produce clean energy via anaerobic digestion (AD). The main objectives of this study were to reveal methane production and process stability of SPV and the mixtures with animal manure under various total solid conditions, to verify synergetic effect in co-digestion of SPV and manure in AD systems, and to determine the kinetics characteristics during the full AD process. The results showed that SPV was desirable feedstock for AD with 200.22 mL/g VSadded of methane yield in wet anaerobic digestion and 12.20 Lmethane/Lworking volume in dry anaerobic digestion (D-AD). Synergistic effects were found in semi-dry anaerobic digestion and D-AD with each two mixing feedstock. In contrast with SPV mono-digestion, co-digestion with manure increased methane yield within the range of 14.34–49.11% in different AD digesters. The values of final volatile fatty acids to total alkalinity (TA) were below 0.4 and the values of final pH were within the range of 7.4–8.2 in all the reactors, which supported a positive relationship between carbohydrate hydrolysis and methanogenesis during AD process. The mathematical modified first order model was applied to estimate substrate biodegradability and methane production potential well with conversion constant ranged from 0.0003 to 0.0953 1/day, which indicated that co-digestion increased hydrolysis efficiency and metabolic activity. This work provides useful information to improve the utilization and stability of digestion using SPV and livestock or poultry manure as substrates.

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“…The presence of inoculum benefits the biodigestion process of the raw material, improving the methane content in the biogas composition (Xavier et al, 2010;Hassan et al, 2017). Cattle manure inoculum was collected and transported in borosilicate vials and kept under refrigeration conditions at 10°C.…”

Section: Methodsmentioning

confidence: 99%

Potential for biogas generation from sweet potato genotypes

Batista¹,

Guerra²,

Resende³

et al. 2019

Rev. ambiente água

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Biogas is a technology that enables the generation of energy through the process of anaerobic biodigestion, and sweet potato is an option as an energy production source. This research evaluated biogas production in anaerobic biodigesters and characterized the physico-chemical composition of two commercial sweet potato cultivars, BRS Cuia and BRS Rubissol, and two genotypes, Bela Vista and Laranjeiras. Variance analysis, the Tukey test and the physical-chemical characterization were completed, and the results were correlated using principal component analysis (PCA). In the analyses of tuberous root composition, significant differences between the genotypes were observed because of the influence of the absorption of moisture, decomposition, and variations in the yield and quality of roots. For the biochemical methane potential (BMP) test, the estimate of biogas production was 2,906.5 liters ha-1 for the cultivar BRS Cuia, 2,712.4 liters ha-1 for Laranjeiras, 2,906.5 liters ha-1 for BRS Rubissol, and 398,2 liters ha-1 for Bela Vista. The PCA analysis of sweet potato genotypes, physical-chemical and agronomic parameters showed all genotypes have a direct correlation with the amount of reducing sugars and humidity, with 97.77% of the data variability explained. The Laranjeiras genotype has the most significant potential to produce biogas, followed by the BRS Cuia cultivar. The results emphasize that the sweet potato crop is a good source of biomass for energy generation.

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Batch and semi-continuous anaerobic co-digestion of goose manure with alkali solubilized wheat straw: A case of carbon to nitrogen ratio and organic loading rate regression optimization

Cited by 65 publications

References 30 publications

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

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

Anaerobic digestion performance of sweet potato vine and animal manure under wet, semi-dry, and dry conditions

Potential for biogas generation from sweet potato genotypes

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