Optimization of methane production during anaerobic co-digestion of rice straw and hydrilla verticillata using response surface methodology

Kainthola, Jyoti; Kalamdhad, Ajay S.; Goud, Vaibhav V.

doi:10.1016/j.fuel.2018.07.094

Cited by 92 publications

(32 citation statements)

References 33 publications

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“…Other advantages ensured in the anaerobic systems include lower energy requirements, a safer and more convenient way of converting "waste" to useful products associated with urbanisation, being a predictive tool for the fulfilment of the UN Sustainability Goal to meet Global standards, having excellent nutrient recovery and high organic removal efficiencies. Drawbacks include longer hydraulic retention times (2-4 months) and high alkalinity requirements [11,18,19]. The aerobic system presents merits such as high organic removal efficiencies, excellent effluent quality and shorter start-up times (2-4 weeks).…”

Section: Anaerobic Digestion (Ad) Processmentioning

confidence: 99%

“…Demerits include longer hydraulic retention times, pretreatment requirements for delignification of lignocellulosic biomass, odour built-up in bioreactors, costs associated with CO 2 upgrading, no nutrient recovery and high energy requirements [8,12,17]. Research conducted by Kainthola et al [19] details the major differences between the anaerobic and aerobic systems of wastewater treatments, as depicted in Figure 2, demonstrating the mechanism with species required and products formed. The anaerobic/aerobic systems have also been employed largely at both municipal and industrial levels as a method for wastewater treatment for many years.…”

Section: Anaerobic Digestion (Ad) Processmentioning

confidence: 99%

“…This is generally expressed in terms of the amount of chemical oxygen demand (COD) or volatile solids (VS) of digester volume in a day and denoted as KgCOD/m 3 d or KgVS/dm 3 d. Most favourable COD removal of the canning industry effluent was found to be between 89 and 93% at OLRs of 9.8 and 10.95 kgCOD/m 3 d at an HRT of 10 h at a pH of 5.5 [15,18,19]. This prediction becomes viable during the selection of the reactor-type and other process parameters such as pH control.…”

Section: Organic Loading Rate (Olr)mentioning

confidence: 99%

See 2 more Smart Citations

Treatment of Water and Wastewater for Reuse and Energy Generation-Emerging Technologies

Tetteh¹,

Rathilal²,

Chetty³

et al. 2019

Water and Wastewater Treatment

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Fresh water quality and supply, particularly for domestic and industrial purposes, are deteriorating with contamination threats on water resources. Multiple technologies in the conventional wastewater treatment (WWT) settings have been adopted to purify water to a desirable quality. However, the design and selection of a suitable cost-effective treatment scheme for a catchment area are essential and have many considerations including land availability, energy, effluent quality and operational simplicity. Three emerging technologies are discussed, including anaerobic digestion, advanced oxidation processes (AOPs) and membrane technology, which holds great promise to provide integrational alternatives for manifold WWT process and distribution systems to mitigate contaminants and meet acceptable limitations. The main applications, basic principles, merits and demerits of the aforementioned technologies are addressed in relation to their current limitations and future research needs in terms of renewable energy. Hence, the advancement in manufacturing industry along with WWT blueprints will enhance the application of these technologies for the sustainable management and conservation of water.

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Section: Anaerobic Digestion (Ad) Processmentioning

confidence: 99%

Section: Anaerobic Digestion (Ad) Processmentioning

confidence: 99%

Section: Organic Loading Rate (Olr)mentioning

confidence: 99%

See 1 more Smart Citation

Treatment of Water and Wastewater for Reuse and Energy Generation-Emerging Technologies

Tetteh¹,

Rathilal²,

Chetty³

et al. 2019

Water and Wastewater Treatment

View full text Add to dashboard Cite

show abstract

“…The optimal pH range for efficient anaerobic digestion is 6.8-7.2. Lower pH lead to reduce growth rate of methanogens, in turn higher value of pH (alkaline) have influence on disintegration of microbial flux [15]. Temperature affects the nature of microorganism metabolism, biomass composition, dietary requirements and reaction speed.…”

Section: Introductionmentioning

confidence: 99%

“…Its inadequate value may release of high volatile fatty acids accumulation, high total ammonical nitrogen or free ammonia. Many years of research indicate that the most optimal range for bacterial growth is 20-30 and it is variable depending on the introduced substrate [15]. The industrial scale process itself has to be optimized to increase the production of biogas and methane at the same time.…”

Section: Introductionmentioning

confidence: 99%

The use of out-of-date frozen food as a substrate for biogas in anaerobic methane fermentation

Pietrzyk

Klepacz-Smółka

2018

Acta Innovations

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The declining quantity of fossil fuels and the increasing demand for energy are two of the many problems that are affecting current times. This is why there is an increasing interest in and introduction of operations related to renewable sources of energy. One of many such possibilities is to conduct the biomass methane fermentation process and to obtain clean energy in the form of biogas. The aim of this research was to analyse the biogas-generating potential (Biochemical Methane Potential) of out-of-date frozen products in the laboratory anaerobic fermentation process and the near-infrared method with appropriate Biochemical Methane Potential calibration. The results obtained showed that selected frozen products are an excellent material for use as substrates resulting in the production of high quality biogas. It gives the opportunity to continue research, mainly in terms of applications, e.g. for biogas plants, using other available products on the market and the selection of their mixtures.

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Methane production and microbial community characteristics of anaerobic codigestion of straws and chicken manure

2022

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Previous studies showed that chicken manure and straws can be used as a feedstock in the production of methane during anaerobic digestions. The objective was to determine the best mixture of chicken manure and straw in the production of methane during anaerobic digestion. In this study the effect of three volatile solid (VS) rations on methane output, pH, hydrolase activity, and microbial community structure was determined. The optimal manure-straw VS ratio was M2 (9:1), where cumulative methane output reached a maximum of 227,660 ml kg -1 in 50 d. The cellulose activity was higher in the chicken manure to straw ratio of 9 than 4 or 1. The research showed that Megasphaera and Bacteroides were important cellulose-secreting bacteria. The results show: (a) during anaerobic digestion the cellulose and lignin contents were completely degraded; (b) protease, amylase, and lipase activities were higher in M2 (9:1) than M1 (1:0) or M3 (4:1); and (c) increasing amount of straw decreased bacteria and archaea diversity. Due to the addition of straw, the uniden-tified_Prevotellaceae had good physiological activity in the acidic environment between 5 and 30 d, Candidatus_Cloacimonas, unidentified_Lentimicrobiaceae, and Ruminiclostridium were the main archaea between 40 and 50 d.

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Optimization of methane production during anaerobic co-digestion of rice straw and hydrilla verticillata using response surface methodology

Cited by 92 publications

References 33 publications

Treatment of Water and Wastewater for Reuse and Energy Generation-Emerging Technologies

Treatment of Water and Wastewater for Reuse and Energy Generation-Emerging Technologies

The use of out-of-date frozen food as a substrate for biogas in anaerobic methane fermentation

Methane production and microbial community characteristics of anaerobic codigestion of straws and chicken manure

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