Effects of isolated fungal pretreatment on bio-methane production through the co-digestion of rice straw and buffalo dung

Noonari, Altaf Alam; Mahar, Rasool Bux; Sahito, Abdul Razaque; Brohi, Khan Muhammad

doi:10.1016/j.energy.2020.118107

Cited by 16 publications

(7 citation statements)

References 49 publications

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“…Whereas, the H, N, S, and O content were detected to be 4.14, 1.67, 0.53, and 29.45 % respectively. The results of present study are in accordance to literature [56][57][58]. Furthermore, the C/N ratio was a vital aspect in nutrients balance and bacteria strength in the AD process.…”

Section: Proximate and Ultimate Analysis Of Animal Dungsupporting

confidence: 92%

Seasonal variation in biogas production in reinforced concrete dome biogas plants with buffalo dung in Pakistan

Kandhro

Sahito

Nixon

et al. 2022

Biomass Conv. Bioref.

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In this study, a reinforced concrete dome biogas plant processing buffalo dung was functioned to investigate the seasonal variations in biogas production, biogas composition, and loss of volatile solid and methane potential of digestate slurry. These analyses were undertaken from January to May 2019. The biogas quality was assessed using gas chromatography and biogas production was measured through the G4 VuGas diaphragm gas meter while methane potential was examined on Biochemical Methane Potential (BMP) assays under mesophilic conditions. In January, when the average digester temperature was 26.1 ºC, the minimum biogas production was 0.23±0.004m 3 /kg VSadded with 67% CH4 and 32.9% CO2. In May, as the average digester temperature raised to 36.1ºC and the maximum biogas yield obtained increased to 0.384±0.006m 3 /kg VSadded, comprising 71% CH4 and 28.8% CO2. In the cold season during January, the percentage losses of biogas production were recorded to 41% because of lower slurry temperature and accumulation of fatty acids. The average slurry temperatures within the digester during the cold season were 21.3℃ at 6 A.M and 21.9 ℃ at 3 P.M; increasing to 36 ℃ at 6 A.M and 36.2 ℃ at 3 P.M for the warm season. In addition, the methane potential of 115NmL/g VSloss was observed from the digestate slurry through BMP test. The concrete dome biogas plant is favorable for its low cost and was shown to produce adequate amount of biogas to fulfill the domestic requirements during both warm and cold months in Pakistan.

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Section: Proximate and Ultimate Analysis Of Animal Dungsupporting

confidence: 92%

Seasonal variation in biogas production in reinforced concrete dome biogas plants with buffalo dung in Pakistan

Kandhro

Sahito

Nixon

et al. 2022

Biomass Conv. Bioref.

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“…Methane generation is a function of microbial growth which directly assess is very difficult in anaerobic process. But, with the help of some mathematical parameters in the use of models, it can be predicted [26,27]. Models estimate normal microbial growth per day, cumulative methane, upper asymptotic value, and coefficient of determination.…”

Section: Kinetics Appliedmentioning

confidence: 99%

Various pretreatments of canola straw with hydrogen peroxide, calcium hydroxide, silica, and Pleurotus ostreatus to improve methane yield through anaerobic co-digestion

Noonari

Shah

Mirjat

et al. 2022

Biomass Conv. Bioref.

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Canola straw (CS) is the lignocellulosic biomass and is often managed by burning in Pakistan. Pretreatment is a well-established technique for partially disintegrating the crop residue to use in anaerobic digestion. The present study efforts were made to evaluate the effect of optimal pretreatment through comparison. CS was subjected to various pretreatments using H 2 O 2 , Ca(OH) 2 (concentrations), SiO 2 (nanoparticles), and P. ostreatus (incubation times) that were used as acidic, alkaline, catalyst, and biological pretreatments to enhance methane yield by anaerobic co-digestion. On the basis of 5 g volatile solids (VS), CS was mixed with buffalo dung (BD) at a ratio of 40:60. The batch was carried out in Semi-Automatic Methane Potential Test System (SAMPTS) under mesophilic conditions. Experimental findings observed that all pretreatments effectively improve methane production. Maximum methane yields of 417.3, 386.1, 381.0, and 238.6 mlCH 4 /gVS were obtained at 0.4% Ca(OH) 2 , 0.2% H 2 O 2 , 0.5 mg SiO 2 , and 30th day P. ostreatus respectively. However, the highest biodegradability (about 27.1%) was observed in the pretreatment of H 2 O 2 . In addition, optimal results were statistically analyzed (P < 0.05) and S-Gompertz model (SGM) was applied to the highest methane yields. Kinetics parameters indicated that the applied model was best fitted. Based on economic valuation and favorable for methanogens, Ca(OH) 2 pretreatment is recommended.

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“…Among the pretreatment methods, biological pretreatment plays a key role in reducing the use of chemicals and energy. Several studies have reported that fungal treatment has positive effects on the degradation of lignocellulosic biomass (Noonari et al, 2020; Piccitto et al, 2022; Van Kuijk, Hendriks, et al, 2016; Van Kuijk, Sonnenberg, et al, 2016; Wan & Li, 2010; Zheng et al, 2014). P. ostreatus is one of the most studied WRF, capable of producing a hydrolytic enzyme complex in different lignocellulosic biomasses or under different fermentation conditions (Ding et al, 2019; Elisashvili et al, 2008; Kainthola et al, 2019; Mustafa et al, 2016; Sánchez, 2009).…”

Section: Discussionmentioning

confidence: 99%

A biorefinery model for the production of oil and biomethane using castor plants

Testa,

Corinzia,

Calcagno

et al. 2023

GCB Bioenergy

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Castor (Ricinus communis L.) is an important oilseed crop worldwide whose inedible oil is widely used in the industrial, pharmaceutical, and agricultural sectors. Castor plants show high conversion potential for use as biorefining feedstocks. The present study was conducted to investigate the effects of two nitrogen fertilization levels (0 and 120 kg N ha−1) on seed and oil yield. From a biorefinery perspective, the residual biomass of seed processing was analyzed in terms of fiber composition and biomethane production carrying out a biological pretreatment using two white‐rot fungi (Pleurotus ostreatus and Irpex lacteus). Nitrogen fertilization resulted in an increase in seed and oil yields and a difference in capsule husk composition. Fungal pretreatment of capsule husks showed promising effects on anaerobic digestion, increasing the biomethane yield compared to untreated biomass. The highest lignin degradation and the lowest cellulose loss during pretreatment were obtained with I. lacteus, and this fungal pretreatment resulted in the highest biomethane yield (103.2 NmL g−1 volatile solids) for the fertilized biomass.

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Effects of isolated fungal pretreatment on bio-methane production through the co-digestion of rice straw and buffalo dung

Cited by 16 publications

References 49 publications

Seasonal variation in biogas production in reinforced concrete dome biogas plants with buffalo dung in Pakistan

Seasonal variation in biogas production in reinforced concrete dome biogas plants with buffalo dung in Pakistan

Various pretreatments of canola straw with hydrogen peroxide, calcium hydroxide, silica, and Pleurotus ostreatus to improve methane yield through anaerobic co-digestion

A biorefinery model for the production of oil and biomethane using castor plants

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