Anaerobic co-digestion of elephant dung and biological pretreated Napier grass: Synergistic effect and kinetics of methane production

Rangseesuriyachai, Thaneeya; Boonnorat, Jarungwit; Glanpracha, Naraporn; Khetkorn, Wanthanee; Thiamngoen, Phattharamat; Pinpatthanapong, Khathapon

doi:10.1016/j.biombioe.2023.106849

Cited by 10 publications

(3 citation statements)

References 43 publications

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“…In line with the previous reports ( Chu et al, 2020 ; Yang et al, 2023 ), the two-stage AD could give the specific optimum conditions for both hydrogen-producing bacteria and methanogens in different containments due to favorable conditions for hydrolytic-acidogenic bacteria, methanogenesis may be suppressed, particularly at low pH levels. In certain cases, the methane concentration obtained exceeded the levels in this study when co-digesting NG with elephant ( Rangseesuriyachai et al, 2023 ) and chicken manure ( Yodthongdee et al, 2019 ). Nevertheless, the methane production yield still surpassed those of the two feedstocks.…”

Section: Resultscontrasting

confidence: 48%

“…The profile of Napier grass holds significant potential to be studied for biogas generation. Most reported studies have focused on using treated Napier grass to produce biogas, including chemical pretreatment with sodium hydroxide or deep eutectic solvents ( Pinpatthanapong et al, 2022 ; Gundupalli et al, 2023 ), biological pretreatment with mixed cultures enzyme ( Rangseesuriyachai et al, 2023 ), and physical pretreatment with sonication ( Song et al, 2023 ). However, there are limited studies on the use of untreated Napier grass.…”

Section: Introductionmentioning

confidence: 99%

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Co-digestion approach for enhancement of biogas production by mixture of untreated napier grass and industrial hydrolyzed food waste

Kriswantoro,

Pan,

Chu

2024

Front. Bioeng. Biotechnol.

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The co-digestion of untreated Napier grass (NG) and industrial hydrolyzed food waste (FW) was carried out in the batch reactor to investigate the effect of substrate ratios on biogas production performance. Two-stage anaerobic digestion was performed with an initial substrate concentration of 5 g VSadded/L and a Food to Microorganism Ratio (F/M) of 0.84. The 1:1 ratio of the NG and FW showed the optimum performances on biogas production yield with a value of 1,161.33 mL/g VSadded after 60 days of digestion. This was followed by the data on methane yield and concentration were 614.37 mL/g VSadded and 67.29%, respectively. The results were similar to the simulation results using a modified Gompertz model, which had a higher potential methane production and maximum production rate, as well as a shorter lag phase and a coefficient of determination of 0.9945. These findings indicated that the co-digestion of Napier grass and hydrolyzed food waste can enhance biogas production in two-stage anaerobic digestion.

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Section: Resultscontrasting

confidence: 48%

Section: Introductionmentioning

confidence: 99%

Co-digestion approach for enhancement of biogas production by mixture of untreated napier grass and industrial hydrolyzed food waste

Kriswantoro,

Pan,

Chu

2024

Front. Bioeng. Biotechnol.

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“…(2020) also demonstrated that the microbiomes of both the African Forest and Savanna elephant were similarly adapted to carbohydrate metabolism. Elephant dung has also been used in anaerobic digesters to produce biogas from lignocellulytic biomass (Rangseesuriyachai et al., 2023; Saripan & Reungsang, 2014). This highlights the emerging biotechnological importance of the elephant fecal microbiome and as such the need for more data, especially from the African Savanah elephant, L. africana .…”

Section: Introductionmentioning

confidence: 99%

A metagenomic survey of the fecal microbiome of the African savanna elephant (Loxodonta africana)

du Preez,

van der Walt,

Valverde

et al. 2024

Animal Genetics

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The African savanna elephant (Loxodonta africana) is the largest terrestrial animal on Earth and is found primarily in Southern and Eastern Africa. It is a hindgut, colonic fermenter and subsists on a diet of raw plant materials found in its grazing area. In this study the bacterial, archaeal and fungal populations of seven African savanna elephant fecal metagenomes were first characterized using amplicon sequencing. On the genus level it was observed that the p‐1088‐a5 gut group in the bacteriome, Methanocorpusulum and Methanobrevibacter in the archaeome and Alternaria, Aurobasidium, Didymella and Preussia in the mycome, predominated. Subsequently, metagenomic shotgun sequencing was employed to identify possible functional pathways and carbohydrate‐active enzymes (CAZymes). Carbohydrate catabolic pathways represented the main degradation pathways, and the fecal metagenome was enriched in the glycohydroside (GH) class of CAZymes. Additionally, the top GH families identified – GH43, GH2, GH13 and GH3 – are known to be associated with cellulytic, hemicellulytic and pectolytic activities. Finally, the CAZymes families identified in the African savanna elephant were compared with those found in the Asian elephant and it was demonstrated that there is a unique repository of CAZymes that could be leveraged in the biotechnological context such as the degradation of lignocellulose for the production of second‐generation biofuels and energy.

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Effect of nanoparticles as additive for enhancing the bio methane yield in copretreated lignocellulosic biomass under solid state anaerobic co-digestion for sustainable bioeconomy in India

Verma,

Upadhyay,

Talwar

et al. 2024

Biomass and Bioenergy

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Anaerobic co-digestion of elephant dung and biological pretreated Napier grass: Synergistic effect and kinetics of methane production

Cited by 10 publications

References 43 publications

Co-digestion approach for enhancement of biogas production by mixture of untreated napier grass and industrial hydrolyzed food waste

Co-digestion approach for enhancement of biogas production by mixture of untreated napier grass and industrial hydrolyzed food waste

A metagenomic survey of the fecal microbiome of the African savanna elephant (Loxodonta africana)

Effect of nanoparticles as additive for enhancing the bio methane yield in copretreated lignocellulosic biomass under solid state anaerobic co-digestion for sustainable bioeconomy in India

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