Grass as a high potential by-product: Buffalo grass to biogas and the increase of system performance and stability

Sawanon, Suriya; Leungprasert, Suchat; Sillapacharoenkul, Boonsong; Khunanake, Roj; Soiklom, S.; Sinbuathong, Nusara

doi:10.1016/j.ijhydene.2022.01.042

Cited by 4 publications

(1 citation statement)

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“…It is a complex biological process in which organic raw materials are converted into biogas, by means of a consortium of microorganisms that are sensitive to or completely inhibited by oxygen (Sánchez-Hernández et al , 2013) et al , 2022) Many studies explored the anaerobic digestion process for many different types of biowastes which affect biogas production according to their type, nature, and concentration. These biowastes are chicken manure (Jurgutis et al , 2020(Jurgutis et al , , mahmoud et al , 2022, sewage sludge (Abdel daiem et al , 2021, Jeong et al , 2021, cow manure (Jafari-Sejahrood et al , 2019, McVoitte andClark, 2019), swine manure (de Castro e Silva et al , 2022, Hollas et al , 2021, macroalgal biomass (Farghali et al , 2021), cattle manure (Dong et al , 2019), submerged aquatic plant (Hydrilla verticillata) (Chen et al , 2016), corn stover (Arias et al , 2021), food waste (Anaya Menacho, Mazid, 2022, Muratcobanoglu et al , 2020), vegetable peel (Lahbab et al , 2021, pig manure (Li et al , 2020), sheep manure (Li and Zhang, 2022), wild tree wastes (Mahmoodi-Eshkaftaki and Mahmoudi, 2021), rice straw (Mussoline et al , 2012), Buffalo grass (Sawanon et al , 2022), cotton straw (Wang et al , 2021), poultry manure (Yılmaz and Şahan, 2020).…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Biogas Production: Short-Term Evaluation of Biogas Unit in Egypt

Ashor,

abdelnaby,

gouda

et al. 2023

Annals of Agricultural Science, Moshtohor

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In this study, a medium scale biogas digester has been operated to treat the cattle manure of 50 animals producing about 1000 kg of manure per day. The volume of digester is 200 m 3 and was designed to produce biogas for a 50 kWh/day electric generator and 28 day the hydraulic retention time (HRT) with daily feeding rate 6 m 3 of substrate. From the evaluation results, the daily feeding rate is 5 m 3 and HRT of 40 day. The biogas yield reached 11.51 m 3 /day and the CH 4 and CO 2 concentration ranged from 37 % to 61 % and from 13.3 % to 37.8 %, respectively. On the other hand, a reduction in the organic contents of substrates is explored because of the anaerobic digestion process. These contents are volatile fatty acids (VFAS), carbon to nitrogen ratio (C/N), volatile solids (VS), and chemical oxygen demand (COD), where the maximum reduction percentages of VFAS, C/N ratio, VS, and COD are 78.2 %, 76.7 %, 76.5 %, and 87.0 %, respectively. Furthermore, the concentration of total nitrogen (TN), total phosphorus (TP), total potassium (TK), NO 3 -N, and NH 4 +N achieved an increase in the digestate compared with their corresponding values in substrates, especially TP and TK. From the evaluation results, we can put and illustrate some important issues that may increase the biogas digester efficiency; (1) the biogas purification unit should be fixed and operated to reduce the CO 2 , H 2 S and O 2 contents, (2) The substrate pH, and total solid should be more controllable, (3) The digestates should be treated before use for further benefits and more stable with environment, and (4) a periodically maintenance plan should be followed for improving biogas production and increase the life time of the digester components.

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