Feasibility of NaOH-treatment for improving biogas production of digested Spartina alterniflora

Chen, Guang-Yin; ZhiZhou, Chang; Zhang, Zheng

doi:10.1016/j.ibiod.2014.01.027

Cited by 16 publications

(1 citation statement)

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“…To solve the slow degradation of cellulose and lignin, most previous studies used high ratios of inoculums in order to provide optimum conditions for the successful operation of anaerobic digestion [2][3][4]. More extended research activities have been carried out using chemical or thermal pre-treatments processes to accelerate the hydrolysis of lignin, which in turn leads to improve the anaerobic digestion conditions toward increase the biomethane yield [5][6][7][8][9][10][11]. Due to their high content of cellulose and lignin, few researchers have investigated the use of shumblan toward bioenergy production.…”

Section: Introductionmentioning

confidence: 99%

Co-digestion of Shumblan with Different Wastes as a Source for the Biogas Production

Farhan¹,

Lattieff²,

Atiya³

2018

alkej

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Shumblan (SH) is one of the most undesirable aquatic plants widespread in the irrigation channels and water bodies. This work focuses on boosting the biogas potential of shumblan by co-digesting it with other types of wastes without employing any chemical or thermal pretreatments as done in previous studies. A maximum biogas recovery of 378 ml/g VS was reached using shumblan with cow manure as inoculum in a ratio of 1:1. The methane content of the biogas was 55%. Based on volatile solid (VS) and C/N ratios, biogas productions of 518, 434, and 580 ml/g VS were obtained when the shumblan was co-digested with food wastes (SH:F), paper wastes (SH:P), and green wastes (SH:G) respectively. No significant changes of methane contents were observed during the anaerobic co-digestion of shumblan with the selected wastes. This noticeable increments of biogas yields proved that this sort of biomass can be utilized as a promising source for bioenergy production of industrial scale because of its economic operation. Slight pH variations indicated that the co-digestion performance has a good stability operation and no excessive amounts of volatile fatty acid were accumulated. The results also proved that by using co-digestion technology, the biodegradation of shumblan plants could be significantly accelerated supplying greater amounts of biogas yields. Moreover, the appropriate co-digestion with other wastes gave the shumblan high digestibility and, hence, there will be no need to prior pretreatment in order to boost the biogas yield.

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