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标题：Inhibitory effect of Sodium Benzoate as Preservative Material in the Biogas Production in a Batch Anaerobic Digestion Process
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作者：Indro Sumantri ; Luqman Buchori ; Didi Dwi Anggoro 等
期刊名称：Inżynieria Ekologiczna
印刷版ISSN：2081-139X
电子版ISSN：2392-0629
出版年度：2020
卷号：21
期号：8
页码：120-128
DOI：10.12911/22998993/127005
出版社：Polish Society of Ecological Engineering (PTIE)
摘要：Sodium benzoate has been used a food preservative worldwide.The effect of sodium benzoate as a preservative in the wastewater treatment was examined from the biogas formation.Research was conducted in some batch mode reactor systems employing various ratios of activated sludge and solution of sodium benzoate volume.The MLSS of activated sludge used was 12 g/L, while the volume ratios of activated sludge and sodium benzoate ranged from 0 to 100%.Concentrations of sodium benzoate used were 50, 100, and 200 mg/L.Biogas samples were measured every two days for 60 days.The results showed that the volume ratio of activated sludge and sodium benzoate of 60% and 40% was a turning point where the existence of sodium benzoate influenced the formation of biogas.There were significant reductions of biogas formation from 200.6 mL to 66.6 mL, 159.8 mL to 66.0 mL and 130.2 mL to 54.0 mL for the initial SB concentrations of 50, 100, and 200 mg/L.The kinetic parameters of the Modified Gompertz equation exhibited the greatest degree of confidence of 95%.
关键词：biogas; batch; anaerobic; sodium benzoate; Gompertz equation