The Effect of the Monosubstituted Benzenes Functional Groups on the Inhibition of Methane Gas Biosynthesis

• 作者: Damien S. T. Tshibangu Dorothée D. Tshilanda Kalombo Kayembe Lisika Makambo Lolofo Basosila Pius T. Mpiana Pole C. Sikulisimwa Rigobertine K. Tati
• 来源期刊: 可持续生物质能源系统(英文)
• 学科: 医学
• 关键词: Monosubstituted AROMATICS METHANE Gas BIOSYNTHESIS INHIBITION Digested PIG MANURE
• 年，卷（期）: kcxswznyxtyw_2012,（4）
• 页码范围: 92-96
• 页数: 5页
• 分类号: R73

摘要

Aromatic compounds are inhibitors of methane biosynthesis in anaerobic treatment of solid wastes and industrial effluents. Anaerobic treatment of solid wastes and industrial effluents may be limited by the methanogenic bacteria inhibition exerted by these types of compounds, the production of biogas is not possible and the organic matter contained in the effluent is not reduced. These effluents poured in the nature can be the basis of the pollution. The objective of this study is to evaluate the effect of monosubstituted aromatic compounds functional groups on the methanogenic inhibition. The toxicity to acetoclastic methanogenic bacteria has performed in serum flasks, utilizing digested pig manure as inoculums, by measuring methane production. The nature of aromatic functional groups was observed to have a profound effect on the toxicity of the monosubstituted aromatics. Among the monosubstituted aromatic, the chlorobenzene was the most toxic with 50% of inhibition occurring at the concentration of 30.08 mg/l. In contrast, benzoic acid is the least inhibitory with IC50 of 2515.20 mg/l. The partition coefficient octanol/water (logPoct), an indicator of hydrophobicity, had a significant correlation with the methanogenic toxicity.