Volatile organic acid adsorption and cation dissociation by porphyritic andesite for enhancing hydrolysis and acidogenesis of solid food wastes
文献类型: 外文期刊
第一作者: Cheng, Fan
作者: Cheng, Fan;Li, Ming;Li, Dawei;Jiang, Weizhong;Li, Baoming;Chen, Ling;Kitamura, Yutaka
作者机构:
关键词: Porphyritic andesite;Volatile organic acid adsorption;Cation dissociation;Hydrolysis;Solid food wastes
期刊名称:BIORESOURCE TECHNOLOGY ( 影响因子:9.642; 五年影响因子:9.237 )
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年卷期:
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收录情况: SCI
摘要: Volatile organic acid adsorption, cation dissociation by porphyritic andesite, and their effects on the hydrolysis and acidogenesis of solid food wastes were evaluated through batch experiments. The acetic acid adsorption experiments show that pH was mainly regulated by H+ adsorption. The mono-layer and multi-layer adsorption were found under the low (8.3-83.2 mmol/L) and high (133.22-532.89 mmol/L) initial acetic acid concentration, respectively. The dissociated cations concentration in acidic solution showed the predominance of Ca2+. Porphyritic andesite addition elevated the pH levels and accelerated hydrolysis and acidogenesis in the batch fermentation experiment. Leachate of porphyritic andesite addition achieved the highest hydrolysis constant of 22.1 x 10(-3) kg m(-2) d(-1) and VS degradation rates of 3.9 g L-1 d(-1). The highest activity of microorganisms represented by specific growth rate of ATP, 0.16 d(-1), and specific consumption rate of Ca2+, 0.18 d(-1), was obtained by adding leachate of porphyritic andesite.
分类号: Q
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