Effect of lime loading on the performance of simultaneous lime treatment and dry anaerobic digestion of smooth cordgrass

The effects of lime loading on simultaneous lime treatment and dry digestion (SLTDD) of smooth cordgrass (SC) were evaluated at 35°C by batch reactors and leaching bed reactors (LBRs). Biogas yields of 1.5%, 3%, and 5% (w/w) lime loadings decreased by 7.1%, 20%, and 75.7%, respectively, compared wit...

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Bibliographic Details
Published inEnergy sources. Part A, Recovery, utilization, and environmental effects Vol. 38; no. 20; pp. 3048 - 3054
Main Authors Zhang, Yunhua, Liang, Yue-gan, Chen, Jian-feng, Chen, Hua
Format Journal Article
LanguageEnglish
Published Taylor & Francis 17.10.2016
Subjects
Biogas production
dry anaerobic digestion
inhibition
lime loading
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Summary:The effects of lime loading on simultaneous lime treatment and dry digestion (SLTDD) of smooth cordgrass (SC) were evaluated at 35°C by batch reactors and leaching bed reactors (LBRs). Biogas yields of 1.5%, 3%, and 5% (w/w) lime loadings decreased by 7.1%, 20%, and 75.7%, respectively, compared with no-lime treatment with 198.0 mL/g total solids (TS) by batch reactors. The LBRs with liquid recycling and pH adjustment enhanced biogas production with 148.1-236.1 mL/g TS. The inhibition occurred SLTDD may be ascribed to be high pH and temperature from lime hydration at the initial stage. The activity for methanogenic bacteria was more inhibited than other anaerobic bacteria.
ISSN:1556-7036
1556-7230
DOI:10.1080/15567036.2015.1124941