Characterization of leaf waste based biochar for cost effective hydrogen sulphide removal from biogas.
Characterization of leaf waste based biochar for cost effective hydrogen sulphide removal from biogas.
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DOI：
10.1016/j.biortech.2017.11.093
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发表时间：
2018-02
影响因子：
11.4
通讯作者：
Shivali Sahota;V. Vijay;P. Subbarao;Ram Chandra;P. Ghosh;Goldy Shah;Rimika Kapoor;V. Vijay;
中科院分区：
文献类型：
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作者：
Shivali Sahota;V. Vijay;P. Subbarao;Ram Chandra;P. Ghosh;Goldy Shah;Rimika Kapoor;V. Vijay;
沿着当地沼气系统，安装分散的沼气生产装置，可以有效地满足农村人口日益增长的能源需求。因此，容易获得的树叶废弃物被用来在不同温度下制备生物炭，并用于通过厌氧消化装置产生的沼气中H2S的去除。结果表明，在400 °C下碳化树叶废弃物制备的生物炭在连续吸附塔中吸附25 min，可有效去除沼气中84.2%H2S（从1254 ppm到201 ppm）。随后，利用工业分析、CHNS、BET比表面积、FTIR、XRD和SEM-EDX等分析手段，研究了树叶废弃物生物炭吸附H2S前后的组成、结构和形态特征。研究发现，树叶废弃物生物炭的BET比表面积、孔径和结构特性对生物气中H2S的脱除起着至关重要的作用。
Installation of decentralized units for biogas production along with indigenous upgradation systems can be an effective approach to meet growing energy demands of the rural population. Therefore, readily available leaf waste was used to prepare biochar at different temperatures and employed for H2S removal from biogas produced via anaerobic digestion plant. It is found that biochar prepared via carbonization of leaf waste at 400 °C effectively removes 84.2% H2S (from 1254 ppm to 201 ppm) from raw biogas for 25 min in a continuous adsorption tower. Subsequently, leaf waste biochar compositional, textural and morphological properties before and after H2S adsorption have been analyzed using proximate analysis, CHNS, BET surface area, FTIR, XRD, and SEM-EDX. It is found that BET surface area, pore size, and textural properties of leaf waste biochar plays a crucial role in H2S removal from the biogas.