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首页> 外文期刊>RSC Advances >Characterization of biochars derived from different materials and their effects on microbial dechlorination of pentachlorophenol in a consortium
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Characterization of biochars derived from different materials and their effects on microbial dechlorination of pentachlorophenol in a consortium

机译：不同材料源自不同材料的生物脉冲的特征及其对联盟五氯苯酚微生物脱氯的影响

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摘要

The properties of biochars derived from different raw materials (rice husk, bamboo, caragana, and garbage) and their effects on the microbial reductive dechlorination of pentachlorophenol (PCP) were investigated to understand how biochars influence the biotransformation of environmental pollutants. The results indicated that only caragana-derived biochar showed stable electron transfer activity for PCP dechlorination. Electro(chemical) analyses revealed that caragana biochar had the highest electrical conductivity (EC) (2.22 x 10(6) S cm(-1)), while those of the other biochars were <1500 S cm(-1). The electron transfer capacities were within the ranges of 61.63-155.83 mol e(-) g(-1). Cyclic voltammetry analysis suggested that there were no obvious redox peaks for the biochars, while the Fourier transform infrared analysis showed similar transmission spectra with variable absorption intensity; this suggested that all biochars possessed similar structures and functional group classes and the enhancement of PCP dechlorination was not attributable to the redox reaction. Overall, the beneficial effects of caragana biochar on PCP dechlorination depended on the EC rather than the redox functional groups, possibly because high EC values enabled the highest electron transfer, and thus resulted in the greatest promotion of reductive dechlorination activity.
机译：研究了来自不同原料（稻壳，竹，雄腭）的生物触发器的性质及其对诸如五氯苯酚（PCP）的微生物还原脱氯的影响，以了解生物肢如何影响环境污染物的生物转化。结果表明，只有Caragana衍生的Biochar才显示出PCP脱氯的稳定电子转移活性。 Electro（Chemical）分析显示，Caragana Biochar具有最高的电导率（EC）（2.22×10（6）厘米（-1）），而其他生物脉冲<1500s cm（-1）。电子转移能力在61.63-155.83mol E（ - ）g（-1）的范围内。循环伏安法分析表明，生物触发器没有明显的氧化还原峰，而傅里叶变换红外分析显示出具有可变吸收强度的类似透射光谱;这表明所有Biochars都具有类似的结构和官能团类别，并且PCP脱氯的增强不归因于氧化还原反应。总体而言，Caragana Biochar对PCP脱氯的有益效果依赖于EC而不是氧化还原官能团，可能是因为高EC值使最高的电子转移，因此导致还原脱氯活性的最大促进。

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  • 来源
    《RSC Advances》 |2019年第2期|共7页
  • 作者

    Zhang Chunfang; Zhang Ning; Xiao Zhixing; Li Zhiling; Zhang Dongdong;

  • 作者单位

    Zhejiang Univ Ocean Coll Inst Marine Biol Zhoushan 316021 Zhejiang Peoples R China;

    Zhejiang Univ Ocean Coll Inst Marine Biol Zhoushan 316021 Zhejiang Peoples R China;

    Nanjing Tech Univ Coll Urban Construct Nanjing 211800 Jiangsu Peoples R China;

    Harbin Inst Technol Sch Environm State Key Lab Urban Water Resources &

    Environm Harbin 150090 Heilongjiang Peoples R China;

    Zhejiang Univ Ocean Coll Inst Marine Biol Zhoushan 316021 Zhejiang Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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