Enhanced reduction of an azo dye using henna plant biomass as a solid-phase electron donor, carbon source, and redox mediator.
Enhanced reduction of an azo dye using henna plant biomass as a solid-phase electron donor, carbon source, and redox mediator.
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DOI：
10.1016/j.biortech.2014.03.143
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发表时间：
2014-06
影响因子：
11.4
通讯作者：
Jingang Huang;Shushan Chu;Jianjun Chen;Yi Chen;Zhengmiao Xie
中科院分区：
文献类型：
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作者：
Jingang Huang;Shushan Chu;Jianjun Chen;Yi Chen;Zhengmiao Xie
研究了指甲花植物生物质作为碳源、电子供体和氧化还原介体 (RM) 对 Orange II (AO7) 增强生物还原的多重影响。结果表明，含有指甲花粉的培养物中 AO7 的最大还原率是不含指甲花的污泥对照培养物的约 6 倍。一方面，通过释放可用的电子供体可以有利地增强 AO7 的还原；另一方面，相关的指甲花酮可以充当固定RM，并在电子从释放的电子供体到最终电子受体AO7的穿梭中发挥潜在作用。每个实验期间的可溶性化学需氧量 (SCOD) 和 FTIR 光谱表明，AO7 还原减弱以及指甲花粉的保留可能不是由于固定指甲花酮的缺乏，而是由于电子供体的不足。
The multiple effects of henna plant biomass as a source of carbon, electron donor, and redox mediator (RM) on the enhanced bio-reduction of Orange II (AO7) were investigated. The results indicated that the maximum AO7 reduction rate in the culture with henna powder was ∼6-fold that in the sludge control culture lacking henna. On the one hand, AO7 reduction can be advantageously enhanced by the release of available electron donors; on the other hand, the associated lawsone can act as a fixed RM and play a potential role in shuttling electrons from the released electron donors to the final electron acceptor, AO7. The soluble chemical oxygen demand (SCOD) during each experiment and the FTIR spectra suggested that the weakened AO7 reduction along with the retention of henna powder might not be attributed to the lack of fixed lawsone but rather to the insufficiency of electron donors.