Effects of different henna plant parts on enhanced removal of an azo dye Orange II: Biotic and abiotic contributions

Effects of different henna plant parts on enhanced removal of an azo dye Orange II: Biotic and abiotic contributions
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不同指甲花植物部位对偶氮染料 Orange II 增强去除的影响:生物和非生物贡献

DOI:
10.1002/ep.12248
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发表时间:
2016-03
影响因子:
2.8
通讯作者:
Xie Zhengmiao
Xie Zhengmiao
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
Tang Junhong;Wu Mengke;Huang Jingang;Chen Jianjun;Han Wei;Xie Zhengmiao

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研究了指甲花(Lawsonia)植物不同部位生物量对偶氮染料橙子II(AO 7)去除效果的影响。建立了污泥控制(R1)和添加指甲花(R2)、茎(R3)和种子(R4)的分批系统。结果表明,指甲花粉对AO 7的去除均有促进作用。在批式试验结束时(76 h),R1、R2、R3和R4对AO 7的去除率分别为18.3%、82.7%、83.7%和65.6%,还原副产物硫酸与去除的AO 7的摩尔比分别为22.1%、81.7%、30.4%和53.9%。R2对AO 7的去除主要通过生物还原途径,而R3主要通过非生物吸附途径。这两种途径在R4中对AO 7去除的作用相当。在厌氧条件下,指甲花植物生物量,特别是花,在同时提供电子供体和氧化还原介质(指甲花醌)方面发挥了多重作用,从而增强了AO 7的生物还原。© 2015美国化学工程师学会环境规划,35:404-410,2016
The effects of different parts of henna (Lawsonia) plant biomass on the removal of an azo dye Orange II (AO7) were investigated. The batched system of sludge control (R1), and those with the addition of henna flower (R2), stem (R3), and seed (R4) were set up. The results indicated that henna powder all benefit the AO7 removal. At the end of batch test (76 h), the AO7 removal in R1, R2, R3, and R4 were 18.3%, 82.7%, 83.7%, and 65.6%, respectively; and the molar ratios of the reductive byproduct of sulfanic acid to the removed AO7 were 22.1%, 81.7%, 30.4% and 53.9%, respectively. AO7 removal in R2 was mainly attributed to the bio‐reducing pathway, while that in R3 was due to the abiotic adsorption pathway. These two pathways were in comparable role on AO7 removal in R4. In anaerobic conditions, henna plant biomass, especially the flower, played a multiple role in simultaneously providing electron donor and redox mediator (lawsone), thus enhancing the AO7 bio‐reduction. © 2015 American Institute of Chemical Engineers Environ Prog, 35: 404–410, 2016
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