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首页> 外文期刊>Journal of Environmental Management >Removal of direct red 12B and methylene blue from water by adsorption onto Fe (III)/Cr (III) hydroxide, an industrial solid waste
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Removal of direct red 12B and methylene blue from water by adsorption onto Fe (III)/Cr (III) hydroxide, an industrial solid waste

机译：通过吸附到工业固体废物Fe（III）/ Cr（III）氢氧化物上除去水中的直接红12B和亚甲基蓝

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摘要

Removal of direct red 12B and methylene blue by adsorption onto Fe (III)/Cr (III) hydroxide was studied using various parameters such as agitation time, dye concentration, adsorbent dose and pH. Equilibrium adsorption data followed both Langmuir and Freundlich isotherms. Adsorption followed second-order rate kinetics. The Langmuir adsorption capacity (Q(o)) was found to be 5.0 and 22.8mg dye per g of the adsorbent for direct red 12B and methylene blue, respectively. Acidic pH was favorable for the adsorption of direct red 12B and basic pH for methylene blue. Desorption studies showed that chemisorption seems to be the major mode of adsorption.
机译：研究了使用各种参数（如搅拌时间，染料浓度，吸附剂剂量和pH），通过吸附到氢氧化铁（III）/铬（III）上来去除直接红12B和亚甲基蓝。平衡吸附数据遵循Langmuir和Freundlich等温线。吸附遵循二级速率动力学。对于直接红12B和亚甲基蓝，发现Langmuir吸附容量（Q（o））分别为每克吸附剂5.0和22.8mg染料。酸性pH值有利于直接红12B的吸附，而碱性pH值适合亚甲基蓝的吸附。解吸研究表明化学吸附似乎是主要的吸附方式。

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