期刊信息
- 刊名： 河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
- 主办： 河北师范大学
- ISSN： 1000-5854
- CN： 13-1061/N
- 中国科技核心期刊
- 中国期刊方阵入选期刊
- 中国高校优秀科技期刊
- 华北优秀期刊
- 河北省优秀科技期刊
δ-MnO2吸附剂对废水中有机染料的去除作用
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1. 河北师范大学化学与材料科学学院, 河北石家庄 050016;
2. 沧州师范专科学校化学系, 河北沧州 061001 -
DOI：
Removal of Organic Dye from Wastewater with δ-MnO2
摘要/Abstract
以甲基橙溶液模拟有机染料废水，研究了δ-MnO2吸附剂对有机染料的吸附特性及影响吸附效果的主要因素。结果表明:在0。05 mol/L的NaNO3介质中，δ-MnO2甲基橙体系的吸附-pH曲线呈“反S型”，去除率随pH值的降低而增大。甲基橙在δ-MnO2/水界面上的吸附可用Langmuir吸附等温方程进行描述，温度对吸附等温线影响很小。吸附剂投加量对吸附等温线影响显著，随吸附剂投加量的增大而下移。在25℃，pH6。0、吸附剂投加量为200 mg/L的条件下，甲基橙的饱和吸附量为263 mg/g。甲基橙在δ-MnO2/水界面上的吸附为不可逆过程。
The adsorption characteristics of methyl orange simulating dye on δ-MnO2 and their main affecting factors were studied.The results showed that the adsorption-pH curves have shown "reverse S-shape" in(0.05 mol/L) NaNO3 solution.In addition,the tendency of the adsorption was downward with the increasing of pH value,which was more evident in the middle than at two ends.Langmuir adsorption isotherm was very fit for the adsorption date.Temperature had little effect on adsorption isotherm.But adsorption isotherm decreased evidently with the increasing of adsorbent dose.When the temperature was 25 ℃ and pH6.0,the maximum amount of adsorption was 263 mg/g.It was found that the adsorption of methyl orange on δ-MnO2 was irreversible.