| 硝酸掺杂钛精矿吸附去除甲基橙 |
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| 引用本文： | 雷雪飞,薛向欣,杨合.硝酸掺杂钛精矿吸附去除甲基橙[J].东北大学学报(自然科学版),2012,33(7):992-994,999. |
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| 作者姓名： | 雷雪飞 薛向欣 杨合 |
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| 作者单位： | 1. 东北大学秦皇岛分校,河北秦皇岛,066004
2. 东北大学材料与冶金学院,辽宁沈阳,110819 |
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| 基金项目： | 国家重点基础研究发展计划项目，教育部重大科技支撑计划项目，中央高校基本科研业务费专项资金资助项目，河北省自然科学基金一钢铁联合研究基金资助项目 |
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| 摘 要： | 采用高能球磨法制备了一系列硝酸掺杂的钛精矿(nitric acid-modified titanium ore,NATO)吸附材料,采用正交表L9(34)安排实验,以甲基橙(MO)溶液的脱色率作为衡量吸附剂优劣的重要判据.以硝酸掺杂比例、煅烧温度、保温时间、升温速率为因素进行正交试验,基于降低能耗和成本的考虑和综合分析的基础上,得到制备NATO吸附剂的最优工艺条件:硝酸掺杂比例为2.0%,煅烧温度为300℃,保温时间为3 h,升温速率为10℃/min.在较优工艺条件下制备的NATO吸附剂对甲基橙的脱色率达到96.8%,明显优于未掺杂样品,且沉降性能较好,易于分离,是一类有应用前景的吸附材料.
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| 关 键 词： | 硝酸掺杂 钛精矿 脱色率 甲基橙 正交试验 |
Removal of Methyl Orange from Aqueous Solution by Nitric Acid-Modified Titanium Ore |
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| LEI Xue-fei,XUE Xiang-xin,YANG He.Removal of Methyl Orange from Aqueous Solution by Nitric Acid-Modified Titanium Ore[J].Journal of Northeastern University(Natural Science),2012,33(7):992-994,999. |
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| Authors: | LEI Xue-fei XUE Xiang-xin YANG He |
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| Institution: | 1.Northeastern University at Qinhuangdao,Qinhuangdao 066004,China;2.School of Materials & Metallurgy,Northeastern University,Shenyang 110819,China.) |
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| Abstract: | Nitric acid-modified titanium ore(NATO) sorbents were prepared by high energy ball milling process.The adsorption properties of NATO sorbents were evaluated by the decoloration efficiency of methyl orange(MO) under dark-state absorption.In the adsorption stage,L9(34) orthogonal experiments of different factors,for example,doping ratio,calcination temperature,soaking time and heating rate were performed.Based on the orthogonal experiments,the optimal operating parameters,2.0wt% nitric acid,300 ℃ calcination temperature,3 h soaking time,and 10 ℃/min heating rate,are obtained.In this optimal condition,the decoloration efficiency of MO reaches 96.8%,which is significantly better than the undoped samples.Thus,it is feasible to treat dye wastewater by these NATO sorbents. |
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| Keywords: | nitric acid-modified titanium ore decoloration efficiency methyl orange orthogonal test |
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