东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2012, Vol. 33 ›› Issue (7): 992-994+999.DOI: -

• 论著 • 上一篇    下一篇

硝酸掺杂钛精矿吸附去除甲基橙

雷雪飞;薛向欣;杨合;   

  1. 东北大学秦皇岛分校;东北大学材料与冶金学院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家重点基础研究发展计划项目(2007CB613504);;

Removal of methyl orange from aqueous solution by nitric acid-modified titanium ore

Lei, Xue-Fei (1); Xue, Xiang-Xin (2); Yang, He (2)   

  1. (1) Northeastern University at Qinhuangdao, Qinhuangdao 066004, China; (2) School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Lei, X.-F.
  • About author:-
  • Supported by:
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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.

关键词: 硝酸掺杂, 钛精矿, 脱色率, 甲基橙, 正交试验

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°C calcination temperature, 3 h soaking time, and 10°C/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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