《Microporous and Mesoporous Materials》杂志刊登“使用镀裹氧化铜的介孔氧化铝去除饮用水的氟”

作  者：Amit Bansiwal, Pradnya Pillewan, Rajesh B. Biniwale, Sadhana S. Rayalu

刊  物：《Microporous and Mesoporous Materials》，2010年，129卷第1-2期，54-61页

关键词：介孔氧化铝；氧化铜；除氟

摘  要：在当前研究中，氧化铜镀裹的介孔氧化铝被用于提高水中氟化物的去除率。具有氧化铜镀层的氧化铝（COCA）是由浸渍硫酸铜溶液的氧化铝在空气中煅烧至450ºC而生成的。使用XRD、SEM和BET粉末表面积分析对COCA完全特征化。观察到氧化铜镀层可使未改性氧化铝的吸附容量由2.232提高到7.770mg g^-1。通过动态试验估算不同吸附等温线和动力学参数以测定吸附容量、认识吸附机制。结果表明吸附过程符合朗缪尔等温线，并与伪二级动力学模型相吻合。由朗缪尔等温线图推断该材料的吸附容量为3.155mg g^-1。测定COCA处理前后的水质证实并不存在铜离子的泄露，并且其他指标也均在印度饮用水标准范围以内，这表明COCA能够运用于被氟污染的饮用水处理。

Copper oxide incorporated mesoporous alumina for defluoridation of drinking water

Authors: Amit Bansiwal, Pradnya Pillewan, Rajesh B. Biniwale, Sadhana S. Rayalu

Journal: Microporous and Mesoporous Materials, Volume 129, Number 1-2 (2010), 54-61

Key words: Mesoporous alumina; Copper oxide; Fluoride removal

Abstract: In the present study mesoporous alumina was modified by coating copper oxide to enhance the defluoridation of water. The copper oxide coated alumina (COCA) was synthesised by impregnating alumina with copper sulphate solution followed by calcination at 450 ºC in presence of air. The COCA was thoroughly characterised using powder XRD, SEM and BET surface area analysis. It was observed that coating of copper oxide improves the adsorption capacity of unmodified alumina from 2.232 to 7.770 mg g^-1. Various adsorption isotherm and kinetic parameters were computed using batch adsorption studies to determine the adsorption capacity and to understand the mechanism of adsorption. The results revealed that the adsorption follows Langmuir isotherm and pseudo-second-order kinetic models. The adsorption capacity obtained from Langmuir isotherm plots were 3.155 mg g^-1. Assessment of the water quality before and after treatment with COCA also confirmed that the there is no leaching of copper and other parameters were also within permissible limits of Indian drinking water standard indicating that the COCA can be used for treatment of fluoride contaminated drinking water.

原文链接：http://www.sciencedirect.com/science/article/pii/S1387181109004077