Studies on manganese-nodule leached residues -: 1.: Physicochemical characterization and its adsorption behavior toward Ni2+ in aqueous system

被引：34

作者：

Parida, KM ^{[1
]}

Mallick, S ^{[1
]}

Mohapatra, BK ^{[1
]}

Misra, VN ^{[1
]}

机构：

[1] Reg Res Lab, Bhubaneswar 751013, Orissa, India

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2004年 / 277卷 / 01期

关键词：

manganese-nodule leached residues; delta-MnO2; adsorption behavior; quartz;

D O I：

10.1016/j.jcis.2004.04.057

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Physicochemical characterization of manganese-nodule leached residues was carried out by chemical analyses, XRD, TG-DTA, surface area measurement, and FTIR techniques. The material is very fine-grained (<75 pm), is cryptocrystalline to amorphous in nature, and contains mainly of delta-MnO2, quartz (alpha-SiO2), and zeolite/feldspar minerals. Physically adsorbed sulfates in the leached residue are removed by repeated water washing and the washed sample shows an appreciable increase in surface area. This is indicated by the absence of 1387 and 1099 cm(-1) peaks in the IR spectrum of the washed sample. The adsorption behavior of the washed sample toward Ni2+ was recorded as a function of time, pH, temperature, and concentrations of adsorbent and adsorbate. (C) 2004 Published by Elsevier Inc.

引用

页码：48 / 54

页数：7

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