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Start Over Author "Tahir Muhmood" Publisher american chemical society (acs)
4 results on '"Tahir Muhmood"'

4. Adsorption Properties of Pb2+ by Amino Group’s Functionalized Montmorillonite from Aqueous Solutions

Author

Wu Lei, Yuting Chu, Tahir Muhmood, Yang Lei, Wang Along, Fengyun Wang, Mingzhu Xia, and Xu Ying

Subjects
Aqueous solution, Chemistry, Ligand, General Chemical Engineering, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Endothermic process, 0104 chemical sciences, chemistry.chemical_compound, Adsorption, Montmorillonite, Wastewater, Diethylenetriamine, Fourier transform infrared spectroscopy, 0210 nano-technology, Nuclear chemistry
Abstract

The remediation of wastewater containing Pb2+ has attracted much attention due to the harm of Pb2+ to the environment and human health. A promising adsorbent, functionalized montmorillonite modified with a ligand diethylenetriamine (DETA) was prepared under mild reaction conditions. The modified montmorillonite (DETA-MMT) and nature montmorillonite (Na-MMT) were then characterized with the help of XRD, FTIR, TG/DTG, and BET. It was revealed that the modifier DETA was successfully inserted into interlayers of montmorillonite, as demonstrated by the characterizations. Batch adsorption experiments of Pb2+ onto Na-MMT and DETA-MMT in solutions were studied as a function of various parameters, such as pH, contact time, initial concentration, and temperature. The maximum adsorption capacity of DETA-MMT was 61.1 mg g–1, which had more than doubled compared with that of Na-MMT. The adsorption thermodynamics of Pb2+ by DETA-MMT was studied, and it showed a endothermic process. The adsorption kinetics of two sample...

Published
2018
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