Removal of chromium (VI) from aqueous solutions using Diospyros discolor seed activated with nitric acid: isotherm and kinetic studies-Reference-Cited by-同舟云学术

Removal of chromium (VI) from aqueous solutions using Diospyros discolor seed activated with nitric acid: isotherm and kinetic studies

Published:2019-03-15 Issue:6 Volume:79 Page:1214-1221
ISSN:0273-1223
Container-title:Water Science and Technology
language:en
Short-container-title:

Author:

Arrisujaya Dian¹,Ariesta Nina¹,Maslahat Mamay¹

Affiliation:

1. Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Nusa Bangsa, Jl. KH. Sholeh Iskandar Km 4, Bogor 16166, West Java, Indonesia

Abstract

Diospyros discolor seed activated with nitric acid was investigated for removing Cr(VI) from aqueous solutions. Batch experiments were used to determine the adsorption efficiency, effect of pH, adsorption isotherm, and kinetics. Langmuir and Freundlich adsorption models were used to analyze data of Cr(VI) uptake. Fourier transform infrared spectroscopy was used to investigate the functional groups and surface morphology was checked using a scanning electron microscope, coupled with energy dispersive spectroscopy. The optimum pH in Cr(VI) uptake was 3.5 and the maximum adsorption efficiency reached 100% at 60 min.

Funder

Kementerian Riset Teknologi Dan Pendidikan Tinggi Republik Indonesia

Publisher

IWA Publishing

Subject

Water Science and Technology,Environmental Engineering

Link

http://iwaponline.com/wst/article-pdf/79/6/1214/617593/wst079061214.pdf

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