Response surface methodology as a statistical tool for optimization of removal of chromium (VI) from aqueous solution by Teff ( Eragrostis teff ) husk activated carbon
TLDR
In this article, a central composite design was used to examine the effect of the interaction of process parameters and to optimize the process using Design Expert version 7.0 software, and the optimized removal efficiency of Teff husk activated carbon (95.597%) was achieved at 1.92 pH, 87.83 mg/L initial concentration, 20.22 g/L adsorbent dose, and 2.07 H contact time.Abstract:
Recently, rapid industrialization leads to excessive release of heavy metals such as Cr(VI) in the environment. Exposure to chromium (VI) can cause kidney and liver damage, depressed immune systems, and a variety of cancers. Therefore, treatment of Cr(VI) containing wastewater is mandatory. This study aims to optimize the removal of Cr(VI) from aqueous solution using locally available Teff husk activated carbon adsorbent. The laboratory-based study was conducted on the optimization of Cr(VI) removal efficiency of Teff husk activated carbon from aqueous solution. A central composite design was used to examine the effect of the interaction of process parameters and to optimize the process using Design Expert version 7.0 software. The optimized removal efficiency of Teff husk activated carbon (95.597%) was achieved at 1.92 pH, 87.83 mg/L initial concentration, 20.22 g/L adsorbent dose, and 2.07 H contact time. The adsorption of Cr(VI) on Teff husk activated carbon was found to be best fitted with pseudo-second-order kinetics and Langmuir isotherm model of the adsorption. Teff husk activated carbon can be used as an efficient adsorbent for removal of chromium (VI) from contaminated water. Column adsorption needs to be studied in the future.read more
Citations
More filters
Journal ArticleDOI
An extensive review on chromium (vi) removal using natural and agricultural wastes materials as alternative biosorbents.
TL;DR: In this paper, the potential of several natural and agricultural wastes as economical biosorbents for the reduction of Cr(VI) ions from polluted water has been reviewed, as well as the impact of adsorption factors on heavy metals eradication.
Journal ArticleDOI
The application of agricultural wastes for heavy metals adsorption: A meta-analysis of recent studies
TL;DR: In this article, a meta-analysis technique was applied to identify gaps in contemporary biosorbents research, which indicated that when utilizing different types of raw biomass as adsorbents, modifying the biomasses into carbon-enriched forms would be a preferable option.
Journal ArticleDOI
The application of agricultural wastes for heavy metals adsorption: A meta-analysis of recent studies
TL;DR: In this article , a meta-analysis technique was applied to identify gaps in contemporary biosorbents research and evaluated the capability of eleven different types/components agricultural wastes for the adsorption of eight heavy metal.
Journal ArticleDOI
Comparative adsorptive performance of adsorbents developed from sugar industrial wastes for the removal of melanoidin pigment from molasses distillery spent wash
TL;DR: In this article, a study aimed at degrading melanoidin pigment from distillery spent wash by using impregnated Sugarcane bagasse activated carbon (SCBAC) and Modified Bagasse fly ash (MBFA) as a comparative study.
Journal ArticleDOI
Removal of Cr(VI) from Aqueous Solutions Using Biowastes: Tella Residue and Pea (Pisum sativum) Seed Shell
TL;DR: In this paper , the physicochemical properties of adsorbents were studied, and the adsorents were further characterized using FTIR and XRD, which indicated the potential applicability of TR and PSS for the treatment of Cr(VI) contaminated water.
References
More filters
Journal ArticleDOI
Removal of Heavy Metals from Industrial Wastewaters: A Review
TL;DR: A review of membrane filtration, ion exchange, ion-exchange, adsorption, chemical precipitation, nanotechnology treatments, electrochemical and advanced oxidation processes are discussed in this article.
Journal ArticleDOI
Global, regional, and country level need for data on wastewater generation, treatment, and use
Toshio Sato,Manzoor Qadir,Manzoor Qadir,Manzoor Qadir,Sadahiro Yamamoto,Tsuneyoshi Endo,Ahmad Zahoor,Ahmad Zahoor +7 more
TL;DR: In this article, the authors find that only 55 countries have data available on all three aspects of wastewater -generation, treatment, and use, while there is no information available from 57 countries.
Journal ArticleDOI
Batch Sorption Experiments: Langmuir and Freundlich Isotherm Studies for the Adsorption of Textile Metal Ions onto Teff Straw (Eragrostis tef) Agricultural Waste
TL;DR: In this article, the results indicate that the freely abundant, locally available, low-cost adsorbent, Teff straw can be treated as economically viable for the removal of metal ions from textile effluents.
Journal Article
The United Nations World Water Development Report 2017 Wastewater: The Untapped Resource
TL;DR: In this paper, the United Nations Educational, Scientific and Cultural Organization (UNESCO) published year: 2017 ISBN: 978-92-3-100201-4 (1)
Journal ArticleDOI
Removal of chromium (VI) from aqueous medium using chemically modified banana peels as efficient low-cost adsorbent
TL;DR: In this article, the adsorption of hexavalent chromium Cr(VI) from aqueous solutions was investigated by acrylonitrile grafted banana peels (GBPs).
Related Papers (5)
Treatment of Water Containg Chromium (VI) Using Rice Husk Carbon As a Newlow Cost Adsorbent
S.R. Singh,A.P. Singh +1 more