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Removal of chromium from synthetic wastewater by adsorption onto Ethiopian low-cost Odaracha adsorbent

Applied Water Science. 2020;10(11):1-11 DOI 10.1007/s13201-020-01310-3

 

Journal Homepage

Journal Title: Applied Water Science

ISSN: 2190-5487 (Print); 2190-5495 (Online)

Publisher: SpringerOpen

Society/Institution: King Abdulaziz City for Science and Technology

LCC Subject Category: Technology: Environmental technology. Sanitary engineering: Water supply for domestic and industrial purposes

Country of publisher: Germany

Language of fulltext: English

Full-text formats available: PDF, HTML

 

AUTHORS


Yohanis Birhanu (Department of Chemistry, College of Natural and Computational Science, Jigjiga University)

Seyoum Leta (Center of Environmental Science, Addis Ababa University)

Getachew Adam (Department of Industrial Chemistry, Center of Excellence in Sustainable Energy, Addis Ababa Science and Technology University)

EDITORIAL INFORMATION

Blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 13 weeks

 

Abstract | Full Text

Abstract Nowadays, Cr-loaded wastewater released from industrial activities pose an increasing risk to human health and the environment. Adsorption processes have been widely used for the removal of chromium from the waste stream. In this regard, natural adsorbents are the most preferable and cost-effective methods. In this study, the efficiency of Odaracha adsorbent as a novel green technology in the removal of chromium from synthetic wastewater is analyzed. Batch adsorption experiments were conducted to evaluate the effect of contact time, pH, adsorbent dose, and initial concentration of adsorbate on Cr removal. The surface morphology of Odaracha adsorbent was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray powder diffraction. Experimental results showed that Odaracha adsorbent could perform effectively in a wide range of experimental conditions. However, in optimum experimental conditions, such as 180-min contact time, pH 3, and 15 g/L of adsorbent dose Odaracha adsorbent removes 94.68% of Cr from an aqueous solution having 110 mg/L of Cr concentration.