Abstract

Hexavalent chromium is carcinogenic and should be removed from industrial wastewater before discharged into water resources. Adsorption by using activated carbon from biomass is an economic and conventional way on removing the heavy metal ions from wastewater. In this research, activated carbon is synthesized from Jatropha curcas L. seed hull through chemical activation with ZnCl2 and carbonized at 800 °C (JAC/ZnCl2). The activated carbon has been characterized using FTIR, SEM-EDX, BET and CHNS-O analyzer. Adsorption isotherms have been analysed using Langmuir and Freundlich models to determine its removal mechanism. The maximum adsorption capacity of Cr (VI) metal ions onto JAC/ZnCl2 activated carbon is 25.189 mg/g and following Langmuir isotherm model which is monolayer adsorption.

Highlights

  • Chromium exists in almost anywhere on earth, including seawater and plants, but its hexavalent state (+6) has been proven to be the most poisonous and carcinogenic to both human and animal [1]

  • Because of its high corrosion-resistant and hardness, chromium has been used in many metal industries, ranging from printing machine to aerospace manufacturing

  • Many researchers have tried other materials to replace this element in the industry but none of the materials can surpass the excellent layer quality and cost-effectiveness it holds [2]

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Summary

Introduction

Chromium exists in almost anywhere on earth, including seawater and plants, but its hexavalent state (+6) has been proven to be the most poisonous and carcinogenic to both human and animal [1]. Series: Materials Science and Engineerin1g23249536(72809107) 012013 doi:10.1088/1757-899X/293/1/012013 Adsorption Isotherm of Chromium (Vi) into Zncl2 Impregnated Activated Carbon Derived by Jatropha Curcas Seed Hull

Results
Conclusion

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