Removal of arsenic from contaminated water using radiation-induced grafted chitosan: a critical review

ABSTRACT

Increasing exposure to Arsenic pollution is one of the biggest concerns regarding public health, water quality and ecosystem conservation. Arsenic pollution, in particular, has recently attracted attention, due to the contamination of drinking water. In recent years, Chitosan-based adsorbents have been used in the treatment of contaminated water. However, there are some disadvantages that resist the practical applications of chitosan, such as low solubility in acidic media, mechanical strength, selectivity and adsorption capacity. Thus functional modifications on chitosan are carried out to improve its properties. This review provides information on As contamination in complex environmental settings. It mainly describes the applications of the radiation-induced grafted biopolymer in the removal of arsenic from contaminated water. It also highlights the adsorbent’s regeneration, disposal methods and its cost evaluation.

KEYWORDS:

• Arsenic in the environment
• remediation
• adsorption
• grafting
• chitosan

Acknowledgments

The authors would like to acknowledge Govt. V.Y.T.PG Autonomous College for providing the opportunity to work there. The authors would like to express sincere thanks to the Radiation Technology Development Division, BARC, Mumbai, India, for providing the knowledge about radiation grafted polymers.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

K. Vijayasri

K. Vijayasri, Asst. Professor, Bhilai Mahila Mahavidyalaya, Bhilai, Chhattishgargh, India.

Alka Tiwari

Dr. Alka Tiwari, Professor, Govt. V.Y.T. PG Autonomous College, Durg, Chhattishgarh, India.