ARSENIC PROBLEM AND MITIGATION BY (Dr. Ashok Kumar Jha , Ujjwal Kumar)
“The present book on Arsenic has painted a small portion of the vast canvas of water pollution by focusing on the specified areas of the Gangetic plain. In India, the firstcase of arsenic contamination came to light in 1980 in West Bengal. Subsequently many chemists and biologists started examining arsenic content in water in various parts of Bihar and my team started work in some new areas of Gangetic plain in Bhagalpur district. Switching to groundwater for potable water resulted in decrease of bacterial contamination on one hand and on the other this resulted in the vast population being affected by arsenic contaminated water. This book deals with some safer techniques of arsenic removal. The arsenic removal technologies are based on solar oxidation, coagulation, sedimentation, filtration, adsorption, ion exchange and biological processes. In coagulation micro-filtration Fe(III) and Al(III) salts are added to form arsenic-sorbing flocs which is removed by membrane filtration. This method increases Fe(III) and Al(III) in water. Adsorbents like activated alumina, ferric hydroxides, iron oxide coated sand and activated carbon have been used in columns to remove arsenic from aqueous medium.
Thus many methods of arsenic removal have been discussed. The search for low-cost technologies has directed towards bentonite deposits of Rajmahal hills. Bentonite minerals are smectite group of mineral having 2:1 dioctahedral structure. Though these minerals are abundant
inmost of the countries of the world, Rajmahal hill bentonites have not been studied for many of its important properties as yet. Our research team have collected bentonite minerals from different parts of the hill and worked on removal of heavy metals, dyes and arsenic from aqueous medium. Efforts have been made to use different derivatives of bentonite minerals for remediation of heavy metals including arsenic. A comparative study of remediation potential has been done. All the useful experimental data have been incorporated in the book to have a clear understanding of the subject. Apart from this, the ability of agricultural solid wastes e.g maize stem powder, rice husk have also been tested for removal of arsenic inaqueous medium. In addition, researches have focused on the ability of biological materials to accumulate the toxicants. The major advantages of biosorption are low-cost, high efficiency and minimum use of chemicals.
Latest techniques of analyses of arsenic both qualitative and quantitative have been discussed in the book. Analysis of arsenic has also been done by I.C.P and A.A.S. Possible causes of arsenic contamination in ground water, geochemistry and mechanism of entry in the Gangetic plain have also been discussed to make readers understand in the simplest manner. General chemistry of arsenic and its compounds have been discussed in chapter 1 and arsenic binding to DNA causing cancer with possible mechanisms have been incorporated in to the book after a careful and thorough review of journals. Arsenicosis problems, photographs of affected regions and hills have been added with a view to have a glimpse of the worsening situation at the ground level.
I hope this book will be valuable for teachers, students and
researchers pursuing advanced research on arsenic mitigation.
The suggestions from any corner are most welcome and
would be incorporated in the book for further improvement.”
- Publisher : Booksclinic Publishing
- Language : English
- Paperback : 142 pages
- ISBN-13 : 9789390655472
- Reading age : 3 years and up
- Country of Origin : India
- Generic Name : Book
100 in stock (can be backordered)
“Dr. Ashok Kumar Jha is working as an Associate Professor in University Department of Chemistry, T.M. Bhagalpur University, Bhagalpur, Bihar. Dr. Jha has a brilliant academic carrier. He always stood first in merit and has been awarded National merit scholarship throughout. He has organized fourteen National and one International seminar sponsored by U.G.C New Delhi, C.S.I.R New Delhi, B.C.S.T Bihar,
NABARD and other agencies. He has delivered many invited talks in India and abroad. Dr. Jha has a teaching and research experience of 35 years. His interest is reflected through his papers in different National and International journals. He has seven books to his credit. He has completed two research projects sponsored by UGC and has been working on the problem of arsenic and heavy metal contamination and their removal. He has 40 original research articles in different National and International journals related to kinetics, co-ordination and adsorption of arsenic and heavy metals. Dr. Jha is the member of several academic societies and member of editorial team of many journals. He is currently the Vice-President of Indian Chemical Society,Kolkata. He publishes a biannual journal “Jalchintan”.
Mr. Ujjwal Kumar has submitted his thesis entitled “Studies on removal of arsenic, chromium and organic dyes from aqueous medium by using biomass and herbal plants” from P.G. Department of Biotechnology, T.M. Bhagalpur University, Bhagalpur leading to the award of Ph.D degree after a continuous research work of five years in the laboratory. He
has passed his B.Sc. (Hons.) in Biotechnology with first class from Marwari College, Bhagalpur. He has achieved M.Sc. in Biotechnology with first class from T. M. Bhagalpur University, Bhagalpur. Currently Mr. Kumar is working on Phytoremediation and Bioremediation for metallic decontamination of water resources in Bihar. Mr. Kumar has explored and marked many villages as arsenic and chromium contamination affected areas. He has also worked in DST research project as project fellow in Bihar Agricultural University, Sabour Bhagalpur. He has presented and attended more then 20 National and International conferences. Mr. Kumar has 9 original research articles in reputed International journals and 10 book chapters in different ISBN books.”
|Dimensions||6 × 9 cm|
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