Browsing by Author "Malabika Biswas Roy"

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Assessment of Arsenic Removal Units in Arsenic-Prone Rural Area in Uttar Pradesh, India
(Springer, 2019) Abhishek Kumar; Malabika Biswas Roy; Pankaj Kumar Roy; John Mike Wallace
To mitigate arsenic contamination in Uttar Pradesh, India, the state government installed 365 arsenic removal units (ARUs) in arsenic-prone areas of the Ballia District for last 10 years. Each unit was capable of serving approximately 200–300 households. The local communities were to assume responsibility for the day-to-day operation and maintenance of the filters. A field survey was conducted to determine the outcome of the state government project based on a sample of 200 ARUs, very few of which are still functioning. It is shown that the project failed because the siting of the ARUs was less than optimal, many families living in villages with ARUs were denied access to or chose not to use the filtered water for socioeconomic reasons, and the ARUs were not properly maintained. Factors that contributed to the demise of the filters were the unavailability of filtration media and spare parts in local markets and a lack of participation of families in the communities responsible for maintaining the ARUs. The overall results conclude for operation and maintenance a constant monitoring is essential to sustain all installed ARUs at different locations. Also there is a training need assessment for the beneficiary group who run the individual unit through people’s participatory approach with optimum management related to hazardous sludge. © 2019, The Institution of Engineers (India).
Participation and dependency of forest dwellers in forest management - A comparative study of Bankadaha and Neora Valley forest
(Scientific Publishers, 2016) Debanjana Chatterjee; Abhishek Kumar; Malabika Biswas Roy; Pankaj Kumar Roy
Forest is an important natural resource not only in respect of its' economic facilities but also biological, hydrological services of environment. Forest plays an important role in daily livelihood of forest villagers. They depend on the forest in various ways for their earnings, fuel, fodder, medicine. They work as forest protector or as eco developer in Joint Forest Management (JMF) programme under Forest Department. In this study the dependency of forest villagers on forest and their role in forest management is studied through socio-economic survey in respect of 2 different forests of West Bengal-Bankadaha forest of Bankura and Neora Forest of Darjeeling district. These 2 forests represent different biological and climatological scenario. But both of the forests are protected and managed through Forest Protection Committee (FPC) or Eco Development Community (EDC). The comparative study shows that Neora Valley forest is more resourceful than Bankadaha but the later is proved to be more beneficial to forest villagers than the earlier.
Study of conservation and wise use of two important indian wetlands using contingent valuation technique
(Thai Society of Higher Eduation Institutes on Environment, 2019) Malabika Biswas Roy; Sujit Pal; Mihir Pal; Pankaj Kumar Roy; Abhishek Kumar
Wetland administration, as the connected side of wetland science, requires a comprehension of the logical parts of wetlands adjusted with legitimate, institutional, social and monetary substances. This paper endeavours to evaluate how the group instruction can oversee and save the wetlands and furthermore to gauge the estimation of two wetlands situated at various states utilizing Contingent Valuation Technique (CVT). A model is being developed to describe the relationship between the wage of family and its Willingness to Pay (WTP) with the help of some indicators related to conservation and wise use of two wetlands. A total of 600 samples families have been considered for two wetlands. Seven attributes are being considered as dependent parameters for WTP. The results shows that WTP of rural households were found to be INR 10,000 and INR 18,000 for Gajna and Rudrasagar, whereas almost 47% lesser value was found for Gajna wetland with respect to Rudrasagar of urban households for better conservation and wise use of two important wetlands using CVT. The outcomes delineate WTP is more noteworthy and great relationship got with the assistance of factual system with training other than condition and separation for both the wetlands. At last, this paper finishes up the relapse investigation utilizing measurable programming demonstrates the salary to be the most essential capacity which decides WTP of the partners may enhance the financial upliftment through protection and shrewd utilization of wetlands. © 2019, Thai Society of Higher Eduation Institutes on Environment. All Rights Reserved.
Study of extent and magnitude of arsenic in groundwater in Uttar Pradesh, India
(Thai Society of Higher Eduation Institutes on Environment, 2017) Abhishek Kumar; Malabika Biswas Roy; Pankaj Kumar Roy; K.N.P. Raju
Arsenic occurs in three common allotrops namely metallic grey, yellow and black. Arsenic founds in shallow aquifer of Ganga and Brahmaputra River Basin. Arsenic contamination in groundwater in the Ganga-Brahmaputra basin in India is reported as arsenic contaminated zone. There are seven highly contaminated states namely-West Bengal, Jharkhand, Bihar, Uttar Pradesh (UP), Assam, Manipur and Chhattisgarh in India. Three districts namely Ballia, Gazhipur and Varanasi in UP are contaminated with very high amount of arsenic. In Ballia district 5 out of 17 blocks are highly contaminated and people are suffering by skin disease related to arsenic. The results depicted that extent amount of arsenic is found in eastern part of Ballia District. The objective of this paper is to study the extent and magnitude of arsenic in groundwater for almost all shallow, medium and deep aquifer of Murli Chhapra Block. Results showed 78% samples are contaminated with arsenic. The contamination rate is in decreasing order by going down(shallow>medium>deep aquifers). In the study area more than 80 percent people have their own hand pump ranged between 12mto 25m in shallow aquifer. © 2017, Thai Society of Higher Eduation Institutes on Environment. All rights reserved.