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nThis study was conducted in 19 blocks and 4 surface water of Gorakhpur district to assess the arsenic content. The study was carried out in the month of February-March, 2021. The result was compared with IS: 10500:2012 and WHO. The increased arsenic content in the water possess serious health issues in humans. The acute health issues being pigmentation on skin and damage to red blood cells. Prolonged exposure leads to liver and kidney cancer. This main focus of this paper is to review the arsenic content and water quality along with the reasons of arsenic contamination in these blocks. It also suggests the prevention methods that are taken and could be taken and also discuss the areas and the gaps that requires further attention in arsenic contamination control in Gorakhpur district. The test was carried out using Spectrophotometer method i.e. Silver Diethyldithiocarbamate (SDDC) method which is a laboratory instrument. This instrument has arsenic detection range from 0.001 to 0.020 ppm. In this method the inorganic arsenic was reduced to arsine by zinc in acid solution in an arsine generator. From this assessment it was found that Gorakhpur district is contaminated by arsenic. Measure step are required to remove this pollution.n

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1. Gawchha Sushil, Acharya Bishwanath, Dhaka Agni, et al. Assessment of Arsenic content in deep ground water of Kathmandu Valley. NJST. 2020; 19(1): 66-77.
2. BIS. IS:10500:2012. Indian standard specifications for drinking water. New Delhi: BIS, 2012.
3. Chakraborty Dipankar, Das Bhaskar, Mahmudur Rahman Mohammad, et al. Status of groundwater arsenic contamination in the status of West Bengal, India; A 20 year study report. Mol. Nutr. Food Res. 2009; 53(5): 542-551.
4. Kumar Sanjay, Pandey Govind, Sharma Ankit. Assessment of Arsenic in Groundwater in Gorakhpur District, Uttar Pradesh, India. International Journal of Engineering Research & Technology. 2014; 3(12): 766-770.
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6. Islam M.M Nazrul (2006). GIS based spatial analysis of arsenic-contamination groundwater[online]. Available from https://faculty.kfupm.edu.sa/crp/bramadan/ crp514/Termpapers/Term061/2%20-%20Term061%20-%20Report%20-%20Nazrul.pdf.
7. Chatterjee Amit, Das Dipankar, Chowdhury T.R., et al. Arsenic in groundwater in six districts of West Bengal, India: the biggest arsenic calamity in the world: Part I. Arsenic species in drinking water and urine of the affected people. Analyst. 1995; 120(3): 643-650.
8. Liang Meisheng, Lai Yongkai. 2010 4th International Conference on Bioinformatics and Biomedical Engineering: Determination of the Arsenic Content in Surface Water by Silver Diethyldithiocarbamate Spectrphotometer; 2010 June 18-20; Chengdu, China: IEEE; 2010.
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nMathematical model was developed to monitor, predict, and stimulate hot and cold water system using split range control application. Computer program language of MATLAB software of ODE function was applied to monitor the trend of temperature parameter in the system. Result obtained revealed decrease in temperature value of the hot water and increase in the temperature value of cold water until equilibrium was attained at 132°F at > 1.0 h. A constant in the degree of temperature of the cold water was obtained at 135°F as well as for hot water is 53°F. The research work demonstrates the application of split range control in monitoring, predicting and simulating the hot to cold water system.n

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nThe textile industry is very water intensive. Water is used for cleaning the raw material and for many flushing steps during the entire production process. During the process a large quantity of wastewater is produced which consists of dyes, heavy metals, pigments, and surfactants in high concentration levels all around the world. Dyes and other chemical laden wastewater released by textile industries is a major concern for the treatment which causes an important threat to serious environmental and public health problems before discharge. Membrane technology plays a key role in effective separation of textile industry wastewater (TIWW) in terms of “state of the art technologies”. Nanofiltration is one of the most effective separation processes for the removal of pollutants from TIWW. The present study mainly focused on the following issues such as characteristics of wastewater, minimization, treatment, recycle/reuse and final disposal of wastewater. The paper deals with the description of the treatment of TIWW using the Hydrophilized polyamide-based Nanofiltration membrane (HPA-100-NF). The experiments were conducted to a significant reduction in parameters such as COD, TDS, Turbidity, and color. From the results, the % of water recovery was found to be 70-80% successful. The complete removal of color and turbidity was observed which states the overall process was technically feasible and cost-effective and beneficial for the environment. The treated water can be reused for various purposes such as gardening, landscaping, groundwater recharge, irrigation, floor cleaning, and cooling towers in industries to protect the environment as well as save freshwater for the future generation.n

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1. Jegatheesan V, Pramanik BK, Chen J, et.al. Treatment of textile wastewater with membrane bioreactor: A critical review. Bioresource Technology. 2016; 204: 202-212.
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17. Qing C, Ying Y, Mengsi Z, et.al. Comparative study on the treatment of raw and biologically treated textile effluents through submerged nanofiltration. Journal of Hazardous Materials. 2015; 284: 121–129.

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