1 | Page Analytical study on the removal of arsenic species and its compound by applying magnetic field . Author – Arpit Kumar 1 * Abhijeet Kumar 1 * Akshat Adarsh 2 , Manju Kumari* 11 Science Trainer, Bihar Bal Bhawan Kilkari [Ms.c Environmental Science & Management] 1 Child Scientist, Science Section Bihar Bal Bhawan, Kilkari 1 Child Scientist, Science Section Bihar Bal Bhawan, Kilkari 2 Child Scientist, Science Section Bihar Bal Bhawan, Kilkari Address for Correspondence: C/O Director, Bihar Bal Bhawan Kilkari,[Established Under education Dept.Govt. of Bihar] Saidpur Patna, Bihar- 800004, India Abstract- Arsenic (As), one of most toxic contaminants found in water, is well known to have adverse effects, such as skin cancer, on human health. The consumption of arsenic contaminated water has led to human health crises in many countries such as Bangladesh, China, and even the western United States. The new Environmental Protection Agency(EPA) standard for arsenic in drinking water is 10 [μg/L, and many smaller drinking water treatment plants are in need of additional treatment to achieve this standard. Recently, many researchers have been trying to find cost-effective filtration for the many small-scale water systems or individual ground wells that are used in most arsenic endemic areas. The present analytical study discloses a very efficient, low-cost approach for the removal of arsenic species and compounds [III {Na2AsO3] and V {Na3AsO4} ] from drinking water. The Innovation consists of a Sequence of separation chambers which houses multiple conical structures in succession such that outer surface of each conical magnetic field structure has got permanent NdFeB magnets are used as the Conical Shapes in a special pattern (to enhance the magnetic field & ensure the separation of arsenic and deposition in a string structure(specialized) . When Arsenic contaminated drinking water is passed through the sequence of separation through the magnetic chamber the Arsenic particles get repelled and adhere to the surface of the space between conical structures and surrounding area. The concentration of Arsenic decreases by about 98-99% after water is passed through the device. The devices offers the advantage of being online separation device, thus enabling Arsenic removal during water flow through pipeline, without need for holding tank. No electricity is needed for its operation. In addition, there is zero wastage of water and no consumables are needed INTRODUCTION 1. Arsenic is a natural component of the earth’s crust and is widely distributed throughout the environment in the air, water and land. It is highly toxic in its inorganic form. Arsenic element exists as oxides in the soil, sediments and water in many parts of the world and originates from both natural and anthropogenic activities. There are four chemical oxidation states for Arsenic (−3, +3, 0, and +5) in Nature. 1 The most common Arsenic compounds that naturally occur are arsenite (H3AsO3 – As(III)) and arsenate (HAsO4 2− – As(V)). As(V) is the predominant species present under oxidizing conditions and exists as oxyanions of Arsenic acid (H3AsO4, H2AsO4 − , HAsO4 2− and AsO4 3− ), while As(III) exists as arsenious acid (H3AsO3, H2AsO3 − , HAsO3 2− ) under mildly reducing conditions.Arsenic compounds have been recognized as group 1 carcinogens by the International Agency for Research on Cancer (IARC). Arsenic can release into the aquatic environments by natural processes such as dissolution of minerals by weathering, microbial activity, and complexation with natural organic materials. On the other hand, anthropogenic activities, including industrial mining and metallurgical industries, combustion of fossil fuels, use of Arsenic pesticides, herbicides, and crop desiccants, can result in Arsenic contamination in soils and surface water  The geochemical cycles of Arsenic in Nature Arsenic enters into groundwater in the form of As (III) and As(V) through many ways such as industrial activities, weathering of rocks, volcanic emissions, biological activities and geochemical reactions. Arsenic exists in the natural pH range of groundwater primarily as an oxyanion of H3AsO3 that is neutral in charge. Owing to the deficiency of potable water sources, the Arsenic contaminated groundwater (including geothermal water) was used for developing or underdeveloped world without treatment, which led to many adverse health conditions in the local population. Harmful effects of Arsenic on Human Health - Inorganic Arsenic is a confirmed carcinogen and is the most significant chemical contaminant in drinking water globally. Arsenic can also occur in an organic form. Inorganic Arsenic compounds (such as those found in water) are highly toxic while organic Arsenic compounds (such as those found in seafood) are less harmful to health. International Journal of Scientific & Engineering Research Volume 11, Issue 4, April-2020 ISSN 2229-5518 825 IJSER © 2020 http://www.ijser.org IJSER