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Introduction to Nanosensors
Published in Vinod Kumar Khanna, Nanosensors, 2021
A chemical reaction is the interaction between one or more elements or compounds called reactants to form new elements or compounds termed products. A chemical equation is the symbolic representation of a chemical reaction; for example, potassium chlorate decomposes, on heating in the presence of manganese dioxide powder, into potassium chloride and oxygen. Manganese dioxide acts as a catalyst, a substance that increases the speed of a reaction without any changes in itself. Symbolically, 2KClO3=2KCl+3O2MnO2catalyst
Metals in the workplace
Published in Sue Reed, Dino Pisaniello, Geza Benke, Principles of Occupational Health & Hygiene, 2020
Manganese finds its major use in steel making, but it is also used in the production of aluminium alloys and cast iron, in alkaline manganese dry batteries, as manganese dioxide for brick colouring, as an oxidising agent in dyes and chemicals, as a chemical catalyst, as manganates and permanganates for disinfecting and bleaching and as a fungicide. Mining and smelting of manganese ore (pyrolusite) create the greatest exposure hazards. Subsequent environmental contamination around smelters can also occur. Other small exposures occur in welding with manganese-containing rods and in (dark) paint pigments. The organic manganese compound methylcyclopentadienyl manganese tricarbonyl (MMT) has been used as an additive to increase octane rating in petrol.
Chlorine Dioxide and the Small Drinking Water System
Published in Joseph A. Cotruvo, Gunther F. Craun, Nancy Hearne, Providing Safe Drinking Water in Small Systems, 2019
Manganese dioxide is insoluble in water and can be filtered out before it leaves the treatment system. To remove one part of manganese requires 2.45 parts of chlorine dioxide. Best results are obtained when the pH is greater than 7. Alkaline conditions are more favorable than acidic conditions.
Interaction of arsenic(III) and arsenic(V) on manganese dioxide: XPS and electrochemical investigations
Published in Journal of Environmental Science and Health, Part A, 2019
Nicy Ajith, Kaustava Bhattacharyya, Priyanka R. Ipte, Ashis K. Satpati, Arvind K. Tripathi, Rakesh Verma, Kallola K. Swain
Manganese dioxide was prepared by solid-state reaction of manganese acetate tetra hydrate and potassium permanganate.[20] Manganese dioxide was air dried, ground and stored in glass bottle for further use.