Browsing by Author "Mehta, D.J."
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Item Adaptation of the bitartrate method for the estimation of potassium in sea bittern(2011-11-24T05:33:52Z) Shukla, B.K.; Mehta, D.J.Several workers have attempted to work out the best conditions for the application of the bitartrate method for the estimation of potassium. the difficulties encountered in the bitartrate method are:(1) slowness of precipitation,(2) incomplete precipitation of potassium bitartrate especially in presence of magnesium ions,(3) limitations of accuracy due to the slight solubiliy of potassium bitartrate in water. MEURICE2, using sodium hydrogen tartrate as precipitant foound that it was necessary to leave the reactants together overnight.CLARKE and DAVIDSON1 found that a considerable excess of sodium hydrogen tartrate was necessary for complete precipitation of potassium salt, especially in presence of magnesium sulphate. too large an excess of sodium hydrogen 23*Item Ammonium chloride and light magnesium carbonate from magnesium chloride(csmcri bhavnagr, 1970) Udwadia, N.N.; Mehta, D.J.Item Bromine manufacture and its industrial uses(2011-12-15T10:00:21Z) Satyanaray ana, K.V.; Mehta, D.J.Item Calcium silicate moulded insulation(csmcri bhavnagar, 1968) Shah, H.V.; Mehta, D.J.Item A comparative study of cellulose acetate as the membrane material for the reverse osmossis peocess(csmcri bhavnagr, 1971) Chandorikar, M.V.; Raval, M.K.; Mehta, D.J.Item desalination by the reverse osmosis process employing cellulose acetate flat membrane(csmcri bhavnagar, 1969) Chsndorikar, M.V.; Kane, A.S.; Mehta, D.J.Item desalination by the reverse osmosis process employing cellulose acetate tubular membrane(1969) Chsndorikar, M.V.; Kane, A.S.; Mehta, D.J.; Kava, R.M.Item Hydrated calcium silicate from marine gypsum(2011-11-24T07:26:13Z) Pandya, V.P.; Shukla, B.K.; Mehta, D.J.Gypsum as a source of the preparation of hydrated calcium sllicate has not received any attention so far although it presents certain advantages over calcium chloride as the starting materials, particulariy in regard to its cost, handling, purification and storage. in india, marine gypsum is obtained as a byproduct in the solar-salt industry. a factory producing 100,000 tons of salt can recover about 5000 tons of gypsum.Item Manufacture of free-flowing table salt(2011-11-23T11:52:49Z) Mehta, D.J.; Shukla, B.K.Optimum conditions have been worked out for preparing freeflowing table salt marine salt. the process involves puriflcation of the salt with lime and soda ash and crystallization under controlled conditions so as to produce grains of size and shape conducive to the free-flowing quality. coating the salt with a drier and paraffin wax insures this property under varying climatic conditions. cost estimates indicate that a one-ton-per-day plant would give a 21.5 per cent return on investment.Item Manufacture of potassium schloride:project costs(Reprinted from salt research industry, 1965) Mehta, D.J.; Udwadiya, N.N.; Kava, R.M.Item N-K fertiliser from potassium schoenite(BC insight, 1969) Udwadia, N.N.; Oza, D.H.; Mehta, D.J.Item Precipitated calcium carbonate from ammonia distiller waste of soda ash industry(2011-11-30T06:40:13Z) Sukla, B.K.; Mehta, D.J.; Chandorikar, M.V.Item Precipitated light calcium carbonate, potassium chloride and magnesium sulphate from marine mixed salt(2011-12-15T11:07:47Z) Chandorikar, M.V.; Mehta, D.J.Item Preparation of calcium silicate moulded insulation(csmsri bhavanar, 1968) Shah, H.V.; Mehta, D.J.Item Preparation of cellulose acrtate for desalination by reverse osmosis(csmcri bhavnagar, 1966) Desai, N.V.; Mody, I.C.; Mehta, D.J.Item Production of light basic magnesium carbonate(2011-11-24T05:46:37Z) Kappanna, A.N.; Shukla, B.K.; Mehta, D.J.light basic magnesium carbonate has been produced from sea bitterns a process developed at the intitute, the process is economical, the cost of the product being at least 35'/lower than the current market price of Rs 1200 per ton.Item Pure megnesium chloride from marine bittern(1963) Mehta, Mukul J.; Shukla, B.K.; Mehta, D.J.Item Sodium chloride A.R. & B.P. from marine salt(2011-11-23T04:34:10Z) Mehta, D.J.; Shukla, B.K.; Vaidya, M.C.The major impurities in marine salt are magnosium sulphate,magnesium chloride and calcium sulphate.the manufacture of analar and british pharmacopoeia (R.P.) grade sodium chloride must involve the quantitative removal of all the impurities from salt. various methods have been described for the removal of calcium, magnesium and sulphate ions. in one method , calcium and magnesium are removed by treatment with disodium hydrogen phosphate and sodium carbonate, followed by the elimination of sulphate ions by barium chloride.in another method barium chloride is used to precipitate sulphate ions: hydrogen peroxide is employed to oxidise iron, and sodium carbonate, to remove alkaline earth metals. the ph is then adjusted to 6.5 to ramove aluminium, magnesium and silicon compounds, followed by fractional crystallisation to obtain pure sodium chloride pure sodium chloride is olso obtained by the treatment of saturated salt solution with chlorine, followed by two successive precipitations by hydrochloric acid, and fusion of air dried product.Item Some observations on the sambhar lake brine & bitterns(2011-11-30T07:00:41Z) Prasad, MATA.; Mehta, D.J.Item study of porosity of siliclous earth(csmcri bhavnagar, 1980) someni, R.S.; Oza, P.M.; Pandya, V.P.; Mehta, D.J.