A Green Approach for Extraction of Ammonium Molybdate from Molybdenite Using Indigenous Resources

Abstract

Present work reports on the microwave assisted extraction of molybdenum in the form of ammonium molybdate from molybdenum concentrate. In this processing, the ore was heated in air at 750ºC. The process converted the molybdenum sulphides to its oxides and evolved SO 2. Molybdenum oxides were then converted into sodium molybdate which was further changed into calcium molybdate and finally ammonium molybdate using different processes. Hence, the process proved to be efficient and economical for the extraction of high quantity of molybdenum as ammonium molybdate from molybdenum ore. The spectroscopic analysis data revealed that the molybdenite contains 31.2% molybdenum from which 26 % have been extracted in the form of ammonium molybdate. The project is also very valuable because the extraction process is very simple and cost effective as compared to the previously reported processes.

Physicochemical Traits, Variation in Oil Contents and Comparative Analysis of Selected Varieties of <i>Olea Europaea</i> Cultivated under Specific Agro-Ecological Conditions

“…All of the solvents/reagents used were of analyticalgrade mostly products of Merck-Darmstadt, Germany. Cultivars named BARI 1 Zaitoon, BARI 2 Zaitoon, Koroneiki, Pendollino, and Arbequina were encoded as A, B, C, D and E respectively. Samples were cleaned and weighed.…”

“…They produce more energy as compared to protein and carbohydrates in animal metabolism. Fatty acids, which are the main component of lipids, oils, fats and esterified waxes, can be categorized on the basis of the length of carbon their chains [1][2][3][4][5]. Those having carbon chains from C1:0 to C10:0 are categorized as short-chain fatty acids (SCFAs).…”

COVID-19 Lockdowns in Industrial Areas and Outdoor Climatology Indices

“…In any case, the lockdown measures in the midst of the plague escort ecological reclamation all the while, and the noteworthy natural medical advantages may decrease the sickness trouble in the future we assume. Ambient air contamination has natural origin points and anthropogenic activities [8][9][10][11]. Ambient air pollution is caused due to anthropogenic activities especially fuel combustion from motor vehicles, power generation, heating, and waste incineration/burning [11,12].…”