A Green Approach for Extraction of Ammonium Molybdate from Molybdenite Using Indigenous Resources
Muhammad Pervaiz 1, 2  
,   Asima Munawar 1,   Shabbir Hussain 3,   Zohaib Saeed 1,   Shahid Hussain 2,   Umer Younas 2,   Faisal Ali 2,   Asima Zaidi 4,   Syed Majid Bukhari 4,   Munawar Iqbal 2
,   Ayoub Rashid 4,   Ahmad Adnan 4,   Arif Nazir 2  
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Department of Chemistry, Government College University, Lahore, Pakistan
Department of Chemistry, The University of Lahore, Lahore, Pakistan
Department of Chemistry, Lahore Garrison University Lahore, Pakistan
Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Pakistan
Arif Nazir   

Department of Chemistry, The University of Lahore, Lahore, Lahore, Pakistan
Submission date: 2020-05-13
Final revision date: 2020-06-11
Acceptance date: 2020-06-17
Online publication date: 2020-12-03
Publication date: 2021-02-05
Pol. J. Environ. Stud. 2021;30(2):1771–1775
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 SO2. 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.