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Expert, while employed at B.A.R.C., a world-renowned institute, made significant contributions in Chemistry. He has been consulting to various national and international organizations since 1994 in the field of solvent extraction for metal separations, analytical chemistry, solution chemistry to name a few.

Expert, while consulting as an expert with IAEA, Vienna, Austria, demonstrated his developed process for the separation of neodymium from the light rare earths to Vietnam Atomic Energy, Hanoi.

Expert has extensively worked in the highly specialized field of solvent extraction (SX), a technique for separation of metals. He has successfully processed complex materials to extract the desired metal quality by optimizing various parameters such as acidity and composition of the feed solution, acidity of the scrubbing and stripping solutions, number of extraction and scrubbing stages etc. Based on the thorough knowledge of basic principles of chemistry of various metals and their interactions with various types of extractants, he prepared perfect flow-charts which have been commercially implemented. The process flow-charts have been described in his publications.

Metal separation processes designed by Expert include separation of individual rare earths such as Ce, Pr, Nd, Sm, Eu, Dy, Y etc. from the rare earths concentrates obtained from monazite, a source of rare earths phosphate. He has developed processes for the separation of the metals like Cu, Co, Ni, Zn, Mn etc from the heterogenous and secondary sources. Expert has successfully increased the separation factors between the metals such as Mn, Ni, Co and Cu which resulted in smaller plant size. He has published this concept in “Hydrometallurgy." He has setup the plants for the separation of these metals for his clients. His processes are designed with ease of operation in mind.

Expert has innovated process for the separation of Nb from Ta. The purity of the metals achieved by his process is greater than that obtained by any other existing process. He has engineered a highly economical process for the extraction of silver entrapped in graphite without any expensive chemicals.

He has designed a cost effective SX process for the extraction of gold. This process involves the minimum number of operational stages without use of hazardous chemicals such as cyanide. This is a practically pollution free process and is ready to be implemented on an industrial scale.

Using DEHPA and PC 88A, Expert could extract radioactive Am(III). His findings have been published in “Hydrometallurgy."

Expert designs his processes with safety and economics in mind without compromising the purity and recovery of the product.

Expert once faced a challenging opportunity to create an energy saving process for the separation of Co from Ni. The client was initially using a solvent, DEHPA, which required heating to 60°C. Expert’s process involved the use of reusable PC 88A which eliminated the heating step. He has published this innovative process in “Hydrometallurgy”.

Expert’s processes involve steps to reduce pollution. Some of his processes such as gold extraction mentioned earlier are practically pollution free.

Expert has been able to troubleshoot problems. Issues such as improper flow-rates of the solvents, overflowing of extraction tanks, gel formation etc. can lead to operational nightmares and reduced quality. Once while troubleshooting at a client’s site, Expert noticed that the two phases (organic and aqueous) were not getting separated. Expert resolved this issue by appropriately modifying the organic and aqueous flow rates, without compromise.

Expert is well versed in the field of solution chemistry. His extensive study on different types of metal complex species formed with various coordinating agents gave him insight in to the structure of the metal complex. This structural behavior many a times leads to separation of metals from the solution.

Determination of Stability constants of metal complexes in solution is very important. The stability constant data can be exploited for the separation of metals. Stability constants determined by Expert for some of the metal complex reactions are published in scientific journals and mentioned in the standard volumes dedicated only to Stability Constants data.

Spectral analysis indicates the nature of the species of metal complexes. Expert in one of his publications has shown the existence of protonated complex (MHL) which was not detected by potentiometry as MHL species were not dissociated at certain pH. These species in solution could be detected only by spectrophotometry.

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Aryavart Chemicals (pvt.) Ltd. appointed Expert as a Consultant from 2000 to 2006 for developing the solvent extraction process for the separation of cobalt from the heterogeneous and secondary sources and for complete setting up the chemical plant for full production. Expert was entrusted to develop the analytical methods (chemical) for the analyses of raw material and the finished purity product.Shalina Laboratories appointed him in 1996 as a Consultant for the development of the process for the separation of cobalt, copper and zinc from the heterogeneous source.Modisom private Ltd. appointed Expert in 2006 as a Consultant for the development of a process for the separation of silver from the graphite crucibles.Indian Rare Earths Ltd., a Government Organization, appointed Expert as a Consultant from 1994 to 1996 for the development of solvent extraction processes for the separation of individual rare earths from rare earths concentrates.International Atomic Energy Agency, Vienna, appointed him in 1995 and 1996 as an Expert (UNDP) to Vietnam Atomic Energy, Hanoi for the separation of neodymium.