Due to the more and more stringent environmental regulations, the industrially generated residues and wastes consisting oxidized iron has become a serious problem to be dealt with. Researches to develop an effective, environmental friendly and economical process for solving this problem are enormously growing. Among these studies, galvanic stripping has eventually emerged as a promising, relatively inexpensive and highly efficient technique on the issue of iron removal.; The use of solid reductant, such as zinc or zinc-lead alloy, in organic reagent, D2EHPA in this study, to reduce iron in the organic to the ferrous state, which is loosely bonded to D2EHPA thus makes stripping no longer a problem, is the innovative part of this process. However, a variety of operation parameters, such as water content, oxygen concentration, reductant and its surface area, reductant surface modification, temperature, diluent, organic concentration, stripping solution, A/O ratio, separate and simultaneous stripping, can considerably affect the reaction rate and efficiency.; The primary objective of this study is investigating all these variables and therefore establishing a better and more complete optimization of the process control. Control mechanisms of the reaction and speculations to interpret various effects from different parameters are built possibly to have an in-depth understanding of the whole procedure. However, further research are continuously under study to confirm these speculations and more efforts are put in to establish this technique as an industrialized-ready process.
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