Abstract
Complex formation processes of sericin compounds with Ni2+, Cu2+, Zn2+, Co2+ salts were studied. The possibility of maximum extraction of sericin was determined when wastewater is purified by the proposed method, and the developed purification method is recommended for amino acid purification of wastewater. By using the coagulants Al2(SO4)3•18H2O and FeCl3•6H2O and flocculant PAA together with the proposed sorbent, the concentration of coagulants in wastewater is 0.75 mg/l, 0.5 mg/l, 0.5 mg/l, and the amount of kaolin bentonite, respectively. An acceptable content of 2.0 g/l has been suggested. When the composition of the dry residue obtained after treatment with a composition consisting of bentonite, kaolin and aluminum sulfate was analyzed using X-ray structural analysis, it was found that the residue contained crystal spheres. The obtained results proved that the diffract grams of dry residue and bentonite samples are almost identical. It was found out in the research that these crystal spheres belong to the mineral contained in bentonite.
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