부산대학교 도서관

Acid mine drainage (AMD), is the largest environmental problem facing the mining industry today which is caused by the biological oxidation of sulfidic materials, frequently contains arsenic in the form of arsenite: As(III), and/or arsenate: As(V). The current study is conducted toward the removal of arsenic from synthetic AMD by raising the pH of the solution and utilizing bioactive compounds in fruits waste/ byproducts from food industry process by adsorbing arsenic to recover the contaminant. Arsenite is likely to be quickly converted to arsenate, the more thermodynamically stable form. The current study was designed for utilization of sour lemon peel (SLP) and Grape pomace (GP) as less expensive and much frequently available food byproducts due to prospective Arsenic bio-sorption capacity. For cleaning up Contaminated mining sites soil and the in order to ascertain its adsorbing potential and probable bio-adsorption capability of this fruit wastes, in August and September 2022 composite soil samples were collected within the Anguran (Zanjan Province), mines and simulated the conditions of soils in the contaminated sulfidic lands As( NO3)3 was added . The soils were mixed thoroughly and all samples stored at a greenhouse in Tehran County. Arsenic contents in all samples were analyzed by inductively coupled plasma optical emission spectrometry (ICP-OES). Results revealed that all As oxidation forms in treated soil were lower content significantly (p<0.03) than untreated soil samples after a few days and removal of As(V) has done more than other form of As(III), (p<0.01). The removing process of Arsenic from soil reached more than 99% in 20 days in pH of soil 3.6 and in presence of 5% SLP& 2% GP. Current study provides an optimistic alternative remediation of arsenic contaminated soils emphases on low cost and environmental treatment. [ABSTRACT FROM AUTHOR]