حذف يون هاي محلول كروم شش ظرفيتي با استفاده از خاكستر و كربن چوب صنوبر به عنوان جاذب

Carbon and Ash of Deal as Two Absorbents in the Removal of Cr(VI) Ions from Aqueous Solutions

Absorption of heavy metal ions from aqueous solutions by biomass wastes is a proper and low-cost method for heavy metals removal from industrial wastewater, since these materials are abundant in nature. The use of ash and carbon prepared from deal ability to absorb Cr (VI) ions from aqueous solutions are studied. The Cr(VI)-absorption experiments were carried out to analyze the influence of pll, initial Cr(VI) concentration and absorbent dosage, on the efficiency of Cr(VI) removal by the absorbents. Our results showed that the Cr(Vl) absorption mainly was dependent on both final pH of solution and initial Cr(VI) concentration.At optimum conditions, while initial Cr(VI) concentration and initial p1I were 10 (mg/L) and 2 respectively , by using of 2.5 (gaL.-) deal carbon efficiency of Cr(VI)-absorption is 37%. Also it was known that adsorption of Cr(VI) ions well matched the Langmuir isotherm.