کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
222434 464275 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
South African sands as an alternative to zero valent iron for arsenic removal from an industrial effluent: Batch experiments
ترجمه فارسی عنوان
ماسه های آفریقای جنوبی به عنوان جایگزینی برای آهن صفر دلپذیر برای حذف آرسنیک از یک پساب صنعتی: آزمایش های دسته ای
کلمات کلیدی
حذف آرسنیک، جاذب طبیعی مبتنی بر آهن، آهن خالص، درمان فاضلاب صنعتی، اثر آنیون، جنبشی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• An iron-based adsorbent was used to remove arsenic from an industrial effluent.
• Kinetics studies revealed that arsenic adsorption fits pseudo-second order rate.
• Oxygen’s presence increases the arsenic removal of the reactant substrates.
• The presence of sulfates and nitrates increases the arsenic removal efficiency

This work aimed to verify the potentials of two sands as a valid alternative of zero valent iron (ZVI) for the removal of arsenic from an industrial effluent. Batch experiments were conducted using Umgeni sand (US), Berea Red Sand (BRS), two types of zero valent iron (GmbH ZVI, and Connelly-GPM ZVI) and a mixture of BRS and GmbH ZVI. The experiments were carried out to study the removal kinetics of arsenic under semi-aerobic and anaerobic conditions and in the presence of sulfate, nitrate and phosphate anions. The GMP ZVI showed the best performance in terms of arsenic removal (100% of removal after 7 h). BRS showed 61.75% of arsenic removal by itself and 86.32% of removal in combination with GmbH ZVI. The presence of oxygen increased the Arsenic removal efficiency for all substrates investigated. Sulfate and nitrate anions increased the removal efficiency while phosphate affected the arsenic removal efficiency.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 3, Issue 1, March 2015, Pages 488–498
نویسندگان
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