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کارایی کربن فعال پودری در حذف نیتروژن آمونیاکی از محلول های آبی. فرایند بهینه سازی با RSM، مطالعه سینتیک و ایزوترم جذب

گودینی, حاتم and درگاهی, عبداله and تابنده, لیلا and محمدی, میترا and وزیری, یاسر and حسینی آهق, میر محمد and شرفی, کیومرث and جلیلیان, زهرا (1396) کارایی کربن فعال پودری در حذف نیتروژن آمونیاکی از محلول های آبی. فرایند بهینه سازی با RSM، مطالعه سینتیک و ایزوترم جذب. Journal of Advances in Environmental Health Research ــ 5 (3). pp. 172-182. شاپا 2345-3990

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Title

The efficiency of modified powdered activated carbon for removal of ammonia nitrogen from aqueous solution: a process optimization using RSM (Response Surface Methodology), adsorption isotherm and kinetic study

English Abstract

The objective of this study was to determine the performance of modified commercial powdered activated carbon (MCPAC) in removal of ammonia from aqueous solution. The effects of adsorbent dosage (0.5–1.5 g/L), ammonia concentration (100–200 mg/L), pH (3 to 9) and contact time (2 to 120 min) were examined. In this study, experiments were performed based on Response Surface Methodology (RSM). The adsorption isotherm was evaluated using Freundlich and Langmuir models. Kinetics study was analyzed using pseudo first order, pseudo second order and particle penetration kinetic models. By increasing adsorbent dosage, pH and contact time, the removal efficiency increased. According to CCD results, the MCPAC was fitted to a quadratic equation. Also, ammonia adsorption for MCPAC followed the Langmuir (R2 = 0.9831) isotherm model. The maximum adsorption capacity for MCPAC was 40.323 mg/g. The analysis of adsorption kinetic for MCPAC indicated that ammonia adsorption was well fitted by the pseudo second order kinetic model. As thus, we concluded that MCPAC could be considered as an appropriate and economical alternative adsorbent for water and wastewater treatment due to its high ammonia adsorption capacity.

Item Type:Article
زبان سند : انگلیسی
نویسنده اول :حاتم گودینی
نویسنده :عبداله درگاهی
نویسنده :میر محمد حسینی آهق
نویسنده مسئول :زهرا جلیلیان
Additional Information:Indexed in:Chemical Abstracts Service (CAS), ISC, Google Scholar, Indian Science and Research, Research Bible, Journal Index, Barakatkns, Directory of Open Access Journals
کلیدواژه ها (انگلیسی):modified activated carbon; ammonia; RSM; aqueous solution; adsorption isotherm
Subjects:WA Public Health > WA 30 Social, Economic, and Environmental factor in public health
WA Public Health > WA 30 Social, Economic, and Environmental factor in public health

WA Public Health
WA Public Health
Divisions:Faculty of Health > Department of Environmental health
ID Code:9732
Deposited By: دکتر عبداله درگاهی
Deposited On:03 Dec 1396 08:52
Last Modified:03 Dec 1396 08:52

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