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J Korean Soc Environ Eng > Volume 38(10); 2016 > Article
J Korean Soc Environ Eng 2016;38(10): 543-550. doi: https://doi.org/10.4491/KSEE.2016.38.10.543
아민형 PP-g-VBC의 NO3-N과 PO4-P 흡착특성
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목포대학교 환경공학과
Nitrate and Phosphate Adsorption Properties by Aminated Vinylbenzyl Chloride Grafted Polypropylene Fiber
Yong-Jae Lee, Jee-June Song, Choon-Ki Na
Dept. of Environmental Engineering, Mokpo National University
Corresponding author  Choon-Ki Na ,Tel: 061-450-2483, Fax: 061-450-2489, Email: nack@mokpo.ac.kr
Received: August 22, 2016;  Revised: October 6, 2016;  Accepted: October 10, 2016.  Published online: October 31, 2016.
ABSTRACT
Amine-type PP-g-VBC-EDA adsorbent, which possesses anionic exchangeable function, was prepared through photo-induced graft polymerization of vinylbenzyl chloride (VBC) onto polypropylene non-woven fabric and subsequent amination reaction using ethylenediamine (EDA). Adsorption characteristics of anionic nutrients on the PP-g-VBC-EDA adsorbent have been studied by batch adsorption experiments. The equilibrium data well fitted the Langmuir isotherm model, and the maximum monolayer sorption capacity was found to be 59.9 mg/g for NO3-N and 111.4 mg/g for PO4-P. The adsorption energies were higher than 8 kJ/mol indicating anion-exchange process as the primary adsorption mechanism. The pseudo-second order kinetic model described well the kinetic data and resulted in the activation energy of 9.8-36.7 kJ/mol suggesting that the overall rates of NO3-N and PO4-P adsorption are controlled by the chemical process. Thermodynamic parameters such as ΔGo, ΔHo and ΔSo indicated that the adsorption nature of PP-g-VBC-EDA for anionic nutrients is spontaneous and exothermic. The PP-g-VBC-EDA could be regenerated by washing with 0.1 N HCl.
Key Words: Anionic Nutrients, Adsorption, Vinylbenzyl Chloride, Graft Polymerization, Amination
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