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| 아민형 PP-g-VBC의 NO3-N과 PO4-P 흡착특성 |
| 이용재, 송재준, 나춘기 |
| 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
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Received: August 22, 2016; Revised: October 6, 2016; Accepted: October 10, 2016. Published online: October 31, 2016. |
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| ABSTRACT |
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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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