http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Ke-Sen Qian (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
Lu He,Hong-Bo Xu,Bing-Bing Wang,Dan-Dan Liu,Ke-Sen Qian 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.2
Poly(ethyleneimine)-functionalized organic-inorganic hybrid silica adsorbent was synthesized by hydrothermal-assisted surface grafting technique for the removal of Ni(II) ions from aqueous solution, and was characterizedby FT-IR, nitrogen adsorption and the static adsorption-desorption experiment method. The results indicated thatthe maximum static adsorption capacity of Ni(II) on poly(ethyleneimine)-functionalized hybrid silica adsorbent byhydrothermal heating method was 1.6 times as much as the conventional heating method. The poly(ethyleneimine)-functionalized hybrid silica adsorbent offered a fast kinetics for the adsorption of Ni(II), had a substantial binding capacityin the range of pH 4-8 and could be used repeatedly. The Langmuir adsorption model was more favorable thanthe Freundlich and Dubinin-Radushkevich adsorption models. The adsorption followed a pseudo-second-order modelcompared with pseudo-first-order model. Various thermodynamic parameters such as ΔGo, ΔHo and ΔSo indicated thatthe adsorption process was spontaneous and endothermic. The results showed that poly(ethyleneimine)-functionalizedhybrid silica adsorbent could be employed as an effective material for the removal of Ni(II) ions from aqueous solution.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
