RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재

        Cadmium removal from aqueous solutions by pumice and nano-pumice

        Sara Haddadi Khorzughy,Teymur Eslamkish,Faramarz Doulati Ardejani,Mohammad Reza Heydartaemeh 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.1

        Use of low-cost minerals to eliminate mining and industrial pollutants is the main goal of this study. Weinvestigated the ability of pumice and nano-pumice to remove cadmium from a synthetic aqueous solution. Batchexperiments were performed to investigate adsorption characteristic; therefore, the effective factors influencing theadsorption process including solution pH, contact time and initial concentration have been considered. Equilibriumdata were attempted by Langmuir and Freundlich isotherm models to realize the interaction between adsorbent andadsorbate. The results show that cadmium adsorption on Pumice follows the Langmuir isotherm model with a R2of0.9996 and shows a homogeneous and mono-layer adsorption. Whereas, cadmium adsorption on nano-Pumice fol-lows a Freundlich model (R2=0.9939) and exhibits a multi-layer adsorption. The maximum mono-layer capacity (qmax)of cadmium for pumice and nano-pumice was calculated 26 and 200mg/g, respectively. Two different kinetics modelsincluding pseudo first-order and pseudo second-order were studied to evaluate the rate and mechanism of cadmiumadsorption by pumice and nano-pumice. The kinetics data indicate that a pseudo second-order model provides thebest correlation of the experimental data.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼