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

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재

        A new approach to modification of an agro-based raw material for Pb(II) adsorption

        Muhammad Salman,Makshoof Athar,Umar Farooq,Sadaf Rauf,Umy Habiba 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.3

        This paper describes a relatively new and effective modification with thiourea of an agro-based raw material,sorghum biomass for adsorption of Pb(II) ions. The modification was done under microwave irradiation. Changes incharacteristics of modified material were determined by FT-IR and CHNS analysis. Effect of adsorbent dosage, contacttime, solution pH and temperature on equilibrium process was extensively studied. Famous equilibrium models (Langmuir,Freundlich, Temkin, Dubinin-Radushkevich) in non-linear fashion were applied to evaluate the equilibrium data usingdifferent initial concentrations of Pb(II) ranging from 20 mg/L to 300mg/L. The adsorption process followed the pseudosecond-order kinetics. This paper also discusses the thermodynamic parameters (free energy, enthalpy and entropy)and reveals that the adsorption process is spontaneous. An appreciable increase in adsorption capacity of the modifiedadsorbent was observed, depicting the advantages of thiourea modification of sorghum biomass under microwave irradiation.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼