화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.70, 394-401, February, 2019
DOI10.1016/j.jiec.2018.11.002  Export Citation
Extraction of hexavalent chromium by environmentally benign green emulsion liquid membrane using tridodecyamine as an extractant
Anil Kumar, Avinash Thakur†, and Parmjit Singh Panesar1
  • Research Laboratory-III, Department of Chemical Engineering,, Sant Longowal Institute of Engineering and Technology, Longowal, 148 106, Punjab, India
  • 1Food Biotechnology Research Laboratory, Department of Food Engineering and Technology, Sant Longowal Institute of Engineering and Technology, Longowal, 148 106, Punjab, India
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In this present investigation, the potentiality of rice bran oil (RBO) and tridodecylamine (TDDA) to be incorporated as the key constituents in the formulation of new environmentally benign green emulsion liquid membrane (GELM) to extract hexavalent chromium (Cr(VI)) from aqueous feed phase was explored. The pertinent constituents of GELM were RBO (70%, v/v) and hexane (30%, v/v) as green and organic diluent, respectively; TDDA (0.75 (%, v/v) of diluent solution) as carrier; emulsifying agent (span 80: 1.75 (%v/v) of diluent solution); and NaOH as internal reagent. The investigation of optimum process conditions for various parameters has resulted in 0.45 pH of aqueous solution, 0.25 [M] internal phase concentration, 2:1 (v/v) treat ratio, 0.40 (v/v) phase ratio, 550 (rpm) agitation speed, 25 (min) extraction time, and 30 ±2 (°C) feed phase temperature. The highest achievable extraction efficiency (η, %) and dynamic stability (min) of GELM have been obtained as 97 ±2% and 150 ±2 min, respectively under these optimum process conditions. The present finding has revealed that RBO as a green diluent has huge capability to be further utilized for the extraction of Cr (VI) from various industrial effluent streams.
Keywords:Chromium (VI);Tridodecylamine;Span 80;Green emulsion liquid membrane
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