| Removal of aqueous phenol compound by vacuum membrane distillation |
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| 作者姓名： | LIU Zuohu LIU Renlong DU Jun TAO Changyuan LI Xiaohong College of Chemistry & Chemical Engineering Chongqing University Chongqing P. R. China College of Resources & Environmental Science Chongqing University Chongqing P. R. Chin |
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| 作者单位： | LIU Zuohua 1，LIU Renlong 1，DU Jun 1，TAO Changyuan 1，LI Xiaohong 2 1College of Chemistry & Chemical Engineering，Chongqing University，Chongqing 400030，P. R. China 2College of Resources & Environmental Science，Chongqing University，Chongqing 400030，P. R. China |
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| 摘 要： | 1.IntroductionPhenolisanimportantchemicalindustrymaterial,butitalsoaboundswithserioushazardtoenvironmentandthreatstohumanhealth.Rigidruleshavebeenmadeoutonthephenoldischargeconcentration.Researchesonthetreatmentofphenolwastewaterwerecarriedoutinvariouscountries1-5].Membraneseparationmethodsincludingreverseosmosis,ultrafiltrationandpervaporationhaveattractedmuchattentionforphenolwastewatertreatment,withcelluloseacetate(CA)membraneemployedmostly6].Membranedistillationisanewmembraneseparation…
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| 关 键 词： | 真空膜蒸馏法 苯酚废水 膜材料 废水处理 聚乙烯亚乙酰基氟化物 膜分离技术 |
Removal of aqueous phenol compound by vacuum membrane distillation |
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| LIU Zuohu,LIU Renlong,DU Jun,TAO Changyuan,LI Xiaohong College of Chemistry & Chemical Engineering,Chongqing University,Chongqing,P. R. China College of Resources & Environmental Science,Chongqing University,Chongqing,P. R. Chin.Removal of aqueous phenol compound by vacuum membrane distillation[J].Journal of Chongqing University,2004,3(1):61-64. |
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| Authors: | Liu Zuohu LIU Renlong DU Jun TAO Changyuan LI Xiaohong |
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| Abstract: | The effects of feed temperature and pH value on the removal of aqueous phenol wastewater by vacuum membrane distillation process are studied by experiments employing micro porous membranes of poly vinylidene fluoride (PVDF) and ploy tetrafluoro ethylene (PTFE) with nominal average pore sizes 0.22 μm and 0.20 ?m, respectively. It is found that the optimal feed temperature for PVDF membrane is 50 ℃; and for PTFE membrane, 60 ℃. The pH value of the feed has little influence on the membrane fluxes and ion rejection ratios, while it influenced considerably on the selectivity. Increase of pH value of the feed is conducive to the increase of selectivity. In the same experimental conditions, PTFE membrane shows better separation performance than PVDF membrane does. |
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| Keywords: | vacuum membrane distillation (VMD) phenol wastewater membrane material |
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