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 : Qasem Najafpour (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
Majid Peyravi,Nader Shafaei,Mohsen Jahanshahi,Qasem Najafpour 한국화학공학회 2016 Korean Journal of Chemical Engineering Vol.33 No.10
Photocatalytic self-cleaning polysulfone (PSf) membranes were fabricated by adding different concentrations of WO3 nanoparticles (0-2 wt%) via phase inversion method for ultrafiltration of landfill leachate. To evaluate the feasibility of self-cleaning property by WO3 nanoparticles, all synthesized membranes were tested with and without UV. After UV irradiation, the value of the contact angle for a membrane with 2wt% WO3 decreased from 67.15o to 37.9o. Results showed that the addition of WO3 affected the pore size, porosity and hydrophilicity of the WO3/PSf membrane, so that the porosity of membrane with 2 wt% WO3 reached 84.86%. The flux of the nanocomposite membrane after irradiation by UV light rose in comparison with the same membrane without UV light, and the flux decline rates also decreased. The flux of the membrane with 2wt% WO3 was also better than the other membranes, which shows the self-cleaning property. The chemical oxygen demand (COD) removal of leachate for modified membranes was also improved by increasing the WO3 nanoparticles. The highest COD removal of the modified membrane with 2 wt% WO3 was 54.91%. This value increased to 77.45% after UV radiation.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
