Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Photocatalytic Membrane for Contaminants Degradation: A Review

오염물질 분해를 위한 광촉매 분리막: 총설

  • Kahkahni, Rabea (Integrated Science and Engineering Division (ISED), Underwood International College, Yonsei University) ;
  • Patel, Rajkumar (Energy and Environmental Science and Engineering (EESE), Integrated Science and Engineering Division (ISED), Underwood International College, Yonsei University) ;
  • Kim, Jong Hak (Department of Chemical and Biomolecular Engineering, Yonsei University)
  • 라비아 카갛니 (연세대학교 언더우드학부 융합과학공학부) ;
  • 라즈쿠마 파텔 (연세대학교 언더우드학부 융합과학공학부 에너지환경융합전공) ;
  • 김종학 (연세대학교 화공생명공학과)
  • Received : 2022.02.14
  • Accepted : 2022.02.23
  • Published : 2022.02.28
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Abstract

Growing industrialization leads to severe water pollution. Organic effluents from pharmaceuticals and textile industries released in wastewater adversely affect the environment and human health. Presence of antibiotics used for antibacterial treatment in wastewater leads to the growth of drug resistance bacteria, which is very harmful for human being. Various small organic molecules are used for the preparation of organic dye molecules in the textile industries. These molecules hardly degrade, which is present in the wastewater effluents from printing and dyeing industries. In order to address these problems, photoactive catalyst is embedded in the membrane and wastewater are passed through it. Through this process, organic molecules are photodegraded and at the same time, the degraded compounds are separated by the membrane. Titanium dioxide (TiO2) is a semiconductor which behave as excellent photocatalyst. Photocatalytic ability is enhanced by the making its composite with other transition metal oxide and incorporated into polymeric membrane. In this review, the degradation of dye and drug molecules by photocatalytic membrane are discussed.

성장하는 산업화는 심각한 수질 오염으로 이어진다. 폐수로 배출되는 약품과 섬유산업에서 나오는 유기배출물은 환경과 생명에게 악영향을 미친다. 항균치료에 사용되는 항생제가 폐수에 존재하면 인체에 매우 해로운 약제 내성균의 성장을 야기하게 된다. 섬유산업에서 사용되는 유기염료 분자의 제조에는 다양한 유기 저분자가 사용된다. 이러한 분자들은 인쇄 및 염색 산업의 폐수 배출물에 존재하여 분해가 잘 이루지지 않는다. 이러한 문제들을 해결하기 위해 광분해성 촉매를 분리막에 도입하고 폐수를 처리한다. 이 과정을 통해 유기 분자는 광분해되며 동시에 분해된 화합물들은 분리막을 통과하여 분리된다. 이산화티타늄(TiO2)은 뛰어난 광촉매 역할을 하는 반도체이다. 다른 전이 금속 산화물과 화합물을 만들고 고분자 막에 도입하여 광촉매 능력을 증가시킨다. 본 총설에서는 광촉매성 분리막에 의한 염료 및 약물 분자의 분해에 대해 논의한다.

Keywords

Acknowledgement

This work was supported by the Material & Component Technology Development Program (20010846, Development of nano sized biofilter and module for virus removal) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea).

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