Exploring the Frontiers of Polymer Science and Technology: From Fundamentals to Applications (English)
발표 구분
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제목
Polymeric Hydrogel for Environmental Applications
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초록
내용
Recent years, factories have discharged a lot of wastewater contains various organic pollutants, it’s harm to the reproductive, immune system and nervous system of human. The enzyme treatment would be the effective method because it’s has several advantages like gentle treatment condition and low energy treatment. However, the cost and recycle limit the developing of enzyme in wastewater treatment. In this study, we plan to use adsorption to immobilize laccase through metal affinity conjugation. Microfluidic system is the useful tool for automatically massive production biological support. The particle size of bio-support is 266 µm and it’s uniform. Laccase immobilization combined with Laccase-mediator system (LMS) to degrade Congo red (CR) and Bisphenol A (BPA). The nature mediator ACE and SYR are effective to degrade CR and BPA, the degradation efficiency of CR would reach 80.53% and 78.71 % by ACE and SYR after 10 hours. Both mediators are fail after 15 times reuse. The degradation efficiency of BPA would reach 80.70% and 76.36 % by ACE and SYR after 20 minutes. Both mediators are fail after 5 times reuse. From the mass spectrum, it shows the degradation of CR might occur at breaking azo bonds, desulfonation, amine oxidation and produce 1,2-Dinitronaphthalene material by LMS. The BPA degradation product is p-Isopropenylphenol after BPA degradation and it’s not toxic material by LMS. The LMS degradation mechanisms are Electron Transfer (ET) and Hydrogen Atom Transfer (HAT) to oxidize CR and BPA. Based on the above results, LMS is the effective method to degrade CR and BPA. Among them, the degradation of BPA would reach the effect after 20 minutes, and the degradation of CR is highly reusable.