Sung Wook WON, Jiyeong PARK, In-Seob KWAK, SATHISHKUMAR, Yeoung-Sang YUN, Juan MAO
언어
영어(ENG)
URL
https://www.earticle.net/Article/A104620
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원문정보
초록
영어
In this study, a high performance biosorbent, PEI-modified biosorbent, was developed by cross-linking with polyethylenimine (PEI) on the surface of inactive waste biomass of Escherichia coli, which is generated from a Lphenylalanine fermentation plant. Platinum-bearing wastewater was collected from industrial analytical laboratory and was used as a model platinum waste solution. Sorption performance of the PEI-modified biosorbent was evaluated using kinetic and isotherm experiments and compared with that of the raw biomass. The maximum platinum uptake of PEI-modified biomass was as high as 108.8 mg/g compared to 21.4 mg/g of raw biomass. The kinetic experiments revealed that sorption equilibrium could be attained within 60 min. The results of FTIR and XPS analyses of Pt-unloaded and Pt-loaded PEImodified biosorbents showed that the electrostatic interaction would be the main binding mechanism between the platinum ions and binding sites on the surface of biosorbents. Metallic form of platinum in ash could be recovered by incineration, with over 98.7% of recovery efficiency. Furthermore, TEM, XPS and XRD results confirmed that the forms of platinum were existed as Pt0 and Pt2+ (as platinum oxide) in the incineration ash. Therefore, it can be concluded that the developed PEI-modified biosorbent can be used for platinum recovery through a combined process of biosorption and incineration.
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
5. 생물공학 발전을 위한 정책 건의
6. 기타 국제 교류 등 본 학회의 목적 달성을 위한 제반 활동