상세 보기
- Kim, Hyuck Soo;
- Jeong, Seok Soon;
- Lee, Jong Geon;
- Yoon, Jung-Hwan;
- Lee, Sang-Phil;
- ... Kim, Kwon-Rae;
- 외 3명
WEB OF SCIENCE
19SCOPUS
19초록
Biological desulfurization processes of landfill gas yield an enormous amount of biologically produced S (BPS) as a byproduct. Capability of BPS to remove Cd2+ from aqueous solutions was tested and its removal efficiency was compared to that of granular activated carbon (GAC). Kinetics of Cd2+ removal by BPS was a two-stage process with an initial rapid adsorption showing 45% of initial Cd2+ was removed within 5 min, followed by a slower adsorption. Cadmium adsorption onto the BPS fitted the Langmuir isotherm model and maximum adsorption capacity of the BPS (63.3 mg g-1) was 1.8 times higher than that of GAC (36.1 mg g-1). Thermodynamic parameters showed that Cd2+ adsorption by BPS was favorable and endothermic. Data from XPS proved the main adsorption mechanism to be complexation of Cd2+ with sulfides in the BPS. Results demonstrated that BPS can be recycled as a novel adsorbent for Cd2+ removal from wastewater.
키워드
- 제목
- Biologically produced sulfur as a novel adsorbent to remove Cd2+from aqueous solutions
- 저자
- Kim, Hyuck Soo; Jeong, Seok Soon; Lee, Jong Geon; Yoon, Jung-Hwan; Lee, Sang-Phil; Kim, Kwon-Rae; Kim, Sung Chul; Kirkham, M. B.; Yang, Jae E.
- 발행일
- 2021-10-05
- 유형
- Article
- 권
- 419