Biosorption mechanism of Cr(VI) by live and heat-killed Saccharomyces cerevisiae
The biosorption mechanism of Cr(VI) by live and heat-killed Saccharomyces cerevisiae was investigated in this study. The adsorption behavior of chromium by different active cells was compared based on solution pH, biosorption time, chromium concentration, and cell concentration. The biosorption dyna...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-01-01
|
| Series: | Desalination and Water Treatment |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1944398625000372 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832557592533008384 |
|---|---|
| author | Xinyan Zheng Po Hu Ruxian Yao Junjun Liu Yueshuo Zhang Hongying Mei Qingtai Chen Xin Du |
| author_facet | Xinyan Zheng Po Hu Ruxian Yao Junjun Liu Yueshuo Zhang Hongying Mei Qingtai Chen Xin Du |
| author_sort | Xinyan Zheng |
| collection | DOAJ |
| description | The biosorption mechanism of Cr(VI) by live and heat-killed Saccharomyces cerevisiae was investigated in this study. The adsorption behavior of chromium by different active cells was compared based on solution pH, biosorption time, chromium concentration, and cell concentration. The biosorption dynamic process can be categorized into three stages: rapid biosorption stage, stable precipitation stage, and further biomineralization stage. The two kinds of cells have the same ability to remove chromium ions, with the adsorption rate being above 99 % in a certain time (approximately 20 h). When the solution pH value ranged from 1.0 to 5.0, HCrO4- was identified as the main state of chromium species. Rectangular-shaped flakes with dimensions around 100 nanometers were observed on the surface of live cells, while rod precipitate appeared on the heat-killed cells’ surface. These chromium compounds may be mineralized into bentorite Ca6Cr2(SO4)3(OH)12·26 H2O (ICDD-PDF #33–0248) and chromite crystal CrO(OH) (ICDD-PDF #09–0331). |
| format | Article |
| id | doaj-art-a87fd0a7301843e8a4402c45cc105a72 |
| institution | Kabale University |
| issn | 1944-3986 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Desalination and Water Treatment |
| spelling | doaj-art-a87fd0a7301843e8a4402c45cc105a722025-02-03T04:16:39ZengElsevierDesalination and Water Treatment1944-39862025-01-01321101021Biosorption mechanism of Cr(VI) by live and heat-killed Saccharomyces cerevisiaeXinyan Zheng0Po Hu1Ruxian Yao2Junjun Liu3Yueshuo Zhang4Hongying Mei5Qingtai Chen6Xin Du7Henan Provincial Key Laboratory of Smart Lighting, Zhumadian 463000, China; College of Information Engineering, Huanghuai University, Zhumadian 463000, China; Corresponding author at: Henan Provincial Key Laboratory of Smart Lighting, Zhumadian 463000, China.Henan Provincial Key Laboratory of Smart Lighting, Zhumadian 463000, China; College of Information Engineering, Huanghuai University, Zhumadian 463000, ChinaHenan Provincial Key Laboratory of Smart Lighting, Zhumadian 463000, China; College of Information Engineering, Huanghuai University, Zhumadian 463000, ChinaCollege of Information Engineering, Huanghuai University, Zhumadian 463000, ChinaCollege of Information Engineering, Huanghuai University, Zhumadian 463000, ChinaHenan Provincial Key Laboratory of Smart Lighting, Zhumadian 463000, China; College of Information Engineering, Huanghuai University, Zhumadian 463000, ChinaHenan Provincial Key Laboratory of Smart Lighting, Zhumadian 463000, China; College of Chemistry and Pharmaceutical Engineering, Huanghuai University, Zhumadian 463000, ChinaCollege of Chemistry, Zhengzhou University, Zhengzhou 450000, ChinaThe biosorption mechanism of Cr(VI) by live and heat-killed Saccharomyces cerevisiae was investigated in this study. The adsorption behavior of chromium by different active cells was compared based on solution pH, biosorption time, chromium concentration, and cell concentration. The biosorption dynamic process can be categorized into three stages: rapid biosorption stage, stable precipitation stage, and further biomineralization stage. The two kinds of cells have the same ability to remove chromium ions, with the adsorption rate being above 99 % in a certain time (approximately 20 h). When the solution pH value ranged from 1.0 to 5.0, HCrO4- was identified as the main state of chromium species. Rectangular-shaped flakes with dimensions around 100 nanometers were observed on the surface of live cells, while rod precipitate appeared on the heat-killed cells’ surface. These chromium compounds may be mineralized into bentorite Ca6Cr2(SO4)3(OH)12·26 H2O (ICDD-PDF #33–0248) and chromite crystal CrO(OH) (ICDD-PDF #09–0331).http://www.sciencedirect.com/science/article/pii/S1944398625000372Cr(VI)BiosorptionSaccharomyces cerevisiaeMineralization mechanismChromium precipitate |
| spellingShingle | Xinyan Zheng Po Hu Ruxian Yao Junjun Liu Yueshuo Zhang Hongying Mei Qingtai Chen Xin Du Biosorption mechanism of Cr(VI) by live and heat-killed Saccharomyces cerevisiae Desalination and Water Treatment Cr(VI) Biosorption Saccharomyces cerevisiae Mineralization mechanism Chromium precipitate |
| title | Biosorption mechanism of Cr(VI) by live and heat-killed Saccharomyces cerevisiae |
| title_full | Biosorption mechanism of Cr(VI) by live and heat-killed Saccharomyces cerevisiae |
| title_fullStr | Biosorption mechanism of Cr(VI) by live and heat-killed Saccharomyces cerevisiae |
| title_full_unstemmed | Biosorption mechanism of Cr(VI) by live and heat-killed Saccharomyces cerevisiae |
| title_short | Biosorption mechanism of Cr(VI) by live and heat-killed Saccharomyces cerevisiae |
| title_sort | biosorption mechanism of cr vi by live and heat killed saccharomyces cerevisiae |
| topic | Cr(VI) Biosorption Saccharomyces cerevisiae Mineralization mechanism Chromium precipitate |
| url | http://www.sciencedirect.com/science/article/pii/S1944398625000372 |
| work_keys_str_mv | AT xinyanzheng biosorptionmechanismofcrvibyliveandheatkilledsaccharomycescerevisiae AT pohu biosorptionmechanismofcrvibyliveandheatkilledsaccharomycescerevisiae AT ruxianyao biosorptionmechanismofcrvibyliveandheatkilledsaccharomycescerevisiae AT junjunliu biosorptionmechanismofcrvibyliveandheatkilledsaccharomycescerevisiae AT yueshuozhang biosorptionmechanismofcrvibyliveandheatkilledsaccharomycescerevisiae AT hongyingmei biosorptionmechanismofcrvibyliveandheatkilledsaccharomycescerevisiae AT qingtaichen biosorptionmechanismofcrvibyliveandheatkilledsaccharomycescerevisiae AT xindu biosorptionmechanismofcrvibyliveandheatkilledsaccharomycescerevisiae |