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Adsorption of phosphorus from eutrophic seawater using microbial modified attapulgite- cleaner production, remove behavior, mechanism and cost-benefit analysis

文献类型：期刊论文

作者Xu, Chenglong1,2,3; Feng, Yali1,3; Li, Haoran2,3; Yang, Yi3; Jiang, Shiwei1; Wu, Ruifeng1,3; Ma, Ruiyu1; Xue, Zhonghua1
刊名CHEMICAL ENGINEERING JOURNAL
出版日期2023-02-15
卷号458页码:15
关键词Phosphorus Eutrophic seawater Silicate bacteria Modified attapulgite Adsorption Fixed-bed column
ISSN号1385-8947
DOI10.1016/j.cej.2023.141404
英文摘要A novel seawater phosphorus adsorption material (AT@SiB-X) has been developed through the modification of attapulgite (AT) by silicate bacteria (SiB-X) in this study, enabling efficient separation of phosphate from seawater. The phosphorus adsorption capacity of AT@SiB-X reached 9.54 mg/g, and its specific surface area and pore volume increased by 49.3-175.0 % and 12.5-47.4 %, respectively when compared with unmodified AT. Moreover, the SiB-X accelerated the decomposition of minerals and dissolution of metal elements (e.g., Ca, Mg, Al and Fe), resulting in a 16.7-fold increase in phosphorus adsorption. The adsorption process is controlled by multiple mechanisms, including electrostatic attraction, ion exchange, complexation, chemical precipitation, and physical adsorption. The path analysis suggested that both physical structure and chemical element release played a joint role in phosphorus adsorption. What's more, pore structure change of the material was the main mechanism affecting its adsorption capacity. The fixed bed column dynamically removed 98 % of phosphorus from mariculture wastewater, which achieved of 7.02 yen /ton wastewater treatment cost. The production cost of AT@SiB-X is about 2000 yen /ton, which is much lower than the current average market value of commercial adsorption materials (e.g., activated carbon). The experimental results demonstrated that the AT@SiB-X exhibited excellently in regeneration, which is resulted by the impressive adsorption efficiency and little pos-sibilities of overcrowding. Thus, it is highly feasible to achieve commercial application of microbially modified attapulgite.
WOS关键词CALCIUM-RICH ATTAPULGITE ; LAYERED DOUBLE HYDROXIDES ; PHOSPHATE REMOVAL ; AQUEOUS-SOLUTION ; ACTIVATED CARBON ; PALYGORSKITE ; BATCH ; WATER ; SUBSTRATE ; SORPTION
资助项目Major Science and Technology Program for Water Pollution Control and Treatment[2015ZX07205-003] ; China Ocean Mineral Resources R D Association[DY135-B2-15]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000924697600001
出版者ELSEVIER SCIENCE SA
资助机构Major Science and Technology Program for Water Pollution Control and Treatment ; China Ocean Mineral Resources R D Association
源URL[http://ir.ipe.ac.cn/handle/122111/56976]  
通讯作者Feng, Yali; Li, Haoran
作者单位1.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Chenglong,Feng, Yali,Li, Haoran,et al. Adsorption of phosphorus from eutrophic seawater using microbial modified attapulgite- cleaner production, remove behavior, mechanism and cost-benefit analysis[J]. CHEMICAL ENGINEERING JOURNAL,2023,458:15.
APA Xu, Chenglong.,Feng, Yali.,Li, Haoran.,Yang, Yi.,Jiang, Shiwei.,...&Xue, Zhonghua.(2023).Adsorption of phosphorus from eutrophic seawater using microbial modified attapulgite- cleaner production, remove behavior, mechanism and cost-benefit analysis.CHEMICAL ENGINEERING JOURNAL,458,15.
MLA Xu, Chenglong,et al."Adsorption of phosphorus from eutrophic seawater using microbial modified attapulgite- cleaner production, remove behavior, mechanism and cost-benefit analysis".CHEMICAL ENGINEERING JOURNAL 458(2023):15.

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来源：过程工程研究所

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