中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid

Feasible synthesis of coal fly ash based porous composites with multiscale pore structure and its application in Congo red adsorption

文献类型:期刊论文

作者Sun, Guangchao1,2; Zhang, Jiayu1,2; Hao, Bianlei1,2; Li, Xiang1,2; Yan, Mingwei1,3; Liu, Kaiqi1,2,3
刊名CHEMOSPHERE
出版日期2022-07-01
卷号298页码:9
ISSN号0045-6535
关键词Fly ash LDH Multiscale pore structure Epitaxial growth Adsorption
DOI10.1016/j.chemosphere.2022.134136
英文摘要Facing the great challenge that the increasing solid waste fly ash is difficult to treat and utilize properly, this paper reports a class of novel low-cost fly ash porous materials with high interconnected porosity fabricated by a facile foaming process. On this basis, composites with multiscale pore structures from the nanometer to macroscopic scale were designed and constructed by decorating layered double hydroxide (LDH) onto the inner channel surface. Such porous materials with 3D through-hole structures showed high interconnected porosity (up to 77.61%), suitable compressive strength (up to 23.79 MPa) and significant water permeation flux (549.86 m(3).m(-2).h(-1) at 0.1 MPa). Moreover, the adsorption effect of dosage, initial concentration, pH, temperature and contact time on Congo red (CR) from simulated wastewater was investigated. The composites exhibited a good adsorption efficiency of -100% and adsorption capacities of 45.79 mg/g. The adsorption kinetic can be explained well by the pseudosecond-order kinetic equation and isotherm adsorption followed Langmuir isotherm model. This suggests that low-cost and eco-friendly fly ash composites have potential applications in industrial-scale wastewater treatment. This work also provides a general strategy to design and utilize fly ash porous materials for filtration and adsorption.
WOS关键词LAYERED DOUBLE HYDROXIDES ; EFFICIENT REMOVAL ; LDH ; EQUILIBRIUM ; MECHANISM ; CERAMICS ; POROSITY ; CAPACITY ; IONS ; DYES
资助项目National Key R&D Program of China[2019YFC1904300] ; National Natural Science Foundation of China[22005309] ; Fund of State Key Laboratory of Multiphase complex systems ; Key Research Program of Nanjing IPE Institute of Green Manufacturing Industry[E0010717]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000781348300002
资助机构National Key R&D Program of China ; National Natural Science Foundation of China ; Fund of State Key Laboratory of Multiphase complex systems ; Key Research Program of Nanjing IPE Institute of Green Manufacturing Industry
源URL[http://ir.ipe.ac.cn/handle/122111/52693]  
专题中国科学院过程工程研究所
通讯作者Liu, Kaiqi
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Nanjing IPE Inst Green Mfg Ind, Nanjing 211135, Peoples R China
推荐引用方式
GB/T 7714
Sun, Guangchao,Zhang, Jiayu,Hao, Bianlei,et al.

Feasible synthesis of coal fly ash based porous composites with multiscale pore structure and its application in Congo red adsorption

[J]. CHEMOSPHERE,2022,298:9.
APA Sun, Guangchao,Zhang, Jiayu,Hao, Bianlei,Li, Xiang,Yan, Mingwei,&Liu, Kaiqi.(2022).

Feasible synthesis of coal fly ash based porous composites with multiscale pore structure and its application in Congo red adsorption

.CHEMOSPHERE,298,9.
MLA Sun, Guangchao,et al."

Feasible synthesis of coal fly ash based porous composites with multiscale pore structure and its application in Congo red adsorption

".CHEMOSPHERE 298(2022):9.

入库方式: OAI收割

来源:过程工程研究所

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