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 |
DOI | 10.1016/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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