Efficient heavy metal removal from water by alginate-based porous nanocomposite hydrogels: The enhanced removal mechanism and influencing factor insight

doi:10.1016/j.jhazmat.2021.126358

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Efficient heavy metal removal from water by alginate-based porous nanocomposite hydrogels: The enhanced removal mechanism and influencing factor insight
	Zhang, Wei 1,2; Ou, Ji 1; Wang, Bin 3; Wang, Hongyu 3; He, Qiulai 4; Song, Jianyang 5; Zhang, Huining 6; Tang, Meiyi 7; Zhou, Lean 1,2; Gao, Yang 1,2
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2021-09-15
卷号	418
关键词	Heavy metal Hydrogel Sodium alginate Encapsulation Enhanced adsorption
ISSN号	0304-3894
DOI	10.1016/j.jhazmat.2021.126358
英文摘要	Novel porous alginate-based nanocomposite hydrogels were prepared by incorporating polyaniline-polypyrrole modified graphene oxide (GO@PAN-PPy) as reinforcing fillers into the alginate matrix (GO@PAN-PPy/SA) for Cr(VI) and Cu(II) removal from water. Different in-situ co-polymerization functionalized GO with Py-to-An mass ratios of monomers (from nil to 1:1) and contents of GO@PAN-PPy (from nil to 2.0%(w/v)) were embedded into the alginate backbone to improve the sorption performance. Key factors, such as pH, coexisting metal ions, and swelling states were investigated in batch adsorption modes. The synergistic effect combined from polymer backbone and fillers could lower the impact of the pH-dependent adsorption reaction. With an adsorption ability superior to that of plain SA and GO/SA, the optimized GO@PAN-PPy-2(1)/SA exhibited good experimental maximum adsorption capacities for Cr(VI) (-133.7 mg/g) and Cu(II) (-87.2 mg/g) at pH 3.0, which were better than those of many other similar sorbents. The sorbents possessed excellent adaptability for 0.2 M salt for Cr(VI) removal but poor for Cu(II) removal. Pre-swelling treatment and co-adsorption could enhance the adsorption performance. The excellent reusability of hydrogel was demonstrated after five cycles in single/binary system. Overall, this work reveals that the resultant hydrogel holds potential as candidate sorbent to remove anionic cationic heavy metal ions from water.
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000689377400004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148542]
专题	土木工程学院
作者单位	1.Changsha Univ Sci & Technol, Sch Hydraul Engn, Changsha 410114, Peoples R China; 2.Key Lab Dongting Lake Aquat Ecoenvironm Control &, Changsha 410114, Peoples R China; 3.Wuhan Univ, Sch Civil Engn, Wuhan 430072, Peoples R China; 4.Hunan Univ, Coll Civil Engn, Dept Water Engn & Sci, Key Lab Bldg Safety & Energy Efficiency,Minist Ed, Changsha 410082, Hunan, Peoples R China; 5.Nanyang Inst Technol, Sch Civil Engn, Nanyang 473004, Peoples R China; 6.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China; 7.China West Construct Hunan Grp Co Ltd, Changsha 410114, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Wei,Ou, Ji,Wang, Bin,et al. Efficient heavy metal removal from water by alginate-based porous nanocomposite hydrogels: The enhanced removal mechanism and influencing factor insight[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,418.
APA	Zhang, Wei.,Ou, Ji.,Wang, Bin.,Wang, Hongyu.,He, Qiulai.,...&Sun, Shiquan.(2021).Efficient heavy metal removal from water by alginate-based porous nanocomposite hydrogels: The enhanced removal mechanism and influencing factor insight.JOURNAL OF HAZARDOUS MATERIALS,418.
MLA	Zhang, Wei,et al."Efficient heavy metal removal from water by alginate-based porous nanocomposite hydrogels: The enhanced removal mechanism and influencing factor insight".JOURNAL OF HAZARDOUS MATERIALS 418(2021).