Rapid removal of methylene blue and nickel ions and adsorption/desorption mechanism based on geopolymer adsorbent

doi:10.1016/j.colcom.2021.100551

	Rapid removal of methylene blue and nickel ions and adsorption/desorption mechanism based on geopolymer adsorbent
	Jin, Haize 1,4; Zhang, Youyou 4; Wang, Qikun 2,3; Chang, Qibing 3; Li, Cuixia 1,4
刊名	COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
	2021-11
卷号	45
关键词	Geopolymer Adsorption Desorption Dyes Heavy metal ions
ISSN号	2215-0382
DOI	10.1016/j.colcom.2021.100551
英文摘要	Ongoing researches about adsorption removal of heavy metal ions and dyes are targeted to improve adsorption efficiency and recycle to solve environmental problems. Geopolymer as an adsorbent for wastewater treatment exhibits a good application potential. Here, a rapid removal strategy for methylene blue (MB) and nickel ions based on metakaolin-based geopolymer (MG) is provided. The adjustment of pH allows the MG to expose more negative charge adsorption sites, resulting in rapid removal of MB and Ni2+. The adsorption data fitted well by the pseudo-second-order model and Langmuir model, indicating the chemisorption of MG for MB and Ni2+. The decrease of pH of wash solution is conducive to the desorption of Ni2+. However, the desorption of MB-loading MG proved to be very difficult. This study provides a universal reference and possibility for rapid removal of cationic dyes and heavy metal ions under relatively mild conditions.
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000721375800004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150112]
专题	材料科学与工程学院
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, 287 Langongping Rd, Lanzhou, Gansu, Peoples R China; 2.Harbin Inst Technol, Sch Mat Sci & Engn, Inst Adv Ceram, Harbin 150001, Peoples R China; 3.Jingdezhen Ceram Univ, Sch Mat Sci & Engn, Jingdezhen 333403, Peoples R China 4.Lanzhou Univ Technol, Sch Mat Sci & Engn, 287 Langongping Rd, Lanzhou, Gansu, Peoples R China;
推荐引用方式 GB/T 7714	Jin, Haize,Zhang, Youyou,Wang, Qikun,et al. Rapid removal of methylene blue and nickel ions and adsorption/desorption mechanism based on geopolymer adsorbent[J]. COLLOID AND INTERFACE SCIENCE COMMUNICATIONS,2021,45.
APA	Jin, Haize,Zhang, Youyou,Wang, Qikun,Chang, Qibing,&Li, Cuixia.(2021).Rapid removal of methylene blue and nickel ions and adsorption/desorption mechanism based on geopolymer adsorbent.COLLOID AND INTERFACE SCIENCE COMMUNICATIONS,45.
MLA	Jin, Haize,et al."Rapid removal of methylene blue and nickel ions and adsorption/desorption mechanism based on geopolymer adsorbent".COLLOID AND INTERFACE SCIENCE COMMUNICATIONS 45(2021).