A convenient and user-friendly hydrometallurgical process for preparing porous siliceous adsorbents using ascharite tailings: Mechanism of structural change and evaluation of adsorption properties

doi:10.1016/j.colsurfa.2023.132787

IMR OpenIR

	A convenient and user-friendly hydrometallurgical process for preparing porous siliceous adsorbents using ascharite tailings: Mechanism of structural change and evaluation of adsorption properties
	Shi, Peiyang 1,2; Liu, Yuzhe 1,2,3; Chao, Qingyang 1,2; Jiang, Maofa 1,2
通讯作者	Liu, Yuzhe(liuyuzhe941209@163.com)
	2024-01-20
发表期刊	COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
ISSN	0927-7757
卷号	681 页码:14
摘要	Ascharite tailings are discarded by the boron industry due to their low boron content and high magnesium content. Additionally, the large-scale storage of these tailings contributes to resource wastage and environmental pollution. The present study successfully prepared a siliceous adsorbent through the combined use of mechanical and acid activation methods. The tailings underwent acid treatment under mild conditions, leading to the dissolution of magnesium while maintaining the integrity of the silicate framework. This process resulted in the formation of a mesoporous structure primarily composed of slit-shaped pores. The specific surface area reached 234.7 m2 g-1, while the pore volume reached 0.31 cm3 g-1. The maximum adsorption capacity for methylene blue was 0.66 mg m- 2 per unit of surface area. The pollutants displayed a flat orientation at equilibrium, with a maximum tilt angle of approximately 53 degrees. The adsorption rate was limited due to the decrease in available adsorption sites. However, mechanical activation increased the density of active silanol sites from 2.76 to 4.34 mg m- 2, significantly weakening the shielding effect on other potential sites. Thus, tailings resources can be effectively converted into valuable adsorbent materials using a convenient and controllable hydrometallurgical process.
关键词	Ascharite tailings Mechanochemical activation Siliceous porous adsorbents Surface silanol Inner structural change Methylene blue adsorption mechanism
资助者	Liaoning Provincial Natural Science Foun-dation of China ; Fundamental Research Funds for the Central Universities
DOI	10.1016/j.colsurfa.2023.132787
收录类别	SCI
语种	英语
资助项目	Liaoning Provincial Natural Science Foun-dation of China[52074078] ; Fundamental Research Funds for the Central Universities[2019-MS-127] ; [N2025035]
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:001126205600001
出版者	ELSEVIER
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/182957
专题	中国科学院金属研究所
通讯作者	Liu, Yuzhe
作者单位	1.Northeastern Univ, Key Lab Ecol Met Multimet Mineral, Minist Educ, Shenyang 110819, Peoples R China 2.Northeastern Univ, Sch Met, Shenyang 11081, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Shi, Peiyang,Liu, Yuzhe,Chao, Qingyang,et al. A convenient and user-friendly hydrometallurgical process for preparing porous siliceous adsorbents using ascharite tailings: Mechanism of structural change and evaluation of adsorption properties[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2024,681:14.
APA	Shi, Peiyang,Liu, Yuzhe,Chao, Qingyang,&Jiang, Maofa.(2024).A convenient and user-friendly hydrometallurgical process for preparing porous siliceous adsorbents using ascharite tailings: Mechanism of structural change and evaluation of adsorption properties.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,681,14.
MLA	Shi, Peiyang,et al."A convenient and user-friendly hydrometallurgical process for preparing porous siliceous adsorbents using ascharite tailings: Mechanism of structural change and evaluation of adsorption properties".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 681(2024):14.