Highly efficient capture of mercury from complex water matrices by AlZn alloy reduction-amalgamation and in situ layered double hydroxide

Fang, Yetian1; Li, Fangyuan1; Chao, Jingbo2; Tang, Yang3; Coulon, Frederic4; Krasucka, Patrycja5; Oleszczuk, Patryk5; Hu, Qing6,7; Yang, Xiao Jin1,8

2023-02-01

10.1080/09593330.2023.2180437

ENVIRONMENTAL TECHNOLOGY   影响因子和分区

0959-3330

1479-487X

Mercury pollution is a critical, worldwide problem and the efficient, cost-effective removal of mercury from complex, contaminated water matrices in a wide pH range from strongly acidic to alkaline has been a challenge. Here, AlZn and AlFe alloys are investigated and a new process of synergistic reduction-amalgamation and in situ layered double hydroxide (SRA-iLDH) for highly efficient capture of aqueous Hg(II) is developed using AlZn alloys. The parameters include the pH values of 1-12, the Hg(II) concentrations of 10-1000 mg L-1, and the alloy's Zn concentrations of 20%, 50% and 70% and Fe concentrations of 10%, 20% and 50%. The initial rate of Hg(II) uptake by AlZn alloys decreases with increasing Zn concentration while the overall rate is not affected. Specifically, AlZn50 alloy removes >99.5% Hg(II) from 10 mg L-1 solutions at pH 1-12 in 5 min at a rate constant of 0.055 g mg(-1) min(-1) and achieves a capacity of 5000 mg g(-1), being the highest value reported so far. The super-performance of AlZn alloy is attributed to multiple functions of chemical reduction, dual amalgamation, in situ LDH's surface complexation and adsorption, isomorphous substitution and intercalation. This study provides a simple and highly efficient approach for removing Hg(II) from complex water matrices.

Mercury wastewater aluminium-zinc alloy reductive amalgamation in situ layered doubled hydroxide

SCI ; EI

英语

其他

Environmental Sciences & Ecology

Environmental Sciences

WOS:000939716300001

TAYLOR & FRANCIS LTD

20230913651815

Alkalinity ; Aluminum alloys ; Binary alloys ; Cost effectiveness ; Mercury amalgams ; Mercury compounds ; pH ; Water pollution ; Zinc alloys

Water Pollution:453 ; Aluminum Alloys:541.2 ; Zinc and Alloys:546.3 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Chemistry, General:801.1 ; Chemical Reactions:802.2 ; Industrial Economics:911.2

ENVIRONMENT/ECOLOGY

Web of Science

1.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing, Peoples R China
2.Natl Inst Metrol, Beijing, Peoples R China
3.Beijing Univ Chem Technol, Natl Fundamental Res Lab New Hazardous Chem Assess, Beijing, Peoples R China
4.Cranfield Univ, Sch Water Energy & Environm, Cranfield, England
5.Mar Curie Sklodowska Univ, Fac Chem, Dept Radiochem & Environm Chem, Lublin, Poland
6.Southern Univ Sci & Technol, Shenzhen, Peoples R China
7.Beijing Huanding Environm Big Data Inst, Beijing, Peoples R China
8.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

Fang, Yetian,Li, Fangyuan,Chao, Jingbo,et al. Highly efficient capture of mercury from complex water matrices by AlZn alloy reduction-amalgamation and in situ layered double hydroxide[J]. ENVIRONMENTAL TECHNOLOGY,2023.

Fang, Yetian.,Li, Fangyuan.,Chao, Jingbo.,Tang, Yang.,Coulon, Frederic.,...&Yang, Xiao Jin.(2023).Highly efficient capture of mercury from complex water matrices by AlZn alloy reduction-amalgamation and in situ layered double hydroxide.ENVIRONMENTAL TECHNOLOGY.

Fang, Yetian,et al."Highly efficient capture of mercury from complex water matrices by AlZn alloy reduction-amalgamation and in situ layered double hydroxide".ENVIRONMENTAL TECHNOLOGY (2023).