Effects of enzyme-induced carbonate precipitation (EICP) with different urease sources on the zinc remediation.

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος: Effects of enzyme-induced carbonate precipitation (EICP) with different urease sources on the zinc remediation.
Συγγραφείς: Chen Y; MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou, China; Center for Hypergravity Experiment and Interdisciplinary Research, Zhejiang University, Hangzhou, China. Electronic address: chenyanbo@zju.edu.cn., Wang Q; MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou, China. Electronic address: 22212179@zju.edu.cn., Bian Y; MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou, China. Electronic address: 12112065@zju.edu.cn., Zhan L; MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou, China. Electronic address: zhanlt@zju.edu.cn., Gao Y; Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, China. Electronic address: yfgao66@163.com., Guo H; Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences (CAS); CAS Key Laboratory of Renewable Energy; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China. Electronic address: hguoce@ust.hk., Wang Y; Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China. Electronic address: wangyz@sustech.edu.cn., Gao Y; Hebei University, No. 180 Wusi Dong Road, Lian Chi District, Baoding, Hebei, China. Electronic address: yqgao89@hbu.edu.cn.
Πηγή: Journal of hazardous materials [J Hazard Mater] 2024 Dec 05; Vol. 480, pp. 136321. Date of Electronic Publication: 2024 Oct 28.
Τύπος έκδοσης: Journal Article; Research Support, Non-U.S. Gov't
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: Elsevier Country of Publication: Netherlands NLM ID: 9422688 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-3336 (Electronic) Linking ISSN: 03043894 NLM ISO Abbreviation: J Hazard Mater Subsets: MEDLINE
Imprint Name(s): Original Publication: Amsterdam : Elsevier
Ιατρικοί όροι (MeSH): Urease*/metabolism , Urease*/chemistry , Zinc*/chemistry , Carbonates*/chemistry , Chemical Precipitation*, Calcium Carbonate/chemistry ; Calcium Carbonate/metabolism ; Environmental Restoration and Remediation/methods ; X-Ray Diffraction ; Adsorption
Περίληψη: Enzyme-induced carbonate precipitation (EICP) has been studied in the remediation of heavy metals in recent years. This study aims to investigate the impact of EICP with jack bean urease (JU) and sword bean urease (SU) on the Zn2+ remediation. The results show that relatively high concentration of organic molecules in SU can protect urease from deactivation and absorb Zn2+. For the treatment subject to 1 mmol/L of Zn2+ without calcium chloride added, the final NH4+ conversion efficiency and Zn2+ immobilization percentage for the SU group are 95 % and 95.1 % higher than those for JU group, respectively. For the treatment with calcium chloride added, SU group can produce enough CO32-, contributing to over 99 % formation of CaCO3. The CaCO3 can decrease Zn2+ concentration through the physical absorption. The highest Zn2+ immobilization percentage (98.9 %) can be achieved using SU with 0.5 mol/L calcium chloride. The XRD, FTIR and SEM-EDS analysis also show that CaCO3, ZnCO3, and Zn(OH)2 can be generated, and the organic molecules in SU and CaCO3 can adsorb Zn2+. SU is recommended as the catalyzer to immobilize Zn2+. The mechanism of Zn2+ immobilization can be understood as bio-mineralization to form ZnCO3 and Zn(OH)2, as well as adsorption by organic molecules in SU and CaCO3.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Contributed Indexing: Keywords: Calcium carbonate; Enzyme-induced carbonate precipitation; Immobilization efficiency; Urease enzyme; Zinc metal
Substance Nomenclature: EC 3.5.1.5 (Urease)
J41CSQ7QDS (Zinc)
0 (Carbonates)
H0G9379FGK (Calcium Carbonate)
Entry Date(s): Date Created: 20241031 Date Completed: 20241130 Latest Revision: 20250909
Update Code: 20260130
DOI: 10.1016/j.jhazmat.2024.136321
PMID: 39481265
Βάση Δεδομένων: MEDLINE
Περιγραφή
ISSN:1873-3336
DOI:10.1016/j.jhazmat.2024.136321