Urease-catalyzed microbial and enzymatic carbonate precipitation for eco-friendly heavy metal remediation.

IF 2 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Letters in Applied Microbiology Pub Date : 2025-02-03 DOI:10.1093/lambio/ovaf022

Adharsh Rajasekar, Armstrong Ighodalo Omoregie, Kan Fock Kui

{"title":"Urease-catalyzed microbial and enzymatic carbonate precipitation for eco-friendly heavy metal remediation.","authors":"Adharsh Rajasekar, Armstrong Ighodalo Omoregie, Kan Fock Kui","doi":"10.1093/lambio/ovaf022","DOIUrl":null,"url":null,"abstract":"<p><p>Heavy metal contamination significantly threatens environmental and public health, necessitating effective and sustainable remediation technologies. This review explores two innovative bioremediation techniques: microbially induced calcium carbonate precipitation (MICP) and enzyme-induced calcium carbonate precipitation (EICP). Both techniques show promise for immobilizing heavy metals in laboratory and field settings. MICP utilizes the metabolic activity of ureolytic microorganisms to precipitate calcium carbonate, sequestering heavy metals such as lead, cadmium, and arsenic as stable metal-carbonate complexes. EICP, on the other hand, employs urease enzymes to catalyze calcium carbonate precipitation, offering greater control over reaction conditions and higher efficiency in environments unfavorable to microbial activity. This mini-review compares the mechanisms of MICP and EICP, focusing on factors influencing their performance, including enzyme or microbial activity, pH, temperature, and nutrient availability. Case studies illustrate their success in sequestering heavy metals, emphasizing their practical applications and environmental benefits. A comparative analysis highlights the strengths and limitations of MICP and EICP regarding cost, scalability, and challenges. This review synthesizes research to support the advancement of MICP and EICP as sustainable solutions for mitigating heavy metal contamination.</p>","PeriodicalId":17962,"journal":{"name":"Letters in Applied Microbiology","volume":" ","pages":""},"PeriodicalIF":2.0000,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Letters in Applied Microbiology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1093/lambio/ovaf022","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Heavy metal contamination significantly threatens environmental and public health, necessitating effective and sustainable remediation technologies. This review explores two innovative bioremediation techniques: microbially induced calcium carbonate precipitation (MICP) and enzyme-induced calcium carbonate precipitation (EICP). Both techniques show promise for immobilizing heavy metals in laboratory and field settings. MICP utilizes the metabolic activity of ureolytic microorganisms to precipitate calcium carbonate, sequestering heavy metals such as lead, cadmium, and arsenic as stable metal-carbonate complexes. EICP, on the other hand, employs urease enzymes to catalyze calcium carbonate precipitation, offering greater control over reaction conditions and higher efficiency in environments unfavorable to microbial activity. This mini-review compares the mechanisms of MICP and EICP, focusing on factors influencing their performance, including enzyme or microbial activity, pH, temperature, and nutrient availability. Case studies illustrate their success in sequestering heavy metals, emphasizing their practical applications and environmental benefits. A comparative analysis highlights the strengths and limitations of MICP and EICP regarding cost, scalability, and challenges. This review synthesizes research to support the advancement of MICP and EICP as sustainable solutions for mitigating heavy metal contamination.

查看原文本刊更多论文

脲酶催化微生物和酶促碳酸盐沉淀法用于生态友好型重金属修复。

重金属污染严重威胁环境和公众健康，因此需要有效和可持续的补救技术。本文综述了两种创新的生物修复技术：微生物诱导碳酸钙沉淀（MICP）和酶诱导碳酸钙沉淀（EICP）。这两种技术都有望在实验室和现场环境中固定重金属。MICP利用溶尿微生物的代谢活性沉淀碳酸钙（CaCO3），将重金属如铅（Pb）、镉（Cd）和砷（as）作为稳定的金属-碳酸盐配合物隔离。另一方面，EICP利用脲酶催化碳酸钙沉淀，在不利于微生物活动的环境中更好地控制反应条件和效率。这篇综述比较了MICP和EICP的机制，重点讨论了影响它们性能的因素，包括酶或微生物活性、pH、温度和养分有效性。案例研究说明了它们在隔离重金属方面的成功，强调了它们的实际应用和环境效益。比较分析突出了MICP和EICP在成本、可扩展性和挑战方面的优势和局限性。本文综述了支持MICP和EICP作为减轻重金属污染的可持续解决方案的研究进展。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Letters in Applied Microbiology 工程技术-生物工程与应用微生物

CiteScore

4.40

自引率

4.20%

发文量

225

审稿时长

3.3 months

期刊介绍： Journal of & Letters in Applied Microbiology are two of the flagship research journals of the Society for Applied Microbiology (SfAM). For more than 75 years they have been publishing top quality research and reviews in the broad field of applied microbiology. The journals are provided to all SfAM members as well as having a global online readership totalling more than 500,000 downloads per year in more than 200 countries. Submitting authors can expect fast decision and publication times, averaging 33 days to first decision and 34 days from acceptance to online publication. There are no page charges.