Study on soil physical structure after the bioremediation of Pb pollution using microbial-induced carbonate precipitation methodology

Chen, Minjie; Li, Yafei; Jiang, Xiaoru; Zhao, Dingran; Li, Xuefeng; Zhou, Jin; He, Zhao; Zheng, Chunli; Pan, Xiangliang

doi:10.1016/j.jhazmat.2021.125103

Cited by 81 publications

(20 citation statements)

References 49 publications

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“…Heavy metal contamination not only raises sustainable concerns but also causes threats to human health and plants (Kumari et al, 2016;Jiang et al, 2019;Rahman et al, 2020;Chen et al, 2021a;Tan et al, 2022). In the past few decades, remediation methods including replacement, soil flushing, electrokinetic remediation, chemical precipitation, ion exchange, and phytoremediation were developed (Mena et al, 2016;Kumari et al, 2017;Kumari et al, 2018;Chen and Achal, 2019;Duarte-Nass et al, 2020;Ahenkorah et al, 2021;Hu L. et al, 2021;Jiang et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Calcium Source on Pb and Cu Remediation Using Enzyme-Induced Carbonate Precipitation

Wang

Cheng

Xue

2022

Front. Bioeng. Biotechnol.

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Heavy metal contamination not only causes threat to human health but also raises sustainable development concerns. The use of traditional methods to remediate heavy metal contamination is however time-consuming, and the remediation efficiency may not meet the requirements as expected. The present study conducted a series of test tube experiments to investigate the effect of calcium source on the lead and copper removals. In addition to the test tube experiments, numerical simulations were performed using Visual MINTEQ software package considering different degrees of urea hydrolysis derived from the experiments. The remediation efficiency degrades when NH4+ and OH− concentrations are not sufficient to precipitate the majority of Pb2+ and Cu2+. It also degrades when CaO turns pH into highly alkaline conditions. The numerical simulations do not take the dissolution of precipitation into account and therefore overestimate the remediation efficiency when subjected to lower Pb(NO3)2 or Cu(NO3)2 concentrations. The findings highlight the potential of applying the enzyme-induced carbonate precipitation to lead and copper remediations.

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Section: Introductionmentioning

confidence: 99%

The Effect of Calcium Source on Pb and Cu Remediation Using Enzyme-Induced Carbonate Precipitation

Wang

Cheng

Xue

2022

Front. Bioeng. Biotechnol.

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“…The change of pH, especially into more acidic levels, may transform the stable metal compounds back into their ionic form, increasing their toxicity, mobility, and bioavailability ( Jin and Kirk, 2018 ). Chen et al. (2021) reported that the bioavailability of Pb in soil was substantially reduced by up to 76.3% in neutral pH after bioremediation, but the effect of pH changing was not assessed.…”

Section: Analysis Of Bioaugmentation Applicability In Treating Heavy ...mentioning

confidence: 99%

Practical limitations of bioaugmentation in treating heavy metal contaminated soil and role of plant growth promoting bacteria in phytoremediation as a promising alternative approach

Kurniawan

Ramli

Said

et al. 2022

Heliyon

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“…In MICP, carbonates can bind to the metals (e.g., Pb 2+ and Cu 2+ ) on the surface, after which these metal elements change from soluble forms to insoluble forms, thus reducing their toxicity ( Tamayo-Figueroa et al, 2019 ). The MICP caused by B. pasteurii ATCC 11859 maintained the microbial growth while reducing the available Pb content in the soil, resulting in a decrease in Pb extraction and available Pb content by 76.34 and 41.65%, respectively ( Chen et al, 2021 ).…”

Section: Mechanisms Of Pgpb In Remediation Of Metal-contaminated Soil...mentioning

confidence: 99%

Plant growth-promoting bacteria in metal-contaminated soil: Current perspectives on remediation mechanisms

et al. 2022

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Heavy metal contamination in soils endangers humans and the biosphere by reducing agricultural yield and negatively impacting ecosystem health. In recent decades, this issue has been addressed and partially remedied through the use of “green technology,” which employs metal-tolerant plants to clean up polluted soils. Furthermore, the global climate change enhances the negative effects of climatic stressors (particularly drought, salinity, and extreme temperatures), thus reducing the growth and metal accumulation capacity of remediating plants. Plant growth-promoting bacteria (PGPB) have been widely introduced into plants to improve agricultural productivity or the efficiency of phytoremediation of metal-contaminated soils via various mechanisms, including nitrogen fixation, phosphate solubilization, phytohormone production, and biological control. The use of metal-tolerant plants, as well as PGPB inoculants, should hasten the process of moving this technology from the laboratory to the field. Hence, it is critical to understand how PGPB ameliorate environmental stress and metal toxicity while also inducing plant tolerance, as well as the mechanisms involved in such actions. This review attempts to compile the scientific evidence on this topic, with a special emphasis on the mechanism of PGPB involved in the metal bioremediation process [plant growth promotion and metal detoxification/(im)mobilization/bioaccumulation/transformation/translocation] and deciphering combined stress (metal and climatic stresses) tolerance.

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Study on soil physical structure after the bioremediation of Pb pollution using microbial-induced carbonate precipitation methodology

Cited by 81 publications

References 49 publications

The Effect of Calcium Source on Pb and Cu Remediation Using Enzyme-Induced Carbonate Precipitation

The Effect of Calcium Source on Pb and Cu Remediation Using Enzyme-Induced Carbonate Precipitation

Practical limitations of bioaugmentation in treating heavy metal contaminated soil and role of plant growth promoting bacteria in phytoremediation as a promising alternative approach

Plant growth-promoting bacteria in metal-contaminated soil: Current perspectives on remediation mechanisms

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