Biochemical composite material using corncob powder as a carrier material for ureolytic bacteria in soil cadmium immobilization

Li, Weila; Yang, Yifan; Achal, Varenyam

doi:10.1016/j.scitotenv.2021.149802

Cited by 47 publications

(23 citation statements)

References 29 publications

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“…The problem has focused on the rapid demographic growth and industrialization that have led to serious problems of pollution and deterioration of the environment, especially in developing countries (Wu et al 2022 ). Among the metals of greatest environmental concern are lead (Pb) and mercury (Hg), followed by beryllium (Be), barium (Ba), cadmium (Cd), copper (Cu), manganese (Mn), nickel (Ni), tin, (Sn), vanadium (V), and zinc (Zn) (Gan et al 2017 ; C. Li et al 2022a , b , c ; Singh et al 2020 ). Industrial and mining activity releases metals such as mercury and cadmium into the environment, which are very harmful to human health and most living forms.…”

Section: Introductionmentioning

confidence: 99%

“…Mercury is still used extensively in the gold mines of Latin America, while cadmium is found in many fertilizers and pesticides that are applied daily in agricultural areas. Cadmium (Cd) and mercury (Hg) accumulation in soils has been rapidly increased due to natural (e.g., sediments) and anthropogenic (e.g., mining and agriculture) process (Y. Li et al 2022a , b , c ; Liu et al 2020 ; Yuan et al 2022 ). These heavy metals are non-biodegradable.…”

Section: Introductionmentioning

confidence: 99%

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Changes in Lolium perenne L. rhizosphere microbiome during phytoremediation of Cd- and Hg-contaminated soils

Saldarriaga

López

Díaz-García

et al. 2023

Environ Sci Pollut Res

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The contamination of soil and water by metals such as mercury (Hg) and cadmium (Cd) has been increasing in recent years, because of anthropogenic activities such as mining and agriculture, respectively. In this work, the changes in the rhizosphere microbiome of Lolium perenne L. during the phytoremediation of soils contaminated with Hg and Cd were evaluated. For this, two soil types were sampled, one inoculated with mycorrhizae and one without. The soils were contaminated with Hg and Cd, and L. perenne seeds were sown and harvested after 30 days. To assess changes in the microbiome, DNA isolation tests were performed, for which samples were subjected to two-step PCR amplification with specific 16S rDNA V3-V4 primers (337F and 805R). With mycorrhizae, changes had been found in the absorption processes of metals and a new distribution. While with respect to microorganisms, families such as the Enterobacteriaceae have been shown to have biosorption and efflux effects on metals such as Hg and Cd. Mycorrhizae then improve the efficiency of removal and allow the plant to better distribute the absorbed concentrations. Overall, L. perenne is a species with a high potential for phytoremediation of Cd- and Hg-contaminated soils in the tropics. Inoculation with mycorrhizae modifies the phytoremediation mechanisms of the plant and the composition of microorganisms in the rhizosphere. Mycorrhizal inoculation and changes in the microbiome were associated with increased plant tolerance to Cd and Hg. Microorganism-assisted phytoremediation is an appropriate alternative for L. perenne.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Changes in Lolium perenne L. rhizosphere microbiome during phytoremediation of Cd- and Hg-contaminated soils

Saldarriaga

López

Díaz-García

et al. 2023

Environ Sci Pollut Res

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“…For the augmented MICP, bacteria are typically grown to the desired concentration in the laboratory using specific culture media. Some representative culture media are frequently selected for preparing target strains, including ammonium-yeast medium ( Whiffin et al, 2007 ; Jiang et al, 2019 ; Liu et al, 2020 ), urea-yeast medium ( Amiri and Bundur, 2018 ), urea rich-ammonium-yeast medium and nutrient broth-urea (NBU) medium ( Zhang et al, 2018 ; Yi et al, 2021 ; Yin et al, 2021a ; Li et al, 2022 ; see Supplementary Table S1 ). Either urea or ammonium can induce high urease activity in this situation.…”

Section: Key Factors Influencing the Performance Of Micp Bioremediationmentioning

confidence: 99%

“…The use of carrier materials can provide microbes with physical support and improved access to nutrients, moisture, and oxygen, resulting in a higher survival rate under harsh conditions. Li et al (2022) prepared a sustainable material carrier, corncob powder, for the immobilization of ureolytic bacterium; this treatment sustains their survivability in extremely Cd-contaminated soils and boosts their functionality for Cd remediation. The porous structure of corncob provided a high surface area for the entrapment of cells, and its high organic matter content could support nutrients for the ureolytic strain, along with low cost render it suitable candidate as a carrier.…”

Section: Strategies For Enhancing the Performance Of Ureolytic Bacter...mentioning

confidence: 99%

“…Numerous studies have examined the bioremediation potential of microbes at HM-contaminated sites by inducing carbonate precipitation and transforming free toxic ions into inactive forms in stable and long-lasting matrices ( Achal et al, 2011 ; Fang et al, 2021 ; Yin et al, 2021a ; Li et al, 2021b ). Therefore, it is widely accepted that MICP is an environmentally friendly method for accelerating HM removal rates by optimizing limiting factors ( Wang et al, 2021 ; Li et al, 2022 ). MICP is a dynamically changing process that engages in minerals crystallization evolution and microbial metabolism, controlled by multiple factors in complex environments, including pH, temperature, bacterial strains, availability of nutrients, calcium sources, etc.…”

Section: Introductionmentioning

confidence: 99%

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Heavy metal bioremediation using microbially induced carbonate precipitation: Key factors and enhancement strategies

Zhang

Zhang²,

Xu³

et al. 2023

Front. Microbiol.

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With the development of economy, heavy metal (HM) contamination has become an issue of global concern, seriously threating animal and human health. Looking for appropriate methods that decrease their bioavailability in the environment is crucial. Microbially induced carbonate precipitation (MICP) has been proposed as a promising bioremediation method to immobilize contaminating metals in a sustainable, eco-friendly, and energy saving manner. However, its performance is always affected by many factors in practical application, both intrinsic and external. This paper mainly introduced ureolytic bacteria-induced carbonate precipitation and its implements in HM bioremediation. The mechanism of HM immobilization and in-situ application strategies (that is, biostimulation and bioaugmentation) of MICP are briefly discussed. The bacterial strains, culture media, as well as HMs characteristics, pH and temperature, etc. are all critical factors that control the success of MICP in HM bioremediation. The survivability and tolerance of ureolytic bacteria under harsh conditions, especially in HM contaminated areas, have been a bottleneck for an effective application of MICP in bioremediation. The effective strategies for enhancing tolerance of bacteria to HMs and improving the MICP performance were categorized to provide an in-depth overview of various biotechnological approaches. Finally, the technical barriers and future outlook are discussed. This review may provide insights into controlling MICP treatment technique for further field applications, in order to enable better control and performance in the complex and ever-changing environmental systems.

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Mechanistic Insights into Cadmium Cleanup Through MICP: Navigating Challenges and Future Avenues

Anand,

Singh,

Kumar

2024

Lecture Notes in Civil Engineering

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Biochemical composite material using corncob powder as a carrier material for ureolytic bacteria in soil cadmium immobilization

Cited by 47 publications

References 29 publications

Changes in Lolium perenne L. rhizosphere microbiome during phytoremediation of Cd- and Hg-contaminated soils

Changes in Lolium perenne L. rhizosphere microbiome during phytoremediation of Cd- and Hg-contaminated soils

Heavy metal bioremediation using microbially induced carbonate precipitation: Key factors and enhancement strategies

Mechanistic Insights into Cadmium Cleanup Through MICP: Navigating Challenges and Future Avenues

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