Inoculation of bacteria for the bioremediation of heavy metals contaminated soil by Agrocybe aegerita

Xue, Likun; Dong, Shunwen; Yao, Yuan; Shi, Weimin; Wu, Minghui; Xu, Heng

doi:10.1039/c6ra11767h

Cited by 43 publications

(15 citation statements)

References 57 publications

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“…Similar to our results, Li et al also found the incorporation of Agrocybe aegerita, and the bacteria had a positive effect on HOAc-extractable metals. 11 However, contrary to Liu et al, 49 the residual Cd and Cu were generally descended in S. rugosoannulata-planted groups except in the T7 and T12 groups. The decrease of residual metals might be ascribed to the acidification effects of accumulator and strain CTZ4, both of which could produce acidic substances during the growth process, thus contributing to the desorption of metals from soil.…”

Section: Resultsmentioning

confidence: 68%

Remediation Performance and Mechanism of Heavy Metals by a Bottom Up Activation and Extraction System Using Multiple Biochemical Materials

Xiao

Sun

et al. 2017

ACS Appl. Mater. Interfaces

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Soil contamination with heavy metals has caused serious environmental problems and increased the risks to humans and biota. Herein, we developed an effective bottom up metals removal system based on the synergy between the activation of immobilization metal-resistant bacteria and the extraction of bioaccumulator material (Stropharia rugosoannulata). In this system, the advantages of biochar produced at 400 °C and sodium alginate were integrated to immobilize bacteria. Optimized by response surface methodology, the biochar and bacterial suspension were mixed at a ratio of 1:20 (w:v) for 12 h when 2.5% sodium alginate was added to the mixture. Results demonstrated that the system significantly increased the proportion of acid soluble Cd and Cu and improved the soil microecology (microbial counts, soil respiration, and enzyme activities). The maximum extractions of Cd and Cu were 8.79 and 77.92 mg kg, respectively. Moreover, details of the possible mechanistic insight into the metal removal are discussed, which indicate positive correlation with the acetic acid extractable metals and soil microecology. Meanwhile, the "dilution effect" in S. rugosoannulata probably plays an important role in the metal removal process. Furthermore, the metal-resistant bacteria in this system were successfully colonized, and the soil bacteria community were evaluated to understand the microbial diversity in metal-contaminated soil after remediation.

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Section: Resultsmentioning

confidence: 68%

Remediation Performance and Mechanism of Heavy Metals by a Bottom Up Activation and Extraction System Using Multiple Biochemical Materials

Xiao

Sun

et al. 2017

ACS Appl. Mater. Interfaces

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“…Heavy metals are degraded, transformed, or reduced into less or no toxic contaminants through microbes are known to be bioremediation by microorganisms [ 185 ]. Also, the microorganisms could be employed in controlling the odor during biofiltration.…”

Section: Biofiltration Technique In the Removal Of Heavy Metalsmentioning

confidence: 99%

“…In the biological factors, the microbe’s enzyme activity, size, composition, mutation, and horizontal gene transfer play a key role. Environmental parameters like temperature, pH, nutrients, moisture, and oxygen concentration play a crucial role [ 185 , 186 ]. To overcome these obstructions, genetic variation was executed for the microbes [ 187 ].…”

Section: Biofiltration Technique In the Removal Of Heavy Metalsmentioning

confidence: 99%

“…It is unavoidable to see the sights of metabolic pathways of microbes for the entire removal of contaminants [ 119 ]. In turn, it depends on the nature of the microbe, suitable genus, and its community in the biofilter bed [ 119 , 185 , 187 , 189 ]. Hence, it is necessary to receive complete knowledge about microbial growth and degradation mechanisms to achieve the real employment of biofiltration technology.…”

Section: Key Challenges and Future Perspectivementioning

confidence: 99%

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A review on biofiltration techniques: recent advancements in the removal of volatile organic compounds and heavy metals in the treatment of polluted water

et al. 2022

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Good quality of water determines the healthy life of living beings on this earth. The cleanliness of water was interrupted by the pollutants emerging out of several human activities. Industrialization, urbanization, heavy population, and improper disposal of wastes are found to be the major reasons for the contamination of water. Globally, the inclusion of volatile organic compounds (VOCs) and heavy metals released by manufacturing industries, pharmaceuticals, and petrochemical processes have created environmental issues. The toxic nature of these pollutants has led researchers, scientists, and industries to exhibit concern toward the complete eradication of them. In this scenario, the development of wastewater treatment methodologies at low cost and in an eco-friendly way had gained importance at the international level. Recently, bio-based technologies were considered for environmental remedies. Biofiltration-based works have shown a significant result for the removal of volatile organic compounds and heavy metals in the treatment of wastewater. This was done with several biological sources such as bacteria, fungi, algae, plants, yeasts, etc. The biofiltration technique is cost-effective, simple, biocompatible, sustainable, and eco-friendly compared to conventional techniques. This review article provides deep insight into biofiltration technologies engaged in the removal of volatile organic compounds and heavy metals in the wastewater treatment process.

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“…Total concentrations of Mn, Cu, Zn and Cd in the substrate samples were determined by inductively coupled plasma mass spectrometry (ICP-MS, Thermo, Waltham, MA, USA) after digesting with 5 ml of concentrated nitric acid (HNO 3 ), 5 ml of concentrated hydro uoric acid (HF) and 2 ml of concentrated perchloric acid (HCLO 4 )(Li et al, 2016;Faust and Christians, 2000). Standard reference material GSS-15 was used for quality control of the analytical procedure.…”

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confidence: 99%

Effects of Herbaspirillum Sp. P5–19 Assisted With Alien Soil Improvement on the Phytoremediation of Copper Tailings by Vetiveria Zizanioides

Fang

Huang

Wang

et al. 2021

Preprint

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This study investigated examined the potential of Herbaspirillum sp. p5-19 (p5-19) assisted with alien soil improvement on improving stress tolerance and enhancing the accumulation of Mn, Cu, Zn and Cd by vetiver grass (Vetiveria zizanioides). Phytoremediation potential was evaluated by plant biomass and the ability of plant to absorb and transfer heavy metals. Results showed that the biomass was increased by 19.64%–173.81% in p5-19 inoculation treatments with and without alien soil improvement compared with control. Meanwhile, photosynthetic pigment contents were enhanced in co-inoculation treatment (p5-19 with alien soil improvement). In addition, the malondialdehyde (MDA) content was decreased, and the activities of antioxidant enzymes such as ascorbate peroxidase (APX), superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) were increased in p5-19 treatment, thereby alleviating the oxidative stress. Moreover, co-inoculation significantly (p<0.05) increased the concentrations of Mn, Cu, Zn and Cd in the roots and shoots of vetiver grass. In particular, the highest concentration of Mn, Zn and Cd in the shoots (roots) were obtained in C10 under p5-19 inoculation (C10B), which were 4.44– (2.71–), 4.73– (3.87–) and 5.93– (4.35–) fold as that of the controls, respectively. These results provided basis for the change of phytoremediation ability of vetiver grass after inoculation. We concluded that p5-19 assisted with alien soil improvement was a potential strategy for enhancing phytoremediation ability in tailings.

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Inoculation of bacteria for the bioremediation of heavy metals contaminated soil by Agrocybe aegerita

Abstract: The combination of mushrooms and bacteria was used as a novel technique to remediate soils polluted by heavy metals.

Cited by 43 publications

References 57 publications

Remediation Performance and Mechanism of Heavy Metals by a Bottom Up Activation and Extraction System Using Multiple Biochemical Materials

Remediation Performance and Mechanism of Heavy Metals by a Bottom Up Activation and Extraction System Using Multiple Biochemical Materials

A review on biofiltration techniques: recent advancements in the removal of volatile organic compounds and heavy metals in the treatment of polluted water

Effects of Herbaspirillum Sp. P5–19 Assisted With Alien Soil Improvement on the Phytoremediation of Copper Tailings by Vetiveria Zizanioides

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