Bioremediation of cadmium polluted soil using a novel cadmium immobilizing plant growth promotion strain Bacillus sp. TZ5 loaded on biochar

Ma, Hang; Wei, Mingyang; Wang, Ziru; Hou, Siyu; Li, Xuedan; Xu, Heng

doi:10.1016/j.jhazmat.2020.122065

Cited by 143 publications

(50 citation statements)

References 53 publications

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“…6b) and the highest r value (r = 0.35, p < 0.01 and r = 0.40, p < 0.01, respectively). Both available Cd and HOAc-extractable Cd were both indicators to evaluate the mobility and toxicity of Cd in soil to microbes (Ma et al, 2020). Bacillus was more sensitive to changes in available Cd (r = 0.84, p < 0.01) than HOAc-extractive Cd (r = 0.71, p < 0.01) under aerobic condition, while the opposite occurred under anaerobic conditions.…”

Section: Interactive Relationships Between the Composites And Indigenous Microorganismsmentioning

confidence: 99%

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Effects of magnetic biochar-microbe composite on Cd remediation and microbial responses in paddy soil

Wang

Chen

et al. 2021

Journal of Hazardous Materials

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There is growing global interest in the bioremediation of cadmium (Cd) using combinations of biochar and microorganisms. However, the interactions among biochar, introduced and indigenous microorganisms remain unclear. Accordingly, a 90 day microcosm experiment was conducted to investigate this by adding Bacillus sp. K1 strain inoculated rice straw biochar (SBB) and magnetic straw biochar (MBB) into a Cd contaminated paddy soil from Hunan, China. All treatments were incubated aerobically (60% water holding capacity) or anaerobically for 90 d. During both soil incubations, Bacillus sp. K1 successfully colonized in soil with composites applications. Soil pH was significantly increased from acid to neutral, and available Cd decreased with the addition of both composites. The better remediation efficiency of MBB than SBB under anerobic conditions was attributed to the transformation of acetic acid-extractable Cd into the residual fraction, caused by Cd 2+ bonding with crystal Fe 3 O 4 . The application of the two kinds of composites caused similar changes to both microbial communities. There was a slight decrease in indigenous microbial alpha diversity with the MBB aerobic application, while the total population number of bacteria was increased by 700%. Both the redundancy analysis and Mantel analyses indicated that pH and microbial biomass C contributed to the colonization of Bacillus sp. K1 with SBB under aerobic conditions, and with MBB under anerobic conditions, respectively. The research provides a new insight into interactive effects and investigates immobilization mechanisms involved of bacterial/biochar composites in anaerobic and aerobic soils.

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Section: Interactive Relationships Between the Composites And Indigenous Microorganismsmentioning

confidence: 99%

“…Bacillus sp. TZ5 loaded onto biochar successfully colonized in soil and decreased Cd accumulation in ryegrass (Ma et al, 2020). Pseudomonas sp.…”

Section: Introductionmentioning

confidence: 99%

Effects of magnetic biochar-microbe composite on Cd remediation and microbial responses in paddy soil

Wang

Chen

et al. 2021

Journal of Hazardous Materials

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“…Second, considering that microbial cells are rich in various oxygen‐ and nitrogen‐containing functional groups, including carbonyl, hydroxyl and amine, several studies have used microorganism‐biochar composites for soil metal immobilization. Heavy metals and metalloids, such as Cu, As and Cd, can be immobilized via surface complexation (Ma et al, 2020; Tu et al, 2020; Wang, Li, et al, 2021). Third, the phosphate released from the microorganisms can also immobilize soil metals via precipitation (Tu et al, 2020).…”

Section: Classification and Enhancement Mechanismsmentioning

confidence: 99%

Biochar composites: Emerging trends, field successes and sustainability implications

Wang

Tsang

et al. 2021

Soil Use and Management

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Engineered biochars are promising candidates in a wide range of environmental applications, including soil fertility improvement, contaminant immobilization, wastewater treatment and in situ carbon sequestration. This review provides a systematic classification of these novel biochar composites and identifies the promising future trends in composite research and application. It is proposed that metals, minerals, layered double hydroxides, carbonaceous nanomaterials and microorganisms enhance the performances of biochars via distinct mechanisms. In this review, four novel trends are identified and assessed critically. Firstly, facile synthesis methods, in particular ball milling and co‐pyrolysis, have emerged as popular composite fabrication strategies that are suitable for large‐scale applications. Secondly, biochar modification with green materials, such as natural clay minerals and microorganisms, align well with the on‐going green and sustainable remediation (GSR) movement. Furthermore, new applications in soil health improvement and climate change mitigation support the realization of United Nation's Sustainable Development Goals (SDGs). Finally, the importance of field studies is getting more attention, since evidence of field success is critically needed before large‐scale applications.

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“…Industrial effluents are mainly composed by environmental relevance metals (ERM) among others metalloids and organic contaminants that inflicted serious damage on ecosystems [3,4].Environmental relevance metals' pollution is a serious concern due to the negative impact at even very small concentrations [5]. It is a direct consequence of processes as tannery [6], electroplating [7], dyeing or mining [8], and also of agriculture, sewage sludge [9] or waste treatment plants [10]. Certain industrial activities such as electroplating, mining, and metal-processing operations have been increasing in the last decades according to the improvement needs of specific characteristics in metallic products, such as oxidation resistance, conductivity, hardness, brightness, thermal and mechanical resistance among others.…”

Section: Introductionmentioning

confidence: 99%

Copper Removal Mediated by Pseudomonas veronii 2E in Batch and Continuous Reactors

Busnelli¹,

Vullo²

2022

J. sustain. dev. energy water environ. syst.

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Non treated Copper-loaded effluents disposed in water-bodies can cause severe damage in biota, so its removal before discharge is required. The aim of this work was to study the interaction of free and immobilised Pseudomonas veronii 2E with Copper, together with the design of biotreatment systems. Free cell sorption kinetics showed a 24 hmaximal retention of 0.330 mmol/g biomass, from 1 mM copper at 32 °C. Sorption isotherms revealed a specific maximal retention capacity 0.523 mmol/g. Optimal sorption achieved with biomass immobilised on vegetable sponge was 71.4% at 24 h. A reactor with recirculation and 3 continuous reactors in series were designed, obtaining final sorption of 78.3 and 56.0% at 9 and 1 days respectively. Copper desorption using hydrochloric acid was evaluated in both reactors. This work presents alternatives of applicable biotreatments of copper-loaded effluents, characterized by a combination of metal removal and recovery with low cost.

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Bioremediation of cadmium polluted soil using a novel cadmium immobilizing plant growth promotion strain Bacillus sp. TZ5 loaded on biochar

Cited by 143 publications

References 53 publications

Effects of magnetic biochar-microbe composite on Cd remediation and microbial responses in paddy soil

Effects of magnetic biochar-microbe composite on Cd remediation and microbial responses in paddy soil

Biochar composites: Emerging trends, field successes and sustainability implications

Copper Removal Mediated by Pseudomonas veronii 2E in Batch and Continuous Reactors

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