Enhanced copper removal from contaminated kaolinite soil by electrokinetic process using compost reactive filter media

Ghobadi, Romina; Altaee, Ali; Zhou, John L.; McLean, Peter; Ganbat, Namuun; Li, Donghao

doi:10.1016/j.jhazmat.2020.123891

Cited by 26 publications

(2 citation statements)

References 52 publications

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“…The horizontal transfer of copper resistance genes across species ( Fig. 3c, d ) may help their host to cope with soil-specific copper pollution 58 , 59 . Concurrently, vertical accumulation of the genes within single species would reflect its influence on the enrichment patterns: in the Freshwater biome with higher fluidity, more flagellum-related genes would benefit their hosts by conferring greater mobility.…”

Section: Discussionmentioning

confidence: 99%

Microbiome-based enrichment pattern mining has enabled a deeper understanding of the biome–species–function relationship

2023

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Microbes live in diverse habitats (i.e. biomes), yet their species and genes were biome-specific, forming enrichment patterns. These enrichment patterns have mirrored the biome–species–function relationship, which is shaped by ecological and evolutionary principles. However, a grand picture of these enrichment patterns, as well as the roles of external and internal factors in driving these enrichment patterns, remain largely unexamined. In this work, we have examined the enrichment patterns based on 1705 microbiome samples from four representative biomes (Engineered, Gut, Freshwater, and Soil). Moreover, an “enrichment sphere” model was constructed to elucidate the regulatory principles behind these patterns. The driving factors for this model were revealed based on two case studies: (1) The copper-resistance genes were enriched in Soil biomes, owing to the copper contamination and horizontal gene transfer. (2) The flagellum-related genes were enriched in the Freshwater biome, due to high fluidity and vertical gene accumulation. Furthermore, this enrichment sphere model has valuable applications, such as in biome identification for metagenome samples, and in guiding 3D structure modeling of proteins. In summary, the enrichment sphere model aims towards creating a bluebook of the biome–species–function relationships and be applied in many fields.

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Section: Discussionmentioning

confidence: 99%

Microbiome-based enrichment pattern mining has enabled a deeper understanding of the biome–species–function relationship

2023

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“…Effects of different parameters of geopolymers such ratios of mixing (%), molarity, temperature, curing time, alkaline activator ratio, and water/cement ratio on the geotechnical properties of soil have been discussed. Ghobadi et al (2021) used electrokinetic remediation technology integrated with compost as recyclable reactive filter media for removal of copper from kaolinite soil The compost placed near the cathode served as an adsorbent to bind copper ions while buffering the advancement of the alkaline front in soil. The total copper removal rate increased from 1.03% in EK to 45.65% in EK with 100% of compost under an electric gradient of 10 V.…”

Section: Introductionmentioning

confidence: 99%

Influence of remediation by electrokinetic on the chemical and geotechnical properties of clayey soil contaminated by copper sulfate

Karkush,

Ali,

Bakr

2023

Earth sci. res. j.

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The enhanced electrokinetic (EK) technique is an innovative approach and increasingly used in remediation of the fine-grained texture soils contaminated with different types of contaminant. In this study, the EK is enhanced by adding an intermediate compartment and using purging solutions at the electrode’s compartments. The natural clayey soil samples were obtained from Al-Ahadab oil field and artificially contaminated with two ratios of copper sulfate (66666.67 and 26666.67 mg/kg). The feasibility of using EK technique was evaluated by the efficiency of extracting copper from soil and the magnitude of recovery in the geotechnical properties of soil. The duration of remediation was continued for about 240-250 hours depending either on the continuity of electroosmosis flow or reach a constant rate of electrical current. The removal efficiency of copper from contaminated soil samples was ranged from 98.4% to 99.6%. The EK remediation technique proved a marginal impact on the specific gravity and Atterberg’s limits, but it has a significant effect on the shear strength parameters and compressibility of soil. Furthermore, the EK technique can be considered an efficient method for removing the low and high concentrations of copper sulfate from clayey soil of low permeability.

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Coupling electrokinetic remediation with flushing using green tea synthesized nano zero-valent iron/nickel to remediate Cr (VI)

Zhu,

Yang,

Ren

et al. 2023

Environ Geochem Health

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Enhanced copper removal from contaminated kaolinite soil by electrokinetic process using compost reactive filter media

Cited by 26 publications

References 52 publications

Microbiome-based enrichment pattern mining has enabled a deeper understanding of the biome–species–function relationship

Microbiome-based enrichment pattern mining has enabled a deeper understanding of the biome–species–function relationship

Influence of remediation by electrokinetic on the chemical and geotechnical properties of clayey soil contaminated by copper sulfate

Coupling electrokinetic remediation with flushing using green tea synthesized nano zero-valent iron/nickel to remediate Cr (VI)

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