Optimal Removal of Heavy Metals From Leachate Contaminated Soil Using Bioaugmentation Process

Emenike, C. U.; Liew, Winney; Fahmi, Mohd; Jalil, Kamilah N.; Pariathamby, Agamuthu; Hamid, Fauziah Shahul

doi:10.1002/clen.201500802

Cited by 8 publications

(2 citation statements)

References 28 publications

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“…A study on removal of extractable metals such as Pb, Cu, and Al through bioaugmentation conducted with inocula of bacterial species isolated from leachate-contaminated soil has shown that the efficiency of metal removal was significantly lower when all isolated microbes were used than when only three species were used ( Lysinibacillus sp., Bacillus sp., and Rhodococcus sp.) [ 51 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of bioaugmentation on digestate metal concentrations in anaerobic digestion of sewage sludge

et al. 2020

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This study examined the influence of bioaugmentation on metal concentrations (aluminum, cadmium, chromium, cobalt, copper, iron, lead, manganese, molybdenum, nickel and zinc) in anaerobically digested sewage sludge. To improve the digestion efficiency, bioaugmentation with a mixture of wild-living Archaea and Bacteria (MAB) from Yellowstone National Park, USA, was used. The total concentration of all metals was higher in the digestate than in the feedstock. During anaerobic digestion, the percent increase in the concentration of most of metals was slightly higher in the bioaugmented runs than in the un-augmented runs, but these differences were not statistically significant. However, the percent increase in cadmium and cobalt concentration was significantly higher in the bioaugmented runs than in the un-augmented runs. At MAB doses of 9 and 13% v/v, cadmium concentration in the digestate was 211 and 308% higher than in the feedstock, respectively, and cobalt concentration was 138 and 165%, respectively. Bioaugmentation increased over 4 times the percentage of Pseudomonas sp. in the biomass that are able to efficiently accumulate metals by both extracellular adsorption and intracellular uptake. Biogas production was not affected by the increased metal concentrations. In conclusion, bioaugmentation increased the concentration of metals in dry sludge, which means that it could potentially have negative effects on the environment.

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Section: Resultsmentioning

confidence: 99%

Effect of bioaugmentation on digestate metal concentrations in anaerobic digestion of sewage sludge

et al. 2020

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“…There are bacterial strains with no IAA and siderospores production ability, and no ACC deaminase activity, which have enhanced metal uptake and accumulation in plant organs. Bioremediation technologies are necessary for the detoxification of metal-contaminants in polluted environments (Emenike et al, 2018a,b), to prevent their toxic effects on the environment and living organisms.…”

Section: Microbial Remediation Of Environmental Pollutionmentioning

confidence: 99%

Perspectives of Microbial Inoculation for Sustainable Development and Environmental Management

et al. 2018

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How to sustainably feed a growing global population is a question still without an answer. Particularly farmers, to increase production, tend to apply more fertilizers and pesticides, a trend especially predominant in developing countries. Another challenge is that industrialization and other human activities produce pollutants, which accumulate in soils or aquatic environments, contaminating them. Not only is human well-being at risk, but also environmental health. Currently, recycling, land-filling, incineration and pyrolysis are being used to reduce the concentration of toxic pollutants from contaminated sites, but too have adverse effects on the environment, producing even more resistant and highly toxic intermediate compounds. Moreover, these methods are expensive, and are difficult to execute for soil, water, and air decontamination. Alternatively, green technologies are currently being developed to degrade toxic pollutants. This review provides an overview of current research on microbial inoculation as a way to either replace or reduce the use of agrochemicals and clean environments heavily affected by pollution. Microorganism-based inoculants that enhance nutrient uptake, promote crop growth, or protect plants from pests and diseases can replace agrochemicals in food production. Several examples of how biofertilizers and biopesticides enhance crop production are discussed. Plant roots can be colonized by a variety of favorable species and genera that promote plant growth. Microbial interventions can also be used to clean contaminated sites from accumulated pesticides, heavy metals, polyaromatic hydrocarbons, and other industrial effluents. The potential of and key processes used by microorganisms for sustainable development and environmental management are discussed in this review, followed by their future prospects.

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Bioremediation: An Eco-friendly Sustainable Technology for Environmental Management

Azubuike

Chikere

Okpokwasili

2019

Bioremediation of Industrial Waste for Environmental Safety

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Optimal Removal of Heavy Metals From Leachate Contaminated Soil Using Bioaugmentation Process

Cited by 8 publications

References 28 publications

Effect of bioaugmentation on digestate metal concentrations in anaerobic digestion of sewage sludge

Effect of bioaugmentation on digestate metal concentrations in anaerobic digestion of sewage sludge

Perspectives of Microbial Inoculation for Sustainable Development and Environmental Management

Bioremediation: An Eco-friendly Sustainable Technology for Environmental Management

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