A review of the application of adsorbents for landfill leachate treatment: Focus on magnetic adsorption

Reshadi, Mir Amir Mohammad; Bazargan, Alireza; McKay, Gordon

doi:10.1016/j.scitotenv.2020.138863

Cited by 133 publications

(38 citation statements)

References 170 publications

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“…Coagulation using Ferric chloride followed by filteration and reverse osmosis has been shown to completely remove organic pollutants like Di-(2-ethylhexyl) phthalate (DEHP) and Bisphenol A [26]. Among the latest treatment technologies, leachate treatment using magnetic adsorbents and nanomaterials are of special interests as they have high efficiency in removal of organic acids and heavy metals [27,28]. But the use of these techniques has environmental impacts and further research need to be done with green and environmental friendly processes.…”

Section: Investigation Of Hazardous Componentsmentioning

confidence: 99%

Hazardous Components of Landfill Leachates and Its Bioremediation

Salam¹,

Nilza²

2021

Soil Contamination - Threats and Sustainable Solutions

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Landfill leachates contain both dissolved and suspended material and may pose a threat to the environment because of the toxic substances that it carries and contaminates surface water and groundwater. They are composed of several different categories of components out of which many of them are recalcitrant and highly toxic. Major components of landfill leachates are dissolved organic compounds, inorganic macro compounds, heavy metals such as copper, lead, cadmium, chromium, nickel etc. and xenobiotic compounds such as polychlorinated biphenyls. Complex organic compounds which are released from industrial effluents like perfluorooctanoic acid and benzothiazole are also common in many of the landfill leachates. Biological treatment is a low cost effective method for the treatment of landfill leachates which can act as an accelerator for further treatment by either chemical or physical method. Improved strategies have been developed in the biological treatment of leachates which shows the efficiency of the system. But, as leachate characteristics vary depending on the rainfall and other environmental factors, it is important to first thoroughly analyze the physical and chemical properties of the landfill under study. A combined effort involving proper analysis of the leachate components, monitoring leachate flow, risk assessment, and treatment of the leachate before its release is required to efficiently control its impact to the environment.

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Section: Investigation Of Hazardous Componentsmentioning

confidence: 99%

Hazardous Components of Landfill Leachates and Its Bioremediation

Salam¹,

Nilza²

2021

Soil Contamination - Threats and Sustainable Solutions

View full text Add to dashboard Cite

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“…Examples, advantages, and disadvantages of the various adsorbents are a topic of multiple reviews. 57 , 62 , 63 Those adsorbents can be categorized in the following groups: carbonaceous, mineral, and polymeric materials and (nano)composites and nanomaterials (nanoparticles and nanotubes). The examples of such materials are mesoporous and activated carbons, clays and zeolites, ion-exchange membranes, carbon nanotubes, and metallic nanoparticles and their composites, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…The examples of such materials are mesoporous and activated carbons, clays and zeolites, ion-exchange membranes, carbon nanotubes, and metallic nanoparticles and their composites, respectively. 57 , 62 , 63 The MCs synthesized in this article will be benchmarked with state-of-art MC, synthesized using the lignin–formaldehyde approach (soft templated with Pluronic F127), 42 and commercial activated carbon, to evaluate their performance as HA adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Development of Lignin-Based Mesoporous Carbons for the Adsorption of Humic Acid

et al. 2021

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There is an increasing urge to make the transition toward biobased materials. Lignin, originating from lignocellulosic biomass, can be potentially valorized as humic acid (HA) adsorbents via lignin-based mesoporous carbon (MC). In this work, these materials were synthesized for the first time starting from modified lignin as the carbon precursor, using the soft-template methodology. The use of a novel synthetic approach, Claisen rearrangement of propargylated lignin, and a variety of surfactant templates (Pluronic, Kraton, and Solsperse) have been demonstrated to tune the properties of the resulting MCs. The obtained materials showed tunable properties (BET surface area: 95–367 m 2 /g, pore size: 3.3–36.6 nm, V BJH pore volume: 0.05–0.33 m 3 /g, and carbon and oxygen content: 55.5–91.1 and 3.0–12.2%, respectively) and good performance in terms of one of the highest HA adsorption capacities reported for carbon adsorbents (up to 175 mg/g).

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“…This results from the properties of the magnetism, which simplifies post-processing. In addition, magnetic recycling can help prevent nano-adsorbents from occurring in the natural environment, and mitigate future hazards [25].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Multiwall Carbon Nanotube Decorated with Novel Functionalities: Synthesis and Application as Adsorbents for Lead Removal from Aqueous Medium

et al. 2020

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Water pollution is one of the major challenges facing modern society because of industrial development and urban growth. This study is directed towards assessing the use of multiwall carbon nanotube, after derivatization and magnetization, as a new and renewable absorbent, to remove toxic metal ions from waste streams. The adsorbents were prepared by, first oxidation of multiwall carbon nanotube, then derivatizing the oxidized product with hydroxyl amine, hydrazine and amino acid. The adsorbents were characterized by various techniques. The adsorption efficiency of the multiwall carbon nanotube adsorbents toward Pb(II) was investigated. The effect of adsorbent’s dose, temperature, pH, and time on the adsorption efficiency were studied and the adsorption parameters that gave the highest efficiency were determined. The derivatives have unique coordination sites that included amine, hydroxyl, and carboxyl groups, which are excellent chelating agents for metal ions. The thermodynamic and kinetic results analysis results indicated spontaneous adsorption of Pb(II) by the multiwall carbon nanotube adsorbents at room temperature. The adsorption process followed pseudo-second-order and Langmuir isotherm model. The adsorbents were regenerated using 0.1 N HCl.

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A review of the application of adsorbents for landfill leachate treatment: Focus on magnetic adsorption

Cited by 133 publications

References 170 publications

Hazardous Components of Landfill Leachates and Its Bioremediation

Hazardous Components of Landfill Leachates and Its Bioremediation

Development of Lignin-Based Mesoporous Carbons for the Adsorption of Humic Acid

Magnetic Multiwall Carbon Nanotube Decorated with Novel Functionalities: Synthesis and Application as Adsorbents for Lead Removal from Aqueous Medium

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