Heavy metal removal by biomass-derived carbon nanotubes as a greener environmental remediation: A comprehensive review

Hoang, Anh Tuan; Nižetić, Sandro; Cheng, Chin Kui; Luque, Rafael; Thomas, Sabu; Banh, Tien Long; Pham, Van Viet; Nguyen, Xuan Phuong

doi:10.1016/j.chemosphere.2021.131959

Cited by 137 publications

(26 citation statements)

References 291 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Industry-generated effluent is released into the environment, primarily in watercourses. Common heavy metals found in wastewater includes Pb, Cd, Cu Cr, Hg, and As have been proved to be highly harmful [73]. Heavy metals like Pb, has been reported as a ubiquitous environmental pollutant, capable to causing physiological, morphological, and biochemical damages in plant tissue; This may perhaps be as a result of the strong binding affinity of these heavy metals with biomolecules [74].…”

Section: Heavy Metalsmentioning

confidence: 99%

Acid modification of lignocellulosic derived material for dye and heavy metals removal: A review

Akindolie

Choi

2022

Environmental Engineering Research

View full text Add to dashboard Cite

Researchers have tested Lignocellulose derived material (LDMs) from different sources ranging from agricultural to wood in order to facilitate the adsorption of chemical contaminants, such as heavy metals and dyes from water bodies, to eradicate water contamination. However, different methods have been employed to modify the nature of the LDMs to enable their suitability for contaminants removal. Among all these methods, acid modification of LDMs has gained a lot of attention. This review focused on the use of acid modification LDMs for the removal of anionic and cationic dyes, and heavy metals in water. The characteracerization techniques employed in studying the morphology and functional groups of the LDMs were discussed. The adsorption dynamics and mechanisms of reported studies were extensively summarized. The reported adsorption capacity of unmodified LDMs in the available liturature is in the range of 4.44–156.00 mg/g while for the modified is between 80.05–250.01 mg/g for dye removal. The adsorption capacity of modified LDMs reported was 1.60–18.03 times higher than the unmodified because of additional functional groups such as -SO<sub>3</sub> from sulphuric acid modification. Finally, the future outlook and challenges of this method were pulled together.

show abstract

Section: Heavy Metalsmentioning

confidence: 99%

Acid modification of lignocellulosic derived material for dye and heavy metals removal: A review

Akindolie

Choi

2022

Environmental Engineering Research

View full text Add to dashboard Cite

show abstract

“…However, activated carbon has been limited by the high cost and the complicated regeneration processes. To tackle the aforementioned limitations, carbon-based nanomaterials, such as carbon nanotubes [ 23 ], graphene oxide (GO) [ 24 ], and reduced graphene oxide (rGO) [ 25 ], have been proposed.…”

Section: Introductionmentioning

confidence: 99%

Cationic Pollutant Removal from Aqueous Solution Using Reduced Graphene Oxide

et al. 2022

View full text Add to dashboard Cite

Reduced graphene oxide (rGO) is one of the most well-known graphene derivatives, which, due to its outstanding physical and chemical properties as well as its oxygen content, has been used for wastewater treatment technologies. Particularly, extra functionalized rGO is widely preferred for treating wastewater containing dyes or heavy metals. Nevertheless, the use of non-extra functionalized (pristine) rGO for the removal of cationic pollutants is not explored in detail or is ambiguous. Herein, pristine rGO—prepared by an eco-friendly protocol—is used for the removal of cationic pollutants from water, i.e., methylene blue (MB) and mercury-(II) (Hg-(II)). This work includes the eco-friendly synthesis process and related spectroscopical and morphological characterization. Most importantly, the investigated rGO shows an adsorption capacity of 121.95 mg g−1 for MB and 109.49 mg g−1 for Hg (II) at 298 K. A record adsorption time of 30 min was found for MB and 20 min for Hg (II) with an efficiency of about 89% and 73%, respectively. The capture of tested cationic pollutants on rGO exhibits a mixed physisorption–chemisorption process. The present work, therefore, presents new findings for cationic pollutant adsorbent materials based on oxidized graphenes, providing a new perspective for removing MB molecules and Hg(II) ions.

show abstract

“…Currently, the world population requires greater access to clean and safe water, and this need will increase rapidly in the coming years. It is in this context, that research on various raw materials is necessary to obtain novel biosorbents that allow for the removal of heavy metals in a more versatile and less expensive way [ 1 , 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

Modified Polymeric Biosorbents from Rumex acetosella for the Removal of Heavy Metals in Wastewater

et al. 2022

View full text Add to dashboard Cite

The contamination of water resources by effluents from various industries often contains heavy metals, which cause irreversible damage to the environment and health. The objective was to evaluate different biosorbents from the weed Rumex acetosella to remove metal cations in wastewater. Drying, grinding and sieving of the stems was carried out to obtain the biomass, retaining the fractions of 250 to 500 µm and 500 to 750 µm, which served to obtain the biosorbents in natura (unmodified), acidic, alkaline, and mixed. Proximal analysis, PZC, TOC, removal capacity, influence of pH, functional groups, thermal analysis, structural characteristics, adsorption isotherms, and kinetic study were evaluated. The 250 µm mixed treatment was the one that presented the highest removal percentages, mainly due to the OH, NH, -C-H, COOH, and C-O functional groups achieving the removal of up to 96.14% of lead, 36.30% of zinc, 34.10% of cadmium and 32.50% of arsenic. For contact times of 120 min and an optimum pH of 5.0, a loss of cellulose mass of 59% at 328 °C and a change in the surface of the material were also observed, which allowed for obtaining a topography with greater chelating capacity, and the Langmuir and pseudo-second order models were better fitted to the adsorption data. The new biosorbents could be used in wastewater treatment economically and efficiently.

show abstract

Heavy metal removal by biomass-derived carbon nanotubes as a greener environmental remediation: A comprehensive review

Cited by 137 publications

References 291 publications

Acid modification of lignocellulosic derived material for dye and heavy metals removal: A review

Acid modification of lignocellulosic derived material for dye and heavy metals removal: A review

Cationic Pollutant Removal from Aqueous Solution Using Reduced Graphene Oxide

Modified Polymeric Biosorbents from Rumex acetosella for the Removal of Heavy Metals in Wastewater

Contact Info

Product

Resources

About