NanoRefinery of carbonaceous nanomaterials: Complementing dairy manure gasification and their applications in cellular imaging and heavy metal sensing

Plácido, Jersson; Bustamante-López, S.; Meissner, Kenith E.; Kelly, Diane; Kelly, S. L.

doi:10.1016/j.scitotenv.2019.06.390

Cited by 5 publications

(6 citation statements)

References 41 publications

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“…This kind of structure maintains the surface chemical Processes 2021, 9, 1095 2 of 16 groups (aromatics and negative charge groups), the mineral compounds and give it biological resistance [11,12]. Those characteristics make the biochar a good precursor for more add-value carbonaceous materials, like C-Dots [12][13][14]. Recently, the interest on synthesis strategies for nanomaterials is growing, using waste biomass and biochar [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Ecotoxicity Evaluation of Biochar-Derived Carbon Dots from Spruce Tree, Purple Moor-Grass and African Oil Palm

et al. 2021

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Biochar-derived C-Dots from Picea, Molinia caerulea and Elaeis guineensis were synthesized through a hydrothermal process, and their physicochemical and optical characteristics and environmental effects were compared. These C-Dots were characterized by techniques such as Attenuated Total Reflection–Fourier Transform Infrared (ATR-FTIR), UV-Vis spectrophotometry, fluorescence spectroscopy, dynamic light scattering (DLS), Z potential, and High-Resolution Transmission Electronical Microscopy (HR-TEM). The ecotoxicity tests were performed using the Microtox™ test, making this study one of the few that use this method. The C-Dots from Molinia caerulea showed the best quantum yield (QY) of 8.39% and moderate ecotoxicity, while Elaeis guineensis has the lowest QY (2.31%) but with zero toxicity. Furthermore, the C-Dots from Picea presents good optical properties but showed high toxicity and limits its use. Finally, all C-Dots showed functional groups that could be biofunctionalized with biomolecules, especially C-Dots from Molinia caerulea and Elaeis guineensis show potential for use in the development of optical biosensors.

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Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Ecotoxicity Evaluation of Biochar-Derived Carbon Dots from Spruce Tree, Purple Moor-Grass and African Oil Palm

et al. 2021

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“…where carbonaceous compounds were released into the liquid phase producing a reduction of carbonaceous linkages signals (Placido et al 2019a;2019b). Additionally, it should be noted that bands at 3350, 1350 and 1250 cm −1 , ascribed to O-containing groups, exhibited enhanced intensity.…”

Section: Characterisation Of Wood-chip Biochar Derived Sorbentsmentioning

confidence: 99%

“…The high REA of KWB indicates its potential for removing AB 161 from wastewaters. Different from activated carbon, WB and KWB are by-products from waste-to-energy processes and advanced material production where chemicals and carbonaceous nanomaterials are synthesised (Das et al 2018;Oliveira et al 2017;Placido et al 2019a). The use of wastes makes biochar from these processes a superior economic and environmentally friendly option than activated carbons.…”

Section: Dye Removal Performancementioning

confidence: 99%

Degradation of a Leather-Dye by the Combination of Depolymerised Wood-Chip Biochar Adsorption and Solid-State Fermentation with Trametes Villosa SCS-10

Ortiz-Monsalve

Gutterres

Valente

et al. 2020

Preprint

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Adsorption into biochar-derived materials and mycoremediation are promising technologies for removing dyes from solid and liquid matrices. This study presents a combined treatment with adsorption into wood-chip biochar and mycodegradation under solid-state ermentation by Trametes villosa for removing the leather-dye Acid Blue 161. In the first stage, untreated wood-chip biochar, NaOH-depolymerised-biochar and KMnO 4 -depolymerised-biochar were assessed for their dye removal efficiency by adsorption. KMnO 4 -depolymerised-biochar exhibited the highest adsorption (85.1 ± 1.9%) after 24 h of contact. KMnO 4 -depolymerisation modified some physical and chemical properties on the untreated wood-chip biochar, increasing the surface area (50.4 m 2 g –1 ), pore size (1.9 nm), and resence of surface functional groups. Response Surface Methodology coupled with a Box-Behnken design was used to optimise the AB 161 adsorption into the KMnO 4 -depolymerised-biochar. The optimised conditions, pH 3.0, dye concentration 100 mg L –1 and sorbent dosage 2 g L –1 , led to a higher dye removal efficiency by adsorption (91.9 ± 1.0%). In a second stage, the wood-chip biochar supplemented with nutrients (1% malt extract and 0.5% peptone) was employed as a solid matrix for growing T. villosa and regenerating the dye-saturated material. After 15 days, T. villosa was able to grow (86.8 ± 0.8%), produce Laccase activity (621.9 ± 62.3 U L –1 ), and biodegrade (91.4 ± 1.3%) the dye adsorbed into the KMnO 4 -depolymerised-biochar. Finally, the mycoregenerated was reutilised in a new cycle of adsorption reaching 79.5 ± 2.0% of dye removal efficiency by adsorption. This study revealed the potential of the combined treatment and is an initial assessment for developing commercial alternatives for treating leather industry wastewaters.

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“…The high REA of KWB indicates its potential for removing AB 161 from wastewaters. Different from activated carbon, WB and KWB are byproducts from waste-to-energy processes and advanced material production where chemicals and carbonaceous nanomaterials are synthesised (Das et al 2018;Oliveira et al 2017;Placido et al 2019a). The use of wastes makes biochar from these processes a superior economic and environmentally friendly option than activated carbons.…”

Section: Dye Removal Performancementioning

confidence: 99%

“…Biochar properties include abundant surface functional groups, high surface area, porosity and stability (Braghiroli et al 2018;Dai et al 2019;Oliveira et al 2017). Biochar chemical depolymerisation has been used for the production of chemicals and advanced nanomaterials such as carbon dots, humic substances and nanosilica (Placido and Capareda 2015;Placido et al 2019a). Although the main reason for the chemical depolymerisation is the production of advanced nanomaterials, the chemical reaction creates different modifications in the depolymerised biochar structure that improves the adsorption capacity by modifying the surface area, porosity, pH, and presence of functional groups on its surface (Braghiroli et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Degradation of a leather-dye by the combination of depolymerised wood-chip biochar adsorption and solid-state fermentation with Trametes villosa SCS-10

Ortiz-Monsalve

Gutterres

Valente

et al. 2020

Bioresour. Bioprocess.

Self Cite

View full text Add to dashboard Cite

Adsorption into biochar-derived materials and mycoremediation are promising technologies for removing dyes from solid and liquid matrices. This study presents a combined treatment with adsorption into wood-chip biochar and mycodegradation under solid-state fermentation by Trametes villosa for removing the leather-dye Acid Blue 161. In the first stage, untreated wood-chip biochar, NaOH–depolymerised biochar and KMnO4–depolymerised biochar were assessed for their dye removal efficiency by adsorption. KMnO4–depolymerised biochar exhibited the highest adsorption (85.1 ± 1.9%) after 24 h of contact. KMnO4–depolymerisation modified some physical and chemical properties on the untreated wood-chip biochar, increasing the surface area (50.4 m2 g–1), pore size (1.9 nm), and presence of surface functional groups. Response surface methodology coupled with a Box–Behnken design was used to optimise the AB161 adsorption into the KMnO4–depolymerised biochar. The optimised conditions, pH 3.0, dye concentration 100 mg L–1 and sorbent dosage 2 g L–1, led to a higher dye removal efficiency by adsorption (91.9 ± 1.0%). In a second stage, the wood-chip biochar supplemented with nutrients (1% malt extract and 0.5% peptone) was employed as a solid matrix for growing T. villosa and regenerating the dye-saturated material. After 15 days, T. villosa was able to grow (86.8 ± 0.8%), exhibit laccase activity (621.9 ± 62.3 U L–1), and biodegrade (91.4 ± 1.3%) the dye adsorbed into the KMnO4–depolymerised biochar. Finally, the mycoregenerated biochar was reutilised in a new cycle of adsorption reaching 79.5 ± 2.0% of dye removal efficiency by adsorption. This study revealed the potential of the combined treatment and is an initial assessment for developing commercial alternatives for treating leather industry wastewaters.

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NanoRefinery of carbonaceous nanomaterials: Complementing dairy manure gasification and their applications in cellular imaging and heavy metal sensing

Abstract: nanomaterials: Complementing dairy manure gasification and their applications in cellular imaging and heavy metal sensing, Science of the Total Environment,

Cited by 5 publications

References 41 publications

Synthesis, Characterization and Ecotoxicity Evaluation of Biochar-Derived Carbon Dots from Spruce Tree, Purple Moor-Grass and African Oil Palm

Synthesis, Characterization and Ecotoxicity Evaluation of Biochar-Derived Carbon Dots from Spruce Tree, Purple Moor-Grass and African Oil Palm

Degradation of a Leather-Dye by the Combination of Depolymerised Wood-Chip Biochar Adsorption and Solid-State Fermentation with Trametes Villosa SCS-10

Degradation of a leather-dye by the combination of depolymerised wood-chip biochar adsorption and solid-state fermentation with Trametes villosa SCS-10

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