Green iron oxide-modified biochar for methylene blue removal from aqueous solutions

Samaraweera, Hasara; Andrena, Deleon; Carter, Kayla A.; Felder, Tate; Nawalage, Samadhi; Chui, Iwei; Pérez, Felio; Khan, Afzal; Mlsna, Todd

doi:10.1016/j.gsd.2023.100945

Cited by 18 publications

(2 citation statements)

References 49 publications

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“…Green iron oxide-loaded Douglas fir biochar 640 - [a] - [a] - [a] 0.13 [41] Pristine Douglas fir biochar 248 - [a] - [a] - [a] 0.07 [41] [a] Not available. [b] micropore surface area.…”

Section: Modelsmentioning

confidence: 99%

Easy Recovered Magnetic Bark Biochar for Methylene Blue Removal: Preparation Characterization and Adsorption Parameters Study

Zeghioud,

Mouhamadou

2023

ChemistrySelect

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In this study, two types of magnetic biochars (Magnetic Bark Biochar with protocol 1 (MBB1) and Magnetic Bark Biochar with protocol 2 (MBB2)) were synthesized using pristine poplar bark biochar (PBB) via co‐precipitation. The two prepared magnetic biochars were tested to investigate the aqueous methylene blue (MB) removal performances. MB dye was used as a common pollutant for biochar quality evaluation and the obtained performance in this work was compared with literature. Different analysis techniques such as Scanning Electron Microscope (SEM), Energy Dispersive X‐ray Spectroscopy (EDS), Brunauer‐Emmett‐Teller (BET), porosimetry, Raman spectrometry and Fourier Transform Infrared spectroscopy (FTIR) were used to characterize the obtained materials. Biochars have a microporous structure with an average pore diameter of less than 0.26 nm. Magnetization of bark biochar leads to a loss in specific surface area (from 263.45 m2/g for PBB to 39.22 and 73.02 m2/g for MBB1 and MBB2, respectively) and an increase in total porosity by 85.11 and 12.72 %, respectively. MB adsorption process on MBB1 and MBB2 was best described by the pseudo‐first‐order kinetic model (R2=0.98) and by pseudo‐second‐order kinetic model for PBB (R2=0.9). The Langmuir monolayer adsorption and Marczewski‐jaroniec (M‐J) models presented the best fit for both PBB and MBB2 showing favourable adsorption process. Based on maximum adsorption capacity (qm: 32.98 mg/g) and the highest R2 value (0.96), MBB1 adsorption isotherm was well described by Langmuir model. Isotherm study revealed that MBB2 has the highest adsorption capacity of 49.02 mg/g followed by PBB with 37.85 mg/g. MB‐biochar interactions are dominated by chemisorption regarding the PBB and by physisorption concerning the magnetic biochars.

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“…Green iron oxide-loaded Douglas fir biochar 640 - [a] - [a] - [a] 0.13 [41] Pristine Douglas fir biochar 248 - [a] - [a] - [a] 0.07 [41] [a] Not available. [b] micropore surface area.…”

Section: Modelsmentioning

confidence: 99%

Easy Recovered Magnetic Bark Biochar for Methylene Blue Removal: Preparation Characterization and Adsorption Parameters Study

Zeghioud,

Mouhamadou

2023

ChemistrySelect

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“…This is confirmed by research [ 100 ] that confirms the increased adsorption of MB on KOH-modified biochar. However, Samaraweera et al, 2023 [ 101 ] indicate that Douglas fir biochar modified with Fe 3 O 4 showed a higher sorption capacity than raw biochar. These authors conclude that Fe 3 O 4 nanoparticles facilitate the removal of large MB particles from the solution, and the large specific surface area (240 m 2 ·g −1 ) favors physisorption.…”

Section: Resultsmentioning

confidence: 99%

Properties and Possibilities of Using Biochar Composites Made on the Basis of Biomass and Waste Residues Ferryferrohydrosol Sorbent

Wystalska,

Kowalczyk,

Kamizela

et al. 2024

Materials

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Biochar enriched with metals has an increased potential for sorption of organic and inorganic pollutants. The aim of the research was to identify the possibility of using biochar composites produced on the basis of waste plant biomass and waste FFH (ferryferrohydrosol) containing iron atoms, after CO2 capture. The composites were produced in a one-stage or two-stage pyrolysis process. Their selected properties were determined as follows: pH, ash content, C, H, N, O, specific surface area, microstructure and the presence of surface functional groups. The produced biochar and composites had different properties resulting from the production method and the additive used. The results of experiments on the removal of methylene blue (MB) from solutions allowed us to rank the adsorbents used according to the maximum dye removal value achieved as follows: BC1 (94.99%), B (84.61%), BC2 (84.09%), BC3 (83.23%) and BC4 (83.23%). In terms of maximum amoxicillin removal efficiency, the ranking is as follows: BC1 (55.49%), BC3 (23.51%), BC2 (18.13%), B (13.50%) and BC4 (5.98%). The maximum efficiency of diclofenac removal was demonstrated by adsorbents BC1 (98.71), BC3 (87.08%), BC4 (74.20%), B (36.70%) and BC2 (30.40%). The most effective removal of metals Zn, Pb and Cd from the solution was demonstrated by BC1 and BC3 composites. The final concentration of the tested metals after sorption using these composites was less than 1% of the initial concentration. The highest increase in biomass on prepared substrates was recorded for the BC5 composite. It was higher by 90% and 54% (for doses of 30 g and 15 g, respectively) in relation to the biomass growth in the soil without additives. The BC1 composite can be used in pollutant sorption processes. However, BC5 has great potential as a soil additive in crop yield and plant growth.

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Metal oxide nanobiochar materials to remediate heavy metal and dye pollution: a review

Akash,

Rameshwar,

Rajamohan

et al. 2024

Environ Chem Lett

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Green iron oxide-modified biochar for methylene blue removal from aqueous solutions

Cited by 18 publications

References 49 publications

Easy Recovered Magnetic Bark Biochar for Methylene Blue Removal: Preparation Characterization and Adsorption Parameters Study

Easy Recovered Magnetic Bark Biochar for Methylene Blue Removal: Preparation Characterization and Adsorption Parameters Study

Properties and Possibilities of Using Biochar Composites Made on the Basis of Biomass and Waste Residues Ferryferrohydrosol Sorbent

Metal oxide nanobiochar materials to remediate heavy metal and dye pollution: a review

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