Waste biomass gasification char derived activated carbon for pharmaceutical carbamazepine removal from water

To, Ming-Ho; Hui, Chi‐Wai; Lin, Carol Sze Ki; AI-Ansari, Tareq; Saleem, Junaid; Parthasarathy, Prakash; McKay, Gordon

doi:10.25082/reie.2019.01.005

Cited by 6 publications

(2 citation statements)

References 24 publications

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“…Usually, woodchips are the preferred feedstocks for char production, but also MSW [38], palm shells [58], and almond shells [34] were used. The studied pollutants are rather organic ones (micropollutants, dyes, etc.)…”

Section: Water Treatmentmentioning

confidence: 99%

“…Testing char in real wastewater showed that dissolved organic matter had a strong impact on adsorption due to the competition for active site and pore blockage, as this is generally observed with adsorption on AC. Similarly, To et al examined char from a commercial biomass gasification power plant in Indonesia in the removal of carbamazepine from ultrapure water [58]. The char was activated to increase the surface area using CO 2 at different conditions, and the highest BET surface area achieved was 711.5 m 2 g −1 .…”

Section: Organic Micropollutantsmentioning

confidence: 99%

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Innovative Pathways for the Valorization of Biomass Gasification Char: A Systematic Review

et al. 2023

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The thermochemical process of gasification is widely utilized for bioenergy production and is particularly attractive due to its high conversion efficiency. However, a gasification byproduct, known as char, is commonly treated as industrial waste despite its attractive qualities. Indeed, due to its high carbon content (up to 91%) and well-developed porosity (specific surface areas up to 1253 m2 g−1), gasification char could be considered a cost-effective substitute for activated carbon in various applications, such as catalysis and adsorption. However, its properties are highly dependent on the gasification parameters and the initial feedstock selected, and thus a careful characterization of the material is needed to find the most suitable applications. This review can act as a preliminary assessment of the gasification along with the expected char properties, aiding in the selection of the most appropriate valorization pathways. In particular, different application areas, their relation to the gasification process, and the char properties are extensively discussed.

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Section: Water Treatmentmentioning

confidence: 99%

Section: Organic Micropollutantsmentioning

confidence: 99%

Innovative Pathways for the Valorization of Biomass Gasification Char: A Systematic Review

et al. 2023

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Application of response surface methodology to optimize chromium (VI) removal from aqueous solution using pre‐treated sawdust

Sirusbakht,

Vafajoo,

McKay

et al. 2024

Env Prog and Sustain Energy

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Increased chromium usage in industrial applications as chromium III and chromium VI, include metal plating, steel alloys, leather processing, medical applications, and chromium dyeing operations, has resulted in water pollution by Cr (VI) ions, which being toxic and carcinogenic has developed into significant environmental and health problems. The purpose of this research is to remove Cr (VI) ions from synthetic wastewater utilising modified sawdust as an inexpensive adsorbent. Two modified sawdust samples were produced, one using sodium hydroxide and one using sulfuric acid. The experimentation, based on several batch systems, has been undertaken at 25–65°C with 0.5–1.5 g/L sawdust dosage. These conditions were applied to remove Cr (VI) ions at concentrations of 1–6 ppm at pH values from 3 to 10. The results have shown that adsorption onto sawdust followed an intraparticle diffusion mechanism with various rate parameters from 0.65 to 5.24 mg g−1 min, for treated and untreated sawdust. The distribution coefficient , enthalpy , thermodynamic standard free energy , and entropy were determined from a number of temperature studies. Kinetic studies showed that the pseudo‐second order model gave the optimum correlation to the experimental results. The Freundlich and Langmuir isotherms were applied to analyse the experimental equilibrium results. The optimised conditions for the adsorption process were obtained using the D‐optimal design method, and the maximum removal percentage of 100%, was determined at pH = 3, T = 25°C, adsorbent dosage = 1.5 g/L, and an initial Cr (VI) concentration = 5.72 ppm.

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Adsorption of Reactive Black 5 and Basic Blue 12 using biochar from gasification residues: Batch tests and fixed-bed breakthrough predictions for wastewater treatment

Nascimento

Araújo

Nascimento

et al. 2021

Bioresource Technology Reports

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Waste biomass gasification char derived activated carbon for pharmaceutical carbamazepine removal from water

Cited by 6 publications

References 24 publications

Innovative Pathways for the Valorization of Biomass Gasification Char: A Systematic Review

Innovative Pathways for the Valorization of Biomass Gasification Char: A Systematic Review

Application of response surface methodology to optimize chromium (VI) removal from aqueous solution using pre‐treated sawdust

Adsorption of Reactive Black 5 and Basic Blue 12 using biochar from gasification residues: Batch tests and fixed-bed breakthrough predictions for wastewater treatment

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