Ash pretreatment of pine and biosolids produces biochars with enhanced capacity for organic micropollutant removal from surface water, wastewater, and stormwater

Bentley, Matthew J.; Summers, R. Scott

doi:10.1039/c9ew00862d

Cited by 15 publications

(1 citation statement)

References 55 publications

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“…doubled in comparison to SWP (0.29 cm 3 g -1 ). This increase in pore diameter and volume is especially important for the adsorption performance as contaminants often cannot enter narrow micropores (Bentley and Summers, 2020). The differential pore volume in the narrow micropore region of 1-1.2 nm also increased substantially for SWP 5 and 10, indicating a more pronounced creation of micropores by CO2 ( Figure 4).…”

Section: Activated Biochar Characterisationmentioning

confidence: 99%

Feedstock doping using iron rich waste increases the pyrolysis gas yield and adsorption performance of magnetic biochar for emerging contaminants

Wurzer

Mašek

2021

Bioresource Technology

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Magnetic carbons can significantly lower the costs of wastewater treatment due to easy separation of the adsorbent. However, current production techniques often involve the use of chlorinated or sulfonated Fe precursors with an inherent potential for secondary pollution. In this study, ochre, an iron-rich waste stream was investigated as a sustainable Fe source to produce magnetic activated biochar from two agricultural feedstocks, softwood and wheat straw. Fe-doping resulted in significant shifts in pyrolysis yield distribution with increased gas yields (+50 %) and gas energy content (+40 %) lowering the energy costs for production. Physical activation transformed ochre to magnetite/maghemite resulting in activated magnetic biochars and lead to a 4-fold increase in the adsorption capacities for two common micropollutants-caffeine and fluconazole. The results show that Fe doping not only benefits the adsorbent properties but also the production process, leading the way to sustainable carbon adsorbents.

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Section: Activated Biochar Characterisationmentioning

confidence: 99%

Feedstock doping using iron rich waste increases the pyrolysis gas yield and adsorption performance of magnetic biochar for emerging contaminants

Wurzer

Mašek

2021

Bioresource Technology

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Phenoxy Herbicides in Aquatic Ecosystems: Environmental Levels, Toxicological Effects, and Remediation Methods

Mierzejewska

Urbaniak

2022

Emerging Contaminants and Associated Treatment Technologies

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Use of Biochar for Limiting the Pathway of Exposure and Reducing the Risk of Heavy Metal Contamination from Mines

Mafiana

Dodkins

Dirisu

et al. 2021

Water Air Soil Pollut

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Ash pretreatment of pine and biosolids produces biochars with enhanced capacity for organic micropollutant removal from surface water, wastewater, and stormwater

Abstract: An ash pretreatment process was developed and evaluated for improving sorption of 2,4-dichlorophenoxyacetic acid and sulfamethoxazole for pine and biosolids based biochars, making them competitive with commercial activated carbon.

Cited by 15 publications

References 55 publications

Feedstock doping using iron rich waste increases the pyrolysis gas yield and adsorption performance of magnetic biochar for emerging contaminants

Feedstock doping using iron rich waste increases the pyrolysis gas yield and adsorption performance of magnetic biochar for emerging contaminants

Phenoxy Herbicides in Aquatic Ecosystems: Environmental Levels, Toxicological Effects, and Remediation Methods

Use of Biochar for Limiting the Pathway of Exposure and Reducing the Risk of Heavy Metal Contamination from Mines

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