Applications of Modified Biochar-Based Materials for the Removal of Environment Pollutants: A Mini Review

Lee, Jung Eun; Park, Young-Kwon

doi:10.3390/su12156112

Cited by 34 publications

(12 citation statements)

References 59 publications

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“…In the advanced oxidation processes, active radical species such as hydroxyl or oxygen radicals can react with functional groups attached to the biochar surface for electron transfer. Application of the modified biochar as an effective catalyst is helpful for environmental safety, due to strong holding of contaminants (Lee & Park 2020). Modified biochar is widely used in the remediation of heavy metal-contaminated soil and water in different areas.…”

Section: Soil Heavy Metal Remediationmentioning

confidence: 99%

Biochar modification and application to improve soil fertility and crop productivity

Ghassemi‐Golezani

Rahimzadeh

2022

Agriculture (Pol'nohospodárstvo)

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Biochar as an eco-friendly and low-cost product has the potential for modification to improve its functionality. The application of modified biochar is a new approach that can improve soil properties, quality, and productivity of plants, thereby helping sustainable agriculture. The focus of the recent studies has dealt with methods for improving the function of biochar. Biochar can be modified to enhance its physicochemical properties (such as bulk density, cation exchange capacity, specific surface area, and porosity) and nutritional value. This review provides crucial and summarizing information about the classification of biochar modification techniques for agricultural application and a comparison of pristine and modified biochar function on soil fertility and plant production. There are several approaches for modification of biochar, which can be divided into four main categories: chemical, physical, enriched with minerals, and nanocomposites. The modified biochar could be more appropriate for poor-nutrient soils and has a high adsorption capacity and potential for different pollutants immobilization. Further research is needed to determine the best methods of biochar modification with short-term and long-term effects on soil fertility and plant growth under different environmental conditions.

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Section: Soil Heavy Metal Remediationmentioning

confidence: 99%

Biochar modification and application to improve soil fertility and crop productivity

Ghassemi‐Golezani

Rahimzadeh

2022

Agriculture (Pol'nohospodárstvo)

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“…Recently, adsorbents are categorized into major classes such as biomaterials, zeolite, metal (oxides), clay minerals, and activated carbon (Neolaka et al 2020;Sirajudheen et al 2020). Plenty of the local and low-cost adsorbents are prepared from different kinds of materials such as cassava peel, willow peat, bamboo, bagasse fly ash, cotton, walnut shells, pine tar, orange peel, miscanthus straw, agricultural wastes, orange waste, the bark of the Vitex negundo morinda, tinctorial bark, bagasse, avocado seed, wheat straw, watermelon rinds, zeolites, clay minerals, sludge, macro-algae, parthenium hysterophorus, sawdust, buffalo weed, wood pellets, ramie bars, hemp stem, reed straw, coconut husks, and crocus sativus leaves (Lingamdinne et al 2015(Lingamdinne et al , 2022Roh et al 2015;Mishra et al 2019;Fito et al 2020a;Lee and Park 2020;Neolaka et al 2020;Sirajudheen et al 2020;Xiao et al 2021;Tebeje et al 2021;Narasimharao et al 2023). However, the application of these technologies is limited due to weak adsorbent regeneration, practical challenges, poor sludge management, and low treatment efficiency (Moges et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Magnetite-impregnated biochar of parthenium hysterophorus for adsorption of Cr(VI) from tannery industrial wastewater

2023

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The tannery industry inevitably generates toxic and catastrophic wastewater, which results in a huge threat to public health and water resources. Therefore, this work aimed to synthesize parthenium hysterophorus-based biochar–Fe3O4 composite for removal of Cr(VI) from tannery wastewater under 34 full factorial experimental designs of the Box–Behnken, which was analyzed using response surface methodology under four independent factors of pH (3, 6, and 9), initial Cr(VI) concentrations (40, 70, and 100 mg/L), contact times (30, 60, and 90 min), and adsorbent doses (20, 60, and 100 mg/100 mL). This composite adsorbent was described by a high BET surface area of 237.4 m2/g, XRD prominent peaks, SEM morphology corroborate and FTIR multifunctionalities of O–H at 3296 cm−1, the vibration of ketone C–OH at 1240 cm−1, and the vibration of C–O–C at 1147 cm−1 and Fe–O stretching at 542 cm−1. The maximum Cr(IV) removal efficiency of 91.8% was recorded at an initial Cr(VI) concentration of 40 mg/L, pH of 3, adsorbent dose of 100 mg/100 mL, and a contact time of 90 min, whereas the minimum Cr(VI) removal of 17.3% was observed at an initial Cr(VI) concentration of 100 mg/L, 20 mg/100 mL of adsorbent dose, pH of 9, and contact time of 30 min. The concentration of Cr(VI) in real wastewater was determined to be 85.13 mg/L and its remediation was found to be 81.8%. Langmuir’s model was the best fit with experimental data at R2 0.99 and qmax 400 mg/g, showing that the adsorption process was homogenous and monolayer. In conclusion, the adsorption results were encouraging, and biochar–Fe3O4 appears to be a potential candidate for Cr removal from wastewater.

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“…Recently, much attention has been paid to bio-waste-based materials, which is considered a green technique, offering twin benefits of waste load reduction and land and water reclamation [ 4 ]. The agricultural residues contribute as an easily available and important source of materials to be used as an environmental catalyst for the removal of contaminants [ 9 ]. Biochar obtained through the torrefaction/pyrolysis of agricultural wastes has been studied because of its high efficiency for adsorption of different inorganic pollutants [ 10 ] in soil and aqueous solutions [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Sodium Cations Sorption Capacity of Chemically Modified Biochars Produced from Agricultural and Forestry Wastes

et al. 2021

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Excessive amounts of sodium cations (Na+) in water is an important limiting factor to reuse poor quality water in agriculture or industry, and recently, much attention has been paid to developing cost-effective and easily available water desalination technology that is not limited to natural resources. Biochar seems to be a promising solution for reducing high loads of inorganic contaminant from water and soil solution, and due to the high availability of biomass in agriculture and forestry, its production for these purposes may become beneficial. In the present research, wheat straw, sunflower husk, and pine-chip biochars produced at 250, 450 and 550 °C under simple torrefaction/pyrolysis conditions were chemically modified with ethanol or HCl to determine the effect of these activations on Na sorption capacity from aqueous solution. Biochar sorption property measurements, such as specific surface area, cation exchange capacity, content of base cations in exchangeable forms, and structural changes of biochar surface, were performed by FTIR and EPR spectrometry to study the effect of material chemical activation. The sorption capacity of biochars and activated carbons was investigated by performing batch sorption experiments, and adsorption isotherms were tested with Langmuir’s and Freundlich’s models. The results showed that biochar activation had significant effects on the sorption characteristics of Na+, increasing its capacity (even 10-folds) and inducing the mechanism of ion exchange between biochar and saline solution, especially when ethanol activation was applied. The findings of this study show that biochar produced through torrefaction with ethanol activation requires lower energy demand and carbon footprint and, therefore, is a promising method for studying material applications for environmental and industrial purposes.

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Applications of Modified Biochar-Based Materials for the Removal of Environment Pollutants: A Mini Review

Cited by 34 publications

References 59 publications

Biochar modification and application to improve soil fertility and crop productivity

Biochar modification and application to improve soil fertility and crop productivity

Magnetite-impregnated biochar of parthenium hysterophorus for adsorption of Cr(VI) from tannery industrial wastewater

Characterization and Sodium Cations Sorption Capacity of Chemically Modified Biochars Produced from Agricultural and Forestry Wastes

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