Eco-approach for pharmaceutical removal: Thermochemical waste valorisation, biochar adsorption and electro-assisted regeneration

Escudero-Curiel, Silvia; Acevedo-García, Valeria; Sanromán, M. Ángeles

doi:10.1016/j.electacta.2021.138694

Cited by 21 publications

(3 citation statements)

References 74 publications

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“…Multiple adsorption-desorption cycles were completed successfully with minimal heat while maintaining the biochar's consistency. This technique demonstrates the applicability of chemical regeneration, which can be used under optimal conditions without external heat (Escudero-Curiel et al 2021).…”

Section: Chemical Versus Thermal Regenerationmentioning

confidence: 89%

Methods to prepare biosorbents and magnetic sorbents for water treatment: a review

et al. 2023

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Access to drinkable water is becoming more and more challenging due to worldwide pollution and the cost of water treatments. Water and wastewater treatment by adsorption on solid materials is usually cheap and effective in removing contaminants, yet classical adsorbents are not sustainable because they are derived from fossil fuels, and they can induce secondary pollution. Therefore, biological sorbents made of modern biomass are increasingly studied as promising alternatives. Indeed, such biosorbents utilize biological waste that would otherwise pollute water systems, and they promote the circular economy. Here we review biosorbents, magnetic sorbents, and other cost-effective sorbents with emphasis on preparation methods, adsorbents types, adsorption mechanisms, and regeneration of spent adsorbents. Biosorbents are prepared from a wide range of materials, including wood, bacteria, algae, herbaceous materials, agricultural waste, and animal waste. Commonly removed contaminants comprise dyes, heavy metals, radionuclides, pharmaceuticals, and personal care products. Preparation methods include coprecipitation, thermal decomposition, microwave irradiation, chemical reduction, micro-emulsion, and arc discharge. Adsorbents can be classified into activated carbon, biochar, lignocellulosic waste, clays, zeolites, peat, and humic soils. We detail adsorption isotherms and kinetics. Regeneration methods comprise thermal and chemical regeneration and supercritical fluid desorption. We also discuss exhausted adsorbent management and disposal. We found that agro-waste biosorbents can remove up to 68–100% of dyes, while wooden, herbaceous, bacterial, and marine-based biosorbents can remove up to 55–99% of heavy metals. Animal waste-based biosorbents can remove 1–99% of heavy metals. The average removal efficiency of modified biosorbents is around 90–95%, but some treatments, such as cross-linked beads, may negatively affect their efficiency.

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Section: Chemical Versus Thermal Regenerationmentioning

confidence: 89%

Methods to prepare biosorbents and magnetic sorbents for water treatment: a review

et al. 2023

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“…The adsorption technique has proven to be highly suitable for environmental remediation using chars derived from agri-food residues, particularly in the removal of pollutants from wastewater that the current WWTPs are not able to remove [49][50][51][52][53].…”

Section: Biochar and Hydrochar As Adsorbentsmentioning

confidence: 99%

From Waste to Resource: Valorization of Lignocellulosic Agri-Food Residues through Engineered Hydrochar and Biochar for Environmental and Clean Energy Applications—A Comprehensive Review

Escudero-Curiel,

Giráldez,

Pazos

et al. 2023

Foods

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Agri-food residues or by-products have increased their contribution to the global tally of unsustainably generated waste. These residues, characterized by their inherent physicochemical properties and rich in lignocellulosic composition, are progressively being recognized as valuable products that align with the principles of zero waste and circular economy advocated for by different government entities. Consequently, they are utilized as raw materials in other industrial sectors, such as the notable case of environmental remediation. This review highlights the substantial potential of thermochemical valorized agri-food residues, transformed into biochar and hydrochar, as versatile adsorbents in wastewater treatment and as promising alternatives in various environmental and energy-related applications. These materials, with their enhanced properties achieved through tailored engineering techniques, offer competent solutions with cost-effective and satisfactory results in applications in various environmental contexts such as removing pollutants from wastewater or green energy generation. This sustainable approach not only addresses environmental concerns but also paves the way for a more eco-friendly and resource-efficient future, making it an exciting prospect for diverse applications.

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“…O biochar teve capacidade de adsorção da tetraciclina de 100% em águas residuárias domésticas e a eficiência da filtração com biochar foi em média 25% maior do que com o carvão comercial. Diante do exposto conclui-se a possibilidade de conversão de um resíduo da agroindústria de baixo valor e sem destinação apropriada, em um produto de valor agregado, o biochar do bagaço da laranja, a ser utilizado como tratamento terciário para o reuso de efluentes na irrigação de culturas e como adsorvente para remoção da tetraciclina em águas residuárias domésticas.Uma eco-abordagem para a remoção de produtos farmacêuticos do meio aquoso foi desenvolvida porEscudero-Curiel et al, (2021) sob os princípios da economia circular. Portanto, um adsorvente ecológico, biochar, foi sintetizado pela valorização termoquímica de resíduos da produção de arroz.…”

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The Use of Biochar for Removal of Emerging Contaminants in Contaminated Water

Medran Rangel,

Wickboldt Stark

et al. 2023

jid

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Biochar is a product that has been gaining prominence in the scientific community, and its applicability in the treatment of contaminated environments has been studied all over the world. Its characteristics such as yield and properties vary greatly with the type of raw material, production technology and operational parameters applied. Emerging contaminants are a global concern and need attention, so the use of bugs to remove these contaminants is a viable alternative. The objective of this research is to analyze how the authors are using biochar to treat water and effluents contaminated with emerging contaminants. The articles were searched in reputable databases, such as Science Direct and SciElo, after careful analysis, 15 articles on the subject of study were evaluated. Researchers and decision makers bring important results in their research on the most efficient ways to choose raw materials for biochar production, implementing sustainable production technologies and presenting satisfactory results in the removal of emerging contaminants. Through the data analyzed, it was possible to conclude that biochar is a promising, low-cost, highly replicable material that often uses solid waste from other production processes as raw material and efficiently removes contaminants emerging from aqueous media.

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Eco-approach for pharmaceutical removal: Thermochemical waste valorisation, biochar adsorption and electro-assisted regeneration

Cited by 21 publications

References 74 publications

Methods to prepare biosorbents and magnetic sorbents for water treatment: a review

Methods to prepare biosorbents and magnetic sorbents for water treatment: a review

From Waste to Resource: Valorization of Lignocellulosic Agri-Food Residues through Engineered Hydrochar and Biochar for Environmental and Clean Energy Applications—A Comprehensive Review

The Use of Biochar for Removal of Emerging Contaminants in Contaminated Water

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