Valorization of waste-derived coffee husk into a sustainable adsorbent for multicomponent pharmaceutical removal from complex wastewater under continuous-flow conditions

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dc.contributor.affiliationGrupo de Materiales con Impacto, Universidad de Medellín, Medellin, Colombia
dc.contributor.affiliationCorporación Universitaria Remington, Medellin, Colombia
dc.contributor.affiliationSchool of Chemical Sciences, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
dc.contributor.affiliationInstituto Politécnico Nacional, Mexico, Mexico
dc.contributor.authorOspina-Montoya, V.
dc.contributor.authorAguirre-Contreras, S.
dc.contributor.authorOcampo-Pérez, R.
dc.contributor.authorPadilla-Ortega, E.
dc.contributor.authorPérez, S.
dc.contributor.authorMuñoz-Saldaña, J.
dc.contributor.authorPorras, J.
dc.contributor.authorAcelas, N.
dc.contributor.authorForgionny, A.
dc.date.accessioned2025-12-03T19:34:45Z
dc.date.available2025-12-03T19:34:45Z
dc.date.issued2025
dc.descriptionThis study elucidates the competitive adsorption dynamics of ciprofloxacin (CIP) and acetaminophen (ACE) onto coffee husk activated with potassium (CH-KOH, BET surface area = 1145 m2 g−1, pH<inf>PZC</inf> = 7.36), providing mechanistic insights into the removal of pharmaceuticals in complex aqueous matrices. The Modified Langmuir multicomponent isotherm effectively captured the competitive equilibrium behavior (deviation = 25.8%), showing a higher affinity for ACE (η<inf>ACE</inf> = 0.7) than for CIP (η<inf>CIP</inf> = 4.9), the qT was 1.25 mmol g−1 across the entire evaluated concentration range, which is similar to the observed in mono-component systems, Q<inf>max</inf> 1.26 mmol g−1 for ACE and 0.58 mmol g−1 for CIP, with removal efficiencies of 91-99% and 75-99%, respectively. In real matrices such as synthetic hospital wastewater and urine, high efficiencies (84-97%) were maintained. Fixed-bed column studies confirmed the strong performance under continuous-flow conditions, with saturation capacities (q<inf>s</inf>) up to 1.46 mmol g−1 for ACE and 0.61 mmol g−1 for CIP, mass transfer zones ranging from 0.42 to 1.53 cm, and breakthrough times between 91 and 1463 min depending on flow rate (1-3 mL min−1) and bed height (1-3 cm). The Thomas model accurately predicted breakthrough curves, revealing faster kinetics for ACE. Physisorption predominates, involving synergistic π-π stacking interactions, hydrogen bonding networks, and hydrophobic association, with ACE showing greater selectivity in both mono and multicomponent systems. CH-KOH exhibited high stability and reusability, stabilizing at approximately 70% of its initial capacity by the third cycle, with no further decrease observed in the fourth cycle. Comprehensive physicochemical characterization revealed that physisorption predominates, involving synergistic π-π stacking interactions, hydrogen bonding networks, and hydrophobic associations. These results confirm the potential of CH-KOH as a sustainable adsorbent for pharmaceutical contaminant removal in real-world scenarios, integrating circular economy principles into advanced water treatment. © 2025 Elsevier B.V., All rights reserved.
dc.identifier.doi10.1039/d5ew00499c
dc.identifier.instnameinstname:Universidad de Medellínspa
dc.identifier.issn20531400
dc.identifier.issn20531419
dc.identifier.reponamereponame:Repositorio Institucional Universidad de Medellínspa
dc.identifier.repourlrepourl:https://repository.udem.edu.co/
dc.identifier.urihttp://hdl.handle.net/11407/9241
dc.language.isoeng
dc.publisherRoyal Society of Chemistryspa
dc.publisher.facultyInstituto de Ciencias Básicasspa
dc.relation.isversionofhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-105018588133&doi=10.1039%2Fd5ew00499c&partnerID=40&md5=0a465097fe52024d15e1f6393f05e148
dc.relation.referencesLi, Xingyu, Comprehensive review of emerging contaminants: Detection technologies, environmental impact, and management strategies, Ecotoxicology and Environmental Safety, 278, (2024)
dc.relation.referencesWhite Paper Aquatic Life Criteria for Contaminants of Emerging Concern, (2008)
dc.relation.referencesRanjan, Nitin, Pharmaceuticals in water as emerging pollutants for river health: A critical review under Indian conditions, Ecotoxicology and Environmental Safety, 247, (2022)
dc.relation.referencesFront Microbiol, (2022)
dc.relation.referencesFront Earth Sci, (2023)
dc.relation.referencesSamal, Kundan, Pharmaceutical wastewater as Emerging Contaminants (EC): Treatment technologies, impact on environment and human health, Energy Nexus, 6, (2022)
dc.relation.referencesHejna, Monika, Pharmaceuticals in the Aquatic Environment: A Review on Eco-Toxicology and the Remediation Potential of Algae, International Journal of Environmental Research and Public Health, 19, 13, (2022)
dc.relation.referencesWilkinson, John L., Pharmaceutical pollution of the world's rivers, Proceedings of the National Academy of Sciences of the United States of America, 119, 8, (2022)
dc.relation.referencesAzizi, Dariush, A comprehensive review on current technologies for removal of endocrine disrupting chemicals from wastewaters, Environmental Research, 207, (2022)
dc.relation.referencesChakraborty, Aritra, Pharmaceuticals and Personal Care Products as Emerging Environmental Contaminants: Prevalence, Toxicity, and Remedial Approaches, ACS Chemical Health and Safety, 30, 6, pp. 362-388, (2023)
dc.rights.accesoRestricted access
dc.rights.accessrightsinfo:eu-repo/semantics/restrictedAccess
dc.sourceEnvironmental Science: Water Research and Technology
dc.sourceScopus
dc.subjectAssociation reactions
dc.subjectBody fluids
dc.subjectCoffee
dc.subjectComplex networks
dc.subjectComputer software reusability
dc.subjectDrug products
dc.subjectHydrogen bonds
dc.subjectHydrophobicity
dc.subjectIsotherms
dc.subjectMass transfer
dc.subjectPotassium hydroxide
dc.subjectRemoval
dc.subjectCoffee husks
dc.subjectComplex wastewater
dc.subjectContinuous-flow
dc.subjectFlow condition
dc.subjectHydrogen bonding network
dc.subjectHydrophobic association
dc.subjectMulticomponents
dc.subjectNetwork associations
dc.subjectValorisation
dc.subjectπ-π stacking interactions
dc.subjectReusability
dc.titleValorization of waste-derived coffee husk into a sustainable adsorbent for multicomponent pharmaceutical removal from complex wastewater under continuous-flow conditions
dc.typeArticle
dc.type.localArtículospa
dc.type.versioninfo:eu-repo/semantics/publishedVersion

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