Ionisable emerging pharmaceutical adsorption onto microwave functionalised biochar derived from novel lignocellulosic waste biomass(Article)
- aUniversity of Novi Sad, Faculty of Technical Sciences, Department of Environmental Engineering and Occupational Safety and Health, Trg Dositeja Obradovica 6, Novi Sad, Serbia
- bEnvironmental Research Institute, North Highland College, University of the Highlands and Islands, Thurso, Scotland KW14 7JD, United Kingdom
- cUniversity of Novi Sad, Faculty of Science, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovića 3, Novi Sad, Serbia
Abstract
Functionalised biochar (WpOH) was prepared from wild plum kernels using simultaneous pyrolysis and microwave potassium hydroxide (KOH) functionalisation. This was then applied to the removal (from water) of an ionisable pharmaceutical - naproxen (NPX). Characterization of the WpOH was carried out using pH pzc , SEM/EDX, BET, FTIR, XRD, and the principle adsorption mechanisms were thoroughly studied. A pseudo-second order kinetic model best described the reaction kinetic behaviour, and the Langmuir isotherm provided the best fit to the results. The maximum adsorptive interaction (73.14 mg/g) occurred between pH 5 and 7 through electrostatic attraction (the main interaction mechanism) between the negatively charged NPX and the positively charged WpOH functional groups. In addition, hydrogen-bonding and electron-donor-acceptor (EDA) interactions were important. In a competitive study, using NPX and carbamazepine (a basic/amphoteric drug), the different nature/structure of the two compounds resulted in slight competitive adsorption. The results demonstrate the potential for wild plum kernel biochar to be used in the efficient removal of emerging contaminants such as pharmaceuticals from water. © 2019
Indexed keywords
| Engineering controlled terms: | AmidesHydrogen bondsIsothermsMechanismsPotassium hydroxideReaction kinetics |
|---|---|
| Engineering uncontrolled terms | Bio charsCompetitive adsorptionElectron donor acceptorsElectrostatic attractionsInteraction mechanismsLignocellulosic wastesPharmaceutical compoundsPseudo-second-order kinetic models |
| Engineering main heading: | Adsorption |
| EMTREE drug terms: | activated carbonbiocharcarbamazepinecharcoalhydroxyl grouplignocellulosenaproxenunclassified drugbiocharcharcoalnaproxen |
| EMTREE medical terms: | analytic methodArticleashbiomassbrunauer emmett tellercontact timedrug adsorptionelemental analysisenergy dispersive X ray spectroscopyFourier transform infrared spectroscopyhydrogen bondkineticsmicrowave radiationmoisturepHpore volumeporositypriority journalreaction analysisscanning electron microscopystatic electricitywasteX ray diffractionadsorptionanalysisbiomasschemistryisolation and purificationparticle sizeplumsurface propertywater pollutant |
| MeSH: | AdsorptionBiomassCharcoalHydrogen-Ion ConcentrationMicrowavesNaproxenParticle SizePrunus domesticaSurface PropertiesWater Pollutants, Chemical |
Chemicals and CAS Registry Numbers:
activated carbon, 64365-11-3, 82228-96-4; carbamazepine, 298-46-4, 8047-84-5; charcoal, 16291-96-6; lignocellulose, 11132-73-3; naproxen, 22204-53-1, 26159-34-2;
biochar; Charcoal; Naproxen; Water Pollutants, Chemical
Funding details
| Funding sponsor | Funding number | Acronym |
|---|---|---|
| III46009,TR34014,34014,46009 |
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1
The authors acknowledge the financial support by the Ministry of Education, Science and Technological Development of the Republic of Serbia (Projects: III46009 and TR34014). The authors also acknowledge Dr. Kenneth Boyd for his useful advice which helped improve the manuscript.
- ISSN: 00219797
- CODEN: JCISA
- Source Type: Journal
- Original language: English
- DOI: 10.1016/j.jcis.2019.04.011
- PubMed ID: 30974250
- Document Type: Article
- Publisher: Academic Press Inc.
Pap, S.; Environmental Research Institute, North Highland College, University of the Highlands and Islands, Thurso, Scotland, United Kingdom;
© Copyright 2019 Elsevier B.V., All rights reserved.
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