Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/152718
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dc.contributor.authorHerath, Gayana Anjali Dissanayakeen_US
dc.contributor.authorPoh, Leong Soonen_US
dc.contributor.authorNg, Wun Jernen_US
dc.date.accessioned2021-09-20T02:09:42Z-
dc.date.available2021-09-20T02:09:42Z-
dc.date.issued2019-
dc.identifier.citationHerath, G. A. D., Poh, L. S. & Ng, W. J. (2019). Statistical optimization of glyphosate adsorption by biochar and activated carbon with response surface methodology. Chemosphere, 227, 533-540. https://dx.doi.org/10.1016/j.chemosphere.2019.04.078en_US
dc.identifier.issn0045-6535en_US
dc.identifier.urihttps://hdl.handle.net/10356/152718-
dc.description.abstractThe introduction of glyphosate, found in herbicides, to waterbodies is of concern due to its toxicity and hence potential threat to public health and ecological systems. The present study has compared glyphosate removal from aqueous solution with activated carbon and biochar. Box-Behnken design, and percent contribution with Pareto analysis techniques were used in surface response and efficiency calculations modelled the process conditions and their effects. The adsorption data better fitted the Freundlich isotherm model than the Langmuir model. The rate of glyphosate adsorption was found to follow a pseudo-second-order model. pH of the solutions was regulated by buffering during the adsorption process. Higher efficacy of glyphosate removal was obtained by optimising parameters such as operating pH, initial glyphosate concentration, temperature, adsorbent dose, and contact time. The conditions yielding the best removals were pH 8.0, 0.2 mg/L, 50.0 °C, 11.4 g/L, 1.7 h for activated carbon and pH 5.0, 0.7 mg/L, 50.0 °C, 12.3 g/L, 1.9 h for biochar, for the aforementioned parameters respectively. The maximum removal capacity and efficiency were 0.0173 mg/g and 98.45% for activated carbon, and 0.0569 mg/g and 100.00% for biochar. The test results indicated biochar could be important from the perspective of performance and affordability.en_US
dc.language.isoenen_US
dc.relation.ispartofChemosphereen_US
dc.rights© 2019 Elsevier Ltd. All rights reserved.en_US
dc.subjectEngineering::Environmental engineeringen_US
dc.titleStatistical optimization of glyphosate adsorption by biochar and activated carbon with response surface methodologyen_US
dc.typeJournal Articleen
dc.contributor.schoolInterdisciplinary Graduate School (IGS)en_US
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.contributor.researchEnvironmental Bio-innovations Groupen_US
dc.identifier.doi10.1016/j.chemosphere.2019.04.078-
dc.identifier.pmid31004820-
dc.identifier.scopus2-s2.0-85064455357-
dc.identifier.volume227en_US
dc.identifier.spage533en_US
dc.identifier.epage540en_US
dc.subject.keywordsGlyphosateen_US
dc.subject.keywordsBox-behnken Methoden_US
item.grantfulltextnone-
item.fulltextNo Fulltext-
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