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Please use this identifier to cite or link to this item: https://ptsldigital.ukm.my/jspui/handle/123456789/578489
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dc.contributor.authorSiti Fatimah Halim (UITM)
dc.contributor.authorSoon Kong Yong (UITM)
dc.contributor.authorChia Chay Tay (UITM)
dc.date.accessioned2023-11-06T03:02:35Z-
dc.date.available2023-11-06T03:02:35Z-
dc.date.issued2017-07
dc.identifier.issn0128-7680
dc.identifier.otherukmvital:115967
dc.identifier.urihttps://ptsldigital.ukm.my/jspui/handle/123456789/578489-
dc.descriptionThe objective of this study is to elucidate sorption mechanism of ammonia-N by Spent Mushroom Substrate Biochar (SMSB), produced from pyrolysis process of Spent Mushroom Substrate (SMS) at 550°C for two hours. Surface functional group, ash contents, and elemental compositions were analysed using Boehm titration, furnace and Inductively Coupled Plasma-Optical Emission Spectroscopy (ICPOES) respectively. Sorption parameters (i.e., sorbent dosage, input ammonia-N concentration, and contact time) were optimised, and the sorption data were analysed using kinetic models (i.e., pseudo-first-order and pseudo-second-order), and isotherm models (i.e., Langmuir, Freundlich, and Dubinin-Radushkevich (D-R)). The surface of SMSB consists of carboxylic (0.3 mmol/g), phenolic (0.5 mmol/g), and basic functional groups (0.2 mmol/g). Sorption of ammonia-N was best described by the pseudo-second-order kinetic model and the Dubinin-Radushkevich (D-R) isotherm model. The D-R sorption capacity for SMSB was 12.6 mg/g, and correlates well with the amount of acid functional groups (i.e., carboxylic and phenolic groups) in SMSB (i.e., 14.4 mg/g). The low Freundlich constant (n = 0.754), and low D-R mean free energy per mol of the adsorbate (E = 4.4 kJ/mol) indicates a physical sorption process, and ammonia-N binds with acid functional groups through weak forces. The result shows great potential of SMSB for removing ammonia-N in wastewater.
dc.language.isoen
dc.publisherUniversiti Putra Malaysia Press
dc.relation.haspartPertanika Journals
dc.relation.urihttp://www.pertanika.upm.edu.my/regular_issues.php?jtype=2&journal=JST-25-S-7
dc.rightsUKM
dc.subjectActivated carbon
dc.subjectAmmonia
dc.subjectAmmonium
dc.subjectCharcoal
dc.subjectNutrient
dc.subjectSewage wastewater
dc.titleAmmonia nitrogen adsorption using spent mushroom substrate biochar (SMSB)
dc.typeJournal Article
dc.format.volume25
dc.format.pages9-20
dc.format.issueSpecial Issue
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