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Removal of boron from aqueous solution using cryptocrystalline magnesite

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dc.contributor.author Masindi, Vhahangwele
dc.contributor.author Gitari, MW
dc.date.accessioned 2017-02-23T10:05:05Z
dc.date.available 2017-02-23T10:05:05Z
dc.date.issued 2016-05
dc.identifier.citation Masindi, V. and Gitari, M.W. 2016. Removal of boron from aqueous solution using cryptocrystalline magnesite. Journal of Water Reuse and Desalination, 6(4) en_US
dc.identifier.issn 2220-1319
dc.identifier.uri http://jwrd.iwaponline.com/content/early/2016/05/14/wrd.2016.012
dc.identifier.uri http://hdl.handle.net/10204/8982
dc.description Copyright: 2016 IWA Publishing. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. The definitive version of the work is published in Journal of Water Reuse and Desalination, 6(4) en_US
dc.description.abstract The present study aimed to evaluate the efficiency of using cryptocrystalline magnesite to remove boron ions from aqueous systems. Batch experimental protocols were used to evaluate the adsorption capacity of magnesite for boron. Parameters optimized included: time, dosage, chemical species concentration and pH. Optimum conditions were observed to be 30 min of agitation, 1g dosage of magnesite per 100 mL of aqueous solution and 20 mg/L initial boron concentration. Removal of boron from aqueous solution was observed to be independent of initial pH of the aqueous solution. The adsorption of boron onto magnesite was observed to fit better to pseudosecond- order kinetics than pseudo-first-order-kinetics hence proving chemisorption. The intraparticle diffusion model revealed that the adsorption of boron from aqueous system occurs through multiple reaction phenomena. Adsorption isotherms proved that the removal of boron by magnesite fitted well to both Langmuir and Freundlich adsorption isotherms hence proving that both mono- and multi-site adsorption processes are taking place. Under optimized conditions, magnesite was able to attenuate the boron concentration to <0.01 mg/L which is below levels stipulated in World Health Organization guidelines. It was concluded that this comparative study will be helpful for further application of magnesite in remediation of boron-contaminated aqueous systems. en_US
dc.language.iso en en_US
dc.publisher IWA Publishing en_US
dc.relation.ispartofseries Wokflow;17346
dc.subject Adsorption en_US
dc.subject Boron ions en_US
dc.subject Cryptocrystalline magnesite en_US
dc.subject Isotherms en_US
dc.subject Kinetics en_US
dc.title Removal of boron from aqueous solution using cryptocrystalline magnesite en_US
dc.type Article en_US
dc.identifier.apacitation Masindi, V., & Gitari, M. (2016). Removal of boron from aqueous solution using cryptocrystalline magnesite. http://hdl.handle.net/10204/8982 en_ZA
dc.identifier.chicagocitation Masindi, Vhahangwele, and MW Gitari "Removal of boron from aqueous solution using cryptocrystalline magnesite." (2016) http://hdl.handle.net/10204/8982 en_ZA
dc.identifier.vancouvercitation Masindi V, Gitari M. Removal of boron from aqueous solution using cryptocrystalline magnesite. 2016; http://hdl.handle.net/10204/8982. en_ZA
dc.identifier.ris TY - Article AU - Masindi, Vhahangwele AU - Gitari, MW AB - The present study aimed to evaluate the efficiency of using cryptocrystalline magnesite to remove boron ions from aqueous systems. Batch experimental protocols were used to evaluate the adsorption capacity of magnesite for boron. Parameters optimized included: time, dosage, chemical species concentration and pH. Optimum conditions were observed to be 30 min of agitation, 1g dosage of magnesite per 100 mL of aqueous solution and 20 mg/L initial boron concentration. Removal of boron from aqueous solution was observed to be independent of initial pH of the aqueous solution. The adsorption of boron onto magnesite was observed to fit better to pseudosecond- order kinetics than pseudo-first-order-kinetics hence proving chemisorption. The intraparticle diffusion model revealed that the adsorption of boron from aqueous system occurs through multiple reaction phenomena. Adsorption isotherms proved that the removal of boron by magnesite fitted well to both Langmuir and Freundlich adsorption isotherms hence proving that both mono- and multi-site adsorption processes are taking place. Under optimized conditions, magnesite was able to attenuate the boron concentration to <0.01 mg/L which is below levels stipulated in World Health Organization guidelines. It was concluded that this comparative study will be helpful for further application of magnesite in remediation of boron-contaminated aqueous systems. DA - 2016-05 DB - ResearchSpace DP - CSIR KW - Adsorption KW - Boron ions KW - Cryptocrystalline magnesite KW - Isotherms KW - Kinetics LK - https://researchspace.csir.co.za PY - 2016 SM - 2220-1319 T1 - Removal of boron from aqueous solution using cryptocrystalline magnesite TI - Removal of boron from aqueous solution using cryptocrystalline magnesite UR - http://hdl.handle.net/10204/8982 ER - en_ZA


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