Pyrolysis temperature and steam activation effects on sorption of phosphate on pine sawdust biochars in aqueous solutions
Biochar can be used as an adsorbent for phosphate removal in aquatic environments to treat eutrophication problems. Designing biochars that have large phosphate adsorption capacity through altering pyrolysis conditions and applying activation techniques will improve phosphate removal efficiency. In...
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2016-10-01
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Online Access: | http://dx.doi.org/10.1080/09542299.2016.1165080 |
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doaj-5fc9e6e782b0421280b7860e974084472020-11-25T02:53:08ZengTaylor & Francis GroupChemical Speciation & Bioavailability0954-22992047-65232016-10-01281-4425010.1080/09542299.2016.11650801165080Pyrolysis temperature and steam activation effects on sorption of phosphate on pine sawdust biochars in aqueous solutionsKangyi Lou0Anushka Upamali Rajapaksha1Yong Sik Ok2Scott X. Chang3University of AlbertaKangwon National UniversityKangwon National UniversityUniversity of AlbertaBiochar can be used as an adsorbent for phosphate removal in aquatic environments to treat eutrophication problems. Designing biochars that have large phosphate adsorption capacity through altering pyrolysis conditions and applying activation techniques will improve phosphate removal efficiency. In this study, four pine sawdust biochars were produced at 300 and 550 °C with and without steam activation. Batch sorption experiments including isotherm and kinetic studies were conducted to understand how phosphate removal capabilities and adsorption mechanisms of biochars were affected by pyrolysis temperature and steam activation. Our results showed that the steam activation and pyrolysis temperature did not affect phosphate adsorption by the biochars. The four biochars removed <4% of phosphate from the aqueous solution, which were not affected by the pH of the solution and biochar application rate. The repulsion forces between biochar surfaces and phosphate ions were likely the cause of the low adsorption.http://dx.doi.org/10.1080/09542299.2016.1165080Black carboncharcoalsurface modificationengineered biochardesigner biocharsteam activation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kangyi Lou Anushka Upamali Rajapaksha Yong Sik Ok Scott X. Chang |
spellingShingle |
Kangyi Lou Anushka Upamali Rajapaksha Yong Sik Ok Scott X. Chang Pyrolysis temperature and steam activation effects on sorption of phosphate on pine sawdust biochars in aqueous solutions Chemical Speciation & Bioavailability Black carbon charcoal surface modification engineered biochar designer biochar steam activation |
author_facet |
Kangyi Lou Anushka Upamali Rajapaksha Yong Sik Ok Scott X. Chang |
author_sort |
Kangyi Lou |
title |
Pyrolysis temperature and steam activation effects on sorption of phosphate on pine sawdust biochars in aqueous solutions |
title_short |
Pyrolysis temperature and steam activation effects on sorption of phosphate on pine sawdust biochars in aqueous solutions |
title_full |
Pyrolysis temperature and steam activation effects on sorption of phosphate on pine sawdust biochars in aqueous solutions |
title_fullStr |
Pyrolysis temperature and steam activation effects on sorption of phosphate on pine sawdust biochars in aqueous solutions |
title_full_unstemmed |
Pyrolysis temperature and steam activation effects on sorption of phosphate on pine sawdust biochars in aqueous solutions |
title_sort |
pyrolysis temperature and steam activation effects on sorption of phosphate on pine sawdust biochars in aqueous solutions |
publisher |
Taylor & Francis Group |
series |
Chemical Speciation & Bioavailability |
issn |
0954-2299 2047-6523 |
publishDate |
2016-10-01 |
description |
Biochar can be used as an adsorbent for phosphate removal in aquatic environments to treat eutrophication problems. Designing biochars that have large phosphate adsorption capacity through altering pyrolysis conditions and applying activation techniques will improve phosphate removal efficiency. In this study, four pine sawdust biochars were produced at 300 and 550 °C with and without steam activation. Batch sorption experiments including isotherm and kinetic studies were conducted to understand how phosphate removal capabilities and adsorption mechanisms of biochars were affected by pyrolysis temperature and steam activation. Our results showed that the steam activation and pyrolysis temperature did not affect phosphate adsorption by the biochars. The four biochars removed <4% of phosphate from the aqueous solution, which were not affected by the pH of the solution and biochar application rate. The repulsion forces between biochar surfaces and phosphate ions were likely the cause of the low adsorption. |
topic |
Black carbon charcoal surface modification engineered biochar designer biochar steam activation |
url |
http://dx.doi.org/10.1080/09542299.2016.1165080 |
work_keys_str_mv |
AT kangyilou pyrolysistemperatureandsteamactivationeffectsonsorptionofphosphateonpinesawdustbiocharsinaqueoussolutions AT anushkaupamalirajapaksha pyrolysistemperatureandsteamactivationeffectsonsorptionofphosphateonpinesawdustbiocharsinaqueoussolutions AT yongsikok pyrolysistemperatureandsteamactivationeffectsonsorptionofphosphateonpinesawdustbiocharsinaqueoussolutions AT scottxchang pyrolysistemperatureandsteamactivationeffectsonsorptionofphosphateonpinesawdustbiocharsinaqueoussolutions |
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1724726550458269696 |