Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/19677
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Novais, Rui M. | pt |
dc.contributor.author | Buruberri, L. H. | pt |
dc.contributor.author | Seabra, M. P. | pt |
dc.contributor.author | Bajare, D. | pt |
dc.contributor.author | Labrincha, J. A. | pt |
dc.date.accessioned | 2017-12-07T19:21:10Z | - |
dc.date.issued | 2016 | pt |
dc.identifier.issn | 0959-6526 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/19677 | - |
dc.description.abstract | In this work novel, porous biomass fly ash-containing geopolymers with high pH buffer capacity and tailored alkalis leaching were produced by using hydrogen peroxide as blowing agent. Results demonstrate that the geopolymers leaching rate can be controlled by the hydrogen peroxide content and by the solids-to-liquid ratio during geopolymers preparation. Total leaching of hydroxyl ions from the porous geopolymers ranged between 0.0104 and 0.0180 mol/(dm(3) g). Higher solids-to-liquid ratios promoted a gentler alkalis leaching from the geopolymers, while higher porosities shifted the initial pH towards higher values without compromising their buffering ability. The excellent ability to control pH over time shown by these novel geopolymers demonstrates their potential as pH regulators in applications where high buffer capacity is required. Furthermore the reuse of biomass fly ash in these innovative materials reduces the environmental footprint associated with this waste disposal. (C) 2016 Elsevier Ltd. All rights reserved. | pt |
dc.language.iso | eng | pt |
dc.publisher | ELSEVIER SCI LTD | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/5876/147332/PT | pt |
dc.rights | restrictedAccess | por |
dc.subject | LOW THERMAL-CONDUCTIVITY | pt |
dc.subject | RED MUD | pt |
dc.subject | METAKAOLIN | pt |
dc.subject | ACTIVATION | pt |
dc.subject | POROSITY | pt |
dc.subject | RATIOS | pt |
dc.subject | TILES | pt |
dc.subject | WATER | pt |
dc.title | Novel porous fly ash-containing geopolymers for pH buffering applications | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.firstPage | 395 | pt |
degois.publication.lastPage | 404 | pt |
degois.publication.title | JOURNAL OF CLEANER PRODUCTION | pt |
degois.publication.volume | 124 | pt |
dc.date.embargo | 10000-01-01 | - |
dc.relation.publisherversion | 10.1016/j.jclepro.2016.02.114 | pt |
dc.identifier.doi | 10.1016/j.jclepro.2016.02.114 | pt |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Novel porous fly ash-containing geopolymers for pH buffering applications_10.1016j.jclepro.2016.02.114.pdf | 3.46 MB | Adobe PDF |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.