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AuthorNozha, Abid
AuthorMasmoudi, Mohamed Ali
AuthorMegdiche, Marwa
AuthorBarakat, Abdellatif
AuthorEllouze, Mariam
AuthorChamkha, Mohamed
AuthorKsibi, Mohamed
AuthorSayadi, Sami
Available date2022-08-16T05:18:45Z
Publication Date2022-05-31
Publication NameChemical Engineering Research and Design
Identifierhttp://dx.doi.org/10.1016/j.cherd.2022.02.029
CitationAbid, N., Masmoudi, M. A., Megdiche, M., Barakat, A., Ellouze, M., Chamkha, M., ... & Sayadi, S. (2022). Biochar from olive mill solid waste as an eco-friendly adsorbent for the removal of polyphenols from olive mill wastewater. Chemical Engineering Research and Design, 181, 384-398.
ISSN02638762
URIhttps://www.sciencedirect.com/science/article/pii/S0263876222000922
URIhttp://hdl.handle.net/10576/33092
AbstractIn Tunisia, olive mill waste water (OMW) is discharged into evaporation ponds where they turn into solid waste (OMSW) and become a serious threat to the environment. This paper addresses for the first time how to valorize OMSW into a biochar (BC) that can be used as an adsorbent aiming at either the recovery or the removal of polyphenols from the OMW. In this work, BC was produced through the pyrolysis of OMSW. Response Surface Methodology (RSM) approach was used for optimization of the process parameters. Analysis of variance revealed that all four parameters (pH, adsorbent dosage, pyrolysis temperature and polyphenols loading) had a significant effect on the adsorption (p<0.05). pH proved to be the most highly significant variable. The nonlinear Freundlich isotherm model was found to better describe the experimental adsorption process (R2=0.9911), while maximum polyphenol adsorption at 30°C was 140.47mg/g. Indeed, OMW is known as a source of natural antioxidant such as Hydroxytyrosol. In this work, hydrxytyrosol proved to have a high adsorption affinity for the BC. Therefore, adsorption using BC is an appropriate technique that maximizes the recuperation of hydroxytyrosol. After detoxification, OMW is invested for a variety of applications.
SponsorThis study was supported by the project ARIMNet2 PYRODIGEST, which is funded through the ARIMNet2 2017 Joint Call by the MHESRT funding agency. The ARIMNet2 (ERANET) program received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement no. 618127.
Languageen
PublisherElsevier
SubjectOlive mill wastewater
Adsorption
Olive mill solid wastes
Biochar
Polyphenolic compounds
Central composite design
TitleBiochar from olive mill solid waste as an eco-friendly adsorbent for the removal of polyphenols from olive mill wastewater
TypeArticle
Pagination384-398
Volume Number181
dc.accessType Open Access


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