The Use of Modified Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Valorisation of Olive Mill Wastewater from Slovenian Istria
Olive mill waste water (OMWW), a by-product created during the processing of olive oil, contains high amounts of polyphenolic compounds. If put to further use, these polyphenolic compounds could be a valuable resource for the speciality chemical industry. In order to achieve this, isolation of the p...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-07-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/12/14/2327 |
| _version_ | 1797416689718001664 |
|---|---|
| author | Kelly Peeters Ana Miklavčič Višnjevec Črtomir Tavzes |
| author_facet | Kelly Peeters Ana Miklavčič Višnjevec Črtomir Tavzes |
| author_sort | Kelly Peeters |
| collection | DOAJ |
| description | Olive mill waste water (OMWW), a by-product created during the processing of olive oil, contains high amounts of polyphenolic compounds. If put to further use, these polyphenolic compounds could be a valuable resource for the speciality chemical industry. In order to achieve this, isolation of the polyphenolic compounds from OMWW is needed. Several techniques for this process already exist, the most widely used of which is adsorption beds. This research describes new ways of collecting polyphenolic compounds by using unmodified iron oxide (Fe<sub>3</sub>O<sub>4</sub>) particles and Fe<sub>3</sub>O<sub>4</sub> modified with silica gel (Fe<sub>3</sub>O<sub>4</sub>@C18), citric acid (Fe<sub>3</sub>O<sub>4</sub>@CA), and sodium dodecyl sulphate (Fe<sub>3</sub>O<sub>4</sub>@SDS). This approach is superior to adsorption beds since it can be used in a continuous system without clogging, while the nano-sized shapes create a high surface area for adsorption. The results of this study show that, if used in a loop system of several adsorption and desorption cycles, (un)modified Fe<sub>3</sub>O<sub>4</sub> has the potential to collect high concentrations of polyphenolic compounds. A combination of different modifications of the Fe<sub>3</sub>O<sub>4</sub> particles is also beneficial, as these combinations can be tailored to allow for the removal of specific polyphenolic compounds. |
| first_indexed | 2024-03-09T06:06:49Z |
| format | Article |
| id | doaj.art-ee2899ca80bc4aa5a6c50dc161be7340 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T06:06:49Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-ee2899ca80bc4aa5a6c50dc161be73402023-12-03T12:02:59ZengMDPI AGNanomaterials2079-49912022-07-011214232710.3390/nano12142327The Use of Modified Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Valorisation of Olive Mill Wastewater from Slovenian IstriaKelly Peeters0Ana Miklavčič Višnjevec1Črtomir Tavzes2InnoRenew CoE, Livade 6a, 6310 Izola, SloveniaFaculty of Mathematics Natural Sciences and Information Technologies, University of Primorska, Glagoljaška 8, 6000 Koper, SloveniaInnoRenew CoE, Livade 6a, 6310 Izola, SloveniaOlive mill waste water (OMWW), a by-product created during the processing of olive oil, contains high amounts of polyphenolic compounds. If put to further use, these polyphenolic compounds could be a valuable resource for the speciality chemical industry. In order to achieve this, isolation of the polyphenolic compounds from OMWW is needed. Several techniques for this process already exist, the most widely used of which is adsorption beds. This research describes new ways of collecting polyphenolic compounds by using unmodified iron oxide (Fe<sub>3</sub>O<sub>4</sub>) particles and Fe<sub>3</sub>O<sub>4</sub> modified with silica gel (Fe<sub>3</sub>O<sub>4</sub>@C18), citric acid (Fe<sub>3</sub>O<sub>4</sub>@CA), and sodium dodecyl sulphate (Fe<sub>3</sub>O<sub>4</sub>@SDS). This approach is superior to adsorption beds since it can be used in a continuous system without clogging, while the nano-sized shapes create a high surface area for adsorption. The results of this study show that, if used in a loop system of several adsorption and desorption cycles, (un)modified Fe<sub>3</sub>O<sub>4</sub> has the potential to collect high concentrations of polyphenolic compounds. A combination of different modifications of the Fe<sub>3</sub>O<sub>4</sub> particles is also beneficial, as these combinations can be tailored to allow for the removal of specific polyphenolic compounds.https://www.mdpi.com/2079-4991/12/14/2327polyphenolic compoundsolive mill waste watermodified iron (IIIII) oxide particlesadsorption and desorptionmagnetic collection |
| spellingShingle | Kelly Peeters Ana Miklavčič Višnjevec Črtomir Tavzes The Use of Modified Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Valorisation of Olive Mill Wastewater from Slovenian Istria Nanomaterials polyphenolic compounds olive mill waste water modified iron (II III) oxide particles adsorption and desorption magnetic collection |
| title | The Use of Modified Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Valorisation of Olive Mill Wastewater from Slovenian Istria |
| title_full | The Use of Modified Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Valorisation of Olive Mill Wastewater from Slovenian Istria |
| title_fullStr | The Use of Modified Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Valorisation of Olive Mill Wastewater from Slovenian Istria |
| title_full_unstemmed | The Use of Modified Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Valorisation of Olive Mill Wastewater from Slovenian Istria |
| title_short | The Use of Modified Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Valorisation of Olive Mill Wastewater from Slovenian Istria |
| title_sort | use of modified fe sub 3 sub o sub 4 sub particles to recover polyphenolic compounds for the valorisation of olive mill wastewater from slovenian istria |
| topic | polyphenolic compounds olive mill waste water modified iron (II III) oxide particles adsorption and desorption magnetic collection |
| url | https://www.mdpi.com/2079-4991/12/14/2327 |
| work_keys_str_mv | AT kellypeeters theuseofmodifiedfesub3subosub4subparticlestorecoverpolyphenoliccompoundsforthevalorisationofolivemillwastewaterfromslovenianistria AT anamiklavcicvisnjevec theuseofmodifiedfesub3subosub4subparticlestorecoverpolyphenoliccompoundsforthevalorisationofolivemillwastewaterfromslovenianistria AT crtomirtavzes theuseofmodifiedfesub3subosub4subparticlestorecoverpolyphenoliccompoundsforthevalorisationofolivemillwastewaterfromslovenianistria AT kellypeeters useofmodifiedfesub3subosub4subparticlestorecoverpolyphenoliccompoundsforthevalorisationofolivemillwastewaterfromslovenianistria AT anamiklavcicvisnjevec useofmodifiedfesub3subosub4subparticlestorecoverpolyphenoliccompoundsforthevalorisationofolivemillwastewaterfromslovenianistria AT crtomirtavzes useofmodifiedfesub3subosub4subparticlestorecoverpolyphenoliccompoundsforthevalorisationofolivemillwastewaterfromslovenianistria |