Baltic Fucus vesiculosus as potential bio-sorbent for Zn removal

Mechanism insight

Loredana Brinza*, Kalotina Geraki, Corneliu Cojocaru, Susan Løvstad Holdt, Mariana Neamtu

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

This research aimed to find the best phenotype of the brown algae Fucus vesiculosus (kelp) which has the greater potential to become a sorption byproduct for Zn removal from contaminated waters. Thus, the Zn uptake capacity and sorption mechanisms of the kelp collected from the Baltic Sea shore was, for the first time, investigated under various conditions, and compared to the phenotype habiting on the Irish Sea shore. Sorption studies were performed investigating the effect of algal dosage, Zn sources as well as algal harvesting time of the year on Zn uptake capacity. The results suggested that the Baltic algae is a better bio-sorbent for Zn uptake. Sorption mechanisms were studied by employing various indirect and direct approaches, more importantly, including high resolution synchrotron X-Ray Fluorescence and X-Ray Absorption Spectroscopy (XAS) and molecular modelling (MM). The results revealed that alginate and cellulose are among the main polysaccharide bonding Zn at algal surface, via coordination with O atoms from carboxyl and hydroxyl groups. XAS results giving direct measurements of Zn bonding environment on algal surface are supported by MM outputs and suggested that Zn is surrounded by ca. 5 O atoms at interatomic distances varying from 1.94 to 2.02 Å. The results contribute to understanding sorption mechanisms which can further lead to finding the best eluent for Zn desorption from the used biomass, bio sorbent reconditioning and reuse in multiple sorption desorption cycles as well as process optimization before industrial scaling up.

Original languageEnglish
Article number124652
JournalChemosphere
Volume238
Number of pages11
ISSN0045-6535
DOIs
Publication statusPublished - 2020

Keywords

  • Baltic vs. Irish Fucus vesiculosus
  • Better Zn sorption
  • Sorption mechanism
  • XAS
  • Zn source chemistry

Cite this

Brinza, Loredana ; Geraki, Kalotina ; Cojocaru, Corneliu ; Holdt, Susan Løvstad ; Neamtu, Mariana. / Baltic Fucus vesiculosus as potential bio-sorbent for Zn removal : Mechanism insight. In: Chemosphere. 2020 ; Vol. 238.
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abstract = "This research aimed to find the best phenotype of the brown algae Fucus vesiculosus (kelp) which has the greater potential to become a sorption byproduct for Zn removal from contaminated waters. Thus, the Zn uptake capacity and sorption mechanisms of the kelp collected from the Baltic Sea shore was, for the first time, investigated under various conditions, and compared to the phenotype habiting on the Irish Sea shore. Sorption studies were performed investigating the effect of algal dosage, Zn sources as well as algal harvesting time of the year on Zn uptake capacity. The results suggested that the Baltic algae is a better bio-sorbent for Zn uptake. Sorption mechanisms were studied by employing various indirect and direct approaches, more importantly, including high resolution synchrotron X-Ray Fluorescence and X-Ray Absorption Spectroscopy (XAS) and molecular modelling (MM). The results revealed that alginate and cellulose are among the main polysaccharide bonding Zn at algal surface, via coordination with O atoms from carboxyl and hydroxyl groups. XAS results giving direct measurements of Zn bonding environment on algal surface are supported by MM outputs and suggested that Zn is surrounded by ca. 5 O atoms at interatomic distances varying from 1.94 to 2.02 {\AA}. The results contribute to understanding sorption mechanisms which can further lead to finding the best eluent for Zn desorption from the used biomass, bio sorbent reconditioning and reuse in multiple sorption desorption cycles as well as process optimization before industrial scaling up.",
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author = "Loredana Brinza and Kalotina Geraki and Corneliu Cojocaru and Holdt, {Susan L{\o}vstad} and Mariana Neamtu",
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language = "English",
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Baltic Fucus vesiculosus as potential bio-sorbent for Zn removal : Mechanism insight. / Brinza, Loredana; Geraki, Kalotina; Cojocaru, Corneliu; Holdt, Susan Løvstad; Neamtu, Mariana.

In: Chemosphere, Vol. 238, 124652, 2020.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Baltic Fucus vesiculosus as potential bio-sorbent for Zn removal

T2 - Mechanism insight

AU - Brinza, Loredana

AU - Geraki, Kalotina

AU - Cojocaru, Corneliu

AU - Holdt, Susan Løvstad

AU - Neamtu, Mariana

PY - 2020

Y1 - 2020

N2 - This research aimed to find the best phenotype of the brown algae Fucus vesiculosus (kelp) which has the greater potential to become a sorption byproduct for Zn removal from contaminated waters. Thus, the Zn uptake capacity and sorption mechanisms of the kelp collected from the Baltic Sea shore was, for the first time, investigated under various conditions, and compared to the phenotype habiting on the Irish Sea shore. Sorption studies were performed investigating the effect of algal dosage, Zn sources as well as algal harvesting time of the year on Zn uptake capacity. The results suggested that the Baltic algae is a better bio-sorbent for Zn uptake. Sorption mechanisms were studied by employing various indirect and direct approaches, more importantly, including high resolution synchrotron X-Ray Fluorescence and X-Ray Absorption Spectroscopy (XAS) and molecular modelling (MM). The results revealed that alginate and cellulose are among the main polysaccharide bonding Zn at algal surface, via coordination with O atoms from carboxyl and hydroxyl groups. XAS results giving direct measurements of Zn bonding environment on algal surface are supported by MM outputs and suggested that Zn is surrounded by ca. 5 O atoms at interatomic distances varying from 1.94 to 2.02 Å. The results contribute to understanding sorption mechanisms which can further lead to finding the best eluent for Zn desorption from the used biomass, bio sorbent reconditioning and reuse in multiple sorption desorption cycles as well as process optimization before industrial scaling up.

AB - This research aimed to find the best phenotype of the brown algae Fucus vesiculosus (kelp) which has the greater potential to become a sorption byproduct for Zn removal from contaminated waters. Thus, the Zn uptake capacity and sorption mechanisms of the kelp collected from the Baltic Sea shore was, for the first time, investigated under various conditions, and compared to the phenotype habiting on the Irish Sea shore. Sorption studies were performed investigating the effect of algal dosage, Zn sources as well as algal harvesting time of the year on Zn uptake capacity. The results suggested that the Baltic algae is a better bio-sorbent for Zn uptake. Sorption mechanisms were studied by employing various indirect and direct approaches, more importantly, including high resolution synchrotron X-Ray Fluorescence and X-Ray Absorption Spectroscopy (XAS) and molecular modelling (MM). The results revealed that alginate and cellulose are among the main polysaccharide bonding Zn at algal surface, via coordination with O atoms from carboxyl and hydroxyl groups. XAS results giving direct measurements of Zn bonding environment on algal surface are supported by MM outputs and suggested that Zn is surrounded by ca. 5 O atoms at interatomic distances varying from 1.94 to 2.02 Å. The results contribute to understanding sorption mechanisms which can further lead to finding the best eluent for Zn desorption from the used biomass, bio sorbent reconditioning and reuse in multiple sorption desorption cycles as well as process optimization before industrial scaling up.

KW - Baltic vs. Irish Fucus vesiculosus

KW - Better Zn sorption

KW - Sorption mechanism

KW - XAS

KW - Zn source chemistry

U2 - 10.1016/j.chemosphere.2019.124652

DO - 10.1016/j.chemosphere.2019.124652

M3 - Journal article

VL - 238

JO - Chemosphere

JF - Chemosphere

SN - 0045-6535

M1 - 124652

ER -