Green macroalgae from the Romanian coast of Black Sea: Physico-chemical characterization and future perspectives on their use as metal anions biosorbents

Filote, Catalina; Ungureanu, Gabriela; Boaventura, Rui A.R.; Santos, Sílvia C.R.; Volf, Irina; Botelho, Cidália M.S.

doi:10.1016/j.psep.2016.06.002

Cited by 25 publications

(9 citation statements)

References 35 publications

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“…It could also be assumed that the –OH, –C–N, –C–O, –C–N–C, –CO–NH, –NH 2 and –SH functional groups of the hybrid biosorbent were involved in the adsorption process of Pb 2+ . 31…”

Section: Resultsmentioning

confidence: 99%

“…It could also be assumed that the -OH, -C-N, -C-O, -C-N-C, -CO-NH, -NH 2 and -SH functional groups of the hybrid biosorbent were involved in the adsorption process of Pb 2+ . 31 SEM images of the hybrid biosorbent before and after loading of Pb 2+ (Fig. 2a and b) revealed that the surface was rough and the Pb 2+ adsorption did not affect the surface morphology of the hybrid biosorbent.…”

Section: Characterization Of Adsorbentsmentioning

confidence: 98%

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An innovative hybrid biosorbent composed of nano ZnO and marine macro algae Jania rubens embedded in an alginate/PVA matrix: insights into Pb²⁺ removal in water

Kumar

Sujatha²,

Skarka

et al. 2023

New J. Chem.

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Section: Resultsmentioning

confidence: 99%

Section: Characterization Of Adsorbentsmentioning

confidence: 98%

An innovative hybrid biosorbent composed of nano ZnO and marine macro algae Jania rubens embedded in an alginate/PVA matrix: insights into Pb²⁺ removal in water

Kumar

Sujatha²,

Skarka

et al. 2023

New J. Chem.

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“…The Fucus spiralis solid residue generated as waste after the separation of bioactive molecules was designated as a biosorbent for a cascade of sorption/desorption cycles. Several studies have dealt with the use of macroalgae to uptake pollutants from wastewater due to their effectiveness in the removal of low concentrations and relatively low cost in comparison to conventional adsorbents [ 73 , 74 , 75 , 76 , 77 ]. The literature has proven that brown macroalgae are very good biosorbents and are more effective in the removal of harmful pollutants than red and green algae [ 78 , 79 ].…”

Section: Resultsmentioning

confidence: 99%

Characterization and Bioactivity of Polysaccharides Separated through a (Sequential) Biorefinery Process from Fucus spiralis Brown Macroalgae

et al. 2022

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Marine macroalgae biomass is a valuable renewable resource that can be used for the development of bioeconomy through the valorisation of valuable compounds. The aim of the current study is separate macroalgal polysaccharides with bioactive properties from brown macroalgae Fucus spiralis based on a designed biocascading biorefinery approach. Thus, we applied an integrated processing method for the separation of fucoidan and alginate, in addition to characterization through IR spectroscopy and 1H NMR. The bioactivity potential (antioxidant activity using superoxide anion and DPPH radical scavenging analysis) of the two polysaccharides was evaluated, together with DNA binding studies performed though voltametric techniques and electronic spectroscopy titration. In terms of results, functional groups S=O (1226 cm−1), N=S=O (1136 cm−1) and C-O-SO3 (1024 cm−1), which are characteristic of fucoidan, were identified in the first polysaccharidic extract, whereas guluronic units (G) (1017 cm−1) and mannuronic units (M) (872 and 812 cm−1) confirmed the separation of alginate. The DNA binding studies of the isolated polysaccharides revealed an electrostatic and an intercalation interaction of DNA with fucoidan and alginate, respectively. Both antioxidant activity assays revealed improved antioxidant activity for both fucoidan and alginate compared to the standard α-tocopherol.

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“…Para el tratamiento a pH 5,0 la acumulación máxima de mercurio se alcanzó a las 96 horas de exposición y en todas las concentraciones, a excepción de los valores obtenidos a la concentración de 0,01 mg/L, en la que la acumulación de este metal fue menor. A valores de pH por debajo de 3,0 los hidrogeniones inhiben los sitios de anclaje de los enlaces iónicos del metal, lo que en consecuencia disminuye la capacidad de absorción de los sitios funcionales de la pared celular en el alga (Volesky, 2001;Filote et al, 2017).…”

Section: Patrones De Acumulación De Mercuriounclassified

EFECTO DEL pH EN LAS TASAS DE BIOACUMULACIÓN DE METALES PESADOS EN LA MACROALGA Bostrychia calliptera (Rhodomelaceae, Ceramiales).

2021

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Uno de los factores que más influye las características químicas de un metal en solución es el nivel de acidez. El pH por lo tanto, afecta la reactividad del ion y por ende, su interacción con los puntos de unión de la pared celular de la planta. Este estudio evaluó el efecto del pH en la capacidad de bioacumulación de metales pesados en el alga roja Bostrychia calliptera (Rhodophyta, Rhodomelaceae), expuesta a diferentes rangos de pH. Se sometieron talos del alga a diferentes concentraciones de mercurio (Hg) y Plomo (Pb) a concentraciones desde: 0,1 hasta 10 mg l-1, para Hg y desde 0,1 hasta 15 mg l-1 para Pb, durante periodos exposición de 0, 12, 24 y 96 horas para cada ion, bajo diferentes niveles de pH. Las concentraciones de metal fueron determinadas por espectrofotometría de absorción atómica de acuerdo a los métodos estándar APHA. Las mayores tasas de acumulación se encontraron cuando el alga estaba expuesta a pH 7.8 (tanto para Hg como para Pb) el cual es un nivel de pH muy cercano al medido en el área de estudio. La concentración de metal en el alga se incrementó de manera lineal hasta las 48 hrs, tiempo donde se evidenció una mayor eficiencia de acumulación durante el primer intervalo del periodo del bioensayo.

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Green macroalgae from the Romanian coast of Black Sea: Physico-chemical characterization and future perspectives on their use as metal anions biosorbents

Cited by 25 publications

References 35 publications

An innovative hybrid biosorbent composed of nano ZnO and marine macro algae Jania rubens embedded in an alginate/PVA matrix: insights into Pb²⁺ removal in water

An innovative hybrid biosorbent composed of nano ZnO and marine macro algae Jania rubens embedded in an alginate/PVA matrix: insights into Pb²⁺ removal in water

Characterization and Bioactivity of Polysaccharides Separated through a (Sequential) Biorefinery Process from Fucus spiralis Brown Macroalgae

EFECTO DEL pH EN LAS TASAS DE BIOACUMULACIÓN DE METALES PESADOS EN LA MACROALGA Bostrychia calliptera (Rhodomelaceae, Ceramiales).

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Green macroalgae from the Romanian coast of Black Sea: Physico-chemical characterization and future perspectives on their use as metal anions biosorbents

Cited by 25 publications

References 35 publications

An innovative hybrid biosorbent composed of nano ZnO and marine macro algae Jania rubens embedded in an alginate/PVA matrix: insights into Pb2+ removal in water

An innovative hybrid biosorbent composed of nano ZnO and marine macro algae Jania rubens embedded in an alginate/PVA matrix: insights into Pb2+ removal in water

Characterization and Bioactivity of Polysaccharides Separated through a (Sequential) Biorefinery Process from Fucus spiralis Brown Macroalgae

EFECTO DEL pH EN LAS TASAS DE BIOACUMULACIÓN DE METALES PESADOS EN LA MACROALGA Bostrychia calliptera (Rhodomelaceae, Ceramiales).

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An innovative hybrid biosorbent composed of nano ZnO and marine macro algae Jania rubens embedded in an alginate/PVA matrix: insights into Pb²⁺ removal in water

An innovative hybrid biosorbent composed of nano ZnO and marine macro algae Jania rubens embedded in an alginate/PVA matrix: insights into Pb²⁺ removal in water