Protonated Biomass of the Brown Seaweed Cystoseira tamariscifolia: A Potential Biosorbent for Toxic Chromium Ions Removal

Sabour, Brahim; Belattmani, Z.; Atouani, Samir El; Kaidi, Soukaina; Bentiss, Fouad; Tahiri, S.; Reani, Abdeltif

doi:10.3923/rjes.2018.106.113

Cited by 7 publications

(1 citation statement)

References 20 publications

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“…Hence, it may be inferred that microalgae, adapted to a particular pollutant are suitable for the latter's maximal bioremediation-as evinced in various studies. On a similar vein, a decent removal capacity of Cr(VI) at 143 mg/g for Sargassum muticum and 82 mg Cr(VI) g −1 for Cystoseira tamariscifolia biomass was reported by El Atouani et al ( 2016) and Belattmania et al (2018) respectively in their endeavors to probe into the prospects of harnessing macroalgae for bioremediation of Cr(VI). Pertinently, the results were not very encouraging when compared to other microalgae-based biosorption (Table 5), primarily owing to the higher active surface area (surface area to volume ratio) of the latter.…”

Section: Comparative Note On Cr(vi) Removal By the Microalgabased Bio...supporting

confidence: 62%

Optimization of chromium(VI) removal by indigenous microalga (Chlamydomonas sp.)‐based biosorbent using response surface methodology

Ayele

Suresh

Benor³

et al. 2021

Water Environment Research

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Phycoremediation of heavy metals has garnered considerable recent research interest. In this study, an indigenous microalga (Chlamydomonas sp.)‐based biosorbent was employed for biosorption of Cr(VI) dissolved solids (Cr(VI)‐DS), optimized using response surface methodology (RSM). The effects of microalga concentration, pH, and contact time were studied with 250 mg Cr(VI)‐DS L−1. The biosorption of Cr(VI)‐DS was higher at acidic pH (94.17% at pH 4) than at alkaline conditions (68.53% at pH 10). The interaction of pH and microalga concentration exerted significant (p < 0.05) influence on the biosorption. Under the optimized parameters of 1.5 g microalga L−1, pH 4, and contact time of 30 min, a predicted biosorption of 91.31% and biosorption capacity of 152 mg Cr(VI)‐DS g−1 biomass were documented. FTIR analysis attested the electronegative surface functional groups of the microalgae biomass, bracketed together with its high biosorption potency. The study evinced the potential of the indigenous microalga for remediation of hexavalent chromium. Practitioner points Indigenous Ethiopian microalga (Chlamydomonas sp.) exhibited 94% Cr(VI) abatement with biosorption capacity of 152 mg Cr(VI) g−1. FTIR analysis of the biosorbent divulged the presence of electronegative functional groups (amino, carboxyl, hydroxyl, and carbonyl groups). Higher biosorption of Cr(VI)‐DS under acidic pH (94.17% at pH 4) than alkaline pH (68.53% at pH 10). Significant (p < 0.05) interaction effect of pH and biomass concentration on the biosorption, evinced in RSM optimization 91% Cr(VI) removal achieved under optimal conditions of 1.5 g biosorbent L−1, 30 min of contact time, and pH 4.

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Section: Comparative Note On Cr(vi) Removal By the Microalgabased Bio...supporting

confidence: 62%

Optimization of chromium(VI) removal by indigenous microalga (Chlamydomonas sp.)‐based biosorbent using response surface methodology

Ayele

Suresh

Benor³

et al. 2021

Water Environment Research

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Antimicrobial and anti-biofilm activity of silver nanoparticles biosynthesized with Cystoseira algae extracts

et al. 2023

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Antimicrobial resistance is an ever-growing global concern to public health with no clear or immediate solution. Silver nanoparticles (AgNPs) have long been proposed as efficient agents to fight the growing number of antibiotic-resistant strains. However, the synthesis of these particles is often linked to high costs and the use of toxic, hazardous chemicals, with environmental and health impact. In this study, we successfully produced AgNPs by green synthesis with the aid of the extract of two brown algae—Cystoseira baccata (CB) and Cystoseira tamariscifolia (CT)—and characterized their physico-chemical properties. The NPs produced in both cases (Ag@CB and Ag@CT) present similar sizes, with mean diameters of around 22 nm. The antioxidant activity of the extracts and the NPs was evaluated, with the extracts showing important antioxidant activity. The bacteriostatic and bactericidal properties of both Ag@CB and Ag@CT were tested and compared with gold NPs produced in the same algae extracts as previously reported. AgNPs demonstrated the strongest bacteriostatic and bactericidal properties, at concentrations as low as 2.16 µg/mL against Pseudomonas aeruginosa and Escherichia coli. Finally, the capacity of these samples to prevent the formation of biofilms characteristic of infections with a poorer outcome was assessed, obtaining similar results. This work points towards an alternative for the treatment of bacterial infections, even biofilm-inducing, with the possibility of minimizing the risk of drug resistance, albeit the necessary caution implied using metallic NPs. Graphical abstract

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Carbon microspheres derived from walnut shell: Rapid and remarkable uptake of heavy metal ions, molecular computational study and surface modeling

et al. 2019

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Protonated Biomass of the Brown Seaweed Cystoseira tamariscifolia: A Potential Biosorbent for Toxic Chromium Ions Removal

Cited by 7 publications

References 20 publications

Optimization of chromium(VI) removal by indigenous microalga (Chlamydomonas sp.)‐based biosorbent using response surface methodology

Optimization of chromium(VI) removal by indigenous microalga (Chlamydomonas sp.)‐based biosorbent using response surface methodology

Antimicrobial and anti-biofilm activity of silver nanoparticles biosynthesized with Cystoseira algae extracts

Carbon microspheres derived from walnut shell: Rapid and remarkable uptake of heavy metal ions, molecular computational study and surface modeling

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