Decolorization of Methylene Blue and Malachite Green by Immobilized Desmodesmus sp. Isolated from North Jordan

Al-Fawwaz, Abdullah; Abdullah, Mufida

doi:10.7763/ijesd.2016.v7.748

Cited by 65 publications

(16 citation statements)

References 35 publications

(35 reference statements)

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“…Carbohydrates from microalgae show widely varying structures and biological activities. Some find commercial applications in cosmetics and skin‐care products, emulsifiers, the food industry and medicine . Some sulfated polysaccharides in particular have remarkable medical applications …”

Section: Lipidsmentioning

confidence: 99%

Microalgae cultivation and metabolites production: a comprehensive review

Vuppaladadiyam

Prinsen

Raheem

et al. 2018

Biofuels Bioprod Bioref

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Microalgae have important potential in the bio‐based industry. However, their light‐utilization mechanisms are still not fully understood. Together with knowledge of their metabolic pathways and their responses in carbon partitioning to different primary metabolites (carbohydrates, lipids and proteins), this information is essential if their potential and profitability are to be better exploited. The first part of this review describes the techniques used for microalgae cultivation and the growth factors that determine their productivity, one of the most important factors in techno‐economic assessment studies of microalgae production systems. In the second part, a closer look is taken at their chemical composition in relation to the biosynthesis of primary and secondary metabolites. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd

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Section: Lipidsmentioning

confidence: 99%

Microalgae cultivation and metabolites production: a comprehensive review

Vuppaladadiyam

Prinsen

Raheem

et al. 2018

Biofuels Bioprod Bioref

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“…Due to these effects, it is important to remove methylene blue from wastewaters. Conventional methods of methylene blue removal, such as chemical oxidation and adsorption, chemical precipitation and chemical coagulation, have limitations to their use, because they are cost-intensive and produce large amounts of solid waste, creating a higher pollution potential than that of the effluents treated (Al-Fawwaz and Abdullah, 2016).…”

Section: Introductionmentioning

confidence: 99%

Activated biomass of the green microalga Chlamydomonas variabilis as an efficient biosorbent to remove methylene blue dye from aqueous solutions

Moghazy

2019

WSA

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The raw and activated biomass of a green microalga, Chlamydomonas variabilis, were investigated as adsorbents for the removal of methylene blue (MB) dye from aqueous solutions. Chlamydomonas variabilis was isolated and cultivated to obtain a sufficient algal biomass. The collected biomass was first oven-dried and then activated by H2SO4. The results obtained showed that the optimum adsorption of MB occurred over 30 min of contact time at pH 7 and an biosorbent dose of 1.5 and 1.0 g·L−1 of dried biomass and activated biosorbent, respectively. Point of zero charge (pHpzc) was recorded at pH 6.8 and 6.9 for dried and activated biomass, respectively. The activated biomass was a more effective biosorbent than was the dried biomass: At a MB concentration of 82.4 mg·L−1, the minimum removal was greater than 98% using 1 g·L−1 activated biomass with a maximum adsorption capacity (qmax) of 115 mg·g−1, whereas at a MB concentration of 56.4 mg·L−1, the maximum removal did not exceed 80.8% using 1.5 g·L−1 raw biomass with a qmax of 18.3 mg·g−1. Furthermore, the Freundlich and Langmuir isotherm models of adsorption showed a better model fit when using activated biomass than when using raw biomass, with the former yielding R2 values greater than 0.9. The kinetic data suggest that the adsorption of MB follows the pseudo-second-order equation better than the pseudo-first-order one. This study demonstrates that the activated biomass of Chlamydomonas variabilis can be used as an effective biosorbent for the treatment of dye-containing wastewater streams.

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“…Dyes are substances with high application potential in the most diverse areas, mainly to color the final products of textile, precious stones, leather, paper, plastics and food. For example, it is estimated that there are more than 100,000 synthetic dyes, with an annual production of more than 700,000 tons worldwide, generating a significant amount of wastewater 1 . In addition, these colored waters are characterized by complex aromatic compounds, making their biodegradation difficult, becoming an environmental liability.…”

mentioning

confidence: 99%

Iron oxide nanocatalyst with titanium and silver nanoparticles: Synthesis, characterization and photocatalytic activity on the degradation of Rhodamine B dye

Muraro

Mortari

Vizzotto

et al. 2020

Sci Rep

112

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nowadays, there is a growing concern about the environmental impacts of colored wastewater. thus, the present work aims the synthesis, characterization and determination of photocatalytic activity of iron oxide (fe 2 o 3) nanocatalyst, evaluating the effect of hybridization with titanium (TiNPs-Fe 2 o 3) and silver (AgNPs-Fe 2 o 3) nanoparticles, on the degradation of Rhodamine B dye (RhB). nanocatalysts were characterized by XRD, SeM, teM, ftiR, n 2 porosimetry (Bet/BJH method), zeta potential and DRS. photocatalytic tests were performed in a slurry reactor, with the nanocatalyst in suspension, using RhB as a target molecule, under ultraviolet (UV) and visible radiation. therefore, the photocatalytic activity of the nanocatalysts (non-doped and hybridized) was evaluated in these ideal conditions, where the AgNPs-Fe 2 o 3 sample showed the best photocatalytic activity with a degradation of 94.1% (k = 0.0222 min −1 , under UV) and 58.36% (k = 0.007 min −1 , under visible), while under the same conditions, the tio 2-P25 commercial catalyst showed a degradation of 61.5% (k = 0.0078 min −1) and 44.5% (k = 0.0044 min −1), respectively. According with the ideal conditions determined, reusability of the AgNPs-Fe 2 o 3 nanocatalyst was measured, showing a short reduction (about 8%) of its photocatalytic activity after 5 cycles. Thus, the Fe 2 o 3 nanocatalyst can be considered a promising catalyst in the heterogeneous photocatalysis for application in the degradation of organic dyes in aqueous solution.

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Decolorization of Methylene Blue and Malachite Green by Immobilized Desmodesmus sp. Isolated from North Jordan

Cited by 65 publications

References 35 publications

Microalgae cultivation and metabolites production: a comprehensive review

Microalgae cultivation and metabolites production: a comprehensive review

Activated biomass of the green microalga Chlamydomonas variabilis as an efficient biosorbent to remove methylene blue dye from aqueous solutions

Iron oxide nanocatalyst with titanium and silver nanoparticles: Synthesis, characterization and photocatalytic activity on the degradation of Rhodamine B dye

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