Biosorption Studies of Methylene Blue by Mediterranean Algae Carolina and Its Chemically Modified Forms. Linear and Nonlinear Models' Prediction Based on Statistical Error Calculation

Hammud, Hassan H.; Fayoumi, Lina; Holail, Hanafy; Mostafa, El-Sayed M. E.

doi:10.5539/ijc.v3n4p147

Cited by 29 publications

(11 citation statements)

References 16 publications

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“…5. pH is considered to be the most important parameter affecting dye biosorption from solutions (Hammud et al, 2011;Farzadkia et al, 2012). Here, the best adsorption was achieved at pH 7, with percentage removal of 79.9% and 100% for raw and activated biomasses, respectively.…”

Section: Determination Of the Optimum Conditions For Dye Removalmentioning

confidence: 91%

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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Section: Determination Of the Optimum Conditions For Dye Removalmentioning

confidence: 91%

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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“…They decrease light penetration and photosynthesis, which causes problems to aquatic groups (Hammud, 2011). As synthetic dyes are usually designed to be chemically and thermally stable, dye wastewater needs to be disposed of accordingly and should not be discharged directly into bodies of water (Kooh et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Bioremoval of toxic dye by using different marine macroalgae

Omar¹,

El-Gendy²,

Al-Ahmary³

2018

Turk J Bot

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The removal of malachite green dye from aqueous solution by Ulva lactuca, Sargassum crassifolium, and Gracilaria corticata has been demonstrated in order to examine their potential use as low-cost adsorbents. The optimum pH (8.0), temperature (25 °C), contact time (150 min), and biomass (2.0 g) for removal of dye by algae are reported. The maximum removal percentage of the dye ranged between 95.6% and 98.3% by using Sargassum crassifolium at the optimal conditions. Minimum removal of dye by algae (69%-77.1%) was observed with the high dye concentration of 35 mg L -1 at the optimal conditions. Adsorption of the dye by using the biomass was found to fit well with Langmuir and Freundlich isotherms. The adsorption reaction was spontaneous, exothermic, and highly favorable by the tested algae. The FT-IR analyses confirmed that hydroxyl, carboxyl, amino, and carbonyl groups were responsible for the dye binding process. Scanning electron microscopy showed great porosity on the algal surface, which allows the free passage of dye molecules. The biomass of brown algae was the most effective in the removal of malachite green, followed by green and red algae. The highest affinity of the brown biomass for dye removal may be due to its high binding site affinity, the negative free energy of adsorption, and the great pores on its surface.

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“…The biosorption process involves a solid phase (biosorbent: algae) and a liquid phase containing a dissolved species to be sorbed (sorbate: diuron). The uptake of diuron by biosorbent ( q ) is defined as the amount of diuron in (mg) bound to 1 g of bisorbent according to the following equation :

q true(\frac{m g}{g} true) = \frac{(C_{normali} - C_{normalf}) \times V}{m}

…”

Section: Methodsmentioning

confidence: 99%

“…The use of algae for the removal of dyes from its aqueous solution is a recent method for treatment of wastewater [26]. Marine algae have been also reported to have high metal binding capacities, due to the presence of polysaccharides, proteins, or lipid on the cell wall surface containing functional groups such as amino, hydroxyl, carboxyl, and sulfate, which can act as binding sites for metals [26,27].…”

Section: Introductionmentioning

confidence: 99%

Parametric, equilibrium, and kinetic studies on biosorption of diuron byAnabaena sphaericaandScenedesmus obliquus

Abdel‐Aty

Gad‐Allah

Ali

et al. 2014

Environ. Prog. Sustainable Energy

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In this study, the bioremoval potential of diuron by the cyanobacterium, Anabaena sphaerica, and the green algae, Scenedesmus obliquus, was investigated under different experimental conditions, including pH, diuron concentrations, contact time, and biomass dosage. Approximately, <80% (40 mg/L) of the analyte was removed by 1 g/L of both species within 80 min at pH = 3. The equilibrium data were well fitted to Langmuir isotherm model, indicating a probable monolayer biosorption of diuron on the biomass surface. Biosorption kinetics was best described by pseudo‐first‐order kinetic model. The biosorption mechanism of diuron over the studied biosorbents was found to be controlled by the external mass transfer. © 2014 American Institute of Chemical Engineers Environ Prog, 34: 504–511, 2015

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Biosorption Studies of Methylene Blue by Mediterranean Algae Carolina and Its Chemically Modified Forms. Linear and Nonlinear Models' Prediction Based on Statistical Error Calculation

Cited by 29 publications

References 16 publications

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

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

Bioremoval of toxic dye by using different marine macroalgae

Parametric, equilibrium, and kinetic studies on biosorption of diuron byAnabaena sphaericaandScenedesmus obliquus

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