Equilibrium, kinetic and thermodynamic biosorption studies of Hg(II) on red algal biomass of<i>Porphyridium cruentum</i>

Zaib, Maria; Athar, Makshoof; Saeed, Asma; Farooq, Umar; Salman, Muhammad; Makshoof, M. Nouman

doi:10.1080/17518253.2016.1185166

Cited by 22 publications

(7 citation statements)

References 43 publications

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“…At higher pH (pH < 6), a reduction in biosorption was also observed. This is because, at high pH values, there is a probability for precipitation of metal ions as salts or hydroxides in solution (Zaib et al 2016). Similar results were observed using other strains of B. subtils, where the pH pzc of the biosorbent was 1.5 (Ng 2018).…”

supporting

confidence: 81%

Structural Changes of Bacillus subtilis Biomass on Biosorption of Iron (II) from Aqueous Solutions: Isotherm and Kinetic Studies

Kanamarlapudi

Muddada

2019

Polish Journal of Microbiology

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Various microbial biomasses have been employed as biosorbents. Bacterial biomass has added advantages because of easy in production at a low cost. The study investigated the biosorption of iron from aqueous solutions by Bacillus subtilis. An optimum biosorption capacity of 7.25 mg of the metal per gram of the biosorbent was obtained by the Inductive Coupled Plasma Optical Emission Spectroscopy (ICP-OES) under the experimental conditions of initial metal concentration of 100 mg/l, pH 4.5, and biomass dose of 1 g/l at 30°C for 24 hrs. The data showed the best fit with the Freundlich isotherm model while following pseudo-first-order kinetics. Scanning Electron Microscope (SEM) and Energy Dispersive X-ray (EDX) analysis confirmed iron biosorption as precipitates on the bacterial surface, and as a peak in the EDX spectrum. The functional hydroxyl, carboxyl, and amino groups that are involved in biosorption were revealed by the Fourier Transform Infrared spectroscopy (FTIR). The amorphous nature of the biosorbent for biosorption was indicated by the X-ray Diffraction (XRD) analysis. The biomass of B. subtilis exhibited a point zero charge (pHpzc) at 2.0.

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supporting

confidence: 81%

Structural Changes of Bacillus subtilis Biomass on Biosorption of Iron (II) from Aqueous Solutions: Isotherm and Kinetic Studies

Kanamarlapudi

Muddada

2019

Polish Journal of Microbiology

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“…The randomness of the adsorption process was confirmed by the positive values of ∆S • . This finding agrees with Zaib et al [114], who used the red algal biomass of Porphyridium cruentum. The equilibrium biosorption data was analyzed using biosorption isothermal models, which revealed a correlation between the mass of the solute adsorbed per unit mass of the equilibrium sorbent.…”

Section: Discussionsupporting

confidence: 92%

Factors Affecting Efficiency of Biosorption of Fe (III) and Zn (II) by Ulva lactuca and Corallina officinalis and Their Activated Carbons

Ameen

Moustafa

Mofeed

et al. 2021

Water

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The removal of heavy metals from industrial waste has become crucial in order to maintain water quality levels that are suitable for environmental and species reproductive health. The biosorption of Zn+2 and Fe+3 ions from aqueous solution was investigated using Ulva lactuca green algal biomass and Corallina officinalis red algal biomass, as well as their activated carbons. The effects of biosorbent dosage, pH, contact time, initial metal concentration, and temperature on biosorption were evaluated. The maximum monolayer capacity of Ulva lactuca and Corallina officinalis dry algal powder and algal activated carbon was reached at pH 5 and 3 for Zn+2 and Fe+3, respectively, while the other factors were similar for both algae, which were: contact time 120 min, adsorbent dose 1 g, temperature 40 °C and initial concentrations of metal ion 50 mg·L−1. The batch experimental data can be modelled using the Langmuir and Freundlich isotherm models. Thermodynamic characteristics revealed that the adsorption process occurs naturally and is endothermic and spontaneous. For the adsorption of Zn+2 and Fe+3 ions, the value of G° was found to be negative, confirming the practicality of the spontaneous adsorption process, which could be helpful for remediation in the era of temperature increases.

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“…Huang and Lin [8] studied Hg adsorption by Sargassum in an aqueous solution which found pH 8-10 was the optimum adsorption capability with 70% removal of heavy metals. Another study was reported for red algae which could adsorb 99% Hg at pH 7-10 [34]. Similar to this study, the adsorption efficiency of Hg by S. crassifolium had almost reached 98% removal from industrial wastewater at pH 9.…”

Section: Resultssupporting

confidence: 87%

The Adsorption of Heavy Metals From Industrial Wastewater Using Sargassum Crassifolium

Putri¹

2019

GEOMATE

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Sargassum crassifolium is the origin strains of macroalgae from Indonesia which was the most effectively adsorb heavy metals from liquid solution and it was investigated the adsorptive capability of heavy metals in industrial wastewater. The macroalgae were collected at Kotok Besar Island, Seribu Island, North Jakarta, Indonesia and were treated with the variety of pH 2, 3, 4, 5 and 9 for 60 minutes oscillation, in duplicate assessment. The macroalgae were selectively effective for removal of Cd, Hg, and Pb compared with other heavy metals, achieving 75-99.05% adsorption efficiency, mostly in acidic condition for 60 minutes oscillation, except Hg. The selectivity order for other metal ion uptake by S. crassifolium was Cu>Fe>Co>Ni>Cr with percentage removal below 56%. Due to the low cost, availability and significantly high adsorption capability, the brown macroalgae S. crassifolium is able to be used for selective removal of heavy metals from industrial wastewater effectively in acidic pH range.

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Equilibrium, kinetic and thermodynamic biosorption studies of Hg(II) on red algal biomass ofPorphyridium cruentum

Cited by 22 publications

References 43 publications

Structural Changes of Bacillus subtilis Biomass on Biosorption of Iron (II) from Aqueous Solutions: Isotherm and Kinetic Studies

Structural Changes of Bacillus subtilis Biomass on Biosorption of Iron (II) from Aqueous Solutions: Isotherm and Kinetic Studies

Factors Affecting Efficiency of Biosorption of Fe (III) and Zn (II) by Ulva lactuca and Corallina officinalis and Their Activated Carbons

The Adsorption of Heavy Metals From Industrial Wastewater Using Sargassum Crassifolium

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