Use of the microalga Scenedesmus obliquus (Turpin) Kutzing to remove some heavy metals from the industrial wastewaters

Mosleh, Yahia Y.

doi:10.21608/ejabf.2021.199738

Cited by 1 publication

(1 citation statement)

References 37 publications

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“…Generally, any natural material has its adsorptive properties and can be used for heavy-metal removal, such as the microbial cultures of fungi, algae and plants [45]. The performance of different natural biosorbents, on the other hand, is dependent on the characteristics of the biomass as well as the affinity of the target heavy metal.…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%