Removal of cadmium from aqueous solution using marine green algae, Ulva lactuca

Ghoneim, Mohammed M.; El‐Desoky, Hanaa S.; El-Moselhy, Khalid M.; Amer, Alia; El-Naga, Emad H. Abou; Mohamedein, Lamiaa I.; Alprol, Ahmed E.

doi:10.1016/j.ejar.2014.08.005

Cited by 129 publications

(80 citation statements)

References 35 publications

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“…Pure carbon is hydrophobic in nature, but the oxygen associated with the carbon surface increases the hydrophilic nature of the activated carbon. The nature of adsorption of various compounds from water by activated carbon reveals the fact that granular activated carbon has different functional groups which have the capacity to adsorb negative ions, positive ions and trace metals (Ghoneim et al 2014). The mechanism of adsorption of compounds present in the greywater is inferred to be removed by surface interactions between the compounds in water and activated carbon through van der Waal forces of attraction, among which induced dipole-dipole interactions is observed to be more effective (Nowicki and Nowicki 2016).…”

Section: Mechanism Of the Adsorption Process In The Sand Filtrationmentioning

confidence: 99%

Treatment and effective utilization of greywater

2019

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Sustainable management aims at the governance of natural resources to meet the needs of future generations. The limited resources of freshwater in arid regions have led to the development of alternative water management strategies. To meet the future challenges of water scarcity, an attempt has been made in this study to utilize treated greywater obtained by gravitygoverned filtration technique and disinfection for domestic usage. The study addresses the possibilities of groundwater recharge with the treated greywater. The method focuses on a gravity-governed flow through a column containing activated carbon, sand and gravel. The greywater used for the treatment contains a mixture of equal proportions of water collected from three different sources such as kitchen sink, shower and washing machine in Fahaheel, Salmiya and Farwaniya areas of Kuwait. The study concluded that for a volume of 1167 cm 3 filtration media used, the designed column was 34% effective for first 1100 mL of greywater. Later, the column was regenerated by washing with distilled water and the regenerated column still proved to be effective with a removal efficiency of 26% for next 600 mL of greywater. The quality of the treated greywater was assessed in terms of physical, chemical and microbiological parameters as per the standard methods to check the suitability for domestic purposes. The results obtained were also compared with the groundwater quality of Kuwait group and Dammam aquifers, and it was inferred to be at par with their quality. The TDS of treated greywater has been reduced from 4910 to 1508 mg/L, which is also lower than the TDS in groundwater of both the aquifers, and pH was reduced from 10.29 to 7.94. The present study proved its efficiency equally to other existing methods, and the efficiency of removal for some of the analyzed parameters was measured as 23%, 95%, 52%, 88%, 100% and 100% for pH, color, TDS, turbidity, total coliform and E. coli, respectively. Hence, the study is simple and cost-effective approach that can be adopted for the treatment and reused greywater for domestic and agriculture and also for recharging the aquifers to prevent saltwater intrusion along the coastal aquifers.

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Section: Mechanism Of the Adsorption Process In The Sand Filtrationmentioning

confidence: 99%

Treatment and effective utilization of greywater

2019

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“…The pseudo second order model given by the [37] is as below: occupying the free binding sites inside the cell wall indicates strong cross linking and ion exchange mechanisms [38]. Thus, the biosorption of metal by marine algae is found promising technique because of its availability and low cost, it absorbs toxic metals from the waste water.…”

Section: Resultsmentioning

confidence: 99%

Untitled

2018

RJLBPCS

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Environmental pollution is serious global problem; it leads research towards remediation technique by applying biological method. Marine algal treatment for the biosorption of metal is found promising technique because of its availability and low cost, it absorbs toxic metals from the waste water. The biosorption capacity of the seaweed is depend on chemical constitution of their cell wall and presence of molecules with various functional groups which interacts with metal ions. This research paper focuses on biosorption of nickel (II) by using marine algal biomass of Caulerpa racemosa and Ulva lactuca (Chlorophyceae) and study of Langmuir and Freundlich adsorption isotherms and kinetics. The study indicates both the isotherm models observed favorable; the Freundlich model indicates higher adsorption capacity of the biomass. This study shows Ulva lactuca gives higher biosorption yield as compare to Caulerpa racemosa. The kinetic study indicates the reaction follows pseudo second order model observed in both marine algal biomass. Thus, it can be used as an effective technique in heavy metal removal from the contaminated environment.

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“…When cadmium binds to cysteine-rich proteins such as metallothionein in the liver, the complex formed can cause hepatotoxicity and upon circulation and transport to the kidney it can accumulate in the renal tissue causing nephrotoxicity (Jaishankar et al, 2014). The polluting sources of cadmium are electroplating, smelting, paint pigments, batteries, fertilizers, mining and alloy industries (Ghoneim et al, 2014). Table 3 compares the biosorption capacity of different biosorbents studied for the removal of cadmium ions.…”

Section: Biosorption Of Cadmiummentioning

confidence: 99%

Removal of heavy metals from aqueous media by biosorption

Redha

2020

Arab Journal of Basic and Applied Sciences

151

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In this literature review, the removal of heavy metals from aqueous media by an environmentally friendly method, known as biosorption has been discussed. Biosorption can be referred to as an alternative to the common unsustainable industrial methods currently used. Removal of heavy metals from aqueous media by biosorption can take place by the aid of different types of biomass including algae, fungi, bacteria and plants. The mechanism(s) of biosorption can vary accordingly, mechanisms include physical adsorption, ion exchange, complexation, precipitation and transport across the cells. The efficiency of removal of heavy metals by a specific biosorbent at specified conditions can be compared by the calculated biosorption capacity of the respected biosorbent. Several factors can influence the biosorption capacity of different biosorbents, that mainly includes water pH, temperature, contact time, biomass dosage and initial heavy metal concentration. This literature review focuses on the types of biosorbents, mechanisms of biosorption and factors affecting biosorption capacity. In addition, biosorption, as a method which has the potential of competing with common industrial methods has been critically analysed.

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Removal of cadmium from aqueous solution using marine green algae, Ulva lactuca

Cited by 129 publications

References 35 publications

Treatment and effective utilization of greywater

Treatment and effective utilization of greywater

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Removal of heavy metals from aqueous media by biosorption

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