Removal of lead ions from aqueous solutions using sodium alginate-graft-poly(methyl methacrylate) beads

Salisu, Ahmed; Sanagi, Mohd Marsin; Naim, Ahmedy Abu; Ibrahim, Wan Aini Wan; Karim, Khairil Juhanni Abd

doi:10.1080/19443994.2015.1071685

Cited by 31 publications

(16 citation statements)

References 29 publications

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“…More than 98% of Pb was removed by calcium alginate at an initial concentration of 0.1 mM. Salisu et al (2015) applied sodium alginate-graft-poly (methyl methacrylate) in the form of calcium cross-linked beads to remove Pb from aqueous solutions. The maximum adsorption capacity was found to be 526 mg/g for concentrations ranging from 200 to 1000 mg/L.…”

Section: Removal Of Heavy Metals From Drinking Watermentioning

confidence: 99%

Heavy metals in drinking water: Occurrences, implications, and future needs in developing countries

Chowdhury

Mazumder

Al-Attas

et al. 2016

Science of The Total Environment

758

296

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Heavy metals in drinking water pose a threat to human health. Populations are exposed to heavy metals primarily through water consumption, but few heavy metals can bioaccumulate in the human body (e.g., in lipids and the gastrointestinal system) and may induce cancer and other risks. To date, few thousand publications have reported various aspects of heavy metals in drinking water, including the types and quantities of metals in drinking water, their sources, factors affecting their concentrations at exposure points, human exposure, potential risks, and their removal from drinking water. Many developing countries are faced with the challenge of reducing human exposure to heavy metals, mainly due to their limited economic capacities to use advanced technologies for heavy metal removal. This paper aims to review the state of research on heavy metals in drinking water in developing countries; understand their types and variability, sources, exposure, possible health effects, and removal; and analyze the factors contributing to heavy metals in drinking water. This study identifies the current challenges in developing countries, and future research needs to reduce the levels of heavy metals in drinking water.

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Section: Removal Of Heavy Metals From Drinking Watermentioning

confidence: 99%

Heavy metals in drinking water: Occurrences, implications, and future needs in developing countries

Chowdhury

Mazumder

Al-Attas

et al. 2016

Science of The Total Environment

758

296

View full text Add to dashboard Cite

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“…The percentage grafting, G(%) decreased when the initiator amount was increased above 0.2g. This could be attributed to more free-radical generation that eventually may lead to premature termination (by coupling) of the growing radicals at higher concentration (16). It was observed that the highest percentage grafting was acheived at acrylic acid concentration of 5 g and KPS concentration of 0.2 g. It was also observed that the reaction reached to the optimum at a very short reaction time of 2 minutes.…”

Section: Resultsmentioning

confidence: 96%

“…Contamination of surface waters by toxic heavy metals such as Pb, Cd, As, Ni, Cr, Zn, Cu, etc. endangered humans and aquatic organisms (16). For example, lead can cause several disorders that include; renal damage, hepatic damage, central nervous system damage, and damage to the reproductive system (17).…”

Section: Introductionmentioning

confidence: 99%

Green Preparation of Hyphaene thebaica Fiber Grafted Acrylic Acid for Adsorption of Pb (II) ions from Aqueous Solution

Salisu¹,

Sale²

2019

Journal of the Turkish Chemical Society Section A: Chemistry

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In this study, a green chemistry approach was employed in the preparation of Hyphaene thebaica fiber grafted polyacrylic acid via microwave assisted method using potassium persulfate as the chemical initiator. The optimum percentage grafting of 92% was achieved under 5 g concentration of acrylic acid, 0.2 g concentration of potassium persulfate (KPS) and 2 minutes of reaction time. The grafted sample was characterized using the following techniques, FTIR, SEM and XRD. The prepared graft copolymer was examined for adsorption of Pb(II) ions from aqueous solution in batch mode systems. The adsorption parameters such as pH, initial metal ion concentration and contact time were also studied. The Langmuir and Freundlich isotherm models were applied to simulate the equilibrium adsorption experimental data. The Langmuir model fitted well with experimental data with maximum adsorption capacity (qmax) of 20.37 mg/g at 45 minutes. Higher regression coefficient obtained confirmed the suitability of the Langmuir isotherm model which assumed monolayer coverage on the adsorbent surface. The adsorption studies revealed the efficacy of the grafted fiber for removal of Pb(II) ions from dilute aqueous solutions.

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“…Salisu et al [83] have documented studies on chemically induced graft copolymerization of vinyl monomers onto sodium alginate and their potential application in diverse areas. Recently, Salisu et al [84] prepared PMMA graft sodium alginate by radical polymerization using benzoyl peroxide as initiator. The product was further cross-linked to form beads.…”

Section: Sodium Alginate-grafted Pmmamentioning

confidence: 99%

Agarose‐ and alginate‐based biopolymers for sample preparation: Excellent green extraction tools for this century

Sanagi

Loh

Ibrahim

et al. 2016

J of Separation Science

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Recently, there has been considerable interest in the use of miniaturized sample preparation techniques before the chromatographic monitoring of the analytes in unknown complex compositions. The use of biopolymer-based sorbents in solid-phase microextraction techniques has achieved a good reputation. A great variety of polysaccharides can be extracted from marine plants or microorganisms. Seaweeds are the major sources of polysaccharides such as alginate, agar, agarose, as well as carrageenans. Agarose and alginate (green biopolymers) have been manipulated for different microextraction approaches. The present review is focused on the classification of biopolymer and their applications in multidisciplinary research. Besides, efforts have been made to discuss the state-of-the-art of the new microextraction techniques that utilize commercial biopolymer interfaces such as agarose in liquid-phase microextraction and solid-phase microextraction.

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Removal of lead ions from aqueous solutions using sodium alginate-graft-poly(methyl methacrylate) beads

Cited by 31 publications

References 29 publications

Heavy metals in drinking water: Occurrences, implications, and future needs in developing countries

Heavy metals in drinking water: Occurrences, implications, and future needs in developing countries

Green Preparation of Hyphaene thebaica Fiber Grafted Acrylic Acid for Adsorption of Pb (II) ions from Aqueous Solution

Agarose‐ and alginate‐based biopolymers for sample preparation: Excellent green extraction tools for this century

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