Simultaneous removal of cationic, anionic and organic pollutants in highly acidic water using magnetic nanocomposite alginate beads

Phiri, Isheunesu; Ko, Jang Myoun; Mushonga, Paul; Kugara, Jameson; Onani, Martin O.; Msamadya, Spancer; Bon, Chris Yeajoon; Mugobera, Sharon; Siyaduba-Choto, Ketiwe; Madzvamuse, Alfred

doi:10.1016/j.jwpe.2019.100884

Cited by 36 publications

(6 citation statements)

References 72 publications

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“…The BKT zeolite matrix comprises an assemblage of SiO 4 and AlO 4 tetrahedra joined by shared oxygen atoms to form a porous crystal lattice. 49 Because of the alternating SiO 4 and AlO 4 tetrahedra, a negative charge is created, which is balanced by the exchangeable Li + ions (Figure 1a). 32 The presence of charge-balanced Li + ions in the zeolitic structure enables it to be a fast ion conductor.…”

Section: Resultsmentioning

confidence: 99%

Dendrite Suppression by Lithium-Ion Redistribution and Lithium Wetting of Lithium Zeolite Li₂(Al₂Si₄O₁₂) in Liquid Electrolytes

Phiri

Kim

Afrifah

et al. 2022

ACS Appl. Mater. Interfaces

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Lithium metal is considered a next-generation anode material for high-voltage, high-energy-density batteries; however, its commercialization is limited because of dendrite formation during charging, which leads to short-circuiting and fire. Li metal is coated with a lithium zeolite Li2(Al2Si4O12) (bikitaite - BKT) for dendrite suppression. The BKT-coated Li metal anode exhibits enhanced cycle performance for both Li/LMO (over 982 cycles) and Li/Li cells (over 2000 h at 0.52.0 mAh cm–2 and 693 h at 2.0 mAh cm–2). Moreover, the voltage profile of the Li/Li cells deviates from the conventional Li plating behavior. We hypothesize that this is due to the Li wetting of the BKT particles during plating, which leads to the formation of an interconnected three-dimensional (3D) Li network. Furthermore, BKT, a Li conductor, promotes even Li+-ion distribution during plating, resulting in the uniform deposition of Li and, consequently, suppressed dendrite formation. This work provides evidence that BKT can be potentially used in Li metal batteries.

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Section: Resultsmentioning

confidence: 99%

Dendrite Suppression by Lithium-Ion Redistribution and Lithium Wetting of Lithium Zeolite Li₂(Al₂Si₄O₁₂) in Liquid Electrolytes

Phiri

Kim

Afrifah

et al. 2022

ACS Appl. Mater. Interfaces

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“…A complete oil removal was obtained for 10 mg/L of oil concentration, pH: 8.0, 30 g/L of bead loading, 180 rpm of stirring speed, and 4 h of adsorption time (Bilici et al, 2021). However, the alginates still suffer from the lack of pores on their surface and the low diffusion coefficient (Phiri et al, 2019). In this context, many researchers have facilitated alginate's uses by modification of their surface modification (You et al, 2019; Yu et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Remazol Brilliant Blue R (RBBR) dye and phosphate adsorption by calcium alginate beads modified with polyethyleneimine

Işık

Saleh

Bilici

et al. 2021

Water Environment Research

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This study concerns the preparation of novel adsorbent prepared from calcium alginate bead modified with polyethyleneimine (PEI‐CaAlg). The adsorption capacity of the PEI‐CaAlg was examined by Remazol Brilliant Blue R (RBBR) and phosphate adsorption. PEI‐CaAlg showed high removal efficiencies for RBBR (90.48%) and phosphate (88.10%). The removal of both RBBR and phosphate onto the PEI‐CaAlg followed the Freundlich isotherm and the second‐order model. The adsorption was studied in terms of thermodynamic and found to be feasible and spontaneous in nature. The reusability of the modified alginate beads was also examined up to five cycles. The removal efficiency was 90.48% at the first cycle and decreased to 75.15% at the end of the fourth cycle. The adsorption of color and phosphate from real textile wastewater was also instigated. The removal efficiencies for color and phosphate ions reached 80.24% and 90.00%, respectively. Therefore, the prepared PEI‐CaAlg can be considered as a novel, eco‐friendly, and cost‐effective adsorbent for simultaneous dye and phosphate adsorption. Practitioner Points This study aims to modify the surface of calcium alginate beads with polyethyleneimine (PEI). The adsorption of RBBR and phosphate by the modified alginate beads (PEI‐CaAlg) was investigated. PEI is an organic polymer with a linear/branch shape, which can increase the active sites on the adsorbent surface. PEI has one nitrogen atom in every three atoms provides a positive charge that can complex with the negatively charged molecules. The adsorption of RBBR and phosphate were carried out onto PEI‐CaAlg.

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“…Anthropogenic pollutants in nature have been a huge problem for a long time. There were numerous attempts in the last several years to remove these chemicals owning various properties (Shawabkeh 2006;Ayar et al 2008;Zhao et al 2014;Acar et al 2015;Hassani et al 2015;İnal and Erduran 2015;Belhouchat et al 2017;Chen et al 2017;Dinu et al 2017;Phiri et al 2019;Duman et al 2020). One of the most widely used technics is sorption, wherewith these contaminants can be removed.…”

Section: Introductionmentioning

confidence: 99%

“…The diverse properties can be attributed to the fact that the residues of guluronic acid have higher affinity to the divalent cations than the residues of mannuronic acid; moreover, the different divalent cations have different affinities to the monomers of alginate (de Vos et al 2014;Hecht and Srebnik 2016;Wang et al 2019). Utilization of alginate is multivarious, for example, it has been already used for removing pollutants, such as 4-nitrophenol (Peretz and Cinteza 2008), toluene (Phiri et al 2019) or dyes (Hassani et al 2015;İnal and Erduran 2015;Belhouchat et al 2017;Dinu et al 2017). Furthermore, numerous studies can be found in the literature, in which alginate was used as an encapsulation, immobilizing media, where such as Vitamin B 12 and polyethylene glycol (Puguan et al 2015), β-glucuronidase enzyme (Li et al 2009), enzyme yeast alcohol dehydrogenase (Xu et al 2007), glucose oxidase enzyme (Blandino et al 2001), ovalbumin protein (Yu et al 2019) or thyme extract (Stojanovic et al 2012) were immobilized.…”

Section: Introductionmentioning

confidence: 99%

Sorption of potential ionic pollutants on oil shale and its non-series composite sorbents

Molnár

Földényi

Horváth

2020

Int. J. Environ. Sci. Technol.

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Huge amounts of anthropogenic environmental pollutants appearing in nature mean an emerging problem. Oil shale is a convenient candidate, wherewith these contaminations can be removed from our natural environment, taking into account its sorption ability and low price. However, oil shale has a crumbling nature, which restricts its facile usage. Hence, oil shale was transformed into more handleable forms, using binding materials. Two oil shale composite forms were prepared by applying sodium alginate and agar. A cationic and an anionic chemicals, benzyltriethylammonium chloride and sodium 2,3-diisopropylnaphthalene-1-sulfonate, respectively, were used as model pollutants, and their sorptions on these newly prepared composites were studied. Sorption properties of oil shale powder and oil shale composites were compared. In the composite materials, oil shale properly sorbed the model pollutants (the binding material did not cover the sorption sites); furthermore, oil shale composites had significantly higher removal efficiency compared to that of the oil shale powder: 208 ± 15.6 (oil shale–agar) and 171 ± 22.8 (oil shale–alginate) vs 140 ± 11.1 µmol/g for the cationic compound; 151 ± 1.6 (oil shale–agar) and 165 ± 7.6 (oil shale–alginate) vs 81.5 ± 2.6 µmol/g for the anionic compound. Results of diffusion models for the two composites show that the opposite charges of the solutes largely influence the rate of their diffusion, owing to the interaction between the solute and the composite material. These results indicate that oil shale and its composites are applicable candidates as sorbents, from which the most effective one can be chosen by considering the chemical properties of the actual pollutant to be removed.

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Simultaneous removal of cationic, anionic and organic pollutants in highly acidic water using magnetic nanocomposite alginate beads

Cited by 36 publications

References 72 publications

Dendrite Suppression by Lithium-Ion Redistribution and Lithium Wetting of Lithium Zeolite Li₂(Al₂Si₄O₁₂) in Liquid Electrolytes

Dendrite Suppression by Lithium-Ion Redistribution and Lithium Wetting of Lithium Zeolite Li₂(Al₂Si₄O₁₂) in Liquid Electrolytes

Remazol Brilliant Blue R (RBBR) dye and phosphate adsorption by calcium alginate beads modified with polyethyleneimine

Sorption of potential ionic pollutants on oil shale and its non-series composite sorbents

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Simultaneous removal of cationic, anionic and organic pollutants in highly acidic water using magnetic nanocomposite alginate beads

Cited by 36 publications

References 72 publications

Dendrite Suppression by Lithium-Ion Redistribution and Lithium Wetting of Lithium Zeolite Li2(Al2Si4O12) in Liquid Electrolytes

Dendrite Suppression by Lithium-Ion Redistribution and Lithium Wetting of Lithium Zeolite Li2(Al2Si4O12) in Liquid Electrolytes

Remazol Brilliant Blue R (RBBR) dye and phosphate adsorption by calcium alginate beads modified with polyethyleneimine

Sorption of potential ionic pollutants on oil shale and its non-series composite sorbents

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Product

Resources

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Dendrite Suppression by Lithium-Ion Redistribution and Lithium Wetting of Lithium Zeolite Li₂(Al₂Si₄O₁₂) in Liquid Electrolytes

Dendrite Suppression by Lithium-Ion Redistribution and Lithium Wetting of Lithium Zeolite Li₂(Al₂Si₄O₁₂) in Liquid Electrolytes