Modification of Sodium Alginate for the Removal of Cd(II) from Aqueous Solutions

Hashem, A.; Elhmmali, Mohamed M.

doi:10.1080/03602550600609648

Cited by 11 publications

(7 citation statements)

References 22 publications

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“…Lagoa et al [ 22 ] discovered in their work that dried alginate beads are more adsorbent due to the higher surface area. Alginate functionalized with other materials, such as activated carbon [ 23 ], biochar from biomass [ 24 , 25 ], carbon nanotubes [ 26 ], graphene [ 15 ], and other biopolymers [ 27 , 28 ] have also proved to be efficient in the removal of metals such as Cd 2+ [ 29 , 30 ], Cu 2+ [ 23 , 31 ], Mg 2+ , Fe 2+ [ 32 ], Pb 2+ [ 23 , 31 ], and Zn 2+ [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

Novel Adsorbent Based on Banana Peel Waste for Removal of Heavy Metal Ions from Synthetic Solutions

et al. 2021

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Due to its valuable compounds, food waste has been gaining attention in different applications, such as life quality and environment. Combined with circular economy requirements, a valorization method for waste, especially banana waste, was to convert them into adsorbents with advanced properties. The banana waste, after thermal treatment, was used with high removal performances (100%) for the removal of heavy metals, such as Cr, Cu, Pb, and Zn, but their small particle size makes them very hard to recover and reuse. For this reason, a biopolymeric matrix was used to incorporate the banana waste. The matrix was chosen for its remarkable properties, such as low cost, biodegradability, low carbon footprint, and reduced environmental impact. In this research, different types of materials (simple banana peel ash BPA and combined with biopolymeric matrix, ALG–BPA, CS–BPA) were prepared, characterized, and tested. The materials were characterized by means of attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), optical microscopy (OM), scanning electron microscopy (SEM), and tested for the removal of metal ions from synthetic solutions using atomic absorption spectroscopy (AAS). The ALG–BPA material proved to be the most efficient in the removal of heavy metal ions from synthetic solution, reaching even 100% metal removal for Cr, Fe, Pb, and Zn, while the CS-based materials were the least efficient, presenting the best values for Cr and Fe ions with a removal efficiency of 34.14% and 28.38%, respectively. By adding BPA to CS, the adsorption properties of the material were slightly improved, but also only for Cr and Fe ions, to 37.09% and 57.78%.

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Section: Introductionmentioning

confidence: 99%

Novel Adsorbent Based on Banana Peel Waste for Removal of Heavy Metal Ions from Synthetic Solutions

et al. 2021

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“…Accurately, 10 ml of metal ions solution was introduced in 100 ml flask containing 10 ml of distilled water, 0.25 g of HMTA (as buffer), and five drops of xylenol orange. 46 The end point was obtained when the color changed from violet to yellow. The amount of adsorbed Cd (II) and Co(II) ions on modified cotton fabric at equilibrium, q e , (mg/g) was obtained according to the following equation 1,39,47 :…”

Section: Heavy Metal Ions Removalmentioning

confidence: 99%

Performance evaluation of modified fabricated cotton membrane for oil/water separation and heavy metal ions removal

Abdel‐Hakim

Abdella

Sabaa

et al. 2021

Vinyl Additive Technology

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Preparation of effective membrane with special surface treatment for oil/water separation having promising future and low manufacturing cost. The suggested membrane was fabricated by a simple treatment via increasing the hydrophilicity of the cotton fabric surface. The cotton fabric was impregnated in poly(acrylic acid-co-N-methylol acrylamide), poly(AA-co-NMA), where NMA acts as bonding agent. Sodium hypophosphite (SHP) was added to the modification solution to enhance the bonding between the cotton fabric and the PAA.The modified fabric was thermally dried and cured at different temperatures. It was found that, the presence of 3.5% NMA and addition of 5% SHP to the modification solution then curing at 190 C gave the highest amount of bonded PAA to the cotton fabric. The success of the modification process was confirmed by scanning electron microscope, Fourier transformer infrared and the increase in the contact angle of the cotton fabric after modification. Furthermore, the prepared membrane was evaluated for oil (n-hexane, toluene, and petroleum ether)/water separation and also for heavy metal ions removal (Cd 2+ and Co 2+ ).Neutralization of the produced membrane with ammonium hydroxide resulting in a higher contact angle and consequently higher separation efficiency for oil/water mixtures and higher performance for heavy metal ions removal compared to the unneutralized one.

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“…The specific surface area (S MB ) of the prepared biosorbent (BABP) was estimated using methylene blue method, as described by Lim et al (2017). The solubility of BABP was also determined, as described elsewhere (Hashem and Elhmmali, 2006). The bulk density of BABP was estimated using the following equation:…”

Section: Biosorbent Characterizationmentioning

confidence: 99%

Removal of methylene blue using balanites aegyptiaca bark powder as low-cost and eco-friendly biosorbent

Amar

Hassan

Aqeela

et al. 2021

RJTA

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Purpose This paper aims to investigate the potential application of Balanites aegyptiaca bark powder (BABP) for removing a basic textile dye, methylene blue (MB), from aqueous solutions. Design/methodology/approach The biosorbent (BABP) was characterized using Fourier transform infrared spectroscopy (FTIR) and point of zero charge (pHPZC). Batch mode was selected to study the biosorption of MB onto BABP surface at different experimental conditions (shaking speed, contact time, initial solution pH, ionic strength, solution temperature, biosorbent dosage and initial dye concentration). Besides, the reusability of BABP for MB biosorption was also examined. Findings The biosorption results revealed that approximately 96% of MB was removed successfully at the optimized operational conditions. Pseudo-second-order and Langmuir models, respectively, better described the adsorption kinetics and isotherms. The monolayer biosorption capacity (qmax) for MB was about 97.09 mg/g. According to thermodynamics findings, the MB biosorption onto BABP is an exothermic and spontaneous process. The results demonstrate that BABP can be considered as potential eco-friendly, readily available and low-cost biosorbent for hazardous textile dyes removal from water bodies and also provides a promising method for minimization of agricultural solid wastes (e.g. plant barks). Originality/value The utilization of Balanites aegyptiaca bark powder (BABP), solid waste material, as low-cost and eco-friendly biosorbent for the removal of hazardous basic textile dye (methylene blue) from the aquatic environment.

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Modification of Sodium Alginate for the Removal of Cd(II) from Aqueous Solutions

Cited by 11 publications

References 22 publications

Novel Adsorbent Based on Banana Peel Waste for Removal of Heavy Metal Ions from Synthetic Solutions

Novel Adsorbent Based on Banana Peel Waste for Removal of Heavy Metal Ions from Synthetic Solutions

Performance evaluation of modified fabricated cotton membrane for oil/water separation and heavy metal ions removal

Removal of methylene blue using balanites aegyptiaca bark powder as low-cost and eco-friendly biosorbent

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