Synthesis of Poly(hydroxamic Acid)‐Poly(amidoxime) Chelating Ligands for Removal of Metals from Industrial Wastewater

Lutfor, M. R.; Mashitah, M. Y.

doi:10.1155/2011/645628

Cited by 18 publications

(13 citation statements)

References 5 publications

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“…The residual metal concentration was determined with replicated experiment and the sorption amount was calculated according to equation II [4].…”

Section: Kinetics Of Adsorption By Batch-modementioning

confidence: 99%

“…These polymeric ligands were treated with buffer pH 4 before prepared for the column bed [4]. Then single wastewater was decanted into the column at pH 4.…”

Section: Removal Of Metal Ions By Column-modementioning

confidence: 99%

“…The metal ions concentrations were measured in waste- water from a chromium plating process [4]. Several metal ions such as Cr, Ni, Fe, Zn and Pb exhibit higher concentrations than permissible discharge levels as shown in Table 1.…”

Section: Chromium Wastewatermentioning

confidence: 99%

“…Indeed, the common ligand CN -has been widely used in the electroplating and mining industries, however, a vast amount of CN -containing heavy-metal wastewaters, which is hazardous for both environment and human health. Juang et al [23] have demonstrated the Na-form of strong-acid Purolite NRW-100 resin to recover Ni from a simulated electroplating waste solution containing NiSO 4 , NH 4 Cl, NaH 2 PO 4 and citrate. A set of mass balance equations that take into account possible aqueous complexation reactions was used to establish the pH diagram of Ni(II) species in the presence of anionic ligand citrate or phosphate for the recovery and removal of metals from process and waste streams in chemical process industries.…”

Section: Acid/alkali Wastewatermentioning

confidence: 99%

“…Toxic metal ions do not involve decay process into nontoxic form so it is necessary to remove from industrial wastewaters before release into the environment [4]. A large environmental, public health and economic impact are evident due to the toxic metal ions entering into the environment.…”

Section: Introductionmentioning

confidence: 99%

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Efficient removal of heavy metals from electroplating wastewater using polymer ligands

Rahman

Sarkar

Yusoff

2015

Front. Environ. Sci. Eng.

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Poly(hydroxamic acid)-poly(amidoxime) chelating ligands were synthesized from poly(methyl acrylate-co-acrylonitrile) grafted acacia cellulose for removing toxic metal ions from industrial wastewaters. These ligands showed higher adsorption capacity to copper (2.80 mmol•g -1 ) at pH 6. In addition, sorption capacities to other metal ions such as iron, zinc, chromium, and nickel were also found high at pH 6. The metal ions sorption rate (t 1/2 ) was very fast. The rate of adsorption of copper, iron, zinc, chromium, nickel, cobalt, cadmium and lead were 4, 5, 7, 5, 5, 8, 9 and 11 min, respectively. Therefore, these ligands have an advantage to the metal ions removal using the column technique. We have successfully investigated the known concentration of metal ions using various parameters, which is essential for designing a fixed bed column with ligands. The wastewater from electroplating plants used in this study, having chromium, zinc, nickel, copper and iron, etc. For chromium wastewater, ICP analysis showed that the Cr removal was 99.8% and other metal ions such as Cu, Ni, Fe, Zn, Cd, Pb, Co and Mn removal were 94.7%, 99.2%, 99.9%, 99.9%, 99.5%, 99.9%, 95.6% and 97.6%, respectively. In case of cyanide wastewater, the metal removal, especially Ni and Zn removal were 96.5 and 95.2% at higher initial concentration. For acid/alkali wastewater, metal ions removing for Cd, Cr and Fe were 99.2%, 99.5% and 99.9%, respectively. Overall, these ligands are useful for metal removal by column method from industrial wastewater especially plating wastewater.

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“…The residual metal concentration was determined with replicated experiment and the sorption amount was calculated according to equation II [4].…”

Section: Kinetics Of Adsorption By Batch-modementioning

confidence: 99%

“…These polymeric ligands were treated with buffer pH 4 before prepared for the column bed [4]. Then single wastewater was decanted into the column at pH 4.…”

Section: Removal Of Metal Ions By Column-modementioning

confidence: 99%

Section: Chromium Wastewatermentioning

confidence: 99%

Section: Acid/alkali Wastewatermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Efficient removal of heavy metals from electroplating wastewater using polymer ligands

Rahman

Sarkar

Yusoff

2015

Front. Environ. Sci. Eng.

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Synthesis of amidoximated polyacrylonitrile fibers and its use as adsorbent for Cr (VI) ions removal from aqueous solutions

Bouchoum

Benmoussa

Jada

et al. 2019

Env Prog and Sustain Energy

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Functionalized fibers, especially polyacrylonitrile fibers (PANF), have attracted wide interest as an effective and economical material for environment and water protection. In this study, polyacrylonitrile fibers modified with hydroxylamine hydrochloride were used as an adsorbent to remove hexavalent chromium ions from aqueous solutions. The novelty of the present study compared to the literature is the functionalization of polyacrylonitrile fibers surface by optimizing cost and energy while achieving a yield fast removal rate and high adsorption capacity of hexavalent chromium from aqueous solutions. The amidoximated polyacrylonitrile fibers were characterized using Fourier Transform InfraRed spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). The results confirmed the success of polyacrylonitrile fibers modification. The adsorption capacity was evaluated by investigating the effect of initial pH solution ranging from 2.0 to 7.0, the adsorbent dose varied from 0.05 to 0.25 g, the initial Cr (VI) concentration range was (5–70 mg g−1), the temperature varied from 5 to 60°C, and the contact time ranged from 0 to 180 min. We have used the Langmuir and Freundlich adsorption models to describe the equilibrium sorption data. The maximum adsorption capacity estimated using the Langmuir model reached 32. 57 mg g−1 under optimal conditions. The thermodynamic parameters (ΔG, ΔH, and ΔS) were also determined. In addition, the adsorbent showed a desorption rate of Cr (VI) up to 92% with 0.5 mol of NaOH, which can be reused for three adsorption–desorption cycles. The overall data showed the efficiency of amidoximated polyacrylonitrile fibers in removing Cr (VI) from aqueous solutions. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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Copper Removal from Aqueous Solutions Using Functionalized Polyacrylonitrile Fibers and Antibacterial Activity

Saadouni,

Nadi,

Moukhfi

et al. 2024

Proceedings of the 10th International Conference of Applied Research on Textile and Materials

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Synthesis of Poly(hydroxamic Acid)‐Poly(amidoxime) Chelating Ligands for Removal of Metals from Industrial Wastewater

Cited by 18 publications

References 5 publications

Efficient removal of heavy metals from electroplating wastewater using polymer ligands

Efficient removal of heavy metals from electroplating wastewater using polymer ligands

Synthesis of amidoximated polyacrylonitrile fibers and its use as adsorbent for Cr (VI) ions removal from aqueous solutions

Copper Removal from Aqueous Solutions Using Functionalized Polyacrylonitrile Fibers and Antibacterial Activity

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