Solid phase sensitive palladium(II) ions detection and recovery using ligand based efficient conjugate nanomaterials

Awual, Md. Rabiul

doi:10.1016/j.cej.2016.04.071

Cited by 335 publications

(57 citation statements)

References 86 publications

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“…Some ligand-based nanocomposite adsorbents are recently utilized for the removal of specific ions like Cerium (III) [9], Pb 2+ [10], Selenium (IV) [11], Pd 2+ [12] [13], Cu 2+ ions [14,15], phosphate [16] and nitrite ion [17]. The preparation and regeneration of the core material in these composites for the adsorption of specific metal ions consume more time and economically not viable.…”

Section: Introductionmentioning

confidence: 99%

MnFe2O4/ZrO2 nanocomposite as an efficient magnetically separable photocatalyst with good response to sunlight: preparation, characterization and catalytic mechanism

Meena¹,

Anantharaju

Vidya³

et al. 2020

SN Appl. Sci.

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Magnetically separable novel nano-MnFe 2 O 4 /ZrO 2 nanocomposite (NC) and MnFe 2 O 4 (MFO) samples were synthesized by an efficient solution combustion methodology. The structure, morphology and optical properties were characterized through powder X-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy and UV-Vis spectroscopy. The photocatalytic activity of MnFe 2 O 4 /ZrO 2 nanocomposite was analysed for decolourization efficiency of methylene blue (MB) and textile dye wastewater under natural sunlight irradiation. The results demonstrated that the decolourization response of the MnFe 2 O 4 /ZrO 2 nanocomposite was 95% for MB and 59% for textile dye wastewater in 90 min. The photocatalytic performance of MnFe 2 O 4 /ZrO 2 was almost 1.4 times as high as pure MnFe 2 O 4 was ascribed to the synergic effect and interfacial interaction across MnFe 2 O 4 nanoparticle (NP) and ZrO 2 that leads to separation of electron-hole pairs efficiently and broadened light absorption of the composite (2.42 eV) compared to MnFe 2 O 4 (2.15 eV). The effective optimized parameters such as solution pH of 7, nanocomposite dosage of 60 mg and initial dye concentration of 20 ppm were studied on photocatalytic performance for the removal of MB dye. The magnetically separable MnFe 2 O 4 / ZrO 2 nanocomposite proved to be highly active and a stable catalyst in five successive photodecolourization cycles for an aqueous solution of MB dye under sunlight irradiation. Furthermore, the possible sunlight photocatalytic mechanism of the MnFe 2 O 4 /ZrO 2 nanocomposite was proposed. Due to its enhancement in photocatalytic activity, this NC has great potential towards the environmental remediation for practical photocatalytic application towards wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

MnFe2O4/ZrO2 nanocomposite as an efficient magnetically separable photocatalyst with good response to sunlight: preparation, characterization and catalytic mechanism

Meena¹,

Anantharaju

Vidya³

et al. 2020

SN Appl. Sci.

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“…Therefore, enhanced palladium removal from electroplating wastewater can bring great economic and environmental benefits. Many methods including precipitation methods by thiourea or ammonium chloride (Chen and Zhou, 2009;Park and Fray, 2009), reduction method by formic acid (Barakat et al, 2006), ion exchange (Wołowicz and Hubicki, 2011), electro-deposition (Fathirad et al, 2012), membrane separation (Nattaya and Paisan, 2014;Tahmasebi and Yamini, 2014), extraction (Chen et al, 2017;Wei et al, 2016) and adsorption (Awual, 2016;Awual et al, 2015;Lin et al, 2015;Monier and Abdel-Latif, 2016;Noah et al, 2016;Vojoudi et al, 2017) have been employed for treating palladium (II) solutions. Among them, precipitation method, reduction method and electro-deposition method are generally used for removing palladium from concentrated solutions.…”

Section: Introductionmentioning

confidence: 99%

Selective chelating precipitation of palladium metal from electroplating wastewater using chitosan and its derivative

Xie¹,

Liang

Lin

et al. 2020

Adsorption Science & Technology

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A study on selective chelating precipitation of palladium metal from real electroplating wastewater using chitosan and its water-soluble derivative was conducted. The pH parameter, the concentrations of chitosan and its water-soluble derivative and the chelating precipitation time were experimentally investigated, and the optimum conditions were determined. The results revealed that both chitosan and its water-soluble derivative acted as chelating precipitation agents. Rapid chelating precipitation occurred when chitosan was added to real electroplating wastewater containing the chitosan derivative, thereby improving removal efficiency of palladium in different forms up to 95% under the optimum condition of 0.2 g/L chitosan and 0.16 mg/L derivative at pH 2.5. Then, dissolution experiments showed that chelating precipitation products could be dissolved in aqua regia. Additionally, selective chelating precipitation of palladium by chitosan and its derivative was characterized using X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Thus, it can be concluded that the combined utilization of chitosan and its water-soluble derivative is a promising approach method for the removal of different forms of palladium from real electroplating wastewater.

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“…Several strategies are employed to remove pollutants from wastewater depending on their nature. Adsorption processes using porous materials with various functional groups for target ion separation have demonstrated high efficiency for toxic ion removal from water solutions [7][8][9][10][11][12][13][14][15][16][17][18][19], whereas degradation processes are mostly employed in remediation of a large number of organic and inorganic pollutants [20][21][22][23][24][25][26]. Thus, the use of new environmentally friendly technologies is necessary to mitigate the effects caused by hazardous tannery effluents.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic treatment of tannery wastewater using reduced graphene oxide and CdS/ZnO to produce hydrogen with simultaneous sulfide abatement

et al. 2019

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This paper addresses the photocatalytic treatment of sulfide-rich liming bath wastewater from tanneries in an oxygenfree atmosphere. The photoactivity assessment of composites obtained from cadmium sulfide (CdS) and zinc oxide (ZnO) hybridization as well the influence of reduced graphene oxide (RGO) on the photocatalytic activity to generate hydrogen and mitigate sulfide was performed under visible-light irradiation. The results of the X-ray diffraction analysis allowed us to identify the crystalline phases in each synthesized sample. The photocatalysts RGO/(CdS) 1.0 /(ZnO) 0.4 and RGO/(CdS) 1.0 / (ZnO) 0.73 /(ZnS) 0.57 showed the best performances for hydrogen production of 1.6 mmol g −1 cat h −1 and 1.4 mmol g −1 cat h −1 , respectively, with mitigation of 80-90% of the sulfide content in the tannery wastewater. Long-term reaction tests indicated that the photocatalysts are active for a period of 24 h, and they retain the photoactivity after three photocatalytic cycles. The materials have demonstrated great potential for application in energy recovery from tannery wastewater with simultaneous sulfide abatement, especially the photocatalyst RGO/(CdS) 1.0 /(ZnO) 0.73 /(ZnS) 0.57 , which is more eco-friendly because of its lower cadmium content and minimal leaching of this toxic metal ion during photocatalytic treatment.

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Solid phase sensitive palladium(II) ions detection and recovery using ligand based efficient conjugate nanomaterials

Cited by 335 publications

References 86 publications

MnFe2O4/ZrO2 nanocomposite as an efficient magnetically separable photocatalyst with good response to sunlight: preparation, characterization and catalytic mechanism

MnFe2O4/ZrO2 nanocomposite as an efficient magnetically separable photocatalyst with good response to sunlight: preparation, characterization and catalytic mechanism

Selective chelating precipitation of palladium metal from electroplating wastewater using chitosan and its derivative

Photocatalytic treatment of tannery wastewater using reduced graphene oxide and CdS/ZnO to produce hydrogen with simultaneous sulfide abatement

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