Recent advances in magnetic composites as adsorbents for wastewater remediation

Sharma, Atul; Mangla, Divyanshi; Shehnaz,; Chaudhry, Saif Ali

doi:10.1016/j.jenvman.2022.114483

Cited by 109 publications

(38 citation statements)

References 122 publications

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“…To study the adsorption kinetic and isotherm 0.05 g of adsorbent was immersed in DC aqueous solutions with initial concentrations (25-100 mg L −1 ). The pH effect on the removal of DC has been examined at an initial concentration of 50 mg L −1 at pH (3)(4)(5)(6)(7)(8)(9)(10)(11) and 25 °C. The pH of the system was adjusted by adding small volumes of HCl or NaOH solutions (Crison pH meter, pH meter, pH 25).…”

Section: Phytosynthesis Of Nzvimentioning

confidence: 99%

Synergetic effect of green synthesized reduced graphene oxide and nano-zero valent iron composite for the removal of doxycycline antibiotic from water

Abdelfatah

El-Maghrabi

Mahmoud

et al. 2022

Sci Rep

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In this work, the synthesis of an rGO/nZVI composite was achieved for the first time using a simple and green procedure via Atriplex halimus leaves extract as a reducing and stabilizing agent to uphold the green chemistry principles such as less hazardous chemical synthesis. Several tools have been used to confirm the successful synthesis of the composite such as SEM, EDX, XPS, XRD, FTIR, and zeta potential which indicated the successful fabrication of the composite. The novel composite was compared with pristine nZVI for the removal aptitude of a doxycycline antibiotic with different initial concentrations to study the synergistic effect between rGO and nZVI. The adsorptive removal of bare nZVI was 90% using the removal conditions of 25 mg L−1, 25 °C, and 0.05 g, whereas the adsorptive removal of doxycycline by the rGO/nZVI composite reached 94.6% confirming the synergistic effect between nZVI and rGO. The adsorption process followed the pseudo-second order and was well-fitted to Freundlich models with a maximum adsorption capacity of 31.61 mg g−1 at 25 °C and pH 7. A plausible mechanism for the removal of DC was suggested. Besides, the reusability of the rGO/nZVI composite was confirmed by having an efficacy of 60% after six successive cycles of regeneration.

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Section: Phytosynthesis Of Nzvimentioning

confidence: 99%

Synergetic effect of green synthesized reduced graphene oxide and nano-zero valent iron composite for the removal of doxycycline antibiotic from water

Abdelfatah

El-Maghrabi

Mahmoud

et al. 2022

Sci Rep

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“…36 Moreover, the Freundlich isotherm presumes that the multilayer of the adsorption process occurs on a heterogeneous surface. 27,40 The two models could be described in the following linear form: 26,41 where q e and C e are defined as above, K L (L mg −1 ) is the Langmuir adsorption constant. K F and n are the Freundlich constants.…”

Section: Resultsmentioning

confidence: 99%

Investigating the adsorption behavior of functional biochar-based porous composite for efficiently removing Cu(ii) in aqueous solution

Jin

et al. 2022

New J. Chem.

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“…Over the last few decades, the world has seen phenomenal economic growth as a result of rapid industrialization, agricultural expansion, and urbanisation.But these all factors are causing enhanced use of water in industries and thereby leading to scarcity of drinking water. [1] The continuous rise in water pollution is making it a vexing issue and hence wastewater treatment is receiving a lot of attention. Metal-related engineering effluents, synthetic polymer, food, drug and dye industries are among the significant contributor of toxic waste discharging highly dangerous and noxious pollutants.…”

Section: Introductionmentioning

confidence: 99%

Cobalt Ferrite Incorporated Ocimum sanctum Nanocomposite Matrix as an Interface for Adsorption of Organic Dyes: A Sustainable Alternative

et al. 2023

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The preparation of Cobalt ferrite-Ocimum sanctum nanocomposite, referred to as CoFe 2 O 4 /OS, has been reported along with its application for the treatment of water containing hazardous organic contaminants. A simple co-precipitation approach was applied for synthesis of magnetic nanocomposite, and a thorough analysis for its characterization was conducted using several spectroscopic and microscopic techniques. The characterization results showed that the magnetic nanocomposite exhibited substantial functional groups of Ocimum sanctum powder and magnetic ferrite part. The adsorption investigation of nanocomposite for removal of two cationic dyes was carried out with varying parameters, such as pH, contact time, temperature, concentration, and composite dosage. The sorption process was proved feasible and exothermic at the tested temperatures (303-323 K). The sorption data followed Freundlich and Temkin isotherms which recommended the physisorption progression. The kinetic study revealed a pseudo-second order rate of sorption process for both dye molecules. The facile preparation, economical cost, significant magnetic character, and high sorption capacity will surely construct the water treatment system more competent with the use of CoFe 2 O 4 /OS.

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Recent advances in magnetic composites as adsorbents for wastewater remediation

Cited by 109 publications

References 122 publications

Synergetic effect of green synthesized reduced graphene oxide and nano-zero valent iron composite for the removal of doxycycline antibiotic from water

Synergetic effect of green synthesized reduced graphene oxide and nano-zero valent iron composite for the removal of doxycycline antibiotic from water

Investigating the adsorption behavior of functional biochar-based porous composite for efficiently removing Cu(ii) in aqueous solution

Cobalt Ferrite Incorporated Ocimum sanctum Nanocomposite Matrix as an Interface for Adsorption of Organic Dyes: A Sustainable Alternative

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