Organic micropollutants and disinfection byproducts removal from drinking water using concurrent anion exchange and chlorination process

Li, Xiuwen; Li, Aimin; Li, Zekai; Sun, Hongfang; Shi, Peng; Zhou, Qing; Shuang, Chendong

doi:10.1016/j.scitotenv.2020.141470

Cited by 14 publications

(1 citation statement)

References 51 publications

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“…Various techniques have been used for metal elimination and water purification such as coagulation, flocculation ( Sher et al, 2020 ; Li et al, 2023 ), anion-exchange separation ( Li et al, 2021 ), membrane filtration, ultrafiltration ( Jiang et al, 2023 ), chemical treatment, electro-dialysis, photocatalysis ( Suresh, et al, 2023 ), reverse osmosis, and ozonation ( Rout et al, 2021 ), and biological processes ( Deng et al, 2021 ) such as microalgae cultivation with the membrane separation process ( Mat Aron et al, 2021 ), bioremediation with energy production ( Khoo et al, 2021 ), and adsorption ( Esmaeili Bidhendi et al, 2023 ). Among all, the adsorption process is considered preferable over many other techniques due to its simple design, no sludge formation, process suitability, and low cost ( Srivastava et al, 2020 ; Rajabi et al, 2023 ).…”

Section: Introductionmentioning

confidence: 99%

Kinetic and equilibrium study of graphene and copper oxides modified nanocomposites for metal ions adsorption from binary metal aqueous solution

Ali,

Kareem,

Al-Rawi

et al. 2023

Front. Chem.

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Presently, the main cause of pollution of natural water resources is heavy metal ions. The removal of metal ions such as nickel (Ni2+) and cadmium (Cd2+) has been given considerable attention due to their health and environmental risks. In this regard, for wastewater treatment containing heavy metal ions, graphene oxide (GO) nanocomposites with metal oxide nanoparticles (NPs) attained significant importance. In this study, graphene oxide stacked with copper oxide nanocomposites (GO/CuO-NCs) were synthesized and characterized by Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and atomic force microscopy (AFM) analytical procedures. The prepared GO/CuO-NCs were applied for the removal of Ni2+ and Cd2+ ions from a binary metal ion system in batch and continuous experiments. The obtained results revealed that GO/CuO-NCs exhibited the highest removal efficiencies of Ni2+ (89.60% ± 2.12%) and Cd2+ (97.10% ± 1.91%) at the optimum values of pH: 8, dose: 0.25 g, contact time: 60 min, and at 50 ppm initial metal ion concentration in a batch study. However, 4 mL/min flow rate, 50 ppm initial concentration, and 2 cm bed height were proved to be the suitable conditions for metal ion adsorption in the column study. The kinetic adsorption data exhibited the best fitting with the pseudo-second-order model. The adsorption isotherm provided the best-fitting data in the Langmuir isotherm model. This study suggested that the GO/CuO nanocomposites have proved to be efficient adsorbents for Ni2+ and Cd2+ ions from a binary metal system.

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Section: Introductionmentioning

confidence: 99%

Kinetic and equilibrium study of graphene and copper oxides modified nanocomposites for metal ions adsorption from binary metal aqueous solution

Ali,

Kareem,

Al-Rawi

et al. 2023

Front. Chem.

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Synthesis of a Novel Porous Self‐Settling Magnetic Anion Exchange Resin and its Removal Mechanism for Tannic Acid

Xiao,

Wang,

et al. 2023

ChemistrySelect

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A new porous self‐precipitating magnetic anion exchange resin (CMIET) doped with γ‐Fe2O3 was prepared by suspension polymerisation and characterized by FT‐IR, TGA, SEM, BET, and VSM. An adsorbent with a rough surface porous structure, enriched with a mesoporous strong magnetic self‐absorbent was obtained. A specific surface area of 19.10 m2/g, a pore volume of 0.2045 cm3/g, a pore size of 36.71 nm exchange capacity of 7.81 mmol/g, and an equilibrium adsorption capacity of up to 46.28 mg/g were measured. The effects of contact time, initial concentration, and solution pH were investigated by batch adsorption experiments. In the removal process, the removal rate of TA was up to 95 % at pH=4–7, saturation adsorption was achieved in 30 min, and regeneration time of 120 min could restore the resin activity. The adsorption isotherm of TA on the resin was by the Langmuir model, the adsorption kinetics was by the Pseudo Secondary Kinetic model, and the adsorption process was spontaneous heat absorption. The regeneration experiments showed good reusability of CMIET, a highly efficient and fast magnetic ion exchange resin with a wide range of applications in the aqueous environment.

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Removal of halides from drinking water: technological achievements in the past ten years and research needs

Chowdhury

Koyappathody

Karanfil

2022

Environ Sci Pollut Res

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Organic micropollutants and disinfection byproducts removal from drinking water using concurrent anion exchange and chlorination process

Cited by 14 publications

References 51 publications

Kinetic and equilibrium study of graphene and copper oxides modified nanocomposites for metal ions adsorption from binary metal aqueous solution

Kinetic and equilibrium study of graphene and copper oxides modified nanocomposites for metal ions adsorption from binary metal aqueous solution

Synthesis of a Novel Porous Self‐Settling Magnetic Anion Exchange Resin and its Removal Mechanism for Tannic Acid

Removal of halides from drinking water: technological achievements in the past ten years and research needs

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