Lead In drinking water: Adsorption method and role of zeolitic imidazolate frameworks for its remediation: A review

Ahmad, Khalil; Shah, Habib-ur-Rehman; Khan, Muhammad Shahzeb; Iqbal, Amjad; Potrich, Erich; Amaral, Larissa Souza; Rasheed, Sidra; Nawaz, Haq; Ayub, Asif; Naseem, Khalida; Ali, Muhammad; Yaqoob, Muhammad Rashid; Ashfaq, Muhammad

doi:10.1016/j.jclepro.2022.133010

Cited by 61 publications

(18 citation statements)

References 7 publications

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“…Since heavy metals cannot decompose through biological and chemical processes, they tend to accumulate in the environment and in living organisms, thus causing damage and dysfunction in the liver, spleen and blood and even carcinogenic effects 5 . Pb(II) as a typical heavy metal, is extremely toxic, not easily graded, and easily accumulated in the food chain 6–8 …”

Section: Introductionmentioning

confidence: 99%

“…4 Since heavy metals cannot decompose through biological and chemical processes, they tend to accumulate in the environment and in living organisms, thus causing damage and dysfunction in the liver, spleen and blood and even carcinogenic effects. 5 Pb(II) as a typical heavy metal, is extremely toxic, not easily graded, and easily accumulated in the food chain [6][7][8] As such, there is an imperative for new technologies to solve the problem of lead pollution. Currently, the common Pb(II) elimination method of water includes chemical precipitation, adsorption, ion exchanger, and membrane separation [9][10][11] Some of these methods are more or less problematic.…”

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confidence: 99%

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Evaluation of the performance of porous PBAT/modified zeolite composite materials for adsorption of Pb(II) ions from wastewater

Zhan,

Sun,

Zhang

2023

Polymer Composites

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This study is aiming to prepare the porous PBAT/modified zeolite composite by the simple, rapid, and efficient method of preparing them by the solution coating process with modified zeolite as adsorbent, as well as with PBAT as carrying agents and with ethanol as porogenic agent. Some influencing factors for adsorbing PBAT/modified zeolite composite membrane in Lead‐Ion‐Heavy Metal wastewater were researched in this paper, including the effects of zeolite content, modifier type, initial pH, pore‐making agent, adsorption time, adsorption temperature, initial concentration, and feeding quantity. In addition, the adsorption processes of the porous PBAT/modified zeolite composite membrane are studied by means of the adsorption kinetics and adsorption isotherm models. The finding shows the kinetic data were consistent with the pseudo‐second‐order model, and the data fitting of isothermal adsorption experiment is closer to the Langmuir adsorption model, which is a single‐molecule adsorption process and belongs to chemisorption, with a saturation adsorption amount of about 106.3 mg/g. Therefore, zeolite has great prospects for the removal of Pb(II) in wastewater, and provides a theoretical basis for the efficient treatment of heavy metal‐containing wastewater.Highlights A composite film that can effectively remove Pb(II) from water was prepared. The composite exhibits rational pore structure and high specific surface area. This composite has advantages of biodegradability and reproducibility.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Evaluation of the performance of porous PBAT/modified zeolite composite materials for adsorption of Pb(II) ions from wastewater

Zhan,

Sun,

Zhang

2023

Polymer Composites

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“…These methods suffer some limitations as well. These methods along with their limitations are; 1st by filtration/coagulation (using AlSO 4 which precipitates out Hg from water has detection limitation), 2nd by activated carbon (remove Hg by adsorption process has limitation because effectiveness depends upon Hg concentration), 3rd by reverse osmosis (by passing water through semi-permeable poly-amide membrane has limitation that this membrane is very expensive) and 4th by lime softening (using Ca(OH) 2 to precipitate out the heavy metal ions from water) [ 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 ].…”

Section: Introductionmentioning

confidence: 99%

Rational synthesis and characterization of highly water stable MOF@GO composite for efficient removal of mercury (Hg2+) from water

Fallatah

Shah

Ahmad

et al. 2022

Heliyon

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“…In the case of PAN, polyethylene glycol (PEG) [ 12 ], polyvinyl pyrrolidone [ 13 ], or salts [ 14 ] are usually used for membrane preparation. The addition of metal-organic frameworks [ 15 , 16 ] also can be used to improve membrane performance, but in the case of PAN, this method is less widespread.…”

Section: Introductionmentioning

confidence: 99%

Effect of Acetone as Co-Solvent on Fabrication of Polyacrylonitrile Ultrafiltration Membranes by Non-Solvent Induced Phase Separation

et al. 2022

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For the first time, the presence of acetone in the casting solutions of polyacrylonitrile (PAN) in dimethylsulfoxide or N-methyl-2-pyrrolidone was studied with regards to thermodynamical aspects of phase separation of polymeric solutions induced by contact with non-solvent (water), formation and performance of porous membranes of ultrafiltration range. The positions of the liquid equilibrium binodals on the phase diagrams of these three-component and pseudo-three-component mixtures were determined. For PAN—N-methyl-2-pyrrolidone—water glass transition curve on a ternary phase diagram was plotted experimentally for the first time. The real-time evolution of the structure of mixtures of PAN with solvents (co-solvents) upon contact with a non-solvent (water) has been studied. The thermodynamic analysis of the phase diagrams of these mixtures, together with optical data, made it possible to propose a mechanism of structure formation during non-solvent induced phase separation of different mixtures. The addition of acetone promotes the formation of a spongy layer on the membrane surface, which decreases the probability of defect formation on the membrane surface and keeps finger-like macrovoids from the underlying layers of the membrane. It was shown that the molecular weight cut-off (MWCO) of the membranes can be improved from 58 down to 1.8 kg/mol by changing the acetone content, while polymer concentration remained the same.

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Lead In drinking water: Adsorption method and role of zeolitic imidazolate frameworks for its remediation: A review

Cited by 61 publications

References 7 publications

Evaluation of the performance of porous PBAT/modified zeolite composite materials for adsorption of Pb(II) ions from wastewater

Evaluation of the performance of porous PBAT/modified zeolite composite materials for adsorption of Pb(II) ions from wastewater

Rational synthesis and characterization of highly water stable MOF@GO composite for efficient removal of mercury (Hg2+) from water

Effect of Acetone as Co-Solvent on Fabrication of Polyacrylonitrile Ultrafiltration Membranes by Non-Solvent Induced Phase Separation

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