Facile and efficient removal of Pb(II) from aqueous solution by chitosan-lead ion imprinted polymer network

Gatabi, Javad; Sarrafi, Yaghoub; Lakouraj, Moslem Mansour; Taghavi, Mehdi

doi:10.1016/j.chemosphere.2019.124772

Cited by 42 publications

(12 citation statements)

References 43 publications

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“…Li et al (2019) looked at mixed solutions of Pd (II) and Cd (II) for adsorption onto double-imprinted electrospun crosslinked chitosan nanofibers (Pd/Cd-DIECCNs) and reported adsorption capacities of 567 and 371 mg g −1 for Pd (II) and Cd (II), respectively. Similarly IIPs bio-nanomaterials were reported by Xu et al (2015) and Gatabi et al (2020). Lately, further upgrades on chitosan containing IIPs have been made to better selectivity and adsorption efficiency (Pakdel and Peighambardoust 2018).…”

Section: Ion Imprinted Polymers As Adsorbentsmentioning

confidence: 72%

Recent developments in materials used for the removal of metal ions from acid mine drainage

Mokgehle

Tavengwa

2021

Appl Water Sci

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Acid mine drainage is the reaction of surface water with sub-surface water located on sulfur bearing rocks, resulting in sulfuric acid. These highly acidic conditions result in leaching of non-biodegradeable heavy metals from rock which then accumulate in flora, posing a significant environmental hazard. Hence, reliable, cost effective remediation techniques are continuously sought after by researchers. A range of materials were examined as adsorbents in the extraction of heavy metal ions from acid mine drainage (AMD). However, these materials generally have moderate to poor adsorption capacities. To address this problem, researchers have recently turned to nano-sized materials to enhance the surface area of the adsorbent when in contact with the heavy metal solution. Lately, there have been developments in studying the surface chemistry of nano-engineered materials during adsorption, which involved alterations in the physical and chemical make-up of nanomaterials. The resultant surface engineered nanomaterials have been proven to show rapid adsorption rates and remarkable adsorption capacities for removal of a wide range of heavy metal contaminants in AMD compared to the unmodified nanomaterials. A brief overview of zeolites as adsorbents and the developent of nanosorbents to modernly applied magnetic sorbents and ion imprinted polymers will be discussed. This work provides researchers with thorough insight into the adsorption mechanism and performance of nanosorbents, and finds common ground between the past, present and future of these versatile materials.

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Section: Ion Imprinted Polymers As Adsorbentsmentioning

confidence: 72%

Recent developments in materials used for the removal of metal ions from acid mine drainage

Mokgehle

Tavengwa

2021

Appl Water Sci

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“…Compared with currently environment-unfriendly desorption approaches, e.g., using nitric acid as an eluting agent [34], CPIT exhibits outstanding superiority to realize desorption via cold deionized water rinsing. As shown in Figure 8a, the desorption efficiency of CPIT decreases with the elevation of temperature and the maximum value is achieved as 93.8% when the temperature is controlled at 5 • C. As mentioned before, low temperature enlarges the pore size of active recognition sites and meanwhile weakens the interactions between Pb(II) ions and CPIT molecular chains, which eventually promotes the desorption of Pb(II).…”

Section: Desorption Performance Of Cpitmentioning

confidence: 99%

Cassava Starch-Based Thermo-Responsive Pb(II)-Imprinted Material: Preparation and Adsorption Performance on Pb(II)

Zhang

et al. 2022

Polymers

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Heavy metal pollution is currently an increasing threat to the ecological environment, and the development of novel absorbents with remarkable adsorption performance and cost-effectiveness are highly desired. In this study, a cassava starch-based Pb(II)-imprinted thermo-responsive hydrogel (CPIT) had been prepared by using cassava starch as the bio-substrate, N-isopropyl acrylamide (NIPAM) as the thermo-responsive monomer, and Pb(II) as the template ions. Later, a variety of modern techniques including FTIR, DSC, SEM, and TGA were employed to comprehensively analyze the characteristic functional groups, thermo-responsibility, morphology, and thermal stability of CPIT. The obtained material exhibited superior performance in adsorption of Pb(II) and its maximum adsorption capacity was high—up to 114.6 mg/g under optimized conditions. Notably, the subsequent desorption (regeneration) process was fairly convenient by simply rinsing with cold deionized water and the highest desorption efficiency could be achieved as 93.8%. More importantly, the adsorption capacity of regenerated CPIT still maintained 88.2% of the value of starting material even after 10 recyclings. In addition, the excellence of CPIT in selective adsorption of Pb(II) should also be highlighted as its superior adsorption ability (97.9 mg/g) over the other seven interfering metal ions.

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“…So far, several types of sorbent materials, including clay minerals [9,10], zeolite [11], carbon materials [12][13][14][15], natural and synthetic polymers etc. [16][17][18][19], have been reported to isolate Pb(II) from water phase. Nevertheless, extensive use of these sorbents was very restrictive due to their complex operations (such as filtering and centrifugation) in adsorbent recollection after usage.…”

Section: Introductionmentioning

confidence: 99%

Removal of Pb(II) Ions from Wastewater by Using Polyethyleneimine-Functionalized Fe3O4 Magnetic Nanoparticles

Zhang

Lü

et al. 2020

Applied Sciences

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A class of polyethyleneimine (PEI)-functionalized Fe 3 O 4 magnetic nanoparticles (MNPs) has been facilely produced through a solvothermal process. The synthetic MNPs have been characterized by multiple technologies and then used for Pb(II) ion sorption from the aqueous media in different conditions. It was found the Pb(II) adsorption behaviors could be well fitted by the pseudo second-order kinetic and Langmuir isotherm models. The maximum Pb(II) adsorption capacity at 25 • C and pH 5.0 was calculated to be 60.98 mg/g. Moreover, effects of temperature, pH, and electrolyte of aqueous phase on the Pb(II) adsorption capacity of MNPs have been carefully examined. The Pb(II) adsorbing capacity was enhanced with temperature or pH rising, but reduced with the addition of various electrolytes. Additionally, the recyclability of synthetic MNPs has been also assessed. The prepared PEI-functionalized MNPs could still maintain good adsorption performance after five cycles of Pb(II) removal. These results indicated that the PEI-functionalized Fe 3 O 4 MNPs could be readily synthesized and served as a desirable and economic adsorbent in Pb(II)-contaminated wastewater treatment.

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Facile and efficient removal of Pb(II) from aqueous solution by chitosan-lead ion imprinted polymer network

Cited by 42 publications

References 43 publications

Recent developments in materials used for the removal of metal ions from acid mine drainage

Recent developments in materials used for the removal of metal ions from acid mine drainage

Cassava Starch-Based Thermo-Responsive Pb(II)-Imprinted Material: Preparation and Adsorption Performance on Pb(II)

Removal of Pb(II) Ions from Wastewater by Using Polyethyleneimine-Functionalized Fe3O4 Magnetic Nanoparticles

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