Adsorption of Pb(II) by a polyvinylidene fluoride membrane bearing chelating poly(amino phosphonic acid) and poly(amino carboxylic acid) groups

Wang, Xiuli; Liu, Pei; Liu, Fushun; Wang, Xuechun; Ji, Min; Song, Laizhou

doi:10.1177/0263617418795531

Cited by 13 publications

(10 citation statements)

References 49 publications

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“…and 5B). Figure 5C shows the cavities of different shapes and sizes, and larger pores between the particles could be observed which will be helpful for the solution permeating through the GCHM (Wang et al, 2018).…”

Section: Characterization Of Hydrogelmentioning

confidence: 99%

Synthesis of Gelatin-Cellulose Nanocrystals Hydrogel Membrane For Removal of Cu (II) And Co (II) From Mining Processes Wastewater

Kabuba

Lukusa

2021

Preprint

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This study describes the removal of Cu (II) and Co (II) ions from mining processes wastewater using synthesis of Gelatin-cellulose nanocrystals (CNCs) hydrogel membrane (GCHM). In a batch experiment, the influence of different parameters such as pH, contact time, temperature, and ratio of gelatin and CNCs was evaluated. Higher removal efficiency was obtained at ratio 3 ÷ 1 and at pH 5 and 7 for Cu (II) and Co (II), respectively, and a contact time of 120 mins and a temperature of 30°C. The experimental data fitted satisfactory to Freundlich isotherm model. The adsorption of metal ions has been fit by the particle diffusion model. The results revealed that gelatin and CNCs were identified as the low-cost and promising adsorption material for the removal of heavy metals from wastewater.

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Section: Characterization Of Hydrogelmentioning

confidence: 99%

Synthesis of Gelatin-Cellulose Nanocrystals Hydrogel Membrane For Removal of Cu (II) And Co (II) From Mining Processes Wastewater

Kabuba

Lukusa

2021

Preprint

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“…Several techniques such as chemical precipitation (Akinterinwa and Adibayo 2018), electrocoagulation (Abbas and Ali 2018), adsorption (Ghasemi et al 2014), ion exchange (Bezzina et al 2019), and membrane filtration (Wang et al 2018) have been implemented for removal of lead However, these technologies have many limitations such as high cost for energy and maintenance, and the emergence of toxic byproducts. On the other hand, biological agents such as microorganisms offer easy, ecofriendly, cost-effective, and efficient methods for Pb remediation (Gupta and Joia 2016;Ayangbenro and Babalola 2017;Jacob et al 2018;Sharma et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Thermophilic bacteria isolated from Mount Merapi, Java, Indonesia as a potential lead bioremediation agent

2021

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Abstract. Rakhmawati A, Wahyuni ET, Yuwono T. 2021. Thermophilic bacteria isolated from Mount Merapi, Java, Indonesia as a potential lead bioremediation agent. Biodiversitas 22: 3101-3110. Contamination by lead (Pb) has become a serious health and environmental problem, that has to be urgently prevented. Bioremediation is one of the environmentally friendly methods for eliminating Pb from the contaminated environment. This study was aimed to investigate the potency of lead-tolerant thermophilic bacteria isolated from solfatara Mount Merapi, Indonesia. A total of 340 isolates of thermophilic bacteria were screened for lead tolerance at 55 °C. Five bacterial isolates were found to show tolerance to 100 mg/L Pb (II), and then were further evaluated and identified as Aeribacillus pallidus strains MRP112, MRP148, MRP272, MRP278, and MRP280 based on 16S rRNA gene sequences analysis. Among the five isolates, A. pallidus MRP 280 showed highest activity in removing Pb at pH 6, 55°C for 24 h. The analysis of scanning and transmission electron microscopy, biofilm formation, and siderophore production, demonstrated that lead tolerance of A. pallidus MRP 280 strain was also accompanied by morphological changes, bioaccumulation, biosorption, biofilm, and siderophore assembly. In conclusion A. pallidus MRP 280 was demonstrated as one of the most potential bacterial strains, can be recommended as an agent for high-temperature lead bioremediation.

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“…Functionalized monomers that offer carboxylic group to the trunk polymer will modify the hydrophilic properties of the graft PTFE copolymer. The electronegative carboxyl and hydroxyl group anchored on the film surface will lead copolymer to become potential metal ion adsorbent (Wang et al 2018). In this study, acrylic acid (AAC) was chosen as the grafting monomer to introduce carboxylic acid groups onto the surface of PTFE film via radiation grafting.…”

Section: Introductionmentioning

confidence: 99%

Modification of PTFE Flat Sheet Film via Radiation Induced Grafting Polymerization with Acrylic Acid

Ghani¹,

Hamzah²,

Mohamed³

2020

JSM

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Polytetrafluoroethylene (PTFE) flat sheet film was modified with acrylic acid (AAC) by radiation induced grafting polymerization (RIGP) method using electron beam. The adsorbed doses were varied from 10 to 50 kGy, time of grafting from 1 to 3 h and monomer concentration and temperature were kept constant at 30 wt. % and 40ºC. The degree of grafting (D g) and equilibrium degree of swelling (EDS) of the grafted films were then determined. The films were further characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), atomic force microscope (AFM), X-ray diffraction (XRD), and optical water contact angle. D g within the range of 17% to 210% were obtained for doses from 10 to 50 kGy within time of grafting from 1 to 3 h. The grafted film (PTFE-g-AAC) showed increased hydrophilicity leading to an increase in EDS. The successful grafting process was confirmed by FTIR results that showed characteristics peaks for carbonyl and hydroxyl group and a decrease in crystallinity for the PTFE-g-AACfilm. SEM images showed that PTFE-g-AAC films had less fibrillar compared to PTFE film and was consistent with the decrease in roughness for the PTFE-g-AAC film. This study indicated that modifying PTFE film by grafting AAC could significantly improve the hydrophilicity of PTFE film. The PTFE-g-AAC films has potential as a heavy metal adsorbent as it can remove at least 75% of Fe ion and 50 % of Pb ion from competitive media.

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Adsorption of Pb(II) by a polyvinylidene fluoride membrane bearing chelating poly(amino phosphonic acid) and poly(amino carboxylic acid) groups

Cited by 13 publications

References 49 publications

Synthesis of Gelatin-Cellulose Nanocrystals Hydrogel Membrane For Removal of Cu (II) And Co (II) From Mining Processes Wastewater

Synthesis of Gelatin-Cellulose Nanocrystals Hydrogel Membrane For Removal of Cu (II) And Co (II) From Mining Processes Wastewater

Thermophilic bacteria isolated from Mount Merapi, Java, Indonesia as a potential lead bioremediation agent

Modification of PTFE Flat Sheet Film via Radiation Induced Grafting Polymerization with Acrylic Acid

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