Preparation and characterization of the eco-friendly chitosan/vermiculite biocomposite with excellent removal capacity for cadmium and lead

Chen, Liya; Wu, Pingxiao; Chen, Meiqing; Lai, Xiaolin; Ahmed, Zubair; Zhu, Nengwu; Dang, Zhi; Bi, Yingzhi; Liu, Tongyun

doi:10.1016/j.clay.2017.12.050

Cited by 112 publications

(44 citation statements)

References 46 publications

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“…Therefore, MB being a cationic dye (+ve) possesses higher adsorption capacity than CR which is an anionic dye (−ve). Furthermore, also maximum capacities ( Q m ) of ZnONP CS were compared with the different reported adsorbents and tabulated for the studied metal and dyes (Tables and ).…”

Section: Resultsmentioning

confidence: 99%

Casein based biogenic‐synthesized zinc oxide nanoparticles simultaneously decontaminate heavy metals, dyes, and pathogenic microbes: a rational strategy for wastewater treatment

Somu

Paul

2018

J of Chemical Tech & Biotech

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BACKGROUND Wastewater management has become a great concern recently due to industrial and domestic discharges containing metals, organic pollutants and pathogenic microbes that contaminate water bodies and also cause waterborne diseases. Although there have been multiple conventional processes for removing contaminants, nanomaterials have recently gained importance for wastewater treatments. RESULTS Here, ZnONPCS with an average size of 10 nm was successfully synthesized by using casein as biogenic reducing and capping agent. Removal of three metals and two dyes was investigated and it was found that nearly 90% was removed. Adsorption isotherm data were best fitted with the Langmuir model, and the maximum adsorption capacity (mg g−1) was found to be 156.74 for Cd(II), 194.93 for Pd(II), 67.93 for Co(II), 115.47 for methylene blue and 62.19 for congo red. Repeated cycles of regeneration and reuse showed a drop in removal efficiency of 10–13%. Further, nanoparticles also showed efficient photo‐degradation of dyes within 240 min. Moreover, ZnONPCS demonstrated high antibacterial potential for Escherichia coli in the presence of metals and dyes. CONCLUSION Biogenic synthesized ZnONPCS demonstrated simultaneous removal of metals, dyes as well as pathogenic microbes, and could be used as a cost‐effective and reusable system in various industrial effluent treatments. © 2018 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Casein based biogenic‐synthesized zinc oxide nanoparticles simultaneously decontaminate heavy metals, dyes, and pathogenic microbes: a rational strategy for wastewater treatment

Somu

Paul

2018

J of Chemical Tech & Biotech

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“…It is appropriate for determination of elemental chemical concentrations in samples (Chang et al, 2006). Even in this research, the chitosan using as natural coagulant for iron-contaminated groundwater treatment, furthermore chitosan is also counted as natural adsorbent results from the presence of amine and hydroxyl groups (Chen et al, 2018;Ngwabebhoh et al, 2016) besided its chemical composition as shown in Table 2. that have contribution for iron removal.…”

Section: Characterization Of Chitosanmentioning

confidence: 90%

“…According to current research, fishery wastes are a useful material that can be used as raw material for the manufacture of chitin and chitosan. Chitin and chitosan have high potential in new functional biomaterials in areas such as cosmetics, agriculture, food and biomedical and textile industries as chelating agents, industrial waste treatment and biotechnology applications (Chen et al, 2018;Lodhi et al, 2014;Oladoja, 2015).…”

Section: Introductionmentioning

confidence: 99%

Biopolymer of Chitosan from Fish Scales as Natural Coagulant for Iron–Contaminated Groundwater Treatment

Irawan

Nata

Putra

et al. 2018

J. Rekayasa Kim. Lingkung.

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Chitosan, the de-acetylated chitin derivative, was evaluated for its ability to be used as a natural coagulant for Martapura groundwater treatment. This study is used chitosan derived from original fish scales of Kalimantan called Papuyu (Anabas testudineus) for the treatment of iron ion-containing Martapura groundwater through coagulation-flocculation method. The reduction efficiency of iron ion removed by coagulation-flocculation processes using chitosan from Papuyu fish scales is the primary evaluating parameter. The obtained chitosan have been characterized and analyzed by Fourier transforms infrared spectroscopy (FTIR), X-ray Fluroscence (XRF) and Scanning electron microscopy (SEM). Using of the chitosan from Papuyu fish scales as coagulant at neutral pH and room temperature led to decreasing the groundwater iron concentration become 3.43 mg/L (around 71% removal). The result was then compare to the coagulation-flocculation treatment using the commercial chitosan from shrimps shell (93% deacetylated). Moreover, its found the coagulation-flocculation treatment using the chitosan from fish scales as coagulant more favor than the commercial one.

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“…X-ray photoelectron spectroscopy (XPS) was used to further examine the adsorption mechanism. As shown in figure 4, there were main peaks C1s, O1s and N1s shown in the XPS wide-scan spectra of AO CS-g-PAN before and after loaded Cu(II) and Pb(II) [45]; furthermore, characteristic peaks emerged after the adsorption belonging to Pb4f (4f 7/2 138.54 eV, 4f 5/2 143.42 eV) and Cu2p (2p 3/2 933.98 eV, 2p 1/2 953.6 eV), respectively, which indicated that the Pb(II) and Cu(II) have been adsorbed successfully. Moreover, the O1s spectrum and N1s spectrum of the adsorbent before and after the loaded metal ions are depicted in figures 5 and 6 separately.…”

Section: Xps Spectrum Analysismentioning

confidence: 93%

Corn stalk as starting material to prepare a novel adsorbent via SET-LRP and its adsorption performance for Pb(II) and Cu(II)

Wang

et al. 2020

R. Soc. open sci.

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Corn stalk was used as the initial material to prepare a corn stalk matrix-g-polyacrylonitrile-based adsorbent. At first, the corn stalk was treated with potassium hydroxide and nitric acid to obtain the corn stalk-based cellulose (CS), and then the CS was modified by 2-bromoisobutyrylbromide (2-BiBBr) to prepare a macroinitiator. After that, polyacrylonitrile (PAN) was grafted onto the macroinitiator by single-electron transfer living radical polymerization (SET-LRP). A novel adsorbent AO CS-g-PAN was, therefore, obtained by introducing amidoxime groups onto the CS-g-PAN with hydroxylamine hydrochloride (NH 2 OH · HCl). FTIR, SEM and XPS were applied to characterize the structure of AO CS-g-PAN. The adsorbent was then employed to remove Pb(II) and Cu(II), and it exhibited a predominant adsorption performance on Pb(II) and Cu(II). The effect of parameters, such as temperature, adsorption time, pH and the initial concentration of metal ions on adsorption capacity, were examined in detail during its application. Results suggest that the maximum adsorption capacity of Pb(II) and Cu(II) was 231.84 mg g –1 and 94.72 mg g −1 , and the corresponding removal efficiency was 72.03% and 63%, respectively. The pseudo-second order model was more suitable to depict the adsorption process. And the adsorption isotherm of Cu(II) accorded with the Langmuir model, while the Pb(II) conformed better to the Freundlich isotherm model.

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Preparation and characterization of the eco-friendly chitosan/vermiculite biocomposite with excellent removal capacity for cadmium and lead

Cited by 112 publications

References 46 publications

Casein based biogenic‐synthesized zinc oxide nanoparticles simultaneously decontaminate heavy metals, dyes, and pathogenic microbes: a rational strategy for wastewater treatment

Casein based biogenic‐synthesized zinc oxide nanoparticles simultaneously decontaminate heavy metals, dyes, and pathogenic microbes: a rational strategy for wastewater treatment

Biopolymer of Chitosan from Fish Scales as Natural Coagulant for Iron–Contaminated Groundwater Treatment

Corn stalk as starting material to prepare a novel adsorbent via SET-LRP and its adsorption performance for Pb(II) and Cu(II)

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