Removal of Pb(<scp>ii</scp>) and Cd(<scp>ii</scp>) from wastewater using arginine cross-linked chitosan–carboxymethyl cellulose beads as green adsorbent

Manzoor, Kaiser; Ahmad, Mudasir; Ahmad, Suhail; Ikram, Saiqa

doi:10.1039/c9ra00356h

Cited by 118 publications

(39 citation statements)

References 55 publications

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“…However, the recyclability of the used adsorbent and recovery of Pb metal ions is one of the most important issues from the environmental and economical point of views. (Manzoor et al, 2019;Niu et al, 2017)Thus, we have performed a life cycle assessment experiments for thepristine and oxidized CBs. The results of Figure 9 have indicated that, after a 5 adsorption/desorption cycles, oxidized CB has showed a 70% adsorption efficiency of Pb ions compared to almost the same ratio for pristine CB.…”

Section: Resultsmentioning

confidence: 99%

Efficient Removal of the Toxic Lead Ions from ContaminatedSandy Soils using Newly Engineered Carbon Black Nanoadsorbent

Hafez

2019

Alexandria Journal of Agricultural Sciences

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Soils contaminated with heavy metals can embarrass a fatal risk to the environment and human life via the direct uptake of the heavy metal-contaminated agricultural crops. Hence, the treatment of metal-contaminated soils is attracting a lot of research activities to reduce the negative impact on the environment. In the current study, I have activated the surface of the carbon black (CB) adsorbent by introducing functional groups capable to efficiently capture the lead (Pb) metal ions from a Pb-contaminated sandy soil. The soil properties (e.g. electrical conductivity, acidity, carbon and nitrogen content, and organic matter) were studied before and after the treatment with the CB adsorbent. I also showed a comprehensive adsorption study in soil-batch extraction experiments, evaluating a series of factors such as the effects of soil pH (pH 3.0 to pH 7.0), Pb concentration into the soil (5-100 mg/L), and the soil temperature (15-50 °C).Furthermore, the recyclability of the adsorbent was highlighted to evaluate adsorption efficiency upon use. The results of the study were remarkable where a 100 % removal efficiency of Pb ions was obtained using only a 40 ppm of the oxidized CB compared to a 60% removal efficiency when using a pristine CB at the same concentration. The adsorption capacity of Pb ions was as high as 100 mg/g at 30 mg/L of oxidized CB adsorbent. The life cycle of oxidized CB adsorbent was also remarkable compared to that of pristine adsorbent. The recyclability data of the functionalized CB has showed an easy regeneration process with an efficient reusefor 5 cycles with 30 %a performance decline of 30 % only from the initial adsorption efficiency.

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Section: Resultsmentioning

confidence: 99%

Efficient Removal of the Toxic Lead Ions from ContaminatedSandy Soils using Newly Engineered Carbon Black Nanoadsorbent

Hafez

2019

Alexandria Journal of Agricultural Sciences

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“…Adsorption kinetics, which concerns the mass transfer of the adsorption process, is an important consideration in the practical application of potential adsorbents. [38][39][40] Fig. 4B 4 .…”

Section: Adsorption Kineticsmentioning

confidence: 99%

PAMPS-graft-Ni₃Si₂O₅(OH)₄ multiwalled nanotubes as a novel nano-sorbent for the effective removal of Pb(ii) ions

Xiao

Lin

2020

RSC Adv.

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“…Initially, thermal energy increased with the rising temperature, giving rise to more probability of binding the metal ions with the vacancies on the adsorbent. But when the thermal vibration of the metal ion was faster than the metal-adsorbent interaction, the metal ion was released back into the solution, resulting in reduced adsorption [55]. Figure 9.…”

Section: Effect Of Temperaturementioning

confidence: 99%

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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Removal of Pb(ii) and Cd(ii) from wastewater using arginine cross-linked chitosan–carboxymethyl cellulose beads as green adsorbent

Abstract: Remediation of Pb(ii) and Cd(ii) containing wastewater by arginine crosslinked chitosan/carboxymethyl cellulose beads.

Cited by 118 publications

References 55 publications

Efficient Removal of the Toxic Lead Ions from ContaminatedSandy Soils using Newly Engineered Carbon Black Nanoadsorbent

Efficient Removal of the Toxic Lead Ions from ContaminatedSandy Soils using Newly Engineered Carbon Black Nanoadsorbent

PAMPS-graft-Ni₃Si₂O₅(OH)₄ multiwalled nanotubes as a novel nano-sorbent for the effective removal of Pb(ii) ions

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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Removal of Pb(ii) and Cd(ii) from wastewater using arginine cross-linked chitosan–carboxymethyl cellulose beads as green adsorbent

Abstract: Remediation of Pb(ii) and Cd(ii) containing wastewater by arginine crosslinked chitosan/carboxymethyl cellulose beads.

Cited by 118 publications

References 55 publications

Efficient Removal of the Toxic Lead Ions from ContaminatedSandy Soils using Newly Engineered Carbon Black Nanoadsorbent

Efficient Removal of the Toxic Lead Ions from ContaminatedSandy Soils using Newly Engineered Carbon Black Nanoadsorbent

PAMPS-graft-Ni3Si2O5(OH)4 multiwalled nanotubes as a novel nano-sorbent for the effective removal of Pb(ii) ions

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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PAMPS-graft-Ni₃Si₂O₅(OH)₄ multiwalled nanotubes as a novel nano-sorbent for the effective removal of Pb(ii) ions