Removal studies of lead onto activated carbon derived from lignocellulosic<i>Mangifera indica</i>seed shell

Khan, M. Nasiruddin; Bhutto, Sadaf; Wasim, Agha Arslan; Khurshid, Sualeha

doi:10.1080/19443994.2015.1043650

Cited by 11 publications

(5 citation statements)

References 29 publications

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“…Nasiruddin Khan et al used activated carbon produced from lignocellulose materials to remove the Pb. The highest removal rate occurred at 45°C and the adsorption efficiency increased with increasing temperature, while the adsorption efficiency decreased with increasing temperature in this study, which is inconsistent with the results obtained from this section (30). Cai et al used the CNs reinforced composite to remove the chromium.…”

Section: Effect Of Temperaturecontrasting

confidence: 98%

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Removal of Lead (Pb) From Aqueous Solutions Using Lignocellulose Nanofiber

Rastegar

Reaei

Yousefi

2021

Avicenna J Environ Health Eng

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The objective of this study was to investigate the removal of lead from aqueous solutions using Lignin-containing cellulose (LCNF) as natural adsorbent and advanced material in the batch system. The water sources contaminated with heavy metals, such as lead, have now become one of the major issues in the world due to non-degradability and huge adverse effects on the health of living organisms. X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), and transmission electron microscopy (TEM) were used to analyze the physical, chemical, and structural properties of LCNFs. The parameters measured in the batch system included pH (4-9), adsorbent dosage (0.1-1 g), contact time (15-120 minutes), initial lead concentration (10-50 mg/L), and temperature (15-40°C). The data for each treatment were statistically studied by analysis of variance (ANOVA) and Duncan's test. Based on the results, the optimal parameters were determined to be initial lead concentration of 10 mg/L, pH of 6, and adsorbent dosage of 0.3 g/L. The highest lead removal efficiency was achieved at 25°C. The system reached equilibrium at 60 minutes, and then there was little change in lead removal. The results of this study showed that LCNF, by removing more than 99% of lead from aqueous solutions, is a suitable adsorbent for removing lead from aqueous solutions.

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Section: Effect Of Temperaturecontrasting

confidence: 98%

“…Other test solutions were prepared daily by diluting the stock solution with the distilled water. Variable factors included pH (4, 5, 6, 7, and 8), initial Pb concentration (10,20,30,40, and 50 mg/L), and adsorbent dosage (0.1, 0.3, 0.6, 0.8, and 1 g).…”

Section: Preparation Of Standard Lead Stock Solutionmentioning

confidence: 99%

Removal of Lead (Pb) From Aqueous Solutions Using Lignocellulose Nanofiber

Rastegar

Reaei

Yousefi

2021

Avicenna J Environ Health Eng

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“…The results show that the adsorption process is better adjusted to the Freundlich model (R ¼ 0.98). Even though the K F parameter of Freundlich is related to the adsorption capacity, it does not provide the maximum removal capacity, since the Freundlich model does not predict adsorbent saturation (Khan et al 2016). The value of the Freundlich constant obtained was 19.05, the value of n (6,6) indicates that the adsorption is favorable.…”

Section: Adsorption Isothermmentioning

confidence: 94%

Preparation of activated charcoal adsorbent from pitombeira seeds (Talisia esculenta) and its application for Ca2+ ions removal

et al. 2021

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Water quality that the population has access to can undergo a series of changes, contaminations and interferences. The poor water quality may be related to several contaminations sources and can pose a health risk for ecosystem and for people. Calcium ion is a determinant of water hardness, and its excess in the human body can result in a series of complications and diseases such as renal and bladder lithiasis. The seeds of the Pitombeira (Talisia esculenta) were used to produce phosphoric acid activated carbon (PAC). Adsorption studies were conducted by batch technique, and isothermal and kinetic models were systematically used to evaluate the potential of PAC to remove Ca2+ ions from the aqueous media. The adsorbent was characterized using BET surface area (141.6 m2/g), SEM, pHPZC (2,75), Boehm titration, and by content analysis of the moisture and ashes. The time required for the system to equilibrate was only 5 min. According to the kinetics study, the data were the best fit by the pseudo-second-order model, while the equilibrium sorption data fitted well with the Freundlich's model, with a maximum adsorption capacity of 19.05 mg/g, with 90% of Ca2+ ions removal. Therefore, due to its efficiency and low-cost, PAC could be employed as an alternative adsorbent for Ca2+ removal.

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“…Kardam et al (2014) reported that both Langmuir and Freundlich isotherm models, almost identically, had a high fit for the removal process of cadmium, nickel, and lead from aqueous solutions by cellulose nanofibers [31]. Nasiruddin Khan et al (2015) reported that the lead removal process by lignocellulosic activated carbon was more consistent with the Freundlich isotherm model [32]. The copper removal process by chitin adsorbent, which was studied by Labidi et al (2016) was evaluated and showed that the resulting data were more consistent with the Langmuir isotherm [33].…”

Section: Evaluation Of Adsorption Isothermsmentioning

confidence: 97%

“…In this model, it is assumed that a surface contains a certain number of equivalent sites where absorbable ions can be chemically or physically attached to that site. Physical adsorption includes Van der Waals collisions and chemical adsorption includes the formation of covalent bonds between adsorbate and adsorbent [30][31][32][33].…”

Section: Evaluation Of Adsorption Isothermsmentioning

confidence: 99%

Untitled

2023

J. Med. Chem. Sci.

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Removal studies of lead onto activated carbon derived from lignocellulosicMangifera indicaseed shell

Cited by 11 publications

References 29 publications

Removal of Lead (Pb) From Aqueous Solutions Using Lignocellulose Nanofiber

Removal of Lead (Pb) From Aqueous Solutions Using Lignocellulose Nanofiber

Preparation of activated charcoal adsorbent from pitombeira seeds (Talisia esculenta) and its application for Ca2+ ions removal

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