Adsorptive remediation of Pb(II) from aqueous media using Schleichera oleosa bark

Khatoon, Amna; Uddin, Mohammad Kashif; Rao, Rifaqat Ali Khan

doi:10.1016/j.eti.2018.04.004

Cited by 39 publications

(13 citation statements)

References 34 publications

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“…It can be seen that ΔS is above 0 and ΔS of PMGO is larger than that of MP, indicating the increased randomness at the adsorbent-adsorbate interface of PMGO for Pb 2+ adsorption (Ahsan et al, 2019). ΔH of adsorbents is above 0 as shown in Table 4 , suggesting that the adsorption is endothermic (Khatoon et al, 2018) while ΔG is less than 0, indicating spontaneous adsorption . From the thermodynamic parameters, it can be concluded that the Pb2+ adsorption by PMGO and MP are thermodynamically favorable, and the increase in temperature is beneficial to the adsorption (Ahsan et al, 2019).…”

Section: Adsorbent T(k)mentioning

confidence: 92%

Pb(Ⅱ) adsorption characteristics of magnetic GO-hydroxyapatite and the contribution of GO to enhance its acid resistance

Liu

Lan

et al. 2021

Journal of Environmental Chemical Engineering

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Section: Adsorbent T(k)mentioning

confidence: 92%

Pb(Ⅱ) adsorption characteristics of magnetic GO-hydroxyapatite and the contribution of GO to enhance its acid resistance

Liu

Lan

et al. 2021

Journal of Environmental Chemical Engineering

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“…Response surface methodology was used to reduce experiments number, to evaluate the effect of different factors and their interactions on the response and hence to determine optimal conditions (Cho and Zoh, 2007;Ghaedi et al, 2015;Wang et al, 2007). Box-Behnken design is the most frequently used one of response surface methodology that has been applied in several studies especially to analyse and validate adsorption data (Aslani et al, 2018;Bilgin Simsek et al, 2015;Khatoon et al, 2018;Shah et al, 2017;Subramaniam et al, 2015). In the present work, experimental study of tannic acid adsorption onto calcite was performed according to Box-Behnken design.…”

Section: Response Surface Methodology: Box-behnken Experimental Designmentioning

confidence: 99%

Preparation and characterization of calcite for tannic acid adsorption: Optimization by response surface methodology coupled by Box-Cox transformation procedure

Tangarfa¹,

Hassani²,

Alaoui³

2021

Physicochem. Probl. Miner. Process.

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Calcite depression is the most effective physicochemical process to valorize fluorine mineral. This process is achieved by adsorption of tannic acid, as the commonly used reagent, onto calcite. Adsorption investigation is very important in mineral processing. The present work focuses on optimization of physicochemical parameters of tannic acid adsorption onto calcite. Experimental study is carried out by a response surface methodology based on Box-Behnken design. Obtained results are exploited to develop a statistical model. Analysis of variance and residuals are performed to check the significance of tested models. Among these models, Cox-Box model predicts very well the obtained experimental data. This model shows that initial tannic acid concentration and solution pH as well as their interactions are the most significant parameters. Optimal conditions are achieved using the obtained statistical model. The present investigation is an important preliminary step to better understand calcite flotation behavior using tannic acid as a depressant.

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“…However, as these materials are not the direct byproducts of agricultural activities, the forest waste-based adsorbents are separately discussed in this study. The natural processes of shedding tree leaves and barks have made forests the abundant sources of low-cost and environment-friendly raw materials for the adsorbents (Bhattacharyya and Sharma 2004 ; Khatoon et al 2018 ). Several past studies have investigated the forest waste-based adsorbents in removing heavy metals from wastewater.…”

Section: Technologies For Lead Removalmentioning

confidence: 99%

“…The forests were abundant natural resources of raw materials for adsorbents. The Schleichera oleosa bark had maximum adsorption capacity and maximum removal efficiency of 69.4 mg/g and 97%, respectively (Khatoon et al 2018 ). The mango peel waste removed 98.8% Pb 2+ with a maximum adsorption capacity of 99.1 mg/g (Iqbal et al 2009 ).…”

Section: Promising Low-cost Adsorbentsmentioning

confidence: 99%

Removal of lead ions (Pb2+) from water and wastewater: a review on the low-cost adsorbents

Chowdhury

Chowdhury²,

Mazumder³

et al. 2022

Appl Water Sci

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The presence of lead compounds in the environment is an issue. In particular, supply water consumption has been reported to be a significant source of human exposure to lead compounds, which can pose an elevated risk to humans. Due to its toxicity, the International Agency for Research on Cancer and the US Environmental Protection Agency (USEPA) have classified lead (Pb) and its compounds as probable human carcinogens. The European Community Directive and World Health Organization have set the maximum acceptable lead limits in tap water as 10 µg/L. The USEPA has a guideline value of 15 µg/L in drinking water. Removal of lead ions from water and wastewater is of great importance from regulatory and health perspectives. To date, several hundred publications have been reported on the removal of lead ions from an aqueous solution. This study reviewed the research findings on the low-cost removal of lead ions using different types of adsorbents. The research achievements to date and the limitations were investigated. Different types of adsorbents were compared with respect to adsorption capacity, removal performances, sorbent dose, optimum pH, temperature, initial concentration, and contact time. The best adsorbents and the scopes of improvements were identified. The adsorption capacity of natural materials, industrial byproducts, agricultural waste, forest waste, and biotechnology-based adsorbents were in the ranges of 0.8–333.3 mg/g, 2.5–524.0 mg/g, 0.7–2079 mg/g, 0.4–769.2 mg/g, and 7.6–526.0 mg/g, respectively. The removal efficiency for these adsorbents was in the range of 13.6–100%. Future research to improve these adsorbents might assist in developing low-cost adsorbents for mass-scale applications.

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Adsorptive remediation of Pb(II) from aqueous media using Schleichera oleosa bark

Cited by 39 publications

References 34 publications

Pb(Ⅱ) adsorption characteristics of magnetic GO-hydroxyapatite and the contribution of GO to enhance its acid resistance

Pb(Ⅱ) adsorption characteristics of magnetic GO-hydroxyapatite and the contribution of GO to enhance its acid resistance

Preparation and characterization of calcite for tannic acid adsorption: Optimization by response surface methodology coupled by Box-Cox transformation procedure

Removal of lead ions (Pb2+) from water and wastewater: a review on the low-cost adsorbents

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