Determination of adsorption operating conditions in dynamic mode on basis of batch study: Application for Dimethylphthalate elimination on activated carbon prepared from Arundo donax

Nassim, Doufene; Berrama, Tarek; Nekaa, C.; Dadou, Salima

doi:10.1080/00986445.2018.1542301

Cited by 7 publications

(4 citation statements)

References 78 publications

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“…Thus, it can be concluded that surface of biochar's is positively charged at pH lower than pHZPC and favors adsorption of DMP. These confirms the above-mentioned findings of the study and also have good agreement with the earlier studies (Ahmadi et al, 2016;Doufene et al, 2019).…”

Section: Effect Of Ph On Dmp Removalsupporting

confidence: 94%

“…The coefficients of determination (R 2 ) for Freundlich isotherm were higher than those of the Langmuir model, signifying that DMP adsorption by both biochar's and CAC was multilayered in nature. Now, this interaction was largely attributed by the π-π stacking effects of short carbon chain PAEs (i.e., DMP) and the biochar surfaces Doufene et al, 2019;Ye et al, 2021). In addition, values of Freundlich model constant (KF) followed the order of CAC > BC650 > BC550 > BC450.…”

Section: Adsorption Isotherm Studiesmentioning

confidence: 99%

“…In addition, values of Freundlich model constant (KF) followed the order of CAC > BC650 > BC550 > BC450. Thus, the larger KF value indicates the higher qe and promotes spontaneous adsorption of DMPs (Ahmadi et al, 2016;Doufene et al, 2019).…”

Section: Adsorption Isotherm Studiesmentioning

confidence: 99%

“…Similarly, at acidic conditions the medium has more H + ions and the surface of the adsorbent will get protonated. And it will facilitate adsorption between positively charged adsorbent surface and DMP molecules having negatively charged phenolic groups on the surface (Doufene et al, 2019;Julinová & Slavík, 2012) From the pHZPC analysis, it was found that for the synthesized biochar's the pHZPC was in the range of 3.9-4.2 and for CAC it was 6.4 (Figure 12). The pH at which adsorbent's net surface charge is zero is designated as pHZPC.…”

Section: Effect Of Ph On Dmp Removalmentioning

confidence: 99%

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Adsorptive Removal of Dimethyl Phthalate Using Peanut Shell Derived Biochar from Aqueous Solutions: Equilibrium, Kinetics and Mechanistic Studies.

Ghosh

Sahu

2023

Preprint

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Rise in polymer industry and extensive use of their products leads to leaching of phthalate esters and distributed into the different matrices of the environment. These chemical group has the potential to hamper the life of living organisms and ecosystem. Thus, it is essential to develop cost effective adsorbents capable of removing these harmful compounds from the environment. In this work, peanut hull derived biochar was taken as the adsorbent, and DMP was selected as the model pollutant or adsorbates. The biochar’s of different properties were produced at three pyrolysis temperature (i.e., 450,550, and 650°C) to check how temperature affected the adsorbent properties and adsorption performance. Consequently, performance of biochar’s for DMP adsorption were thoroughly studied by the combination of experiments and compared with commercial activated carbon (CAC). All the adsorbents are meticulously characterized using various analytical techniques and used for adsorption DMP from aqueous solutions. The results suggested that adsorption was favoring chemisorption with multi-layered adsorption as adsorption kinetics and isotherm are in good alignment with pseudo second order kinetics and Freundlich isotherm, respectively. Further, thermodynamic study revealed DMP adsorption on adsorbent is physically spontaneous and endothermic. The removal efficiency order of four adsorbent was as follows: BC650 > CAC > BC550 > BC450 with maximum efficiency of 98.8% for BC650 followed by 98.6% for CAC at optimum conditions. And, as it’s a short carbon chain PAE, dominant mechanisms of adsorption for DMP onto porous biochar were H-bonding, π-π EDA interactions, and diffusion within the pore spaces. Therefore, this study can provide strategies for the synthesis of biochar for effectively removing DMP from aqueous solution.

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Section: Effect Of Ph On Dmp Removalsupporting

confidence: 94%

Section: Adsorption Isotherm Studiesmentioning

confidence: 99%

Section: Adsorption Isotherm Studiesmentioning

confidence: 99%

Section: Effect Of Ph On Dmp Removalmentioning

confidence: 99%

See 2 more Smart Citations