Adsorption performances of branched aminated waste polyacrylonitrile fibers: experimental versus modelling study

Pantić, Krstimir; Bajić, Zoran; Veličković, Zlate; Djokić, Veljko; Rušmirović, Jelena; Marinković, Aleksandar D.; Perić-Grujić, Aleksandra A.

doi:10.5004/dwt.2019.24758

Cited by 8 publications

(8 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The maximum deviation is <3%, which is an experimental error. Standard errors for isothermal, kinetic, and thermodynamic parameters were determined using the commercial software Microcal Origin 8.0 (Pantić et al, 2019).…”

Section: Statistical Analysis Of the Experimental Datamentioning

confidence: 99%

“…In order to confirm the adsorption model that best corresponds to the experimental data, they were analyzed by the ANOVA variance analysis, using the F value together with the values of the correlation coefficient (R) from the regression analysis. (Pantić et al, 2019;Bajić et al, 2019)…”

Section: Statistical Analysis Of the Experimental Datamentioning

confidence: 99%

“…However, it is difficult to predict optimal reaction conditions based on such results due to possible interactions between different independent variables involved in adsorption reactions. (Pantić et al, 2019;Bajić et al, 2019) Recently, various statistical programs have been used that are useful to help establish the design of the experiment. Using response surface methodology (RSM) as a mathematical function, it is possible to examine the individual and interactive influences of different variables in relation to different predictors.…”

Section: Optimization Of the Experimental Adsorption Conditionsmentioning

confidence: 99%

“…In that way, we get the optimal conditions that are needed to get the best results. (Pantić et al, 2019) In addition, it has been proven that the central composition design (CCD) and the Bok-Behnken design (BBD) are efficient designs of RSM models in optimizing the adsorption process. (Pantić et al, 2019) In this study, the synthesized modified adsorbent RMHAp was used to remove malathion from water.…”

Section: Optimization Of the Experimental Adsorption Conditionsmentioning

confidence: 99%

“…Therefore, the attention of researchers is increasingly focused on finding a cheap, environmentally friendly, and highly efficient adsorbent to solve this problem. Various adsorbents such as agricultural by-products, waste materials, cheap minerals and biomass have been used to remove various pollutants from wastewater (Chatterjee et al, 2010;Pantić et al, 2019;Bajić et al, 2013;Stevanović et al, 2020;Karanac et al, 2018;Perendija et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Pulverized river shellfish shells as a 904 cheap adsorbent for removing of malathion from water: Examination of the isotherms, kinetics, thermodynamics and optimization of the experimental conditions by the response surface method

Veličković¹,

Vujičić²,

Stojanović³

et al. 2021

Vojnotehnički glasnik

View full text Add to dashboard Cite

Introduction/purpose: In this study, we investigated the possibility of removing the organophosphorus pesticide malathion from water using a new adsorbent based on the biowaste of river shell shards from the Anodonta Sinadonta woodiane family, a material that accumulates in large quantities as waste on the banks of large rivers. Two adsorbents were tested - mechanically comminuted river shells (MRM) and mechanosynthetic hydroxyapatite from comminuted river shells (RMHAp). Methods: The obtained adsorbents were characterized and tested for the removal of the organophosphorus pesticide malathion from water. In order to predict the optimal adsorption conditions using the Response Surface Method (RSM), the authors investigated the influence of variable factors (adsorption conditions), pH values, adsorbent doses, contact times, and temperatures on the adsorbent capacity. Results: The best adsorption of malathion was achieved at mean pH values between 6.0 and 7.0. The adsorption data for malathion at 25, 35, and 45 °C were compared using the Langmuir, Freundlich, DubininRadushkevich (DR), and Temkin isothermal models, as well as pseudofirst order, pseudo-second order and Elovic kinetic models for modeling adsorption kinetics. The maximum Langmuir adsorption capacity for MRM and RMHAp at 25 °C was 46,462 mg g-1 and 78,311 mg g-1 , respectively. Conclusion: The results have showed that malathion adsorption on both adsorbents follows the pseudo-second kinetic model and the Freundlich isothermal model. The thermodynamic parameters indicate the endothermic, feasible, and spontaneous nature of the adsorption process.

show abstract

Section: Statistical Analysis Of the Experimental Datamentioning

confidence: 99%

Section: Statistical Analysis Of the Experimental Datamentioning

confidence: 99%

Section: Optimization Of the Experimental Adsorption Conditionsmentioning

confidence: 99%

Section: Optimization Of the Experimental Adsorption Conditionsmentioning

confidence: 99%