Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2023 Aug 23;18(8):e0290471.
doi: 10.1371/journal.pone.0290471. eCollection 2023.

Black carbon derived PET plastic bottle waste and rice straw for sorption of Acid Red 27 dye: Machine learning approaches, kinetics, isotherm and thermodynamic studies

Tapos Kumar Chakraborty  1 , Lamia Tammim  1 , Khandakar Rashedul Islam  1 , Md Simoon Nice  1 , Baytune Nahar Netema  1 , Md Sozibur Rahman  1 , Sujoy Sen  1 , Samina Zaman  1 , Gopal Chandra Ghosh  1 , Asadullah Munna  1 , Ahsan Habib  1 , Khadiza Tul-Coubra  1 , Himel Bosu  1 , Monishanker Halder  2 , Md Aliur Rahman  3
Affiliations

Black carbon derived PET plastic bottle waste and rice straw for sorption of Acid Red 27 dye: Machine learning approaches, kinetics, isotherm and thermodynamic studies

Tapos Kumar Chakraborty et al. PLoS One. .

Abstract

This study focuses on the probable use of PET waste black carbon (PETWBC) and rice straw black carbon (RSBC) as an adsorbent for Acid Red 27 (AR 27) adsorption. The prepared adsorbent is characterized by FE-SEM and FT-IR. Batch adsorption experiments were conducted with the influencing of different operational conditions namely time of contact (1-180 min), AR 27 concentration (5-70 mg/L), adsorbent dose (0.5-20 g/L), pH (2-10), and temperature (25-60°C). High coefficient value [PETWBC (R2 = 0.94), and RSBC (R2 = 0.97)] of process optimization model suggesting that this model was significant, where pH and adsorbent dose expressively stimulus removal efficiency including 99.88, and 99.89% for PETWBC, and RSBC at pH (2). Furthermore, the machine learning approaches (ANN and BB-RSM) revealed a good association between the tested and projected value. Pseudo-second-order was the well-suited kinetics, where Freundlich isotherm could explain better equilibrium adsorption data. Thermodynamic study shows AR 27 adsorption is favourable, endothermic, and spontaneous. Environmental friendliness properties are confirmed by desorption studies and satisfactory results also attain from real wastewater experiments. Finally, this study indicates that PETWBC and RSBC could be potential candidates for the adsorption of AR 27 from wastewater.

PubMed Disclaimer

Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1
(a) FT-IR spectra of adsorbent (PETWBC, and RSBC), and (b) pH of point zero charge.
Fig 2
Fig 2
Adsorption of AR 27 dye using graphene at diverse operational factors (a) contact time (b) pH; (c) initial dye concentration; (d) Adsorbent dose [adsorbent dose = 10 g/L; dye concentration = 20 mg/L; optimum pH = 2), Temperature = 25°C; equilibrium contact time = 150 min].
Fig 3
Fig 3
(a) Intraparticle diffusion plot, and (b) Effect of temperature for AR 27 dye adsorption using adsorbent (PETWBC, and RSBC).
Fig 4
Fig 4
BBD 2D and 3D response plots for AR 27 adsorption using PETWBC: (a, b) solution pH; (c, d) adsorbent dose, and (e, f) initial dye concentration].
Fig 5
Fig 5
BBD 2D and 3D response plots for AR 27 adsorption using RSBC: (a, b) solution pH; (c, d) adsorbent dose, and (e, f) initial dye concentration].
Fig 6
Fig 6
ANN network with topology for AR27 adsorption using adsorbent (a) PETWBC, and (b) RSBC.
Fig 7
Fig 7
Linear fit for experimental and predicted concentration for AR 27 adsorption using ANN for (a) PETWBC, and (b) RSBC.
Fig 8
Fig 8
(a) Desorption experiment, and (b) Real wastewater experiment for AR 27 adsorption.
See this image and copyright information in PMC

References

    1. Chakraborty T. K., Ghosh G. C., Akter M., Adhikary K., Islam M. S., Ghosh P., et al.. Biosorption of reactive red 120 Dye from aqueous solutions by using mahagoni (Swietenia mahagoni) wood and bark charcoal: equilibrium, and kinetic studies. Pollution. 2021. a; 7(4), 905–921. 10.22059/poll.2021.325135.1110. - DOI
    1. Yönten V., Sanyürek N. K., and Kivanç M. R. A thermodynamic and kinetic approach to adsorption of methyl orange from aqueous solution using a low cost activated carbon prepared from Vitis vinifera L. Surf. Interfaces. 2020; 20, 100529. 10.1016/j.surfin.2020.100529. - DOI
    1. Boumyaa W., Khnifiraa M., Machrouhia A., Abdennouria M., Achakb M., Qourzalc S., et al.. Box–Behnken design for understanding of adsorption behaviors of cationic and anionic dyes by activated carbon. Molecules. 2021; 15, 17–19. 10.5004/dwt.2021.26610. - DOI
    1. Demirhan E. Response surface methodology approach for adsorptive removal of Reactive Blue 19 onto green pea pod. Water Sci. Technol. 2020; 81(6), 1137–1147. doi: 10.2166/wst.2020.199 - DOI - PubMed
    1. Chakraborty T. K., Islam M. S., Ghosh G. C., Ghosh P., Zaman S., Hossain M. R., et al.. Receptor model-based sources and risks appraisal of potentially toxic elements in the urban soils of Bangladesh. Toxicol. Rep. 2023. a; 10, 308–319. doi: 10.1016/j.toxrep.2023.02.011 - DOI - PMC - PubMed