Effective removal of reactive and direct dyes from colored wastewater using low-cost novel bentonite nanocomposites
The present study was aimed to remove direct violet-51, reactive green-5, reactive red, and acid red dyes by novel bentonite clay nanocomposites prepared using sodium metasilicate and potassium ferricyanide. The effect of temperature, pH, adsorbent amount, contact time, and initial concentration wer...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Published: |
MDPI
2022
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/101074/ |
| _version_ | 1848863487036489728 |
|---|---|
| author | Chauhdary, Yusra Hanif, Muhammad Asif Rashid, Umer Ahmad Bhatti, Ijaz Anwar, Hafeez Jamil, Yasir A. Alharth, Fahad Ahmed Kazerooni, Elham |
| author_facet | Chauhdary, Yusra Hanif, Muhammad Asif Rashid, Umer Ahmad Bhatti, Ijaz Anwar, Hafeez Jamil, Yasir A. Alharth, Fahad Ahmed Kazerooni, Elham |
| author_sort | Chauhdary, Yusra |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The present study was aimed to remove direct violet-51, reactive green-5, reactive red, and acid red dyes by novel bentonite clay nanocomposites prepared using sodium metasilicate and potassium ferricyanide. The effect of temperature, pH, adsorbent amount, contact time, and initial concentration were studied to optimize the removal process. Various adsorption isotherms (Temkin, Freundlich isotherm, Langmuir isotherm, Harkin Jura, and Dubinin Radushkevich models) and kinetic models (pseudo-first order and pseudo-second order) were applied to adsorption data to find out the best fit model, i.e., Freundlich isotherm and pseudo-second order model. The prepared samples of bentonite nanocomposites were characterized using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Bentonite treated with sodium metasilicate and potassium ferricyanide removed 96.6% of direct violet-51 dye, bentonite treated with sodium metasilicate removed 95%, bentonite treated with potassium ferricyanide removed 94%, and pure bentonite removed 80% of the dye from the solution. |
| first_indexed | 2025-11-15T13:33:42Z |
| format | Article |
| id | upm-101074 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T13:33:42Z |
| publishDate | 2022 |
| publisher | MDPI |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1010742023-06-19T03:53:20Z http://psasir.upm.edu.my/id/eprint/101074/ Effective removal of reactive and direct dyes from colored wastewater using low-cost novel bentonite nanocomposites Chauhdary, Yusra Hanif, Muhammad Asif Rashid, Umer Ahmad Bhatti, Ijaz Anwar, Hafeez Jamil, Yasir A. Alharth, Fahad Ahmed Kazerooni, Elham The present study was aimed to remove direct violet-51, reactive green-5, reactive red, and acid red dyes by novel bentonite clay nanocomposites prepared using sodium metasilicate and potassium ferricyanide. The effect of temperature, pH, adsorbent amount, contact time, and initial concentration were studied to optimize the removal process. Various adsorption isotherms (Temkin, Freundlich isotherm, Langmuir isotherm, Harkin Jura, and Dubinin Radushkevich models) and kinetic models (pseudo-first order and pseudo-second order) were applied to adsorption data to find out the best fit model, i.e., Freundlich isotherm and pseudo-second order model. The prepared samples of bentonite nanocomposites were characterized using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Bentonite treated with sodium metasilicate and potassium ferricyanide removed 96.6% of direct violet-51 dye, bentonite treated with sodium metasilicate removed 95%, bentonite treated with potassium ferricyanide removed 94%, and pure bentonite removed 80% of the dye from the solution. MDPI 2022-11-08 Article PeerReviewed Chauhdary, Yusra and Hanif, Muhammad Asif and Rashid, Umer and Ahmad Bhatti, Ijaz and Anwar, Hafeez and Jamil, Yasir and A. Alharth, Fahad and Ahmed Kazerooni, Elham (2022) Effective removal of reactive and direct dyes from colored wastewater using low-cost novel bentonite nanocomposites. Water, 14 (22). art. no. 3604. pp. 1-20. ISSN 2073-4441 https://www.mdpi.com/2073-4441/14/22/3604#:~:text=Bentonite%20has%20been%20used%20in,cation%20exchange%20capacity%20%5B12%5D. 10.3390/w14223604 |
| spellingShingle | Chauhdary, Yusra Hanif, Muhammad Asif Rashid, Umer Ahmad Bhatti, Ijaz Anwar, Hafeez Jamil, Yasir A. Alharth, Fahad Ahmed Kazerooni, Elham Effective removal of reactive and direct dyes from colored wastewater using low-cost novel bentonite nanocomposites |
| title | Effective removal of reactive and direct dyes from colored wastewater using low-cost novel bentonite nanocomposites |
| title_full | Effective removal of reactive and direct dyes from colored wastewater using low-cost novel bentonite nanocomposites |
| title_fullStr | Effective removal of reactive and direct dyes from colored wastewater using low-cost novel bentonite nanocomposites |
| title_full_unstemmed | Effective removal of reactive and direct dyes from colored wastewater using low-cost novel bentonite nanocomposites |
| title_short | Effective removal of reactive and direct dyes from colored wastewater using low-cost novel bentonite nanocomposites |
| title_sort | effective removal of reactive and direct dyes from colored wastewater using low-cost novel bentonite nanocomposites |
| url | http://psasir.upm.edu.my/id/eprint/101074/ http://psasir.upm.edu.my/id/eprint/101074/ http://psasir.upm.edu.my/id/eprint/101074/ |