<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The present work was aimed to evaluate the optimum mass of crab shell biochar and adsorption contact time in a two-stage adsorber design for malachite green. The model was developed to predict optimum adsorbent mass and adsorption profiles at specified volumes and concentrations of dye effluent. Results show that the adsorbent mass can only be reduced by 1.91 % because of the adsorbent’s strong affinity towards malachite green. Accordingly, the adsorption contact time to achieve equilibrium has dramatically reduced from 150 min to 31 min. In the performance evaluation, the adsorbent mass in stage-1 is always higher than that in stage-2 to subside the adsorbent load in achieving the target removal at optimum dosage. From the response surface methodology, the most significant parameters in two-stage adsorber design are adsorption time at stage-2 and malachite green concentration. The predicted values of adsorbent mass and time are essential in designing the cost-competitive two-stage adsorption process for industrial wastewater treatment.</p>
</abstract>

The present work was aimed to evaluate the optimum mass of crab shell biochar and adsorption contact time in a two-stage adsorber design for malachite green. The model was developed to predict optimum adsorbent mass and adsorption profiles at specified volumes and concentrations of dye effluent. Results show that the adsorbent mass can only be reduced by 1.91 % because of the adsorbent’s strong affinity towards malachite green. Accordingly, the adsorption contact time to achieve equilibrium has dramatically reduced from 150 min to 31 min. In the performance evaluation, the adsorbent mass in stage-1 is always higher than that in stage-2 to subside the adsorbent load in achieving the target removal at optimum dosage. From the response surface methodology, the most significant parameters in two-stage adsorber design are adsorption time at stage-2 and malachite green concentration. The predicted values of adsorbent mass and time are essential in designing the cost-competitive two-stage adsorption process for industrial wastewater treatment.

Malachite green adsorption by calcium-rich crab shell char via two-stage adsorber design

Ovidius University Annals of Chemistry

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The present work was aimed to evaluate the optimum mass of crab shell biochar and adsorption contact time in a two-stage adsorber design for malachite green....

Malachite green adsorption by calcium-rich crab shell char via two-stage adsorber design

Publié en ligne: 13 avr. 2022

Pages: 36 - 40

Reçu: 17 févr. 2022

Accepté: 02 avr. 2022

DOI: https://doi.org/10.2478/auoc-2022-0005

Mots clés
crab shell char, malachite green, two-stage adsorber, mass optimization, performance evaluation

© 2022 Tivya Sarawanan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Malachite green adsorption by calcium-rich crab shell char via two-stage adsorber design

Publié en ligne: 13 avr. 2022

Pages: 36 - 40

Reçu: 17 févr. 2022

Accepté: 02 avr. 2022

DOI: https://doi.org/10.2478/auoc-2022-0005

Mots cléscrab shell char, malachite green, two-stage adsorber, mass optimization, performance evaluation

© 2022 Tivya Sarawanan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
crab shell char, malachite green, two-stage adsorber, mass optimization, performance evaluation