Continuous Phenol Removal Using a Liquid–Solid Circulating Fluidized Bed

Nandhini Sureshkumar, Samiha Bhat, Shwetha Srinivasan, Nirmala Gnanasundaram, Murugesan Thanapalan, Rambabu Krishnamoorthy, Hatem Abuhimd, Faheem Ahmed and Pau Loke Show
Additional contact information
Nandhini Sureshkumar: Mass Transfer Lab, School of Chemical Engineering, Vellore Institute of Technology, Vellore 632014, India
Samiha Bhat: Mass Transfer Lab, School of Chemical Engineering, Vellore Institute of Technology, Vellore 632014, India
Shwetha Srinivasan: Mass Transfer Lab, School of Chemical Engineering, Vellore Institute of Technology, Vellore 632014, India
Nirmala Gnanasundaram: Mass Transfer Lab, School of Chemical Engineering, Vellore Institute of Technology, Vellore 632014, India
Murugesan Thanapalan: Department of Chemical Engineering, Universiti Tecknologi Petronas, Perak 32610, Malaysia
Rambabu Krishnamoorthy: Department of Chemical Engineering, Khalifa University, Abu Dhabi 127788, UAE
Hatem Abuhimd: National Center for Nanotechnology and Semiconductor, King Abdulaziz City for Science and Technology, Riyadh 11564, Saudi Arabia
Faheem Ahmed: Department of Physics, College of Science, King Faisal University, P.O. Box-400, Al-Ahsa 31982, Saudi Arabia
Pau Loke Show: Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Selangor 43500, Malaysia

Energies, 2020, vol. 13, issue 15, 1-18

Abstract: A liquid-solid circulating fluidized bed (LSCFB) helps to overcome the shortcomings of conventional fluidized beds by using a particle separation and return system as an integral part of the overall reactor configuration. Batch adsorption experiments were carried out for the removal of phenol from a synthetically prepared solution using fresh activated-carbon-coated glass beads. The morphological features and surface chemistry of the adsorbent were analyzed via SEM and FTIR techniques. The adsorbent dosage, contact time and temperature were varied along with solution pH to assess their effects on the adsorbent performance for phenol removal. Isotherm modeling showed that the phenol removal using the activated-carbon glass beads followed the Langmuir model. Effectively, it was observed at an adsorbent loading of 2.5 g/150 mL of feed volume and a contact time of 3 h produced an 80% efficiency in the batch study. Furthermore, on scaling it up to the column, the desired 98% phenol-removal efficiency was obtained with an adsorbent dosage of 250 g and contact time of 25 min. Adsorbent regeneration using 5% ( v / v ) ethanol showed a 64% desorption of phenol from the sorbent within 20 min in the LSCFB.

Keywords: circulating fluidized bed; adsorption; activated carbon; phenol; glass beads (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/15/3839/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/15/3839/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:15:p:3839-:d:390367

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().