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- Title
Breakthrough studies and mass transfer studies on the decolorization of paint industry wastewater using encapsulated beads of Cactus opuntia (ficus-indica).
- Authors
Vishalia, S.; Mullaib, P.; Karthikeyanc, R.
- Abstract
This article reports the performance of an encapsulated form of C. opuntia as an adsorbent for the decolorization of water-based paint industry wastewater in a fixed-bed column. Experimental results revealed that the performance is excellent under these conditions. The impact of operational variables viz., adsorbent bed height, effluent flow rate and effluent initial concentration, on the breakthrough curves was analyzed. Breakthrough curves were validated with the help of different models viz., Thomas/Bed depth service time, Adams–Bohart, Yoon–Nelson and Wang. To identify the rate limiting step of the process, various mass transfer models such as Weber–Morris, Boyd, Urano–Tachikawa, and Mathews-Weber were performed. From the model parameters, it was concluded that the intra particle diffusion was not the only rate controlling step but film diffusion was also a likely influencing factor. The results recommended that the green-based encapsulated adsorbent C. opuntia guaranteed its ability to act as an adsorbent in the decolorization of paint industry wastewaters.
- Subjects
MASS transfer; PAINT industry; OPUNTIA; OPUNTIA ficus-indica; CACTUS; EMULSION paint
- Publication
Desalination & Water Treatment, 2020, Vol 177, p89
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2020.24928