Film pore diffusion modeling and contact time optimization for adsorption of distillery spentwash on fly ash. Issue 52 (7th November 2016)

• Record Type: Journal Article
• Authors: Aravind, D.; Krishna Prasad, R.
• Is Part Of: Desalination and water treatment. Volume 57:Issue 52(2016)
• Page Start: 24925
• Page End: 24933
• Publication Date: 2016-11-07
• Subjects: Distillery spentwash -- Fly ash -- Film pore diffusion model -- Adsorption -- Contact time optimization; Saline water conversion -- Periodicals; Saline water conversion; Water -- Purification; Periodicals; 628.167
• DOI: 10.1080/19443994.2016.1143878
• Languages: English
• ISSNs: 1944-3994

Abstract

Abstract: The contact time in two batch adsorbers were optimized using unreacted shrinking core model for the adsorption of biopolymeric pigments in distillery spentwash by fly ash adsorbent. The total optimal contact time obtained was 40 min for 3 m 3 adsorbate volume having initial biopolymer concentration of 1.5 mg/dm 3 . The film pore diffusion model was used to determine the external mass transfer coefficient, effective diffusion coefficient, and bed capacity for continuous adsorption process. The adsorbent bed capacities at different initial biopolymeric concentrations (2, 000, 5, 500, 8, 700, and 12, 500 mg/ml) are 69.26, 114.41, 143.64, and 172 mg/g, respectively. The effective diffusion coefficients at various bed heights were determined for continuous adsorption process.