A WASHING THEORY FOR UNSATURATED FILTER CAKES USING THE CAPILLARY MODEL

Date

1987-11

Author

BATIGüN, AYSEGüL
Tosun, İsmail

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

192
views

0
downloads

A rigorous washing theory is developed using the area averaging technique for unsaturated filter cakes. Limiting cases of the resulting equations are investigated. The assumptions used in the modelling are verified. The mass transfer parameters, which are evaluated by the application of the moment analysis, are shown to be directly proportional with the volumetric flow rate of the wash liquor. Experimental results also indicate that, for a given wash liquor volumetric flow rate, the increase in the cake thickness causes an increase in the mass transfer parameters. It should be noted that the proposed model is applicable for large particle sizes. As particle size becomes finer and the size distribution becomes wider, the model should be modified by including dead void spaces containing pockets of the mother liquor in the filter cake

Subject Keywords

General Chemistry, General Chemical Engineering, Cake washing, Area averaging

URI

https://hdl.handle.net/11511/52059

Journal

Chemical Engineering Communications

DOI

https://doi.org/10.1080/00986448708912032

Collections

Department of Chemical Engineering, Article

Suggestions

OpenMETU
Core

Analysis of the electrofiltration mechanism based on multiphase filtration theory Genc, A; Tosun, I (Informa UK Limited, 2004-01-01) A mathematical model based on multiphase filtration theory is developed to describe the electrofiltration process. The model takes both electrophoretic and electroosmotic effects into account. The electrophoretic migration velocity of solid particles is predicted from the model using the filtrate volume time data obtained from electrofiltration experiments.
A novel synthesis of optically active alpha-amino acids Demir, Ayhan Sıtkı (Walter de Gruyter GmbH, 1997-01-01) A new enantioselective synthesis of alpha- amino acids are described in which the key step is the enantioselective reduction of E, and Z furyl ketone oxime ethers with chiral boron complexes. The chirality of amino acid is fully controlled by appropriate choice of geometrical isomer of the oxime ether.
A Pulse Voltage Application in Electrochemical Reduction of Solid CaWO4 Powder Goksu, Orhan Gokce; ERDOĞAN, METEHAN; Karakaya, İshak (The Electrochemical Society, 2016-09-01) Scheelite is the most abundant mineral of tungsten, but wolframite is used more than scheelite due to easier dissolution in alkaline solutions used in present processing methods. An alternative method based on electrochemical reduction of CaWO4 by direct current applications in molten salt solutions was recently reported. Pulse voltage and constant voltage reduction mechanisms were compared and an optimization of reduction kinetics was achieved in this study. The results have shown that faster reduction rat...
Study of adsorption characteristics of long chain alkyl amine and petroleum sulfonate on silicates by electrokinetic potential, microflotation, FTIR, and AFM analyses ÖZÜN, Savaş; Atalay, M. Umit; Demirci, Şahinde (Informa UK Limited, 2019-05-19) The long-chain alkyl amines and petroleum sulfonates are mostly used to remove unwanted minerals from feldspar ores in acidic pHs. In this study, their adsorption characteristics on pure albite and quartz were investigated by electrokinetic potential measurements, microflotation tests, Fourier transform infrared spectroscopy, and atomic force microscopy studies. According to the results, amine had strong influence on zeta potentials of both albite and quartz turning them positive and resulting over 90% flot...
A GRAIN MODEL FOR CATALYST TORTUOSITY Doğu, Timur (Informa UK Limited, 1991-01-01) A simple model was proposed for the prediction of tortuosity factor of porous solids with mono or bidispersed pore size distributions. Model predictions were presented in graphical form for quick estimation of tortuosity. The experimental tortuosity factors reported in the literature for porous solids of different pore structures and the corresponding predicted values showed good agreement.

Citation Formats

A. BATIGüN and İ. Tosun, “A WASHING THEORY FOR UNSATURATED FILTER CAKES USING THE CAPILLARY MODEL,” Chemical Engineering Communications, pp. 89–105, 1987, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/52059.