Optimization of coagulation-flocculation process for treatment of a colloidal suspension containing dolomite/clay/borax

Date

2017-02-10

Author

ÇIRAK, MUSTAFA
Hoşten, Çetin

Metadata

Show full item record

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

Item Usage Stats

169
views

0
downloads

This study statistically investigated the turbidity removal of a dolomite/clay/borax-containing colloidal suspension that had a high degree of stability. During the destabilization experiments, the mixing intensity, the dosage of the coagulant and the flocculant was tested at fixed pH 9.40 due to the buffering property of dissolved borax. Then, the performance of the coagulation/flocculation process was evaluated with Response Surface Methodology (RSM) by using Box-Behnken Design. For the collected experimental data set, the different models were formed. However, the logarithmically transformed model (R-2: 99.75%; Adj-R-2: 99.30%) was selected as the most capable one for the physicochemical process. By using this enhanced statistical model, the optimum turbidity removal was acquired with the help of the design variables as follows: the mixing intensity of 265.138 s(-1), calcium chloride dosage of 305.585 mg/L and the flocculant dosage of 218.619 g/ton-solid. Based on this result, it can be concluded that the treatment of the tailings of borax concentrators can be feasible if the physical and the chemical parameters of the solid/liquid separation process are properly implemented all together.

Subject Keywords

Borax, Tailings, Coagulation, Flocculation, RSM, Optimization

URI

https://hdl.handle.net/11511/57303

Journal

INTERNATIONAL JOURNAL OF MINERAL PROCESSING

DOI

https://doi.org/10.1016/j.minpro.2016.12.007

Collections

Department of Mining Engineering, Article

Suggestions

OpenMETU
Core

Comparative study on sediment transport equations for delta formations in reservoirs Pulcuoğlu, Başar; Tiğrek, Şahnaz; Department of Civil Engineering (2009) In this study, a qualitative and comparative investigation on sediment transport equations used in prediction of rserevoir sedimentation is presented. 32 sediment transport equations, which are selected by literature review on sand and gravel size ranges, grouped according to the median particle sizes on which their derivation based. In order to compare these equations computer program DELTA, which is a one dimensional simulation program developed by Graf and Altınakar (1998) for the prediction of delta for...
Evaluation of high hydrostatic pressure effects on bovine red blood cells and platelets Ceylan, Cagatay; Severcan, Mete; Bozoglu, Faruk; Severcan, Feride (Informa UK Limited, 2009-01-01) The objective of this study was to investigate the effects of high hydrostatic pressure (HHP) on the stability of red blood cells (RBCs) and platelets. Bovine blood cells (n=5) were treated with the pressure of 55, 110, 154 and 220MPa at 25C for 5min. Light microscopy, atomic force microscopy and flow cytometry studies revealed that RBCs were morphologically stable up until the 220MPa pressure treatments, at which surface modifications were observed. The platelets were found to be less stable than RBCs. HHP...
Experimental investigation of residual stresses introduced via shot peening and their effect on fatigue life of ball bearings Küçükyılmaz, Ali; Gür, Cemil Hakan; Department of Metallurgical and Materials Engineering (2010) In this study, residual stresses introduced via application of shot peening on the raceways of bearing rings and their effect on the fatigue life was investigated experimentally. For improvement of residual compressive stress state, shot peening operation with different parameters was utilized. Residual stress measurements were conducted via X-ray diffraction technique. Optimization of residual stress state during the production of ball bearings is the main target of this study. Process parameters for shot ...
Investigation of bioprocess parameters for glucose isomerase production by Bacillus thermoantarcticus Haykır, Işık; Çalık, Pınar; Department of Chemical Engineering (2007) In this study, the effects of bioprocess parameters on glucose isomerase roduction by Bacillus thermoantarcticus (DSMZ 9572) were investigated. For his purpose, firstly, in laboratory scale shake-bioreactors, a defined medium was designed in terms of its carbon and nitrogen sources, to achieve the highest glucose isomerase activity. Optimum concentrations of medium components were determined by a statistical approach, namely Response Surface Methodology (RSM). RSM defined the relationship between the respon...
Effect of high hydrostatic pressure processing and squeezing pressure on some quality properties of pomegranate juice against thermal treatment Subasi, B. G.; Alpas, Hami (2017-03-01) The aim of this study was to investigate the effect of high hydrostatic pressure (HHP) treatment (200, 300, 400MPa; 5 degrees C, 15 degrees C and 25 degrees C; 5 and 10 min) on some quality properties of pomegranate juice. Juice samples are obtained under industrial conditions at two different squeezing pressure levels (100 and 150psi - 0.689 and 1.033MPa, respectively). Results are compared against conventional thermal treatment (85 degrees C/10 min) and raw sample. For all three processing temperature, HH...

Citation Formats

M. ÇIRAK and Ç. Hoşten, “Optimization of coagulation-flocculation process for treatment of a colloidal suspension containing dolomite/clay/borax,” INTERNATIONAL JOURNAL OF MINERAL PROCESSING, pp. 30–41, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57303.