Abstract
References
- Slavik, I, Muller, S, Mokosch, R, Azongbilla, JA, Uhl, W. Impact of shear stress and pH changes on floc size and removal of dissolved organic matter (DOM). Water Res 46 (2012) 6543-6553.
- Nasser, MS. Characterization of floc size and effective floc density of industrial papermaking suspensions. Separation and Purification Technology 122 (2014) 495-505.
- Cao, B, Gao, B, Wang, M, Sun, X, Wang, J. Floc properties of polyaluminum ferric chloride in water treatment: The effect of Al/Fe molar ratio and basicity. J Colloid Interface Sci 458 (2015) 247-254.
- Franks, GV, Yates, PD, Lambert, NWA, Jameson, GJ. Aggregate size and density after shearing, implications for dewatering fine tailings with hydrocyclones. International Journal of Mineral Processing 77 (2005) 46-52.
- Wang, B, Shui, Y, He, M, Liu, P. Comparison of flocs characteristics using before and after composite coagulants under different coagulation mechanisms. Biochemical Engineering Journal 121 (2017) 107-117.
- Bridgeman, J, Jefferson, B, Parsons, S. Assessing floc strength using cfd to improve organics removal. Chemical Engineering Research and Design 86 (2008) 941-950.
- Yuan, Y, Farnood, RR. Strength and breakage of activated sludge flocs. Powder Technology 199 (2010) 111-119.
- Hermawan, M, Bushell, GC, Craig, VSJ, Teoh, WY, Amal, R. Floc strength characterization technique. An insight into silica aggregation. Langmuir 20 (2004) 6450-6457.
- Hall, T. Sonication for the study of floc strength and reflocculation of activated sludge. Environmental Technology Letters 2 (1981) 579-588.
- Sung, S-S, Ju, S-P, Hsu, C, Mujumdar, AS, Lee, D-J. Floc strength evaluation at alternative shearing with presence of natural organic matters. Drying Technology 26 (2008) 996- 1001.
- Wang, Y, Li, X, Wu, C, Zhao, Y, Gao, BY, Yue, Q. The role of sodium alginate in improving floc size and strength and the subsequent effects on ultrafiltration membrane fouling. Environ Technol 35 (2014) 10-17.
- Hogg, R. Flocculation and dewatering. International Journal of Mineral Processing 58 223-236.
- Spicer, PT, Pratsinis, SE. Shear-induced flocculation: The evolution of floc structure and the shape of the size distribution at steady state. Water Research 30 (1996) 1049-1056.
- Biggs, CA, Lant, PA. Activated sludge flocculation: On-line determination of floc size and the effect of shear. Water Research 34 (2000) 2542-2550.
Abstract
Flocculation is a widely used method for dewatering fine coal tailings. Flocs must resist to the shear stresses during the following processes such as flotation, cyclone separation, and pumping. Therefore, the strength of the flocs must be considered during flocculation. In this study, the fine coal tailings were dewatered with an anionic flocculant SNF-923 at various dosages, and the floc size of the coal tailings was characterized using a laser diffraction particle size analyzer with respect to time in order to determine the change in the floc size and hence the floc strength. The results of this study clearly indicated that the determination of the floc size with a laser particle size analyzer could be a simple and good method to observe the flocculation efficiency in terms of the floc strength.
Keywords
Coal tailings Flocculation Floc size Floc strength Laser diffraction particle size analyzer
References
- Slavik, I, Muller, S, Mokosch, R, Azongbilla, JA, Uhl, W. Impact of shear stress and pH changes on floc size and removal of dissolved organic matter (DOM). Water Res 46 (2012) 6543-6553.
- Nasser, MS. Characterization of floc size and effective floc density of industrial papermaking suspensions. Separation and Purification Technology 122 (2014) 495-505.
- Cao, B, Gao, B, Wang, M, Sun, X, Wang, J. Floc properties of polyaluminum ferric chloride in water treatment: The effect of Al/Fe molar ratio and basicity. J Colloid Interface Sci 458 (2015) 247-254.
- Franks, GV, Yates, PD, Lambert, NWA, Jameson, GJ. Aggregate size and density after shearing, implications for dewatering fine tailings with hydrocyclones. International Journal of Mineral Processing 77 (2005) 46-52.
- Wang, B, Shui, Y, He, M, Liu, P. Comparison of flocs characteristics using before and after composite coagulants under different coagulation mechanisms. Biochemical Engineering Journal 121 (2017) 107-117.
- Bridgeman, J, Jefferson, B, Parsons, S. Assessing floc strength using cfd to improve organics removal. Chemical Engineering Research and Design 86 (2008) 941-950.
- Yuan, Y, Farnood, RR. Strength and breakage of activated sludge flocs. Powder Technology 199 (2010) 111-119.
- Hermawan, M, Bushell, GC, Craig, VSJ, Teoh, WY, Amal, R. Floc strength characterization technique. An insight into silica aggregation. Langmuir 20 (2004) 6450-6457.
- Hall, T. Sonication for the study of floc strength and reflocculation of activated sludge. Environmental Technology Letters 2 (1981) 579-588.
- Sung, S-S, Ju, S-P, Hsu, C, Mujumdar, AS, Lee, D-J. Floc strength evaluation at alternative shearing with presence of natural organic matters. Drying Technology 26 (2008) 996- 1001.
- Wang, Y, Li, X, Wu, C, Zhao, Y, Gao, BY, Yue, Q. The role of sodium alginate in improving floc size and strength and the subsequent effects on ultrafiltration membrane fouling. Environ Technol 35 (2014) 10-17.
- Hogg, R. Flocculation and dewatering. International Journal of Mineral Processing 58 223-236.
- Spicer, PT, Pratsinis, SE. Shear-induced flocculation: The evolution of floc structure and the shape of the size distribution at steady state. Water Research 30 (1996) 1049-1056.
- Biggs, CA, Lant, PA. Activated sludge flocculation: On-line determination of floc size and the effect of shear. Water Research 34 (2000) 2542-2550.
Details
| Primary Language | English |
|---|---|
| Journal Section | Research Article |
| Authors | |
| Publication Date | September 30, 2018 |
| Published in Issue | Year 2018 Volume: 5 Issue: 3 |
Cited By
Review on solid-liquid separation using various conditioning methods
IOP Conference Series: Materials Science and Engineering
https://doi.org/10.1088/1757-899X/1166/1/012002
Hittite Journal of Science and Engineering is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY NC).