The effect of polyacrylamide charge density and molecular weight on the flocculation and sedimentation behaviour of kaolinite suspensions

Van Olphen, 1963 Michals, 1962, Settling rate and sediementation voulmes of flocculated kaolin suspensions, Ind. Eng. Chem. Fund., 1, 24, 10.1021/i160001a004 Nabzar, 1984, Polyacrylamide–sodium kaolinite interaction: flocculation behaviour of polymer clay suspensions, J. Colloid Interface Sci., 102, 380, 10.1016/0021-9797(84)90240-6 Nabzar, 1985, An experimental study of kaolinite cystal edge–polyacrylamide interaction in dilute suspensions, J. Colloid Interface Sci., 108, 243, 10.1016/0021-9797(85)90257-7 Nabzar, 1988, Stabilty of polymer–clay suspensions. The polyacrylamide–sodium kaolinite systems, Colloids Surf., 30, 345, 10.1016/0166-6622(88)80217-8 Ray, 1987, Agglomerate breakage in polymer-flocculated suspensions, J. Colloid Interface Sci., 116, 256, 10.1016/0021-9797(87)90119-6 Lee, 1991, Adsorption of polyacrylamides on the different faces of kaolinites, J. Colloid Interface Sci., 147, 351, 10.1016/0021-9797(91)90167-7 Gregory, 1985, The use of polymeric flocculants, 253 Peares, 1980, Chemical treatments for thickening and filtration, Filtr. Sep., 17, 460 Patience, 2003, Investigation of the effect of polymer type on flocculation, rheology and dewatering behaviour of kaolinite dispersions, Int. J. Miner. Process., 71, 247, 10.1016/S0301-7516(03)00062-0 Richardson, 1988, Industrial coagulant and flocculants. Reagents in mineral technology, Surfact. Sci. Ser., 27, 519 Scheiner, 1987, Applied flocculation efficiency: a comparison of polyethylene oxide and polyacrylamides, Flocculation Biotechnol. Sep. Syst., 4, 175 Hogg, 2000, Flocculation and dewatering, Int. J. Miner. Process., 58, 223, 10.1016/S0301-7516(99)00023-X Somasundaran, 1988, vol. 27 Richardson, 1954, Sedimentation and fluidization. Part I, Trans. Inst. Chem. Eng., 32, 35 Buscall, 1998, The continuous-flow gravity thickeners: steady state behaviour, AIChE J, 34, 239 Buscall, 1994, Solid/liquid separation of flocculated suspensions, Adv. Colloidal Interface Sci., 51, 175, 10.1016/0001-8686(94)80036-7 Franks, 1996, Plastic-to-brittle transition of saturated, alumina powder compacts, J. Am. Ceram. Soc., 79, 3161, 10.1111/j.1151-2916.1996.tb08091.x Colic, 1997, Effect of counterion size on short range repulsive forces at high ionic strengths, Langmuir, 13, 3125, 10.1021/la960965p De Kretser, 2003, Compressive rheology: an overview, rheology reviews, Br. Soc. Rheol., 125 Tiller, 1983, The theory of sediment volumes of compressible, particulate structures, J. Colloid Interface Sci., 100, 56 Miller, 1995, Compressive yield stress of cement paste, Mater. Res. Soc., 41, 285 De Kretser, 1997, Improving clay-based tailings disposal: case study on coal tailings, AIChE J, 43, 1894, 10.1002/aic.690430724 Channell, 1997, Shear and compressive rheology of aggregated alumina suspension, AIChE J, 43, 1700, 10.1002/aic.690430707 Williams, 1977, Electrophoresis and zeta potential of kaolinite, J. Colloidal Interface Sci., 65, 79, 10.1016/0021-9797(78)90260-6 Chen, 1998, Effects of surface charge and shear during orthokinetic flocculation on the adsorption and sedimentation of kaolin suspensions in polyelectrolyte solutions, Sep. Sci. Technol., 33, 569, 10.1080/01496399808544997 M.S. Nasser, A.E. James, Settling and sediment bed behaviour of kaolinite in aqueous media, Sep. Purif. Technol., (2006), in press.