Improved separation of bacteria with a dual flocculant hydrocol? system |
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| Authors: | J Hughes D K Ramsden K C Symes P J Williams |
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| Institution: | (1) Department of Chemical and Physical Sciences, Huddersfield Polytechnic, Queensgate, HD1 3DH Huddersfield, West Yorkshire, UK;(2) Allied Colloids Ltd., Low Moor, BD12 OJZ Bradford, West Yorkshire, UK |
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| Abstract: | Summary Polyelectrolyte flocculants are inefficient at flocculating Z. mobilis and B. subtilis in a complex medium, when administered singly or when combined with an oppositely charged polymer. However, when polymer dosing is followed by bentonite addition, particularly when chitosan constitutes the soluble polymer, effective flocculation occurs. High broth clarities can be attributed to chitosan interaction with cells, extracellular polymer and bentonite. |
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