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Table 4 Zeta potential values for biomass, control adsorbents and polymeric beads

From: Surface energetics to assess influence of biomass-type and biomass–adsorbent interactions in expanded beds

  Zeta potential mV
Binding condition Elution condition
Biomass
 E. coli1 − 29 − 23
 B. subtilis2 − 40 − 24
 S. cerevisiae3 − 20 − 11
 CHO1 − 18 − 11
Control
 Sepharose Q 27 13
 Sepharose DEAE 19 10
 Sepharose SP − 23 − 12
 Sepharose phenyl − 2 − 1
Polymeric material
 Alginate − 21 − 14
 Agar − 26 − 16
 Cellulose − 5 − 2
 Sepharose 4B − 2 0
 Fastline agarose − 7 − 3
 Sephacryl S 400 − 1 − 1
 Carrageenan − 26 − 14
 Dextran (PD 10) 0 1
 Polyacrylamide − 2 2
 Polyvinylpyrrolidone − 1 0
 Phenolic beads − 29 − 17
 Supelite™ DAX-8 − 8 − 3
 Poly(styrene-co-divinylbenzene) − 15 − 7
 Poly(ethyl methacrylate) − 27 − 15
 Chitosan 2 1
 Glass4 − 24 − 7
 Stainless steel5 − 38 − 15
 Polystyrene6 − 24 − 13
 Toyopearl HW-65 − 7 0
 Hexamethyldisilazane (HMDS)7 0 0
 Polydimethylsiloxane (PDMS)4 − 64 11
 Silica7 − 26 − 16
 Ceramic hydroxyapatite type 1 − 37 − 17
 Ceramic hydroxyapatite type 2 − 50 − 19
 Ceramic fluoroapatite type 1 − 46 − 18
 Ceramic fluoroapatite type 2 − 46 − 20
  1. Superscripted numbers on the colloids refers to the source of the data, 1 is from (Kakarla 2015); 2 is from (Li and Logan 2004); 3 is from (Vennapusa 2008b); 4 is from (Comelles, et al. 2010); 5 is from (Hedberg 2013); 6 is from (Carré 2007); 7 is from (Helms 2012). Rest are own measurements. The binding buffer is 20 mM phosphate buffer with 7.4. Elution condition is 20 mM phosphate buffer with 7.4 + 150 mM NaCl