@inproceedings{171bb3b1a60449019ad2ffe131c0570a,
title = "Inhibition of bubble coalescence by salts and sugars",
abstract = "The size distribution of bubbles plays an important role in many industrial systems and is often largely determined by the outcome of collisions between bubbles either in bulk or at an orifice. If collisions readily lead to coalescence as they do in pure water, the average size of the bubbles is greatly increased. This can have a negative impact on the rate of mass transfer of materials in slurry and bioreactors or on the capture efficiency in flotation processes. Thus the control of bubble coalescence is of great importance in these systems. Bubble coalescence is readily inhibited by the addition of surfactants but this can have other detrimental effects such as foaming, unwanted changes in wettability and a reduction in the liquid-vapour surface tension. Electrolytes and sugars, in the absence of surfactants, are also effective at inhibiting bubble coalescence and in many processes are already present as desirable (or unwanted) solutes. The bubble coalescence inhibition properties imparted by a wide range of electrolytes has been carefully studied as has a limited number of sugars and equimolar mixtures of electrolytes, however the coalescence inhibition properties of complex mixtures of such solutes is relatively unexplored, despite the importance and relevance to industrial systems. Here we describe the influence of electrolytes and sugars on bubble coalescence and discuss how our detailed knowledge of pure systems may be applied to predicting the bubble coalescence behaviour of complex mixtures of salts and solutions that also contain sugars.",
keywords = "Bioreactor, Bubble coalescence, Bubble size, Concentration, Electrolytes, Sparging, Sugars, Transition concentration",
author = "V. Craig and C. Henry",
year = "2010",
language = "English",
isbn = "9781617820519",
series = "XXV International Mineral Processing Congress 2010, IMPC 2010",
pages = "1815--1826",
booktitle = "XXV International Mineral Processing Congress 2010, IMPC 2010",
note = "25th International Mineral Processing Congress 2010, IMPC 2010 ; Conference date: 06-09-2010 Through 10-09-2010",
}