1. Institute of Particle Science and Engineering, School of Process, Environmental and Materials Engineering, The University of Leeds, Leeds LS2 9JT, U.K., Clairet Scientific Limited, 17/18 Scirocco Close, Moulton Park Industrial Estate, Northampton NN3 6AP, U.K., and Centre for Process Analytics and Control Engineering, School of Chemical Engineering and Advanced Materials, The University of Newcastle, Newcastle NE1 7RU, U.K.