Differential flow

Rovinsky A B and Menzinger M 1993 Self-organization induoed by the differential flow of aotivator and inhibitor Phys. Rev. Lett. 70 778-81... 

Eactors that could potentiaHy affect microbial retention include filter type, eg, stmcture, base polymer, surface modification chemistry, pore size distribution, and thickness fluid components, eg, formulation, surfactants, and additives sterilization conditions, eg, temperature, pressure, and time fluid properties, eg, pH, viscosity, osmolarity, and ionic strength and process conditions, eg, temperature, pressure differential, flow rate, and time. 

A continuous potentiometric determination of sulphate in a differential flow system160 consisted of a flow cell with two Pb2+-selective electrodes in series. All solutions contained 75% of methanol and were adjusted to pH 4 a standard solution of Pb(II) passes the first sensor and, after being mixed with the sulphate sample stream, yielding a PbS04 precipitate in addition to excess of Pb(II), it passes the second sensor from the potential difference between the sensors the sulphate content of the sample can then be derived. 

Restelli and Coull [AIChE J., 72 (292), 1966] have studied the transmethylation reaction of dimethylamine in a differential flow reactor using montmorillonite as a catalyst. They measured initial reaction rates under isothermal conditions for this heterogeneous catalytic process. Steady-state operating data were recorded. 

In a differential flow reactor the contact time and the conversion are small so the reaction rate is r = An/At. Assume a rate equation... 

---