Flat-plate cartridge

Figure 3.76 Dorr-Oliver assembled flat-plate cartridge.

Parallel-Leaf Cartridge. A parallel-leaf cartridge consists of several flat plates, each having membrane sealed to both sides (Fig. 13). The plates have raised (2—3 mm) rails along the sides in such a way that, when they are stacked, the feed can flow between them. They are clamped between two stainless-steel plates with a central tie rod. Permeate from each leaf drains into an annular channel surrounding the tie rod (33). 

Effect of recovery on the choice To recover liquid in the order of preference of filters. Section 5.14 and filtering centrifuges. Section 5.13 deep bed, horizontal vacuum, pressure leaf, gravity flat table cartridge, precoat drum and plate and... 

Several filter geometries are available for sterile filtration. They consist of flat membranes in a stainless steel press (<293 mm), pleated membranes housed in stainless steel cartridges, and stacked plates in the form of flat segments of membrane filters. 

Not only does the bulk chemical industry employ all of the membrane separation processes, but partly because of that, the sector gives home also to all of the various physical embodiments of membranes flat sheets, plate and frame, pleated cartridges, tubular, hollow fibre, capillary module, and spiral w ound. More particularly, this end Use sector has considerable demaitd for membranes able to resist high temperature or highly corrosive fluids, such that metallic membranes and ceramic materials, especially of the monolith type w ith parallel cylindrical chambers, are w idely used. 

The Kubota MBR uses a flat-sheet manbrane made of polyolefin with a nonwoven cloth base. Each m brane cartridge consists of solid acrylonitrile butadiene styrene support plate with a spacer layer between it and a flat-sheet membrane on both sides. Permeate is drawn through the membrane from the bulk fluid by a partial vacuum applied within the membrane plate matrix while retaining the solids... 

All diree kinds of membranes (RO, UF and MF) may be manuhictured in either flat sheet, tube or hollow tubular form. Generally, the hollow fiber (RO and smaller) or hollow tubular (UF and larger) configurations are less effective per unit area than are the flat sheet configurations, but this is offset by the greater effective area diat can be packed into a volume of hollow tubules or fibers. The flat sheet configurations are usually plate-and-frame, spiral-wound or pleated cartridges. 

The stationary phase in SPE comes in the form of a packed syringe-shaped cartridge, a 96-well plate [153], or a flat disk. These devices can be mounted on commercially available extraction manifold which allow many samples to be processed simultaneously. Up to 24 cartridges can be placed in a typical cartridge SPE manifold, while 6 disks can be placed in a typical disk SPE manifold. These SPE manifolds are usually equipped with a vacuum port to speed up the extraction process. The analytes are collected in sample tubes inside or below the manifold after they pass through the sorbent. 

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