Semi batch reactors or fed batch reactors

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The semi batch reactor is similar to the batch reactor but has the additional feature of continuous addition or removal of one or more components / streams. In addition to better yields and selectivity, gradual addition or removal assists in controlling temperature particularly when the net reaction is highly exothermic. Thus, use of a semi batch reactor intrinsically permits more stable and safer operation than in a batch operation. Fed batch reactors are rarely used in waste water treatment units.

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