Adsorption and ion exchange are examples of fixed-bed sorption processes that show transient behavior. This means differential equations needed to design them. As a result, numerical methods commonly utilized solve these equations. The solution frequently used in analytical is called the Thomas solution. gave complete adds nonlinear equilibrium relationship depends on second-order reaction kine...

A gas-liquid-solid inverse  uidization airlift bioreactor was proposed by combining advantages of external-loop airlift reactors and inverse  uidized beds. This airlift bioreactor comprises a gas-liquid riser, a gas separator, a liquid-solid inverse  uidized downcomer and a bottom connector. The effects of the gas velocity and the particle loading on the gas holdup in the riser and the liqui...

The performance of a particulate-biofilm, expanded-bed process for nitrification of activated sludge final effluent (ASFE) is reported for a plant receiving mixed industrial and domestic wastewater. The support material for the particulate-biofilms was glassy coke, to which the nitrifying bacteria attached and formed a highly active biofilm. An average nitrification rate of 1.7+/-0.6 kg m(expan...

Plant derived chemicals are valuable sources for a variety of pharmaceuticals, flavors, dyes, fragrance, stimulants, poisons. Hairy roots are induced in susceptible plants by transformation with Agrobacterium rhizogenes. Here we summarize the recent work using a novel bioreactor, the mist reactor, for the culture of hairy roots from many plant species. This study is based on the development of ...