Study of BOD microbial sensors for waste water treatment control.
A microbial sensor consisting of immobilized yeast or bacterial cells and an oxygen electrode was developed for the estimation of biochemical oxygen demand (BOD). A flow-through system was used, and the response time was within 20 min. A linear relationship was observed between the relative current decrease and the BOD of the sample solution within the range of 1-45 mg/L. The storage lifetime was greater than 1 yr. The reproducibility was quite good, within 6% fsd at a concentration of 20 mg/L BOD. Satisfactory results were attained when the biosensor was applied to the determination of BOD in brewery-plant and glutamate-plant wastewater and in a river.
Department of Biochemical Engineering, East China University of Chemical Technology, Shanghai.
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Li
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Chu
D015374:Biosensing Techniques; D010100:Oxygen / Q000032:analysis; D010101:Oxygen Consumption; D010843:Pichia / Q000254:growth & development* / Q000378:metabolism; D011549:Pseudomonas / Q000254:growth & development* / Q000302:isolation & purification / Q000378:metabolism; D012722:Sewage; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods*
D012722:Sewage; D010100:Oxygen