Abstract
Optimization of draft tube position in a spouted bed reactor used for treatment of wastewater containing low concentration of heavy metals is investigated in this paper. Response surface methodology is used to optimize the draft tube height, the draft tube width and the gap between the bottom of the draft tube and the inlet nozzle. It is observed that the draft tube with a height of 60 millimeter, width of 12 millimeter and the gap of 13 millimeter between its bottom and inlet nozzle, results in optimum value of minimum spouting velocity, measured 45 cubic centimeter per second (2.7 Liter per minute) .
Highlights
IntroductionLow concentration of heavy metals in contaminated wastewater results in low reaction rates over electrode surface area and special considerations are necessary for reactor selection and design
Optimization of draft tube position in a spouted bed reactor used for treatment of wastewater containing low concentration of heavy metals is investigated in this paper
It is observed that the draft tube with a height of 60 millimeter, width of millimeter and the gap of millimeter between its bottom and inlet nozzle, results in optimum value of minimum spouting velocity, measured 45 cubic centimeter per second (2.7 Liter per minute)
Summary
Low concentration of heavy metals in contaminated wastewater results in low reaction rates over electrode surface area and special considerations are necessary for reactor selection and design. It is conjectured that this ‘‘unstable spouted bed zone’’ is incipient fluidization of the particles in the annular region [3]
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