Experimental Study on Removing Methylene Blue from Industrial Wastewater by Electroflocculation/Activated Carbon Adsorption
Methylene blue has stable molecular structure,thermal stability,light stability and other characteristics.It is generally ineffective to use a simple single process to purify methylene blue wastewater.The treatment effect of methylene blue simulated wastewater through the electro flocculation/activated carbon adsorption coupling process was discussed,and the effect of this coupling process on methylene blue removal was compared with that of the single electro flocculation process and activated carbon adsorption process under the same conditions.The research showed that the ability of electroflocculation/activated carbon adsorption coupling process to remove methylene blue was stronger than that of single electroflocculation process and activated carbon process under the same conditions.When the treatment time was 160 min,the dosage of coconut shell activated carbon was 10 g·L-1,the electrode plate spacing was 1.5 cm,the current density was 6 mA·cm-2,and the initial mass concentration of solution was 50 mg·L-1,the treatment effect of simulated wastewater was the best,and the removal rate of methylene blue could reach 84.84%.And through experiments,it was found that the dynamic characteristics of the composite system conformed to the first-order dynamic model.
Modified coconut shell activated carbonElectrocoagulationAdsorptionMethylene blueFirst order kinetic
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