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| Desorption of non-polar organics on PDVB resin under microwave radiation cooperated with atomized water |
| JIN Yu-jiao, LU Han-feng, ZHOU Ying, ZHU Qiu-lian, SUN Xiao-yan, CHEN Yin-fei |
| Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China |
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Abstract Polydivinylbenzene (PDVB) resin synthesized by solvothermal method was used as an adsorbent, and benzene, toluene and methylene chloride were selected as typical non-polar organic pollutants. Desorption performance of non-polar organic molecules on PDVB under single microwave irradiation was compared with which introduced of ultrasonic atomized water. The influence of microwave power, atomized water amount, and types of adsorbate on resin regeneration was investigated. The desorption ratio of non-polar organics is about 50% under single microwave irradiation, while the desorption ratio would reach above 90% under microwave radiation cooperated with ultrasonic atomized water in condition of 640W microwave power and 0.105g/min atomized water amount. The temperature of regeneration bed kept below 40℃, and would not lead to resin aging, also resin structure remained stable after repeatedly adsorption and desorption. Introducing of ultrasonic atomized water would enhance microwave absorb ability, and improve resin regeneration efficiency.
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Received: 17 December 2015
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