Plasma Remediation Technology for Environmental Protection by ChangMing Du, JianHua Yan

By ChangMing Du, JianHua Yan

This booklet introduces a brand new expertise for environmental safeguard, specifically plasma cleansing. It brings jointly technological advances and examine on plasma turbines and their program in environmental technological know-how and engineering, together with infected soil remediation, waste water degradation, steel restoration from waste resolution, sterilization and polluted air remediation. It presents a balanced and entire dialogue of the middle rules, novel plasma reactors and diagnostics, and cutting-edge environmental functions of plasma. As such, it represents a helpful reference consultant for scientists, engineers and graduate scholars within the fields of environmental technological know-how and plasma physics.

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Meanwhile, the absorption band shift from the visible range to the UV or IR region suggested the formation of new species with simplified structures [19, 20]. In Fig. 69% for AAB) after a 100-min 26 3 Degradation and Discoloration of Textile Dyes Using Gliding Arc … 100 Discoloration Ratio (%) Fig. 5 Comparison of the discoloration ratios of three kinds of dyes AA AOII AAB 80 60 40 20 0 0 20 40 60 80 100 Time (min) treatment. 5 also reveals that the discoloration of AAB is faster at first but then is surpassed by AA and AOII.

Abdelmalek et al. [16] reported the degradation effects of gliding arc on the dyes orange II and malachite green. Du CM et al. compared the influence of degradation for different forms of TiO2 as catalysts on the gliding arc treatment of Acid Orange II [17, 18]. The gliding arc plasma can degrade complex pollutants without any complicated or expensive chemicals and catalysts additionally. Therefore, in this chapter, the discoloration and degradation of three kinds of representative textile dyes (triphenylmethane dye, Alphazurine A; azo dye, Orange G; and anthraquinone dye, Acid Anthraquinone Blue) are investigated using the gliding arc.

It can be degraded further hopefully. 28 3 Degradation and Discoloration of Textile Dyes Using Gliding Arc … Fig. 8 Color change of treated solution with an increase in treatment time (solutions were diluted for five times) Fig. 3 Discoloration and Degradation in the Presence of Zerovalent Iron (ZVI) The plasma discharge allows an accumulation of H2O2 in the solution. The treated dye solution has an acidic property. Hence, these two features correspond with the requirements of Fenton reaction. The Fenton reaction can be realized by introducing ferrous ions into the device.

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