Studies On Modification, Regeneration And Adsorption Properties Of The Powder Activated Carbon

Activated carbon is a kind of superior, non-toxic and tasteless green adsorbent. Due to itself has the properties of a higher adsorbability, a strong catalytic performance, the organic matter adsorbed in the pores of activated carbon, so as to achieve the purpose of degradation, the use of activated carbon caused widespread concern in the field of environmental protectionIn this paper, modification methods such as acid and alkali treatment, high temperature heating, ultrasonic radiation and microwave heating, modified activated carbon samples were prepared in four series; Different modified activated carbon were respectively investigated the degradation effect of Rhodamine B, degradation of methylene blue and phenol solution, discussed the impact of concentration, adsorption time on the degradation rate; Hydrochloric acid modified activated carbon as the focus research, under1h adsorption time, Rhodamine B, methylene blue and phenol solution adsorption rate is higher than80%; The different types modified activated carbon in regeneration treatment, and investigate the influence of the activated carbon regeneration conditions of modified activated carbon quality, the regeneration time, the regeneration temperature. Results show that the microwave-ultrasonic regeneration method of modified activated carbon adsorption phenol solution and Rhodamine B regeneration rates were the highest, respectively89.9%and88.2%. Therefore, hydrochloric acid modified activated carbon effectively adsorption of organic dyestuff and phenol solution, appropriate conditions of regeneration process, can restore its absorption, repeated use, the environment will not cause secondary pollution.