Research of Antibiotics Adsorption by Sludge Activated Carbon

Sludge activated carbon was made from concentration and dehydration sludge of Beijing Fangzhuang WTP with ZnCl2 as activator,sludge activated carbon was characterized and used for gatifloxacin adsorption.Effects of time,adsorbent capacity,initial concentration,pH for adsorption capacity were studied and orthogonal experiments were done.Results showed that adsorption capacity of the two kind of sludge activated carbon was almost same while the time,adsorbent capacity,initial concentration,pH changed respectively,but the dehydration sludge activated carbon showed better short-term adsorption performance.Initial concentration had the greatest influence on adsorption capacity,the best condition was 200 mg/L of initial concentration,0.05g of adsorbent capacity,pH 9 for 2hours adsorption.The highest adsorption capacity of concentration and dehydration sludge activated carbon were 34.541 mg/g,34.925 mg/g,which indicated both of them have well adsorption ability for gatifloxacin.