Honeycomb tubular biochar from fargesia leaves as an effective adsorbent for tetracyclines pollutants

Honeycomb tubular biochar (HT-B) were synthesized from the fargesia leaves and used for the treatment of the environmental sewage containing tetracycline hydrochloride (TC•HCl). Unique honeycomb tubular structure had become a key influence factor to adsorption capacity of biochar leading to higher TC•HCl removal efficiency and the pore structure of HT-B was characterized and analyzed. The influence of the carbonization temperature, environment temperature and environment pH on the TC•HCl removal efficiency was investigated. It was found that the sorption kinetics of the TC•HCl show a pseudo first order. Meanwhile, the adsorption reaction was spontaneous and endothermic and appeared to exhibit a higher initial adsorption rate. In addition, the adsorption properties of HT-B were further tested by adsorbed different tetracycline, the result showed that the HT-B was universally available to the removal of tetracycline pollutants. The ageing test showed that the HT-B has remarkable stability. The experimental dates displayed that it is possible to have a better application prospect for the HT-B in the removal of antibiotic from wastewater.