Removal of Sulfa Antibiotics in Low-Remperature Water Using Scoria
Rui Li1,2, Yuling Zhang1,2, Jiali Wang1,2, Hong Qian1,2
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1Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University,
Changchun 130021, China
2Institute of Water Resources and Environment, Jilin University, Changchun 130021, China
Submission date: 2016-10-21
Final revision date: 2016-12-21
Acceptance date: 2016-12-29
Online publication date: 2017-08-11
Publication date: 2017-09-28
Pol. J. Environ. Stud. 2017;26(5):2037–2045
Scoria, a natural silicate mineral, was used for the adsorption removal of antibiotics from water. The kinetics of adsorption were studied during the experiment and the results showed that the adsorption of three antibiotics (sulfathiazole (ST), sulfamethazine (SM2), and sulfamethoxazole (SMX)) by scoria fit the Freundlich isotherm well. Additionally, batch experiment data were fitted using pseudo first-order and pseudo second-order equations, and the calculated capacities for the three antibiotics were 0.7688, 0.7242, and 0.6341mg/g, respectively. Moreover, the effects of various water chemistry factors on the removal of the three antibiotics were explored, and Fe2+ and Mg2+ were found to promote the adsorption. The alkalinity and hardness of water both had significant effects on absorption of the three antibiotics by scoria. The carbon content of scoria increased significantly, and energy dispersion spectrum analysis showed that it could remove three sulfa antibiotics from low-temperature (10°C) water effectively. Overall, scoria is an effective natural material for purifying low-temperature water polluted with ST, SM2, and SMX.