NDLI: Adsorption removal of tetracycline from aqueous solution by anaerobic granular sludge: equilibrium and kinetic studies.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Li, Ke Ji, Feng Liu, Yuanlu Tong, Zilin Zhan, Xinmin Hu, Zhenhu
Description	Country affiliation: China Author Affiliation: Li K ( Department of Civil Engineering, Hefei University of Technology, Hefei 230009, China.)
Abstract	High concentration animal wastewater is often contaminated by tetracycline and an upflow anaerobic sludge bioreactor (UASB) with granular sludge is often used to treat the wastewater. The investigation of the adsorption process of tetracycline on anaerobic granular sludge during anaerobic digestion of animal wastewater will increase the understanding of antibiotics behavior in the UASB reactor. In this study, the effects of initial pH, humic acid concentration, and temperature on the removal of tetracycline by anaerobic granular sludge from aqueous solution were investigated using the batch adsorption technique in 100 mL flasks with 75 mL of work volume. The results show that the highest removal efficiency of 93.0% was achieved around pH 3.0 and the removal efficiency at the neutral pH range (pH 6.0-8.0) is about 91.5%. The thermodynamic analysis indicates that the adsorption is a spontaneous and endothermic process. The adsorption kinetics followed the pseudo-second-order equation. The adsorption isotherms analysis indicates that the Langmuir model is better than the Freundlich model for the description of the adsorption process and confirms the result of thermodynamics analysis. The maximum adsorption capacities were 2.984, 4.108 and 4.618 mg/g at 25, 35 and 45 °C, respectively. These results provide useful information for understanding the fate and transformation of tetracycline in a UASB digestion system and improving the management of tetracycline contaminated animal wastewater.
File Format	HTM / HTML
ISSN	02731223
Issue Number	7
Volume Number	67
e-ISSN	19969732
Journal	Water Science & Technology
Language	English
Publisher	IWA Publishing
Publisher Date	2013-01-01
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Discipline Hydrology Tetracycline Isolation & Purification Water Pollutants, Chemical Adsorption Animals Bioreactors Humic Substances Hydrogen-ion Concentration Kinetics Sewage Thermodynamics Evaluation Studies Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Environmental Engineering Water Science and Technology

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