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《环境科学与工程前沿(英文)》 >> 2014年 第8卷 第4期 doi: 10.1007/s11783-013-0578-0

Optimization of methyl orange removal from aqueous solution by response surface methodology using spent tea leaves as adsorbent

1. School of Chemistry and Bioengineering, Suzhou University of Science and Technology, Suzhou 215011, China.2. Jiangsu Key Laboratory for Environment Functional Materials, Suzhou University of Science and Technology, Suzhou 215009, China.3. Beijing Entry-exit Inspection and Quarantine, Beijing 100026, China

发布日期: 2014-06-11

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摘要

The effective disposal of redundant tea waste is crucial to environmental protection and comprehensive utilization of trash resources. In this work, the removal of methyl orange (MO) from aqueous solution using spent tea leaves as the sorbent was investigated in a batch experiment. First, the effects of various parameters such as temperature, adsorption time, dose of spent tea leaves, and initial concentration of MO were investigated. Then, the response surface methodology (RSM), based on Box–Behnken design, was employed to obtain the optimum adsorption conditions. The optimal conditions could be obtained at an initial concentration of MO of 9.75 mg·L , temperature of 35.3°C, contact time of 63.8 min, and an adsorbent dosage 3.90 g·L . Under the optimized conditions, the maximal removal of MO was 58.2%. The results indicate that spent tea leaves could be used as an effective and economical adsorbent in the removal of MO from aqueous solution.

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