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| 榕树树叶对废水中亚甲基蓝的吸附研究 |
| Study on Adsorption of Methylene Blue by Banyan Leaves in Waste Water |
| 投稿时间：2016-03-19 修订日期：2016-05-17 |
| DOI：10.14050/j.cnki.1672-9250.2016.06.015 |
| 中文关键词: 榕树树叶;亚甲基蓝;吸附;动力学;热力学 |
| 英文关键词: banyan leaves;methylene blue;adsorption;kinetics;thermodynamics |
| 基金项目:2014年福建省中青年教师教育科研项目（JA14350） |
| 作者 | 单位 | | 廖颖敏1,2, 林双梓1 | 1. 厦门大学 嘉庚学院 环境科学与工程学院, 福建 漳州 363105
2. 河口生态安全与环境健康福建省高校重点实验室, 福建 漳州 363105 |
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| 中文摘要: |
| 本研究以榕树树叶为吸附剂,考察了在投加量、pH、温度、吸附时间不同因素下对亚甲基蓝去除率的影响。建立正交实验,结果表明榕树树叶粉末吸附亚甲基蓝的最佳条件是当初始浓度为100 mg/L,投加量为0.5 g、pH为8、温度为35℃、吸附时间为75 min时,去除率最高,达到99.05%。吸附动力学过程可用准一级反应动力学方程来描述,等温吸附过程可由Freundlich吸附等温式来描述,榕树树叶粉末对亚甲基蓝的吸附过程是一个吸热过程。实验证明榕树叶是一种具有潜力的亚甲基蓝吸附剂。 |
| 英文摘要: |
| In this study, adsorption of methylene blue by banyan leaves was conducted. The influences of the adsorbent amount, pH, temperature and adsorption time on adsorption were studied. According to orthogonal experiment, when the initial concentration of banyan leaves was 100 mg/L, under the condition of 0.5 g of the dosage, 8.0 pH of solution,temperature of 35℃, and 75 minute adsorption, the banyan leaves had the highest capability for adsorbing methylene blue. The removal rate under above condition was 99.05%. The adsorption process was determined as an endothermic process based on the first order kinetics equation and the Freundlich isotherm equation. The results indicate that banyan leaves could be a promising adsorbent for methylene blue in waste water. |
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