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Adsorption characteristics of hydroquinone on modified lotus leaf
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[1]Han Xiuli,Song Ajuan,Bai Jing,et al.Adsorption characteristics of hydroquinone on modified lotus leaf[J].Journal of Zhengzhou University (Engineering Science),2017,38(03):25-29.[doi:10.13705/j.issn.1671-6833.2016.06.009]
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 38 Number of periods: 2017 03 Page number: 25-29 Column: Public date: 2017-05-28
Title:
Adsorption characteristics of hydroquinone on modified lotus leaf
Author(s):
Han Xiuli1; Song Ajuan2; Bai Jing1; Fang Shuqi1
1. School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, Henan; 2. Henan Engineering Laboratory of Biomass Refining Technology and Equipment, Zhengzhou 450001, Henan
Keywords:
CLC:
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DOI:
10.13705/j.issn.1671-6833.2016.06.009
Abstract:
The lotus leaf chemically modified by triethylenetetramine was prepared as adsorbent to remove hydroquinone from aqueous solution.Response surface methodology was applied to optimize the experimental conditions.The optimal conditions were reaction temperature of 81.8 ℃,reaction time of 3.8 h and ratio of triethylenetramine and material of 3 mL · g-1.A series of factors affecting the adsorption process such as the contact time,adsorbent dosage and pH were investigated.The isothermal process of hydroquinone was described very well by the Langmuir and Temkin models,the maximum adsorption capacity onto modified lotus leaf was 1.384 mmol · g-1 at the temperature of 313 K.Thermodynamic parameters indicated that the adsorption process conformed to spontaneous and endothermic process.
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