| 4种胺基改性甘蔗渣对Cu2+的静态吸附 |
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| 引用本文： | 汪 景,汪 燚,董双凤,余军霞,池汝安,李红霞.4种胺基改性甘蔗渣对Cu2+的静态吸附[J].武汉工程大学学报,2020,42(6):591-596. |
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| 作者姓名： | 汪 景 汪 燚 董双凤 余军霞 池汝安 李红霞 |
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| 作者单位： | 武汉工程大学化学与环境工程学院，绿色化工过程教育部重点实验室，湖北 武汉430205 |
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| 摘 要： | 采用两步法制备了乙二胺（EDA）、二乙烯三胺（DETA）、三乙烯四胺（TETA）、四乙烯五胺（TEPA）系列胺基改性甘蔗渣（SCB）吸附剂，探讨了浓度、吸附时间、酸度和共存离子对四种吸附剂吸附Cu2+的影响。结果表明四种胺基改性吸附剂对铜离子的吸附等温线符合Langmuir模型，吸附可在1h内达到平衡，动力学过程符合伪二级动力学模型，吸附最佳酸度范围为4.5~5.5。4种胺基改性甘蔗渣吸附剂对Cu2+的吸附容量大小的顺序为:DETA-SCB>TEPA-SCB>TETA-SCB>EDA-SCB，对Cu2+选择性顺序为:EDA-SCB>DETA-SCB>TETA-SCB>TEPA-SCB。共存干扰离子对Cu2+吸附容量影响的大小顺序:Zn2+>Cd2+>Ca2+≈Mg2+>K+≈Na+。
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| 关 键 词： | 生物吸附剂 甘蔗渣 改性 吸附 Cu2+ |
Static Adsorption of Cu2+ Using Bagasse Modified by Four Kinds of Amine |
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| Authors: | WANG Jing WANG Yi DONG Shuangfeng YU Junxia CHI Ru’an LI Hongxia |
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| Affiliation: | School of Chemistry and Environmental Engineering，Wuhan Institute of Technology，Key Laboratory of Green Chemical Processes of Ministry of Education，Wuhan 430074，China |
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| Abstract: | Ethylenediamine（EDA）， diethylenetriamine（DETA），triethylenetetramine（TETA），and tetra- ethylenepentamine（TEPA）modified bagasse（SCB）wereprepared through two-steps method， and their adsorption performance including isotherm，kinetic，pH and co-ions effect were investigated.Results showed that adsorption isotherms of Cu2+on EDA-SCB，DETA-SCB，TETA-SCB，and TEPA-SCB fits Langmuir model，and the adsorption can finish within1h.The optimum pH values for Cu2+adsorption on the four modified SCBs range from 4.5 to 5.5.Adsorption capacity of the four modified SCBs follows the order of DETA-SCB>TEPA-SCB>TETA-SCB>EDA-SCB，while adsorption selectivity follows the order of EDA-SCB>DETA-SCB>TETA-SCB>TEPA-SCB. |
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| Keywords: | biosorbent bagasse modification adsorption Cu2+ |
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