| 类水滑石的插层改性及其对沼液中磷的吸附分离; Preparation of Intercalated Layered Double Hydroxides and Its Adsorption of Phosphate in Biogas Slurry | |
| 郁强强 ; 张志榕 ; 郑杨清 ; 郑艳梅 ; 王海涛 ; 王远鹏 ; 何宁 ; 李清彪 | |
| 2015-01-28 | |
| 关键词 | 锌铝类水滑石 均苯四甲酸 沼液 磷 吸附 ZnAl layered double hydroxides pyromellitic acid biogas slurry phosphate adsorption |
| 英文摘要 | 通过恒定PH法成功合成了均苯四甲酸插层的锌铝类水滑石(zn2Al-PMA-ldHS),考察了它的特征结构及组成通式,并对沼液中磷的吸附性能进行了研究.结果表明,zn2Al-PMA-ldHS对四川遂宁沼气工程所产沼液中磷的吸附性能要大大优于未插层的锌铝类水滑石(zn2Al-Cl-ldHS).当吸附剂用量为0.1g/l时,zn2Al-PMA-ldHS在4H内,对沼液中磷的吸附量由未插层前的11.58Mg/g提高了约248%,达到40.31Mg/g.同时该吸附剂对沼液中磷酸根的吸附过程符合准二级吸附动力学模型,吸附等温线表现为lAngMuIr型.用0.1 MOl/l nAOH溶液对吸附后的zn2Al-PMAldHS进行解吸再生,经过4个循环周期,其对沼液中磷的吸附量仍能达到首次吸附量的70%左右.; ZnAl layered double hydroxides intercalated with pyromellitic acid(Zn2Al-PMA-LDHs)was synthetized at pH of 8.0±0.2to maintain the coprecipitation at low supersaturation.The structure and composition of Zn2Al-PMA-LDHs were investigated,and the general formula was confirmed.Results indicated that Zn2Al-PMA-LDHs had a better adsorbability for phosphate than the controlled Zn2Al-Cl-LDHs in biogas slurry from Biogas Engineering of Suining Sichuang.The phosphate uptake of Zn2Al-PMALDHs was 40.31mg/g when the adsorption dose was 0.1g/L in 4h,however,the phosphate uptake of Zn2Al-Cl-LDHs was only11.58mg/g.The adsorption process followed pseudo-second-order kinetics,and the adsorption isotherms showed a good fit with a Langmuir-type equation.The desorption of phosphates from Zn2Al-PMA-LDHs can be achieved using 0.1 mol/L NaOH solution.And the phosphate uptake of Zn2Al-PMA-LDHs after 4adsorption/desorption cycles was about 70% of that in the first cycle.; 国家重点基础研究发展计划(973)项目(2013CB733505) |
| 语种 | zh_CN |
| 内容类型 | 期刊论文 |
| 源URL | [http://dspace.xmu.edu.cn/handle/2288/107181]  |
| 专题 | 化学化工－已发表论文 |
| 推荐引用方式 GB/T 7714 | 郁强强,张志榕,郑杨清,等. 类水滑石的插层改性及其对沼液中磷的吸附分离, Preparation of Intercalated Layered Double Hydroxides and Its Adsorption of Phosphate in Biogas Slurry[J],2015. |
| APA | 郁强强.,张志榕.,郑杨清.,郑艳梅.,王海涛.,...&李清彪.(2015).类水滑石的插层改性及其对沼液中磷的吸附分离.. |
| MLA | 郁强强,et al."类水滑石的插层改性及其对沼液中磷的吸附分离".(2015). |
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