本文選題：氧化鋯 + 樹(shù)脂　； 參考：《燕山大學(xué)》2015年碩士論文

【摘要】：本文基于Donnan膜原理,成功制備了載氧化鋯的納米復(fù)合樹(shù)脂,并研究了其對(duì)水體中微量Pb2+、Cu2+的選擇吸附性能,解決了Zr O2顆粒流體動(dòng)力學(xué)性能差的應(yīng)用瓶頸;在此基礎(chǔ)上,對(duì)載氧化鋯的納米復(fù)合樹(shù)脂進(jìn)行了改進(jìn),制備出載氧化鋯-羥基氧化鎂雙氧化物的納米復(fù)合吸附材料,研究其在酸性條件下的吸附性能,并與載氧化鋯的納米復(fù)合樹(shù)脂及樹(shù)脂母體進(jìn)行對(duì)比。論文研究成果將為水體重金屬安全控制提供可行的技術(shù)支持。論文首先通過(guò)表面沉積技術(shù)合成了Zr O2-001納米復(fù)合材料并考察了其對(duì)Pb2+、Cu2+的吸附行為。Zr O2-001對(duì)Pb2+、Cu2+的吸附最佳吸附p H值為5-6.5之間;吸附等溫線能較好地符合Langmuir方程;吸附時(shí)不屬于快速吸附過(guò)程且用偽一級(jí)動(dòng)力學(xué)方程和偽二級(jí)動(dòng)力學(xué)方程均能很好擬合;與傳統(tǒng)的離子交換樹(shù)脂D001相比,在高濃度Ca2+、Na+、Mg2+競(jìng)爭(zhēng)的條件下,Zr O2-001對(duì)Pb2+、Cu2+表現(xiàn)出較強(qiáng)的吸附選擇性。經(jīng)過(guò)5個(gè)批次靜態(tài)吸附-脫附穩(wěn)定性實(shí)驗(yàn),Zr O2-001對(duì)Pb2+和Cu2+都呈現(xiàn)出相對(duì)穩(wěn)定的吸附去除效率,保持優(yōu)異的吸附性能。論文將Zr OCl2·8H2O和Mg(NO3)2擔(dān)載到含有磺酸基團(tuán)的陽(yáng)離子交換樹(shù)脂D001內(nèi),制備出納米復(fù)合樹(shù)脂Zr-Mg-001。擔(dān)載于D001孔道內(nèi)的氧化鋯及羥基氧化鎂為無(wú)定形。通過(guò)研究Zr-Mg-001在酸性條件下對(duì)典型重金屬陽(yáng)離子Cu2+的吸附性能及吸附機(jī)理,揭示了Zr-Mg-001對(duì)重金屬Cu2+的吸附效果隨p H值變化的過(guò)程且受溫度變化的影響。當(dāng)水體中存在大量Ca2+離子競(jìng)爭(zhēng)的條件下吸附性能會(huì)受到較大影響,但與Zr O2-001和D001相比仍表現(xiàn)出優(yōu)異的吸附性能。在處理能力方面,Zr-Mg-001在相同條件下比Zr O2-001處理量?jī)?yōu)異3倍以上,并且可在酸性條件下達(dá)到較好的處理效果。
[Abstract]:Based on the principle of Donnan membrane, the nano-composite resin loaded with zirconia has been successfully prepared, and its selective adsorption performance for trace Pb2 Cu2 in water has been studied, which solves the bottleneck of poor hydrodynamic performance of ZrO 2 particles. The nano-composite resin loaded with zirconia was improved to prepare the nano-composite adsorption material carrying zirconia and magnesium hydroxide, and its adsorption properties under acidic conditions were studied. The results were compared with the nano-composite resin and resin matrix loaded with zirconia. The research results will provide feasible technical support for the safety control of heavy metals in water. Firstly, ZrO2-001 nanocomposites were synthesized by surface deposition technique, and the adsorption behavior of ZrO2-001 on Pb2 Cu2 was investigated. The optimum adsorption pH value of ZrO2-001 on Pb2 Cu2 was 5-6.5, and the adsorption isotherm was in good agreement with Langmuir equation. The adsorption is not a rapid adsorption process and can be fitted well by pseudo-first-order kinetic equation and pseudo-second-order kinetic equation, compared with the traditional ion exchange resin D001. Under the condition of high concentration of Ca2 Na / mg _ 2, the adsorption selectivity of Pb2 _ (2) O _ (2-001) to Pb2 _ (鈪，

本文編號(hào)：1984078