環保專案成果報告查詢系統

專案計畫編號	EPA-104-U1-U1-04-003
經費年度	104
計畫經費	1,970 千元
專案開始日期	2015/04/25
專案結束日期	2015/11/30
專案主持人	謝子陽
主辦單位	永續發展室(停用)
承辦人	林燕柔
執行單位	中國科技大學
專案分類	廢棄物管理
中文關鍵字	萃取、玻璃拋光粉、鈰離子、鑭離子
英文關鍵字	extraction, glass polishing powder, Cerium, Lanthanum
協同主持人	謝學真；劉玉玲
共同主持人
計畫聯絡人	謝子陽
計畫聯絡電話	02-29313416#2503
計畫聯絡信箱	tyhsien@cute.edu.tw

中文摘要	本研究為應用具分散反萃取相支撐式液膜分離並回收純化廢拋光粉(廢鈰泥)中鑭鈰稀土金屬離子，除探討該技術對稀土金屬離子之分離能力，並評估回收純化鈰離子(Cerium)及鑭離子(Lanthanum)之效益。本研究先自廢鈰泥中利用硫酸浸漬溶蝕程序，結果顯示硫酸在固液比3g / 50ml、溶劑萃取溫度27℃、反應時間 4小時後，鑭鈰離子之浸漬回收率可達100%，可成功製備淡黃橙色硫酸鈰及硫酸鑭混合溶液，以作為本計畫後續廢鈰泥中鑭鈰稀土金屬離子分離及純化研究評估之用。在前60分鐘的分離及回收純化程序中先使用D2EHPA及PC-88A(濃度比例1:4)、Isopar-L、鹽酸分別作為前60分鐘分離及回收純化程序中的混摻萃取劑、稀釋劑、以及反萃取劑，可成功分離廢鈰泥硫酸根鑭鈰離子溶液中四價鈰離子；另外再以PC-88A、硫酸、酸鹼值4.0分別作為後續分離及回收純化程序中的萃取劑、反萃取溶液、酸鹼調整以分離廢鈰泥硫酸根鑭鈰離子溶液中之剩餘三價鈰離子及三價鑭離子。研究中並探討各實驗參數對鑭鈰離子透過中空纖維薄膜之透過係數的影響；實驗參數包括進料廢鈰泥硫酸根混合溶液的酸鹼值、萃取劑的濃度及種類以及水相反萃取劑的濃度，實驗結果發現進料溶液的酸鹼值確實會影響鑭鈰離子之分離及反萃取純化。藉由實驗參數調控，可成功分離並純化廢鈰泥硫酸根鑭鈰混合稀土金屬離子(回收率: 鈰離子94.5 %及鑭離子98.5 %)。本研究可作為後續實場廢鈰泥中鑭鈰稀土金屬離子分離及純化操作評估之用。
中文關鍵字	萃取、玻璃拋光粉、鈰離子、鑭離子

中文摘要

本研究為應用具分散反萃取相支撐式液膜分離並回收純化廢拋光粉(廢鈰泥)中鑭鈰稀土金屬離子，除探討該技術對稀土金屬離子之分離能力，並評估回收純化鈰離子(Cerium)及鑭離子(Lanthanum)之效益。本研究先自廢鈰泥中利用硫酸浸漬溶蝕程序，結果顯示硫酸在固液比3g / 50ml、溶劑萃取溫度27℃、反應時間 4小時後，鑭鈰離子之浸漬回收率可達100%，可成功製備淡黃橙色硫酸鈰及硫酸鑭混合溶液，以作為本計畫後續廢鈰泥中鑭鈰稀土金屬離子分離及純化研究評估之用。在前60分鐘的分離及回收純化程序中先使用D2EHPA及PC-88A(濃度比例1:4)、Isopar-L、鹽酸分別作為前60分鐘分離及回收純化程序中的混摻萃取劑、稀釋劑、以及反萃取劑，可成功分離廢鈰泥硫酸根鑭鈰離子溶液中四價鈰離子；另外再以PC-88A、硫酸、酸鹼值4.0分別作為後續分離及回收純化程序中的萃取劑、反萃取溶液、酸鹼調整以分離廢鈰泥硫酸根鑭鈰離子溶液中之剩餘三價鈰離子及三價鑭離子。研究中並探討各實驗參數對鑭鈰離子透過中空纖維薄膜之透過係數的影響；實驗參數包括進料廢鈰泥硫酸根混合溶液的酸鹼值、萃取劑的濃度及種類以及水相反萃取劑的濃度，實驗結果發現進料溶液的酸鹼值確實會影響鑭鈰離子之分離及反萃取純化。藉由實驗參數調控，可成功分離並純化廢鈰泥硫酸根鑭鈰混合稀土金屬離子(回收率: 鈰離子94.5 %及鑭離子98.5 %)。本研究可作為後續實場廢鈰泥中鑭鈰稀土金屬離子分離及純化操作評估之用。

中文關鍵字

萃取、玻璃拋光粉、鈰離子、鑭離子

類型	檔名	檔案大小	說明	最新版公開日期
期末報告	104環保署期末詳細版(公開版中國科大).pdf	0MB		2018/2/1 上午 12:00:00

摘要	The purpose of this study was to apply the supported liquid membranes with strip dispersion (SLM-SD) technology on separation as well as recovery and purification of two rare earth metal ions, cerium and lanthanum, from spent glass polishing powder after leaching processes. In this work, through solvent leaching processes, the light yellow mixed sulfuric cerium and lanthanum solutions can be well fabricated for the applications of the following research. D2EHPA and PC-88A with a concentration ratio of 1:4, Isopar-L, and aqueous hydrochloric acid were used to be the complex extractants, diluent, and stripping solutions respectively in order to investigate the separation and recovery efficiency of the support liquid membranes with strip dispersion process along the first sixty mimutes operations. Cerium ions (Ce4+) can be successfully removed from the mixed sulfuric cerium and lanthanum solutions in this stage. Additionally, PC-88A, and aqueous sulfuric acid were applied to be the extractants and stripping solutions respectively in order to investigate the separation and recovery efficiency of the support liquid membranes with strip dispersion process at pH 4.0 after the first sixty mimutes operations. Cerium ions (Ce3+) as well as lanthanum ion (La3+) can be successfully separated and recovered in this following process. Some parameters influencing on permeabilities of cerium and lanthanum ions including the acidity of mixed sulfuric cerium and lanthanum solutions, concentrations and catagory of extractants, as well as stripping agent concentrations were investigated in detailed. Results showed the acidity of mixed sulfuric cerium and lanthanum solutions will affect the permeabilities of cerium and lanthanum ions. Under these experimental parameters, the goal of 94.5 % and 98.5 % separation ratio as well as 88.2% and 100% purification ratio for cerium and lanthanum ions respectively can be achieved. Results of this study can provide useful evidences for further practical applications.
英文關鍵字	extraction, glass polishing powder, Cerium, Lanthanum

摘要

The purpose of this study was to apply the supported liquid membranes with strip dispersion (SLM-SD) technology on separation as well as recovery and purification of two rare earth metal ions, cerium and lanthanum, from spent glass polishing powder after leaching processes. In this work, through solvent leaching processes, the light yellow mixed sulfuric cerium and lanthanum solutions can be well fabricated for the applications of the following research. D2EHPA and PC-88A with a concentration ratio of 1:4, Isopar-L, and aqueous hydrochloric acid were used to be the complex extractants, diluent, and stripping solutions respectively in order to investigate the separation and recovery efficiency of the support liquid membranes with strip dispersion process along the first sixty mimutes operations. Cerium ions (Ce4+) can be successfully removed from the mixed sulfuric cerium and lanthanum solutions in this stage. Additionally, PC-88A, and aqueous sulfuric acid were applied to be the extractants and stripping solutions respectively in order to investigate the separation and recovery efficiency of the support liquid membranes with strip dispersion process at pH 4.0 after the first sixty mimutes operations. Cerium ions (Ce3+) as well as lanthanum ion (La3+) can be successfully separated and recovered in this following process. Some parameters influencing on permeabilities of cerium and lanthanum ions including the acidity of mixed sulfuric cerium and lanthanum solutions, concentrations and catagory of extractants, as well as stripping agent concentrations were investigated in detailed. Results showed the acidity of mixed sulfuric cerium and lanthanum solutions will affect the permeabilities of cerium and lanthanum ions. Under these experimental parameters, the goal of 94.5 % and 98.5 % separation ratio as well as 88.2% and 100% purification ratio for cerium and lanthanum ions respectively can be achieved. Results of this study can provide useful evidences for further practical applications.

英文關鍵字

extraction, glass polishing powder, Cerium, Lanthanum