EPA-96-U1U1-02-105

096

1,900 千元

2007/12/27

2008/11/30

謝淑惠

永續發展室(停用)

吳婉怡

國立虎尾科技大學

水質保護

奈米鐵鎳,奈米碳管,硒酸,鉛,染料

Nano Fe/Ni, CNT, Selenium, Lead, Dye

吳婉怡

0911973860

wywu@sun.epa.gov.tw

本計畫主要配合環保署延續環境奈米科技的應用開發，發展奈米複合材料，以改善目前奈米粒子實際操作的問題包括表面活性強、易團聚、不易保存、不確定健康與環境風險等，處理日趨複雜的水污染。 本計畫找出可將高鐵含量37 - 72 nm奈米Fe-Ni粒子均勻固定在微米氧化鋁(α-Al2O3)粉和多壁奈米碳管(MWCNT)上形成新奈米材料之無電鍍製程方法，藉由鎳抑制鐵的表面氧化，並可有效催化去除三氯乙烯(TCE)不產生含氯中間物產物，及去除模擬混合污染物廢水(AO7 25/100 mg/l，HSeO3-/ SeO3-2 8.07 mg/l，Pb2+11.58 mg/l)。不同鐵濃度之Fe-Ni/Al2O3在大氣環境下可去除2 mg/L的TCE其假一階基準化速率常數為0.16 - 0.38 L/h-m2，於pH 9時可處理低濃度之混合污染物達放流水標準，然微量溶解Ni。對於高濃度之複雜污染源廢水，Fe-Ni/CNT在pH 5及7處理可達放流水標準，也發現會溶解微量Fe及Ni。共處理反應後奈米Fe-Ni粒子以SEM/EDS分析仍剩餘50 %以上，可繼續利用。

奈米鐵鎳,奈米碳管,硒酸,鉛,染料

Total-PDF-final.pdf

4MB

[期末報告]公開完整版

2009/3/1 上午 12:00:00

This project is to develop the environmental application of nanotechnology by Taiwan Environmental Protection Administration (TEPA). The main purpose is to make nano-materials in order to reduce the operational problems of reactive surface, easy aggregation, difficult in preservation, and uncertain health and environmental risks as well as to treat the complicated pollutants in water body. This study found the production methods to uniformly fix the nano-particles of 37 to 72 nm iron/nickel on micro-sized α-Al2O3 powders and multi-walled carbon nano-tube (MWCNT) to form new nano-materials. The particles could reduce the oxidation of iron by nickel, effectively catalyze the de-chlorination of the chlorinated solvent (trichloroethane, TCE), and simultaneously remove mixed pollutants (AO7 25/100 mg/l，HSeO3-/ SeO3-2 8.07 mg/l，Pb2+11.58 mg/l). With different iron contents, Fe-Ni/Al2O3 could remove 2 mg/L TCE of the surface-area normalized Pseudo- first order reaction rate coefficients of 0.16 to 0.38 L/h-m2 and could reduce the low concentration of mixed pollutants to effluent standards with slightly Ni release. Fe-Ni/CNT could reduce the high concentration of mixed pollutants to effluent standards with slightly Fe and Ni release at pH 5 and 7. After the treatment, the residual Fe-Ni nano-particles were more than 50% and could still be used again.

Nano Fe/Ni, CNT, Selenium, Lead, Dye