地下水與土壤污染整治技術─子計劃4 ：利用零價鐵及二氧化碳曝氣還原硝酸根之水質影響效應

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Resources Management > Chna Project > Item 310902800/953

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/953

Title:	地下水與土壤污染整治技術─子計劃4 ：利用零價鐵及二氧化碳曝氣還原硝酸根之水質影響效應 Nitrate Removal by Fe0/CO2 Process with Various Water Qualities
Authors:	廖志祥
Contributors:	環境資源管理系
Keywords:	Nitrate groundwater zero-valent iron carbon dioxide humic acid
Date:	2004
Issue Date:	2008-06-19 15:33:59 (UTC+8)
Publisher:	台南縣：嘉南藥理科技大學環境資源管理系
Abstract:	Nitrate-contaminated groundwater has become a major issue of public health concern in recent years. As reported from various research groups, zero-valent iron-based process exhibits great potential for nitrate removal. However, the effects of various water qualities on this process have not been clearly understood, including natural organic matter, calcium, sodium, chloride and carbonate ions. In this study, CO2 was bubbled into Fe0-contained solution to create an acidic environment favorable to Fe0 corrosion. Results showed that nitrate removal was inhibited significantly in the presence of humic acid. The blockage of reactive sites of Fe0 might occur from adsorption of humic acid. Moreover, calcium was found to inhibit nitrate removal as well. Interestingly, chloride plays a role of promoting the reduction of nitrate. Concerning other species, sodium and carbonate ions imposed only slight effect on nitrate removal.
Relation:	計畫編號：CNEM9303_4
Appears in Collections:	[Dept. of Environmental Resources Management] Chna Project

Files in This Item:

File	Description	Size	Format
93CNEM9303_4.pdf		953Kb	Adobe PDF	962	View/Open