教師資料查詢 | 類別: 期刊論文 | 教師: 彭晴玉 CHING-YU PENG (瀏覽個人網頁)

標題:Effects of chloride, sulfate and natural organic matter (NOM) on the accumulation and release of trace-level inorganic contaminants from corroding iron
學年102
學期1
出版(發表)日期2013/09/01
作品名稱Effects of chloride, sulfate and natural organic matter (NOM) on the accumulation and release of trace-level inorganic contaminants from corroding iron
作品名稱(其他語言)
著者Peng, C. Y.; J. F. Ferguson; G. V. Korshin
單位淡江大學水資源及環境工程學系
出版者London: I W A Publishing
著錄名稱、卷期、頁數Water Research 47(14), pp.5257-5267
摘要This study examined effects of varying levels of anions (chloride and sulfate) and natural organic matter (NOM) on iron release from and accumulation of inorganic contaminants in corrosion scales formed on iron coupons exposed to drinking water. Changes of concentrations of sulfate and chloride were observed to affect iron release and, in lesser extent, the retention of representative inorganic contaminants (vanadium, chromium, nickel, copper, zinc, arsenic, cadmium, lead and uranium); but, effects of NOM were more pronounced. DOC concentration of 1 mg/L caused iron release to increase, with average soluble and total iron concentrations being four and two times, respectively, higher than those in the absence of NOM. In the presence of NOM, the retention of inorganic contaminants by corrosion scales was reduced. This was especially prominent for lead, vanadium, chromium and copper whose retention by the scales decreased from >80% in the absence of NOM to <30% in its presence. Some of the contaminants, notably copper, chromium, zinc and nickel retained on the surface of iron coupons in the presence of DOC largely retained their mobility and were released readily when ambient water chemistry changed. Vanadium, arsenic, cadmium, lead and uranium retained by the scales were largely unsusceptible to changes of NOM and chloride levels. Modeling indicated that the observed effects were associated with the formation of metal–NOM complexes and effects of NOM on the sorption of the inorganic contaminants on solid phases that are typical for iron corrosion in drinking water.
關鍵字Chloride;Sulfate;Natural organic matter;Corrosion;Iron;Heavy metal;Contaminants;Accumulation;Release
語言英文
ISSN0043-1354
期刊性質國外
收錄於SCI;
產學合作
通訊作者Peng, C. Y.
審稿制度
國別英國
公開徵稿
出版型式,紙本
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