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題名 | 以電動法移除土壤中鋅的初步研究=Preliminary Study on the Removal of Zinc from the Contaminated Soil using an Electrokinetic Process |
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作者姓名(中文) | 薩支高; 陳怡萱; 吳淑芬; 張仕翰; | 書刊名 | 中國農業化學會誌 |
卷期 | 37:1 1999.03[民88.03] |
頁次 | 頁54-62 |
分類號 | 434.227 |
關鍵詞 | 受鋅污染土壤; 電動法; Zinc contaminated soil; Electrokinetic remediation; |
語文 | 中文(Chinese) |
中文摘要 | 本研究是以電化學原理為基礎來探討受鋅污染土壤的復育技術,採用同為洪積母 質紅壤的屏東縣老埤系(Lo)添加鋅土壤及嘉義縣一處工業區附近已遭鋅污染的大埔美 系(Tf)土壤為材料,並將老埤系添加鋅的供試土壤混入有機質以進行電動法效率的比 較。老埤系土壤是PH值為4.3旳酸性黏土,而大埔美系鋅污染土壤的PH值為6.2, 為偏中性的砂質壤土。老埤系及大埔美系受鋅污染土壤中原始鋅全量濃度分別為101 mg/kg及1,940gm/kg。老埤系土壤經初步鋅的飽和吸附性試驗後,分別添加1,000、 1,500及2000mg/kg濃度的鋅配製成三種模擬受污土壤,並與大埔美系受污染土壤 同時進行通電試驗,以觀察在定電壓(8伏特)直流電下通電不同時間(1、5、10及 30天)土壤中鋅濃度的變化。結果顯示,對老埤系模擬受污染土壤通電30天後陽 極附近土壤中鋅的移除率為90%以上,而大埔美系受鋅污染土壤極附近鋅的移除率 則為80%左右,移除率高低與鋅在土壤中存在型態的穩性有關、混入有機質於添加 鋅的老埤系土壤中後再通電發現,鋅的電動法移除效率隨著土壤中有機質的增加而降 低。 |
英文摘要 | Electrochemical principles were used herein to assess the feasibility of removing Zn from spiked and contaminated soils. This study examined soil samples from two different locations on Taiwan belinging to similar soil groups, Diluvium Red Soil. Soil of the series Laopi (Lo) from Pingtung County was used for the Zn spiked sample, and soil of the series Dapomay (Tf) from Chiayi County served as the Zn contaminated soil. According to the results, soil of the series Lo containing 101 mg/kg of Zn soil is acidic clay, Soil of the series Tf is a neutral loamy sand and has 1,940 mg/kg of Zn. Electrockinetic processes performed on 1,000 to 2,000 mg/kg Zn spiked and water saturated soils could remove more than 90% of the Zn from the zone near the cathode after 30 days of reaction. In Zn contaminated soil, electrokinetic process could remove only around 80% of the Zn after 30 days since most of the Zn had higher stability under higher soil pH. Elongation of the reaction time could promote the removal efficiency. Organic matter additions were also found to reduce the removal efficiency of Zn in this study. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。