کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6335081 | 1620234 | 2015 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of selected static methods used to estimate element mobility, acid-generating and acid-neutralizing potentials associated with geologically diverse mining wastes
ترجمه فارسی عنوان
ارزیابی روش های استاتیک انتخابی که برای برآوردن تحرک عناصر، پتانسیل اسیدی و خنثی سازی اسید در ارتباط با زباله های معدنی متنوع زمین شناسی استفاده می شود
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کلمات کلیدی
deionizedCVAFSU.S. Geological SurveyTCLPFLTUSGSNPRNNPSynthetic Precipitation Leaching ProcedureSPLPAMDICP-AESABAU.S. Environmental Protection Agency - آژانس حفاظت از محیط زیست ایالات متحدهX-ray diffraction analysis - تحلیل پراش اشعه ایکسToxicity characteristic leaching procedure - روش شستشو مشخصه سمیAcid mine drainage - زهکشی اسیدی معدنinductively coupled plasma-atomic emission spectrometry - طیف سنجی انتشار پلاسما-اتم به صورت القاییinductively coupled plasma-mass spectrometry - طیف سنجی جرم پلاسما به صورت القاییICP-MS - طیفسنجی جرمی پلاسمای جفتشده القاییSEM - مدل معادلات ساختاری / میکروسکوپ الکترونی روبشیscanning electron microscope - میکروسکوپ الکترونی اسکنXRD - پراش اشعه ایکسIon chromatography - کروماتوگرافی یونUSEPA - گام
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
چکیده انگلیسی
A comparison study of selected static leaching and acid-base accounting (ABA) methods using a mineralogically diverse set of 12 modern-style, metal mine waste samples was undertaken to understand the relative performance of the various tests. To complement this study, in-depth mineralogical studies were conducted in order to elucidate the relationships between sample mineralogy, weathering features, and leachate and ABA characteristics. In part one of the study, splits of the samples were leached using six commonly used leaching tests including paste pH, the U.S. Geological Survey (USGS) Field Leach Test (FLT) (both 5-min and 18-h agitation), the U.S. Environmental Protection Agency (USEPA) Method 1312 SPLP (both leachate pH 4.2 and leachate pH 5.0), and the USEPA Method 1311 TCLP (leachate pH 4.9). Leachate geochemical trends were compared in order to assess differences, if any, produced by the various leaching procedures. Results showed that the FLT (5-min agitation) was just as effective as the 18-h leaching tests in revealing the leachate geochemical characteristics of the samples. Leaching results also showed that the TCLP leaching test produces inconsistent results when compared to results produced from the other leaching tests. In part two of the study, the ABA was determined on splits of the samples using both well-established traditional static testing methods and a relatively quick, simplified net acid-base accounting (NABA) procedure. Results showed that the traditional methods, while time consuming, provide the most in-depth data on both the acid generating, and acid neutralizing tendencies of the samples. However, the simplified NABA method provided a relatively fast, effective estimation of the net acid-base account of the samples. Overall, this study showed that while most of the well-established methods are useful and effective, the use of a simplified leaching test and the NABA acid-base accounting method provide investigators fast, quantitative tools that can be used to provide rapid, reliable information about the leachability of metals and other constituents of concern, and the acid-generating potential of metal mining waste.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Geochemistry - Volume 57, June 2015, Pages 125-139
Journal: Applied Geochemistry - Volume 57, June 2015, Pages 125-139
نویسندگان
Philip L. Hageman, Robert R. Seal, Sharon F. Diehl, Nadine M. Piatak, Heather A. Lowers,