Scholarlink

<p>Real time measurement of geochemical indicators of the leachates generated from mine waste streams, could potentially enable monitoring of the leachate quality, and allow early detection of acid mine drainage (AMD). To that end, the current study explores the potential of an electromagnetic (EM) measurement based approach i.e. time domain reflectometry (TDR) for such an application. A coal mine overburden sample has been subjected to a kinetic leaching column test for 12&#xa0;weeks, and the resulting leachate quality has been assessed through determination of electrical conductivity (EC), pH, total dissolved solids (TDS), and ionic concentration. Simultaneously, TDR measurements have been performed on the leachate samples. An attempt has been made to correlate the TDR trace parameters (i.e. dielectric permittivity and return pulse voltage) to the geochemical indicators (EC, pH, TDS and ionic concentration) of the leachate. Clear trends have been observed for the variation of TDR trace parameters with EC, TDS and ionic concentrations (inverse proportionality). These variations were explained based on the fundamental principles of material–wave interactions and the resulting effects from ions. The theoretical basis for the technology grounded on the principles of geophysics and geochemistry would prevail irrespective of the type of waste generating the leachate.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Time domain reflectometry for assessing geochemistry of leachate from coal mine overburden

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年6月2日

查看全文
  • Harshal Verma,
  • Partha Narayan Mishra,
  • Bappaditya Manna,
  • David Williams

摘要

Real time measurement of geochemical indicators of the leachates generated from mine waste streams, could potentially enable monitoring of the leachate quality, and allow early detection of acid mine drainage (AMD). To that end, the current study explores the potential of an electromagnetic (EM) measurement based approach i.e. time domain reflectometry (TDR) for such an application. A coal mine overburden sample has been subjected to a kinetic leaching column test for 12 weeks, and the resulting leachate quality has been assessed through determination of electrical conductivity (EC), pH, total dissolved solids (TDS), and ionic concentration. Simultaneously, TDR measurements have been performed on the leachate samples. An attempt has been made to correlate the TDR trace parameters (i.e. dielectric permittivity and return pulse voltage) to the geochemical indicators (EC, pH, TDS and ionic concentration) of the leachate. Clear trends have been observed for the variation of TDR trace parameters with EC, TDS and ionic concentrations (inverse proportionality). These variations were explained based on the fundamental principles of material–wave interactions and the resulting effects from ions. The theoretical basis for the technology grounded on the principles of geophysics and geochemistry would prevail irrespective of the type of waste generating the leachate.