在柱体实验中,从挖掘的热水变化岩石中释放的缩放效应
Xun Du1, Toru Inui2, Sho Ogata2
1Department of Civil Engineering, Division of Global Architecture, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka, 565-0871, Japan. u043404c@ecs.osaka-u.ac.jp.
Environmental science and pollution research international
|November 14, 2023
概括
从热水变化的岩石中 (As) 泄漏是令人担忧的. 颗粒大小和岩层厚度显著影响As释放,较厚的层减少了由于对矿物质吸附的增强而导致的透性.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 土壤科学 土壤科学
背景情况:
- 来自日本建筑工地的热水变化岩石由于 (As) 释放超过监管限制,造成环境风险.
- 评估 由于漂水对于环境影响评估和制策略至关重要.
- 现有的柱子漏协议缺乏标准化,特别是在粒子大小和柱子尺寸缩放效应方面.
研究的目的:
- 通过柱体透实验,研究粒子大小和岩层厚度对从热水变化的岩石中出水的影响.
- 在环境风险评估中建立可靠的协议来评估泄漏.
主要方法:
- 柱体透实验是使用具有两个不同的颗粒大小范围和岩层厚度的热水变化岩石进行的.
- 测量包括pH值,特定表面积 (SSA),度和的可泄漏性.
主要成果:
- pH与特定表面积 (SSA) 和岩层厚度与H+度成正比.
- 的度和可溶性与SSA.相称.
- 岩层厚度的增加并没有显著影响As度,但由于对Fe/Al氧化/氧化物增强吸附而显著降低了As的浸出性.
结论:
- 特定的表面积和岩层厚度是影响出水行为的关键因素.
- 较厚的岩层促进的吸附,减少对环境的释放.
- 这些发现对于设计有效的封闭策略和改进环境风险评估的柱子浸出实验协议至关重要.
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