Laboratory tests on arsenic leaching from excavated shale rock by elevated temperatures
Laboratory tests on arsenic leaching from excavated shale rock by elevated temperatures
复制标题
高温从页岩中浸出砷的实验室测试
DOI：
10.1051/e3sconf/202020509006
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Lincoln W. Gathuka and Takeshi Katsumi
中科院分区：
文献类型：
--
作者：
Atsushi Takai;Yusuke Iwata;Lincoln W. Gathuka and Takeshi Katsumi
本文研究了页岩中砷在不同温度下的浸出规律。在日本，非常鼓励利用地质污染的土壤和岩石进行建设，如筑堤。因此，在应用热能储存和地源热泵等与地温变化有关的热活性地质系统时，我们需要了解其对此类受污染地质材料的沥滤行为的影响。在这项研究中，浸出的化学品从一个挖掘的页岩岩石含有地质砷进行了评估，使用摇动和非摇动批次测试。在这些实验中，采用了最高达40 ℃的不同温度和6-360小时的接触时间。总体而言，它被发现，更多的砷浸出与高温下，其浓度显着较高的非振荡条件下。此外，在非振荡条件下，其浓度在40 ºC下最高，接触时间为360 h，由此约为100 g/L。0.06浸出率为0.01mg/L，是日本允许值0.01mg/L的6倍。
This manuscript focuses on the leaching of geogenic arsenic (As) from shale rock at different temperatures. In Japan, the utilisation of geogenic contaminated soils and rocks for construction such as in embankment is much encouraged. Therefore, when applying thermally active geo-systems such as thermal energy storage and ground-source heat pump, which are associated with ground temperature changes, we need to know its impact on the leaching behaviour of such contaminated geomaterials. In this study, the leaching of chemicals from an excavated shale rock containing geogenic As was assessed using a shaking and non-shaking batch test. In those experiments, different temperatures up to 40 ºC and contact times ranging from 6–360 h were employed. Overall, it was found out that more As was leached with elevated temperatures and its concentration was notably higher under the non-shaking condition. Further, under the non-shaking condition, its concentration was highest at 40 ºC with contact time of 360 h, whereby ca. 0.06 mg/L As was leached, which is 6 times the permissible limit of 0.01 mg/L in Japan.
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DOI：
10.4172/2157-7617.1000269
发表时间：
2015
期刊：
Journal of Earth Science & Climatic Change
影响因子：
--
作者：
Panagiotaras;and Nikolopoulos
通讯作者：
and Nikolopoulos
影响因子：
3.6
作者：
Alam, M. R.;Zain, M. F. M.;Jamil, M.
通讯作者：
Jamil, M.
淋滤+胶结法净化铅污染土壤~处理工艺的思考~
DOI：
--
发表时间：
2007
期刊：
影响因子：
--
作者：
Fengjun DUAN;Hajime YAMAGUCHI;Daisuke KITAZAWA;Makoto KAWABUCHI;Shojiro Ishibashi;Shojiro Ishibashi;石橋 正二郎;Shojiro Ishibahsi;Shojiro Ishibashi;Shojiro Ishibashi;石橋 正二郎;石橋 正二郎;石橋 正二郎;石橋 正二郎;石橋 正二郎;高田政雄;M.Ito;高田政雄;高田政雄
通讯作者：
高田政雄
砷酸钙在 23 /-1 °C 下的稳定性。
影响因子：
13.6
作者：
Bothe;Brown
通讯作者：
Brown