Factors Affecting Leaching Behavior of Nitrification Products from Diatomaceous Mudstone by Column Experiments
Horonobe Underground Research Center， located in northern Hokkaido， Japan， has been excavating shafts of underground research laboratory for R&D of radioactive waste disposal. In this site， the groundwater seepage from the shafts and leachate from the waste rock storage site contain high concent...
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| Veröffentlicht in: | Journal of MMIJ 2014/02/01, Vol.130(2_3), pp.60-64 |
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| container_title | Journal of MMIJ |
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| creator | IGARASHI, Toshifumi UEDA, Takahiro HOKORA, Hideyuki JO, Mayumi KATO, Kinya MISHIRO, Masataka KUDO, Hajime |
| description | Horonobe Underground Research Center， located in northern Hokkaido， Japan， has been excavating shafts of underground research laboratory for R&D of radioactive waste disposal. In this site， the groundwater seepage from the shafts and leachate from the waste rock storage site contain high concentrations of total nitrogen. Ammoniumnitrogen， the major chemical species of nitrogen in the seepage and leachate， has been treated by the effluent treatment facility. However， the ammonium-nitrogen is transformed to nitrite- and nitrate-nitrogen (nitrification products) by nitrification. As a result， the concentrations of total nitrogen increase to the effluent guideline due to nitrification. Therefore， column experiments were carried out to understand the phenomena and the factors affecting the leaching behavior of nitrification products. The result showed that the nitrification was inhibited when the column layer was almost saturated， and that the nitrification occurred near the surface of waste rocks， in particular， at 25℃. These results indicate that nitrification can be mitigated by controlling the hydrological conditions in the waste rock storage site. |
| doi_str_mv | 10.2473/journalofmmij.130.60 |
| format | Article |
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In this site， the groundwater seepage from the shafts and leachate from the waste rock storage site contain high concentrations of total nitrogen. Ammoniumnitrogen， the major chemical species of nitrogen in the seepage and leachate， has been treated by the effluent treatment facility. However， the ammonium-nitrogen is transformed to nitrite- and nitrate-nitrogen (nitrification products) by nitrification. As a result， the concentrations of total nitrogen increase to the effluent guideline due to nitrification. Therefore， column experiments were carried out to understand the phenomena and the factors affecting the leaching behavior of nitrification products. The result showed that the nitrification was inhibited when the column layer was almost saturated， and that the nitrification occurred near the surface of waste rocks， in particular， at 25℃. These results indicate that nitrification can be mitigated by controlling the hydrological conditions in the waste rock storage site.</description><identifier>ISSN: 1881-6118</identifier><identifier>EISSN: 1884-0450</identifier><identifier>DOI: 10.2473/journalofmmij.130.60</identifier><language>eng ; jpn</language><publisher>Tokyo: The Mining and Materials Processing Institute of Japan</publisher><subject>Column Experiment ; Diatomaceous Mudstone ; Effluents ; Horonobe Underground Research Center ; Leachates ; Leaching ; Nitrification ; Rock ; Seepage ; Underground ; Wastes</subject><ispartof>Journal of MMIJ, 2014/02/01, Vol.130(2_3), pp.60-64</ispartof><rights>2014 The Mining and Materials Processing Institute of Japan</rights><rights>Copyright Japan Science and Technology Agency 2014</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c2190-2cd40fa504e0c7514b06c76a377288342984b1291baee9ca1d32e02f71bac5823</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1883,27924,27925</link.rule.ids></links><search><creatorcontrib>IGARASHI, Toshifumi</creatorcontrib><creatorcontrib>UEDA, Takahiro</creatorcontrib><creatorcontrib>HOKORA, Hideyuki</creatorcontrib><creatorcontrib>JO, Mayumi</creatorcontrib><creatorcontrib>KATO, Kinya</creatorcontrib><creatorcontrib>MISHIRO, Masataka</creatorcontrib><creatorcontrib>KUDO, Hajime</creatorcontrib><title>Factors Affecting Leaching Behavior of Nitrification Products from Diatomaceous Mudstone by Column Experiments</title><title>Journal of MMIJ</title><addtitle>J.MMIJ</addtitle><description>Horonobe Underground Research Center， located in northern Hokkaido， Japan， has been excavating shafts of underground research laboratory for R&D of radioactive waste disposal. In this site， the groundwater seepage from the shafts and leachate from the waste rock storage site contain high concentrations of total nitrogen. Ammoniumnitrogen， the major chemical species of nitrogen in the seepage and leachate， has been treated by the effluent treatment facility. However， the ammonium-nitrogen is transformed to nitrite- and nitrate-nitrogen (nitrification products) by nitrification. As a result， the concentrations of total nitrogen increase to the effluent guideline due to nitrification. Therefore， column experiments were carried out to understand the phenomena and the factors affecting the leaching behavior of nitrification products. The result showed that the nitrification was inhibited when the column layer was almost saturated， and that the nitrification occurred near the surface of waste rocks， in particular， at 25℃. These results indicate that nitrification can be mitigated by controlling the hydrological conditions in the waste rock storage site.</description><subject>Column Experiment</subject><subject>Diatomaceous Mudstone</subject><subject>Effluents</subject><subject>Horonobe Underground Research Center</subject><subject>Leachates</subject><subject>Leaching</subject><subject>Nitrification</subject><subject>Rock</subject><subject>Seepage</subject><subject>Underground</subject><subject>Wastes</subject><issn>1881-6118</issn><issn>1884-0450</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNptkc1OGzEURkcVSAXaN2BhqRs2k17_zNizpCnQVil0UdaW41wTRzN2ansQvD2TJkKi6up-ujrHsv1V1TmFGROSf97EMQXTRzcMfjOjHGYtvKtOqFKiBtHA0d9M65ZS9b46zXkD0HbQqJMqXBtbYsrk0jm0xYcHskBj17vwBdfm0cdEoiO3viTvvDXFx0B-pbgabcnEpTiQr96UOBiLcczk57jKJQYky2cyj_04BHL1tMXkBwwlf6iOnekzfjzMs-r--ur3_Fu9uLv5Pr9c1JbRDmpmVwKcaUAgWNlQsYTWytZwKZlSXLBOiSVlHV0axM4auuIMgTk5LWyjGD-rLvbnblP8M2IuevDZYt-bsLulpgoUpZRLNaGf_kEP3zlRsmkbwSQTEyX2lE0x54ROb6cnmfSsKehdCfpNCXoqQbcwaT_22iYX84CvkknF2x7_IzHND_IrZNcmaQz8BeSmmuY</recordid><startdate>20140201</startdate><enddate>20140201</enddate><creator>IGARASHI, Toshifumi</creator><creator>UEDA, Takahiro</creator><creator>HOKORA, Hideyuki</creator><creator>JO, Mayumi</creator><creator>KATO, Kinya</creator><creator>MISHIRO, Masataka</creator><creator>KUDO, Hajime</creator><general>The Mining and Materials Processing Institute of Japan</general><general>Japan Science and Technology Agency</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20140201</creationdate><title>Factors Affecting Leaching Behavior of Nitrification Products from Diatomaceous Mudstone by Column Experiments</title><author>IGARASHI, Toshifumi ; UEDA, Takahiro ; HOKORA, Hideyuki ; JO, Mayumi ; KATO, Kinya ; MISHIRO, Masataka ; KUDO, Hajime</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2190-2cd40fa504e0c7514b06c76a377288342984b1291baee9ca1d32e02f71bac5823</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng ; jpn</language><creationdate>2014</creationdate><topic>Column Experiment</topic><topic>Diatomaceous Mudstone</topic><topic>Effluents</topic><topic>Horonobe Underground Research Center</topic><topic>Leachates</topic><topic>Leaching</topic><topic>Nitrification</topic><topic>Rock</topic><topic>Seepage</topic><topic>Underground</topic><topic>Wastes</topic><toplevel>online_resources</toplevel><creatorcontrib>IGARASHI, Toshifumi</creatorcontrib><creatorcontrib>UEDA, Takahiro</creatorcontrib><creatorcontrib>HOKORA, Hideyuki</creatorcontrib><creatorcontrib>JO, Mayumi</creatorcontrib><creatorcontrib>KATO, Kinya</creatorcontrib><creatorcontrib>MISHIRO, Masataka</creatorcontrib><creatorcontrib>KUDO, Hajime</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of MMIJ</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>IGARASHI, Toshifumi</au><au>UEDA, Takahiro</au><au>HOKORA, Hideyuki</au><au>JO, Mayumi</au><au>KATO, Kinya</au><au>MISHIRO, Masataka</au><au>KUDO, Hajime</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Factors Affecting Leaching Behavior of Nitrification Products from Diatomaceous Mudstone by Column Experiments</atitle><jtitle>Journal of MMIJ</jtitle><addtitle>J.MMIJ</addtitle><date>2014-02-01</date><risdate>2014</risdate><volume>130</volume><issue>2_3</issue><spage>60</spage><epage>64</epage><pages>60-64</pages><issn>1881-6118</issn><eissn>1884-0450</eissn><abstract>Horonobe Underground Research Center， located in northern Hokkaido， Japan， has been excavating shafts of underground research laboratory for R&D of radioactive waste disposal. In this site， the groundwater seepage from the shafts and leachate from the waste rock storage site contain high concentrations of total nitrogen. Ammoniumnitrogen， the major chemical species of nitrogen in the seepage and leachate， has been treated by the effluent treatment facility. However， the ammonium-nitrogen is transformed to nitrite- and nitrate-nitrogen (nitrification products) by nitrification. As a result， the concentrations of total nitrogen increase to the effluent guideline due to nitrification. Therefore， column experiments were carried out to understand the phenomena and the factors affecting the leaching behavior of nitrification products. The result showed that the nitrification was inhibited when the column layer was almost saturated， and that the nitrification occurred near the surface of waste rocks， in particular， at 25℃. These results indicate that nitrification can be mitigated by controlling the hydrological conditions in the waste rock storage site.</abstract><cop>Tokyo</cop><pub>The Mining and Materials Processing Institute of Japan</pub><doi>10.2473/journalofmmij.130.60</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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| source | J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese; EZB-FREE-00999 freely available EZB journals |
| subjects | Column Experiment Diatomaceous Mudstone Effluents Horonobe Underground Research Center Leachates Leaching Nitrification Rock Seepage Underground Wastes |
| title | Factors Affecting Leaching Behavior of Nitrification Products from Diatomaceous Mudstone by Column Experiments |
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