مورد إلكتروني
Early-stage anaerobic zone formation by organic eluate from wood in soil
| العنوان: | Early-stage anaerobic zone formation by organic eluate from wood in soil |
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| بيانات النشر: | Elsevier B.V. 2022-02-05 |
| تفاصيل مُضافة: | Asakura, Hiroshi Nakagawa, Kei Endo, Kazuto |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | When separated soil (SS) generated from the Great East Japan Earthquake, which contains woodchips and others (WC), is utilized as ground material, microorganisms decompose the organic carbon in WC, and oxygen is consumed in the process. This reaction results in forming an anaerobic zone and generating methane gas. To effectively utilize SS as ground material, it is necessary to prevent anaerobic zone formation to ensure safety. This study clarified the relationship between WC content and the concentration of leached organic carbon (TOC) and the relationship between TOC concentration in the eluate and the oxygen consumption rate were clarified. We obtained the relationship between WC content and the extent of anaerobic zone formation from the results,. The anaerobic zone is formed below the oxygen penetration depth (LO2). LO2 rapidly decreases as the WC weight ratio increases from 0 to 1 w%, and LO2 is almost constant, i.e., around 1 to 2 m above 1 w% WC weight ratio. An increase in WC weight ratio does not significantly decrease LO2 determined by the aerobic decomposition of the solution. From the above, contamination with WC should be limited to 1 w% or less to prevent the formation of an anaerobic zone. If SS has WC above 1 w%, it is required to put a ventilating layer such as crushed stone every few meters or the other countermeasures when SS is utilized as ground material. Soils and Foundations, 62 (2), art. no. 101109; 2022 |
| مصطلحات الفهرس: | Keywords, Woodchip, Separated soil, Organic carbon, Oxygen consumption rate, Anaerobic zone, Methane gas, Journal Article, VoR |
| URL: | |
| الإتاحة: | Open access content. Open access content © 2022 Published by Elsevier B.V. on behalf of Japanese Geotechnical Society. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/). |
| ملاحظة: | application/pdf English |
| أرقام أخرى: | JPNII oai:irdb.nii.ac.jp:01160:0005233581 00380806 Soils and Foundations, 62(2), 101109- 1375191163 |
| المصدر المساهم: | NATIONAL INST OF INFO From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1375191163 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |