Application of a mixture of fly ash and topsoil for rehabilitation in open-pit coal mines in south east Asian countries

A. Hamanaka, S. Matsumoto, K. Murakami, H. Shimada, T. Sasaoka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Rehabilitation of post-mine land in open-pit coal mines is necessary for sustainable development of coal. Although topsoil containing much nutrition should be secured for plant growth, there was the shortage and the erosion of topsoil by heavy rain in the tropical climate, especially in South East Asian countries. Therefore, in this study, the application of Fly Ash (FA) to topsoil was evaluated in terms of the growth of plants with Acacia mangium, aiming at securing topsoil in open-pit coal mines. As the result of the plant experiment, the inhibition of plant growth attributing to the dissolution of Aluminum (Al) from FA was observed. The growth rate of the plants was decreased at the mixing ratio of more than 40% of FA. Thus, topsoil can be secured by mixing FA in topsoil in consideration of the mixing ratio, contributing to the successful rehabilitation of post-mine land in open-pit coal mine.

Original languageEnglish
Title of host publicationLand Reclamation in Ecological Fragile Areas - Proceedings of the 2nd International Symposium on Land Reclamation and Ecological Restoration, LRER 2017
EditorsZhenqi Hu
PublisherCRC Press/Balkema
Pages233-237
Number of pages5
ISBN (Print)9781138051034
Publication statusPublished - Jan 1 2017
Event2nd International Symposium on Land Reclamation and Ecological Restoration, LRER 2017 - Xi’an, China
Duration: Oct 20 2017Oct 23 2017

Publication series

NameLand Reclamation in Ecological Fragile Areas - Proceedings of the 2nd International Symposium on Land Reclamation and Ecological Restoration, LRER 2017

Other

Other2nd International Symposium on Land Reclamation and Ecological Restoration, LRER 2017
CountryChina
CityXi’an
Period10/20/1710/23/17

All Science Journal Classification (ASJC) codes

  • Pollution
  • Geotechnical Engineering and Engineering Geology
  • Management, Monitoring, Policy and Law
  • Environmental Engineering

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  • Cite this

    Hamanaka, A., Matsumoto, S., Murakami, K., Shimada, H., & Sasaoka, T. (2017). Application of a mixture of fly ash and topsoil for rehabilitation in open-pit coal mines in south east Asian countries. In Z. Hu (Ed.), Land Reclamation in Ecological Fragile Areas - Proceedings of the 2nd International Symposium on Land Reclamation and Ecological Restoration, LRER 2017 (pp. 233-237). (Land Reclamation in Ecological Fragile Areas - Proceedings of the 2nd International Symposium on Land Reclamation and Ecological Restoration, LRER 2017). CRC Press/Balkema.