Study on the Application of Fly Ash for Soil Amelioration

Nguyen Ngoc Tu 1 , Trinh Quang Huy 1 , Vo Huu Cong 1 , Nguyen Thi Thu Ha 1 , Dinh Thi Ha 1 and Ho Thi Thuy Hang 1

1Faculty of Natural Resources and the Environment, Vietnam National University of Agriculture, Hanoi 131000, Vietnam
Received: Sep 16, 2021 /
Revised: Sep 30, 2022 /
Published: Sep 30, 2022

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In this study, pot culture experiments were carried out to investigate the most suitable level of fly ash for the amelioration of soil that can enhance the management of fly ash. The fly ash recovered from the Mong Duong 2 coal-fired thermal power plant and had the main chemical composition of oxygen (43%), Si (26%), Al (15%), K (9%), and Fe (6%). The addition of fly ash to light texture soil increased some of the basic properties of the soil, such as moisture, cation exchange capacity, mechanical composition, and organic matter content. The results of the performance evaluation of an experimental crop (soybeans) showed the effects of the amended soil on the growth of the experimental plants, namely the number of fruits, number of nodules, and their dry biomass. The incorporation of manure into the sandy soil was amended with fly ash in the pot experiment as a single application of fly ash may not provide enough nutrients for plant growth despite its ameliorant effect on soil structure. The appropriate fly ash addition rate from 10-30% w/w is recommended in soil amelioration applications based on the results of this study. This research opens up an application direction for fly ash, a by-product generated from the operation of coal-fired power plants in Vietnam.

Keywords: Fly ash, coal-fired, power plants, soil amelioration

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How to Cite
Tu, N., Huy, T., Cong, V., Ha, N., Ha, D., & Hang, H. (2022). Study on the Application of Fly Ash for Soil Amelioration. Vietnam Journal of Agricultural Sciences, 5(3), 1551-1562.


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