干旱区生态环境知识资源中心(Arid): Coal fly ash amendment to mitigate soil water evaporation in arid/semi-arid area: An approach using simple drying focusing on sieve size and temperature

Arid

DOI	10.1016/j.resconrec.2020.104726
	Coal fly ash amendment to mitigate soil water evaporation in arid/semi-arid area: An approach using simple drying focusing on sieve size and temperature
	Song, Mengzhu; Lin, Shenglei; Takahashi, Fumitake
通讯作者	Takahashi, Fumitake
来源期刊	RESOURCES CONSERVATION AND RECYCLING
ISSN	0921-3449
EISSN	1879-0658
出版年	2020
卷号	156
英文摘要	Coal fly ash (FA) utilization as water retention agent to ameliorate soil is attractive in arid/semi-arid area. FA amendment was expected to make void pore networks in soil better for water retention. The purpose of this study is to investigate FA amendment effect on weight-based water holding capacity (WHC) and evaporation mitigation capacity (EMC) of soils and sands. EMC represents water loss mitigation capacity against physical evaporation using drying experiments at room temperature and 40 degrees C. Because this study hypothesized that particle size of soil/sand mainly controls WHC and/or EMC, sieved soil/sand samples were tested. FA amendment effect was significant to increase WHC but much smaller than sieve size effect. On the other hand, statistical tests suggested that FA addition had no significant effect on EMC, which was contrast to sieve size and temperature effects. Significant interaction was also found between sieve size and temperature. Contrast to the initial hypothesis, sieve size effect on EMC was not derived from physical particle size of soil/sand but from organic matters contained in sieved samples. Organic matter concentration had a good correlation with the variation of EMC. In addition, it showed opposite trends at room temperature and 40 degrees C. It means that organic matters mainly control EMC. This study concludes that FA amendment can increase the amount of water remaining water in soil but is not effective to make water retention longer. FA modification using appropriate organic compounds is necessary and it should be designed carefully considering temperature dependency.
英文关键词	Coal fly ash Evaporation mitigation capacity Water holding capacity Soil amendment Sieve size Organic matter
类型	Article
语种	英语
国家	Japan
收录类别	SCI-E
WOS记录号	WOS:000540561100007
WOS关键词	ORGANIC-MATTER ; PHYSICAL-PROPERTIES ; PARTICLE-SIZE ; HYDRAULIC-PROPERTIES ; HOLDING CAPACITY ; IMPACT ; MANAGEMENT ; DISPOSAL ; ORIGIN
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS研究方向	Engineering ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319763
作者单位	Tokyo Inst Technol, Sch Environm & Soc, Global Engn Course Dev Environm & Soc, Midori Ku, 4259 Nagatsuta, Yokohama, Kanagawa 2268503, Japan
推荐引用方式 GB/T 7714	Song, Mengzhu,Lin, Shenglei,Takahashi, Fumitake. Coal fly ash amendment to mitigate soil water evaporation in arid/semi-arid area: An approach using simple drying focusing on sieve size and temperature[J],2020,156.
APA	Song, Mengzhu,Lin, Shenglei,&Takahashi, Fumitake.(2020).Coal fly ash amendment to mitigate soil water evaporation in arid/semi-arid area: An approach using simple drying focusing on sieve size and temperature.RESOURCES CONSERVATION AND RECYCLING,156.
MLA	Song, Mengzhu,et al."Coal fly ash amendment to mitigate soil water evaporation in arid/semi-arid area: An approach using simple drying focusing on sieve size and temperature".RESOURCES CONSERVATION AND RECYCLING 156(2020).