Utilization of coal fly ash as a component of horticultural substrates

摘要：

The current article reviews the physical and chemical properties of coal fly ash and horticultural substrates and proposes that fly ash amendment to horticultural substrates could represent a new market for the beneficial use of this neglected industry waste. A horticultural substrate is any material or a combination of materials used to provide support, water retention, aeration, and/or nutrient holding capacity for plant growth. Since fly ash possesses alkalinity and contains many essential nutrients and initial formulated horticultural substrates, on other hand, have low pH and low fertility, amending fly ash to horticultural substrates could create synergic effects for crop production. It is estimated that more than one billion cubic meters of horticultural substrates are used annually around the world; fly ash amendment to horticultural substrates at 15 to 20kg per cubic meter armually should sig- nificantly reduce this hazardous material in our environment.

关键词： Fly ash heavy metals horticultural substrates

作者: Q. Li J. Chen Y. Li

作者单位: University of Florida, IFAS, Mid-Florida Research and Education Center, 2725 Binion Road, Apopka, FL University of Florida, IFAS, Tropical Research and Education Center, Homestead, FL 33031, USA

会议类型: 国际会议

会议名称: 第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)

会议地点: 北京

会议语种:英文

页码: 366-367

在线出版日期: 2007-07-15（万方平台首次上网日期，不代表论文的发表时间）