搜索结果: 1-5 共查到“农学总论 recovery”相关记录5条 . 查询时间(0.046 秒)
Composting of Disposal Organic Wastes: Resource Recovery for Agricultural Sustainability
composting resource recovery management soil improvement
2009/11/16
One of the major problems of agricultural soils in the tropical regions of the Pacific is the low organic matter content. Because of the hot and humid environment, the soil organic matter (SOM) is min...
Towards environmentally safe recovery of platinum from scrap automotive catalytic converters
Platinum recovery catalytic converter aqua regia HCl: H2O2 solution
2010/3/17
Dissolution of platinum that is incorporated in automotive catalytic converters is performed through chemical methods, which generate a large amount of secondary chemical waste that is hazardous to th...
MASS REDUCTION AND RECOVERY OF NUTRIENTS THROUGH VERMICOMPOSTING OF FLY ASH
mass reduction nutrient fly ash
2010/3/25
In view of the environmental problems generated by large-scale production of fly ash,
increasing attention is now being paid to the recycling of fly ash as a good source of nutrients. Because availab...
united states department of agriculture Provides More Than $42.5 Million For Additional Natural Disaster Recovery
natural disaster funds
2007/1/18
WASHINGTON, Jan. 16, 2007-Agriculture Secretary Mike Johanns today announced that an additional $42.5 million will be provided to help with natural disaster recovery efforts in 13 states. This funding...
EXPOSURE TO MICROORGANISMS AND HEALTH EFFECTS OF WORKING IN UK MATERIALS RECOVERY FACILITIES - A PRELIMINARY REPORT
waste management materials recovery facilities recycling
2010/12/27
The aim of this research was to identify issues concerning air quality and health effects associated with organic dusts and related to household waste recycling within two Materials Recovery Facilitie...