期刊
WATER AIR AND SOIL POLLUTION
卷 209, 期 1-4, 页码 429-437出版社
SPRINGER INTERNATIONAL PUBLISHING AG
DOI: 10.1007/s11270-009-0211-9
关键词
Mercury; Biomass; Fuel feedstock; Combustion; Leaching; Ash; Slag; Fly ash
资金
- UC Davis-Chevron Joint Research Agreement
An exploratory survey of the mercury content of some common California biomass feedstocks shows that the concentrations are well below EPA toxicity levels with representative feedstock concentrations of 20 ppb for rice straw, 28 ppb for wheat straw, and 32 ppb for whole-tree wood chips. The temporal variability for rice straw (17-20 ppb) is near the analytical uncertainty (similar to 2 ppb). Saline-irrigated feedstock does not contain greatly higher mercury contents (17-38 ppb) compared to normally irrigated feedstock. Water leaching has likewise no detectable effects on mercury mobility, despite an up to 30% increase in the Hg concentrations attributable to mass losses during leaching. Combustion at temperatures of at least 575A degrees C results in complete volatilization of mercury leaving solid ash and slag residuals with mercury contents at or near the lower limit of detection (5 ppb). The mercury strongly concentrated in fly ash can reach concentrations up to 40 times (< 1,166 ppb) the corresponding fuel concentrations.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据