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DOI | 10.2134/jeq2016.12.0478 |
Can Biochar Covers Reduce Emissions from Manure Lagoons While Capturing Nutrients? | |
Dougherty, Brian1,2; Gray, Myles3; Johnson, Mark G.4; Kleber, Markus5,6 | |
发表日期 | 2017-05-01 |
ISSN | 0047-2425 |
卷号 | 46期号:3页码:659-666 |
英文摘要 | The unique physical and chemical properties of biochars make them promising materials for odor, gas, and nutrient sorption. Floating covers made from organic materials (biocovers) are one option for reducing odor and gas emissions from livestock manure lagoons. This study evaluated the potential of floating biochar covers to reduce odor and gas emissions while simultaneously sorbing nutrients from liquid dairy manure. This new approach has the potential to mitigate multiple environmental problems. Two biochars were tested: one made via gasification of Douglas fir chips at 650 degrees C (FC650), and the other made from a mixture of Douglas fir [Pseudotsuga menziesii (Mirb.) Franco] bark and center wood pyrolyzed at 600 degrees C (HF600). The HF600 biocover reduced mean headspace ammonia concentration by 72 to 80%. No significant reduction was found with the FC650 biocover. Nutrient uptake ranged from 0.21 to 4.88 mg N g(-1) biochar and 0.64 to 2.70 mg P g(-1) biochar for the HF600 and FC650 biochars, respectively. Potassium ranged from a loss of 4.52 to a gain of 2.65 mg g(-1) biochar for the FC650 and HF600 biochars, respectively. The biochars also sorbed Ca, Mg, Na, Fe, Al, and Si. In a separate sensory evaluation, judges assessed odor offensiveness and odor threshold of five biocover treatments including four biochars applied over dairy manure. Reductions in mean odor offensiveness and mean odor threshold were observed in three treatments compared with the control. These results show that biochar covers hold promise as an effective practice for reducing odor and gas emissions while sorbing nutrients from liquid dairy manure. |
语种 | 英语 |
WOS记录号 | WOS:000404385100022 |
来源期刊 | JOURNAL OF ENVIRONMENTAL QUALITY |
来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/60660 |
作者单位 | 1.Oregon State Univ, Dep Biol & Ecol Engn, 116 Gilmore Hall, Corvallis, OR 97331 USA; 2.Iowa State Univ, Dep Agr & Biosyst Engn, 1201 Sukup Hall, Ames, IA 50011 USA; 3.Geosyntec Consultants, 621 SW Morrison St,Suite 600, Portland, OR 97205 USA; 4.US EPA, Natl Hlth & Environm Effects Res Lab, 200 SW 35th St, Corvallis, OR 97333 USA; 5.Oregon State Univ, Dep Crop & Soil Sci, Corvallis, OR 97331 USA; 6.Leibniz Zentrum Agrarlandschaftsforsch ZALF, Inst Bodenlandschaftsforsch, Eberswalder Str 84, D-15374 Muncheberg, Germany |
推荐引用方式 GB/T 7714 | Dougherty, Brian,Gray, Myles,Johnson, Mark G.,et al. Can Biochar Covers Reduce Emissions from Manure Lagoons While Capturing Nutrients?[J]. 美国环保署,2017,46(3):659-666. |
APA | Dougherty, Brian,Gray, Myles,Johnson, Mark G.,&Kleber, Markus.(2017).Can Biochar Covers Reduce Emissions from Manure Lagoons While Capturing Nutrients?.JOURNAL OF ENVIRONMENTAL QUALITY,46(3),659-666. |
MLA | Dougherty, Brian,et al."Can Biochar Covers Reduce Emissions from Manure Lagoons While Capturing Nutrients?".JOURNAL OF ENVIRONMENTAL QUALITY 46.3(2017):659-666. |
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