دورية أكاديمية
Extent of pyrolysis impacts on fast pyrolysis biochar properties.
| العنوان: | Extent of pyrolysis impacts on fast pyrolysis biochar properties. |
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| المؤلفون: | Brewer CE; Iowa State University, Ames, IA, USA. rcbrown@iastate.edu, Hu YY, Schmidt-Rohr K, Loynachan TE, Laird DA, Brown RC |
| المصدر: | Journal of environmental quality [J Environ Qual] 2012 Jul-Aug; Vol. 41 (4), pp. 1115-22. |
| نوع المنشور: | Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
| اللغة: | English |
| بيانات الدورية: | Publisher: Wiley Country of Publication: United States NLM ID: 0330666 Publication Model: Print Cited Medium: Print ISSN: 0047-2425 (Print) Linking ISSN: 00472425 NLM ISO Abbreviation: J Environ Qual Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: 2020- : [Hoboken, NJ] : Wiley Original Publication: Madison, WI : Published cooperatively by American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
| مواضيع طبية MeSH: | Charcoal/*chemistry , Incineration/*methods, Soil/chemistry ; Soil Microbiology ; Temperature ; Time Factors ; Water/chemistry ; Zea mays |
| مستخلص: | A potential concern about the use of fast pyrolysis rather than slow pyrolysis biochars as soil amendments is that they may contain high levels of bioavailable C due to short particle residence times in the reactors, which could reduce the stability of biochar C and cause nutrient immobilization in soils. To investigate this concern, three corn ( L.) stover fast pyrolysis biochars prepared using different reactor conditions were chemically and physically characterized to determine their extent of pyrolysis. These biochars were also incubated in soil to assess their impact on soil CO emissions, nutrient availability, microorganism population growth, and water retention capacity. Elemental analysis and quantitative solid-state C nuclear magnetic resonance spectroscopy showed variation in O functional groups (associated primarily with carbohydrates) and aromatic C, which could be used to define extent of pyrolysis. A 24-wk incubation performed using a sandy soil amended with 0.5 wt% of corn stover biochar showed a small but significant decrease in soil CO emissions and a decrease in the bacteria:fungi ratios with extent of pyrolysis. Relative to the control soil, biochar-amended soils had small increases in CO emissions and extractable nutrients, but similar microorganism populations, extractable NO levels, and water retention capacities. Corn stover amendments, by contrast, significantly increased soil CO emissions and microbial populations, and reduced extractable NO. These results indicate that C in fast pyrolysis biochar is stable in soil environments and will not appreciably contribute to nutrient immobilization. (Copyright © by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc.) |
| المشرفين على المادة: | 0 (Soil) 0 (biochar) 059QF0KO0R (Water) 16291-96-6 (Charcoal) |
| تواريخ الأحداث: | Date Created: 20120704 Date Completed: 20120814 Latest Revision: 20171116 |
| رمز التحديث: | 20240628 |
| DOI: | 10.2134/jeq2011.0118 |
| PMID: | 22751053 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 0047-2425 |
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| DOI: | 10.2134/jeq2011.0118 |