Impact of pyrolysis temperature and manure source on physicochemical characteristics of biochar

被引：1111

作者：

Cantrell, Keri B. ^{[1
]}

Hunt, Patrick G. ^{[1
]}

Uchimiya, Minori ^{[2
]}

Novak, Jeffrey M. ^{[1
]}

Ro, Kyoung S. ^{[1
]}

机构：

[1] USDA ARS Coastal Plains Soil Water & Plant Res Ct, Florence, SC 29501 USA

[2] USDA ARS So Reg Res Ctr, New Orleans, LA 70124 USA

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 107卷

关键词：

Bioenergy; Black carbon; Plant nutrients; FTIR; Thermochemical conversion; CHICKEN MANURE; DAIRY-MANURE; NITROGEN; BIOMASS; CONVERSION; FRACTIONS; KINETICS; BEHAVIOR; CHARCOAL; CARBON;

D O I：

10.1016/j.biortech.2011.11.084

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

While pyrolysis of livestock manures generates nutrient-rich biochars with potential agronomic uses, studies are needed to clarify biochar properties across manure varieties under similar controlled conditions. This paper reports selected physicochemical results for five manure-based biochars pyrolyzed at 350 and 700 degrees C: swine separated-solids; paved-feedlot manure; dairy manure; poultry litter; and turkey litter. Elemental and FTIR analyses of these alkaline biochars demonstrated variations and similarities in physicochemical characteristics. The FTIR spectra were similar for (1) turkey and poultry and (2) feedlot and dairy, but were distinct for swine biochars. Dairy biochars contained the greatest volatile matter, C, and energy content and lowest ash, N, and S contents. Swine biochars had the greatest P, N, and S contents alongside the lowest pH and EC values. Poultry litter biochars exhibited the greatest EC values. With the greatest ash contents, turkey litter biochars had the greatest biochar mass recoveries, whereas feedlot biochars demonstrated the lowest. Published by Elsevier Ltd.

引用

页码：419 / 428

页数：10

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