Use of Biochar Produced from Elephant Grass by Pyrolysis in a Screw Reactor as a Soil Amendment

被引：57

作者：

Ferreira, Suelem Daiane ^{[1
]}

Manera, Christian ^{[2
]}

Silvestre, Wendel Paulo ^{[2
,3
]}

Pauletti, Gabriel Fernandes ^{[3
]}

Altafini, Carlos Roberto ^{[4
]}

Godinho, Marcelo ^{[2
]}

机构：

[1] Fed Univ Rio Grande do Sul UFRGS, Postgrad Program Min Met & Mat Engn PPGE3M, BR-91501970 Porto Alegre, RS, Brazil

[2] Univ Caxias do Sul UCS, Postgrad Program Engn Proc & Technol PGEPROTEC, BR-95070560 Caxias Do Sul, RS, Brazil

[3] Univ Caxias do Sul UCS, Agron Course, BR-95070560 Caxias Do Sul, RS, Brazil

[4] Univ Caxias do Sul UCS, Postgrad Program Mech Engn PPGMEC, BR-95070560 Caxias Do Sul, RS, Brazil

来源：

WASTE AND BIOMASS VALORIZATION | 2019年 / 10卷 / 10期

关键词：

Biochar; Screw reactor; Elephant grass; Soil amendment; BIO-OIL; ACTIVATED CARBON; BIOMASS; TEMPERATURE; CONVERSION; FEEDSTOCK; CELLULOSE; ENERGY; GAS; SEQUESTRATION;

D O I：

10.1007/s12649-018-0347-1

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study was carried out to evaluate the agronomic potential of elephant grass biomass (Pennisetum purpureum Schum) biochar obtained through slow pyrolysis using a semi-continuous pilot screw reactor in the absence of a carrier gas, and under different conditions. The biomass was pyrolyzed with temperature ranging between 400 and 600 degrees C. The products (biogas/biochar/bio-oil) yields were evaluated. With increasing temperature, there was a decrease in biochar yield, however, the bio-oil yield was relatively constant. Different physicochemical properties of the biochar were evaluated, and the biochar was incubated in the soil for 60 days. After the incubation period the mixture of soil and biochar underwent analysis to determine soil fertility. The biochar produced presented an elevated content of micro and macronutrients, as well as high pH. Agronomic tests showed that biochar presented great potential to be used as an auxiliary liming agent, and as a fertilizer.

引用

页码：3089 / 3100

页数：12

共 57 条

[1] Suitability of Biochar Produced from Biomass Waste as Soil Amendment [J].