Characterization of Biochars Produced from Cornstovers for Soil Amendment

2010 ◽  
Vol 44 (20) ◽  
pp. 7970-7974 ◽  
Author(s):  
James W. Lee ◽  
Michelle Kidder ◽  
Barbara R. Evans ◽  
Sokwon Paik ◽  
A. C. Buchanan III ◽  
...  
Keyword(s):  
Soil Amendment

scholarly journals Physical characterization of glacial rock flours from fjord deposits in South Greenland – Towards soil amendment

2021 ◽  
Author(s):  
Charles Pesch ◽  
Peter L. Weber ◽  
Per Moldrup ◽  
Lis W. de Jonge ◽  
Emmanuel Arthur ◽  
...  
Keyword(s):  
Soil Amendment ◽  
Physical Characterization

Chemical characterization of rice straw-derived biochar for soil amendment

2012 ◽  
Vol 47 ◽  
pp. 268-276 ◽  
Author(s):  
Weixiang Wu ◽  
Min Yang ◽  
Qibo Feng ◽  
Kim McGrouther ◽  
Hailong Wang ◽  
...  
Keyword(s):  
Rice Straw ◽  
Soil Amendment ◽  
Chemical Characterization

scholarly journals Morphological and physicochemical characterization of biochar produced by gasification of selected forestry species

2017 ◽  
Vol 26 (46) ◽  
Author(s):  
Laura Suárez-Hernández ◽  
Alba N. Ardila-A. ◽  
Rolando Barrera-Zapata
Keyword(s):  
Soil Amendment ◽  
Energy Dispersive Spectrometry ◽  
Physicochemical Characterization ◽  
Eucalyptus Grandis ◽  
Morphological Characteristics ◽  
Gmelina Arborea ◽  
X Ray ◽  
Bet Method ◽  
Gasification Temperature

In this study, biochar samples acquired as by-product by downdraft gasification at 700 °C from Eucalyptus grandis (BC-EG), Acacia magnium (BC-AM) and Gmelina arborea (BC-GA) were characterized. The morphological characteristics and physicochemical properties of biochar were studied using nitrogen physisorption by the Brunauer-Emmet-Teller (BET) method, Scanning Electron Microscopy (SEM), X-ray Energy Dispersive Spectrometry (EDX) and Fourier Transform Infrared Spectroscopy (FTIR). The surface area (SA) of the materials was in the 2.0-50.0 m2/g range, with the biochar obtained from BC-EG showing the highest SA (50.0 m2/g), while the biochar derived from BC-GA showed the lowest SA (2.0 m2/g). In addition, all samples can be classified as mesoporous materials because their pore sizes were between 2 and 50 nm. This indicates that these materials can be used in absorption processes; however, the biochar obtained from BC-AM is expected to be the most suitable for absorption applications. FTIR biochar spectra did not exhibit characteristic peaks for cellulose or hemicellulose in any sample due to decomposition of these compounds at the gasification temperature. Moreover, according to SEM/EDX analyzes, all the samples presented well-defined pore structure and contained minerals as Na, K and Ca, suggesting that the biochar could also be useful for soil amendment applications.

Characterization of bonechar as a soil amendment in tropical soils

2021 ◽  
Vol 5 (2) ◽  
pp. 74-76
Author(s):  
Felipe M Pinheiro ◽  
Vimala D Nair
Keyword(s):  
Soil Amendment ◽  
Tropical Soils

scholarly journals Characterization of sewage sludge generated in Rio de Janeiro, Brazil, and perspectives for agricultural recycling

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2433 ◽  
Author(s):  
Alan Henrique Marques de Abreu ◽  
Paulo Sérgio Dos Santos Leles ◽  
Jorge Makhlouta Alonso ◽  
Elton Luis Da Silva Abel ◽  
Ricardo Rodrigues de Oliveira
Keyword(s):  
Organic Matter ◽  
Sewage Sludge ◽  
Rio De Janeiro ◽  
Soil Amendment ◽  
Agricultural Soils ◽  
The State ◽  
Agricultural Crops ◽  
Potential Demand ◽  
Janeiro State

Sanitary sewage collection and treatment is a serious environmental problem in Brazilian cities, as well as the destination of solid waste resulting from this process, i.e. the sewage sludge, a substance rich in organic matter and nutrients, which is normally discarded in landfills. The aim of this study was to characterize the sewage sludge generated in four treatment stations in Rio de Janeiro State, Brazil and check if they meet the legal criteria of the National Environment Council (CONAMA), Resolution No. 375/2006. It also focused on analyzing the perspectives for its agricultural recycling based on the potential demand for main agricultural crops grown in Rio de Janeiro State. Samples from eight sewage sludge lots from four treatment stations located in the metropolitan area of Rio de Janeiro were analyzed. These stations receive and treat only domestic sewage by activated sludge system. For chemical and biological characterization of these lots, representative samples were collected and analyzed according to parameters of CONAMA Resolution No. 375/2006. In order to analyze the perspectives of agricultural recycling of sewage sludge in Rio de Janeiro State, 10 crops with the largest cultivated area in the state were surveyed and analyzed which of them are apt to receive sewage sludge as fertilizer and/or soil amendment. To determine the potential demand for sewage sludge in agriculture, the area occupied by these crops were multiplied by each fertilizer recommendation considering the sewage sludge as fertilizer. The analyzed sludge presented a high content of nutrients and organic matter and was included in the parameters of heavy metals, pathogenic agents, and bacteriological indicators stipulated by CONAMA Resolution No. 375/2006. The agricultural panorama of Rio de Janeiro State is favorable for agricultural recycling of sewage sludge since there is a great potential demand for this residue and, among the 10 agricultural crops with the largest cultivated area in the state, sludge can be used as fertilizer or soil amendment in eight of them. The implementation of a State Sewage Sludge Recycling Program could dispose of this material in a more sustainable way, as well as improve the quality of agricultural soils and reduce costs with chemical fertilizers, bringing positive results for sanitation companies and producers.

scholarly journals Biogenic, sedimentary, and metamorphic limestone: a comparative characterization of soil amendment

Revista CERES ◽  
2019 ◽  
Vol 66 (1) ◽  
pp. 63-71 ◽  
Author(s):  
Maria Maiara Cazotti ◽  
Liovando Marciano da Costa ◽  
Paulo Roberto Cecon
Keyword(s):  
Chemical Composition ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Soil Amendment ◽  
Acid Soils ◽  
Agricultural Activity ◽  
Comparative Characterization ◽  
Liming Material

ABSTRACT Liming acid soils is fundamental for agricultural activity such as the study and characterization of alternative liming material. The objective of this study was to characterize biological, sedimentary, and metamorphic limestones. The following limestones were studied: biogenic (BL), sedimentary (SL), commercial (CL), and marble (ML). This study evaluated total relative neutralizing power (TRNP), chemical composition, specific surface area, and Ca2+and Mg2+release at concentrations of 0.10, 0.50, 1.00, and 2.00 mol L-1 HCl, in addition to the effects on the soil 90 days after limestone application. The Si identified contributed to the lower TRNP of BL (73.7%) and CL (74.4%). At the lowest HCl concentrations, BL was the most reactive, but with an increase in concentration, ML became the most reactive. The highest CaO (58.32%) and MgO (13.05%) levels were observed in SL and ML, respectively, which contained the highest Ca2+(3.95 cmolcdm-3) and Mg2+ (1.09 cmolcdm-3) concentrations when applied to the soil. All the limestones increased pH and lowered soil H+Al. Soil Ca2+and Mg2+were influenced by the composition of the amendments.

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