14
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      The forms of alkalis in the biochar produced from crop residues at different temperatures.

      Bioresource Technology
      Agriculture, methods, Alkalies, analysis, chemistry, Charcoal, chemical synthesis, Crops, Agricultural, Heating, Industrial Waste, prevention & control, Oxygen, Temperature

      Read this article at

      ScienceOpenPublisherPubMed
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          The forms of alkalis of the biochars produced from the straws of canola, corn, soybean and peanut at different temperatures (300, 500 and 700°C) were studied by means of oxygen-limited pyrolysis. The alkalinity and pH of the biochars increased with increased pyrolysis temperature. The X-ray diffraction spectra and the content of carbonates of the biochars suggested that carbonates were the major alkaline components in the biochars generated at the high temperature; they were also responsible for the strong buffer plateau-regions on the acid-base titration curves at 500 and 700°C. The data of FTIR-PAS and zeta potentials indicated that the functional groups such as -COO(-) (-COOH) and -O(-) (-OH) contained by the biochars contributed greatly to the alkalinity of the biochar samples tested, especially for those generated at the lower temperature. These functional groups were also responsible for the negative charges of the biochars. Copyright © 2010 Elsevier Ltd. All rights reserved.

          Related collections

          Author and article information

          Journal
          21112777
          10.1016/j.biortech.2010.11.018

          Chemistry
          Agriculture,methods,Alkalies,analysis,chemistry,Charcoal,chemical synthesis,Crops, Agricultural,Heating,Industrial Waste,prevention & control,Oxygen,Temperature

          Comments

          Comment on this article