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Pyrolysis

About: Pyrolysis is a research topic. Over the lifetime, 34918 publications have been published within this topic receiving 833524 citations.


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Journal ArticleDOI
TL;DR: The pyrolysis speciation revealed the competitive nature of the primary reactions and accelerated the reactions that led to the formation of low molecular weight species from cellulose as compared to those leading to anhydro sugars.

690 citations

Journal ArticleDOI
01 Jun 1996-Fuel
TL;DR: In this paper, the authors used both a thermogravimetric analyser and a packed-bed pyrolyser to investigate the relationship between pyrolyses of isolated biomass components and the composition of the biomass.

673 citations

Journal ArticleDOI
16 Apr 2013-Agronomy
TL;DR: A review of biochar-N research can be found in this paper, where the authors established emerging trends and gaps in biochar N research, as well as the long-term practical effectiveness of inorganic-N adsorption as a NO3 − leaching mitigation option, requires further study.
Abstract: Interest in biochar stems from its potential agronomic benefits and carbon sequestration ability. Biochar application alters soil nitrogen (N) dynamics. This review establishes emerging trends and gaps in biochar-N research. Biochar adsorption of NO3 − , up to 0.6 mg g −1 biochar, occurs at pyrolysis temperatures >600 °C with amounts adsorbed dependent on feedstock and NO3 − concentration. Biochar NH4 + adsorption depends on feedstock, but no pyrolysis temperature trend is apparent. Long-term practical effectiveness of inorganic-N adsorption, as a NO3 − leaching mitigation option, requires further study. Biochar adsorption of ammonia (NH3) decreases NH3 and NO3 − losses during composting and after manure applications, and offers a mechanism for developing slow release fertilisers. Reductions in NH3 loss vary with N source and biochar characteristics. Manure derived biochars have a role as N fertilizers. Increasing pyrolysis temperatures, during biochar manufacture from manures and biosolids, results in biochars with decreasing hydrolysable organic N and increasing aromatic and heterocyclic structures. The short- and long-term implications of biochar on N immobilisation and mineralization are specific to individual soil-biochar combinations and further systematic studies are required to predict agronomic and N cycling responses. Most nitrous oxide (N2O) studies measuring nitrous

671 citations

Journal ArticleDOI
TL;DR: In this paper, an empirical model for the stoichiometry of biomass pyrolysis is presented, where empirical parameters are introduced to close the conservation equations describing the process, and the prediction capability of the model is briefly addressed, with the results showing that the yields of volatiles released from a specific biomass are predicted with a reasonable accuracy.

671 citations

Journal ArticleDOI
TL;DR: The results suggest that the properties attributable to the surface functional groups of biochars control the heavy metal sequestration ability in Norfolk soil, and biochar selection for soil amendment must be made case-by-case based on the biochar characteristics, soil property, and the target function.
Abstract: While a large-scale soil amendment of biochars continues to receive interest for enhancing crop yields and to remediate contaminated sites, systematic study is lacking in how biochar properties translate into purported functions such as heavy metal sequestration. In this study, cottonseed hulls were pyrolyzed at five temperatures (200, 350, 500, 650, and 800 °C) and characterized for the yield, moisture, ash, volatile matter, and fixed carbon contents, elemental composition (CHNSO), BET surface area, pH, pHpzc, and by ATR-FTIR. The characterization results were compared with the literature values for additional source materials: grass, wood, pine needle, and broiler litter-derived biochars with and without post-treatments. At respective pyrolysis temperatures, cottonseed hull chars had ash content in between grass and wood chars, and significantly lower BET surface area in comparison to other plant source materials considered. The N:C ratio reached a maximum between 300 and 400 °C for all biomass sources ...

664 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20241
20233,262
20226,570
20212,345
20202,434
20192,411