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EFFECTS OF PYROLYSIS CONDITIONS ON PHYSICAL PROPERTIES OF CHICKEN MANURE DERIVED BIOCHAR

Maya Rudakova

First published: 2018-06-20https://doi.org/10.5593/sgem2018/6.3/s26.019View metrics

Abstract

Biochar is a product of pyrolysis of biomass such as plant residues, organic wastes or etc. Being highly porous material that slowly releases nutrients, biochar is considered as an effective alternative fertilizer. It is reported that biochar properties are depending on the pyrolysis regime (e.g. pyrolysis peak temperature and duration), however information about quantitative dependences remains poor, especially for biochars made of specific substrates such as chicken manure. In this study, properties of biochars made of two types of chicken manure by different pyrolysis regimes were inverstigated. Three peak temperatures (400, 500 and 600?C) as well as four durations of pyrolysis by that temperatures (1, 2, 3 and 4 h) were used, which summarized in 12 different regimes for each of the manures inverstigated. By means of Brunauer?Emmett?Teller methods (BET) it was demostrated that biochars? surface area ranged between 1 and 12 m2 g-1. It positively correlates with both peak temperature and duration of pyrolysis, while the last one plays a more important role. Using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX), we revealed four types of particles in all the biochars, independent on the pyrosysis regime and had a different origin, porosity, porous structure and C, N, P, K-contents.

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Publication details

Title
EFFECTS OF PYROLYSIS CONDITIONS ON PHYSICAL PROPERTIES OF CHICKEN MANURE DERIVED BIOCHAR
Authors
Maya Rudakova
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Nano, Bio and Green - Technologies for a Sustainable Future
Publisher
STEF92 Technology
Year
2018
Pages
143-150
SWS Citekey
Rudakova201826143150
ISSN
1314-2704
ISBN
978-619-7408-52-2
Language
en
Publication type
Conference Paper
Proceedings contents
Open official contents
Keywords
biocharSEMBETsurface area
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