Effect of pyrolysis temperature and heating rate on biochar obtained from pyrolysis of safflower seed press cake

• Published in: Bioresource technology Vol. 128; pp. 593 - 597
• Main Author: ANGIN, Dilek
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01-01-2013; Elsevier
• Subjects: Biochar; Biological and medical sciences; Cakes; Carbon; Carthamus tinctorius - chemistry; Characterization; Charcoal - chemical synthesis; Energy Transfer; Fundamental and applied biological sciences. Psychology; Heating rate; Incineration - methods; Plant Extracts - chemistry; Presses; Pyrolysis; Safflower seed cake; Seeds; Seeds - chemistry; Statistical process control; Surface area; Temperature; Characterization; Pyrolysis; Safflower seed cake; Biochar; Temperature; Heating rate; Compositae; Oilseed cake; Medicinal plant; Carbonization; Carthamus tinctorius; Dicotyledones; Angiospermae; Spermatophyta; Oil plant (vegetal)
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2012.10.150

► High quality biochar can be produced from safflower seed press cake by pyrolysis. ► Temperature has a stronger effect on structure of biochars than heating rate. ► HHV, pH, fixed carbon, ash and carbon contents of biochar increased at 600°C. ► SPC biochar can be used as a chemical feedstock for industrial purpose.
Biochar is carbon-rich product generated from biomass through pyrolysis. In this study, the effects of pyrolysis temperature and heating rate on the yield and physicochemical and morphological properties of biochars obtained from safflower seed press cake were investigated. The results showed that the biochar yield and quality depend principally on the applied temperature where pyrolysis at 600°C leaves a biochar with higher fixed carbon content (80.70%) and percentage carbon (73.75%), and higher heating value (30.27MJkg−1) in comparison with the original feedstock (SPC) and low volatile matter content (9.80%). The biochars had low surface areas (1.89–4.23m2/g) and contained predominantly aromatic compounds. The biochar could be used for the production of activated carbon, in fuel applications, and water purification processes.