Thermal Properties of Biochars Derived from Waste Biomass Generated by Agricultural and Forestry Sectors

Waste residues produced by agricultural and forestry industries can generate energy and are regarded as a promising source of sustainable fuels. Pyrolysis, where waste biomass is heated under low-oxygen conditions, has recently attracted attention as a means to add value to these residues. The material is carbonized and yields a solid product known as biochar. In this study, eight types of biomass were evaluated for their suitability as raw material to produce biochar. Material was pyrolyzed at either 350 °C or 500 °C and changes in ash content, volatile solids, fixed carbon, higher heating value (HHV) and yield were assessed. For pyrolysis at 350 °C, significant correlations (p < 0.01) between the biochars’ ash and fixed carbon content and their HHVs were observed. Masson pine wood and Chinese fir wood biochars pyrolyzed at 350 °C and the bamboo sawdust biochar pyrolyzed at 500 °C were suitable for direct use in fuel applications, as reflected by their higher HHVs, higher energy density, greater fixed carbon and lower ash contents. Rice straw was a poor substrate as the resultant biochar contained less than 60% fixed carbon and a relatively low HHV. Of the suitable residues, carbonization via pyrolysis is a promising technology to add value to pecan shells and Miscanthus.

[1]  A. Sarmah,et al.  Retention and release of diethyl phthalate in biochar-amended vegetable garden soils , 2014, Journal of Soils and Sediments.

[2]  N. Bolan,et al.  Using biochar for remediation of soils contaminated with heavy metals and organic pollutants , 2013, Environmental Science and Pollution Research.

[3]  H. Vervaeren,et al.  Techniques for transformation of biogas to biomethane , 2011 .

[4]  Matthew Owen,et al.  Opportunities, challenges and way forward for the charcoal briquette industry in Sub-Saharan Africa , 2013 .

[5]  A. Kicherer,et al.  Combustion quality of biomass: practical relevance and experiments to modify the biomass quality of Miscanthus x giganteus , 1997 .

[6]  Saran Sohi,et al.  Influence of production conditions on the yield and environmental stability of biochar , 2013 .

[7]  C. Zurbrügg,et al.  Char fuel production in developing countries – A review of urban biowaste carbonization , 2016 .

[8]  Anuradda Ganesh,et al.  Heating value of biomass and biomass pyrolysis products , 1996 .

[9]  J. Nurmi,et al.  HEATING VALUE AND ASH CONTENT OF INTENSIVELY MANAGED STANDS , 2015 .

[10]  Zhaoliang Song,et al.  Effect of 17 years of organic and inorganic fertilizer applications on soil phosphorus dynamics in a rice–wheat rotation cropping system in eastern China , 2015, Journal of Soils and Sediments.

[11]  Hailong Wang,et al.  Effects of biochar amendment on rice growth and nitrogen retention in a waterlogged paddy field , 2014, Journal of Soils and Sediments.

[12]  P. Keyser,et al.  Characterization of biochar from switchgrass carbonization. , 2014 .

[13]  Xing Yang,et al.  Effect of biochar on the extractability of heavy metals (Cd, Cu, Pb, and Zn) and enzyme activity in soil , 2015, Environmental Science and Pollution Research.

[14]  J. O H A N N E S L E H M A N N,et al.  Life Cycle Assessment of Biochar Systems : Estimating the Energetic , Economic , and Climate Change Potential , 2009 .

[15]  Chang-hong Chen,et al.  PM2.5 pollution episode and its contributors from 2011 to 2013 in urban Shanghai, China , 2015 .

[16]  Kunio Yoshikawa,et al.  Characteristics of Biochar Obtained by Hydrothermal Carbonization of Cellulose for Renewable Energy , 2015 .

[17]  Juan Carlos Serrano-Ruiz,et al.  Catalytic Conversion of Biomass to Monofunctional Hydrocarbons and Targeted Liquid-Fuel Classes , 2008, Science.

[18]  S. S. Tambe,et al.  Prediction of Higher Heating Value of Solid Biomass Fuels Using Artificial Intelligence Formalisms , 2013, BioEnergy Research.

[19]  Meng-Shiuh Chang,et al.  Effect of Agricultural Feedstock to Energy Conversion Rate on Bioenergy and GHG Emissions , 2015 .

[20]  Joseph O Akowuah,et al.  Physico-chemical characteristics and market potential of sawdust charcoal briquette , 2012 .

[21]  Ingwald Obernberger,et al.  Concentrations of inorganic elements in biomass fuels and recovery in the different ash fractions , 1997 .

[22]  Qinghai Li,et al.  Pyrolysis Properties of Potential Biomass Fuels in Southwestern China , 2013 .

[23]  Gijsbert Korevaar,et al.  Composting, anaerobic digestion and biochar production in Ghana. Environmental-economic assessment in the context of voluntary carbon markets. , 2014, Waste management.

[24]  P. Thai,et al.  A review of biomass burning: Emissions and impacts on air quality, health and climate in China. , 2017, The Science of the total environment.

[25]  N. Bolan,et al.  Contamination and remediation of phthalic acid esters in agricultural soils in China: a review , 2014, Agronomy for Sustainable Development.

[26]  Weidong Wu,et al.  Unraveling sorption of lead in aqueous solutions by chemically modified biochar derived from coconut fiber: A microscopic and spectroscopic investigation. , 2017, The Science of the total environment.

[27]  Zhengang Liu,et al.  Production of solid biochar fuel from waste biomass by hydrothermal carbonization , 2013 .

[28]  M. Ahmedna,et al.  CHARACTERIZATION OF DESIGNER BIOCHAR PRODUCED AT DIFFERENT TEMPERATURES AND THEIR EFFECTS ON A LOAMY SAND , 2009 .

[29]  J. Chaney.  Combustion characteristics of biomass briquettes , 2010 .

[30]  Shouyu Zhang,et al.  Investigation on cotton stalk and bamboo sawdust carbonization for barbecue charcoal preparation. , 2014, Bioresource technology.

[31]  D. T. Liang,et al.  In-Depth Investigation of Biomass Pyrolysis Based on Three Major Components: Hemicellulose, Cellulose and Lignin , 2006 .

[32]  Danielle D. Bellmer,et al.  Recent advances in utilization of biochar , 2015 .

[33]  Sergio C. Capareda,et al.  Characterization of bio-oil, syn-gas and bio-char from switchgrass pyrolysis at various temperatures , 2012 .

[34]  Hua-gang Huang,et al.  Bioavailability of Cd and Zn in soils treated with biochars derived from tobacco stalk and dead pigs , 2017, Journal of Soils and Sediments.

[35]  Sergio C. Capareda,et al.  Experimental investigation of pyrolysis of rice straw using bench-scale auger, batch and fluidized bed reactors , 2015 .

[36]  Bin Wu,et al.  Multi-objective optimization of biomass to biomethane system , 2016 .

[37]  Stephen Baker,et al.  A Comparison of Producer Gas, Biochar, and Activated Carbon from Two Distributed Scale Thermochemical Conversion Systems Used to Process Forest Biomass , 2013 .

[38]  M. Reza,et al.  Hydrothermal carbonization: Fate of inorganics , 2013 .

[39]  Bala Yamini Sadasivam,et al.  Physical and chemical characterization of waste wood derived biochars. , 2015, Waste management.

[40]  Judith C. Chow,et al.  Impact of biomass burning on haze pollution in the Yangtze River delta, China: a case study in summer 2011 , 2013 .

[41]  Anthony Dufour,et al.  Miscanthus: a fast‐growing crop for biofuels and chemicals production , 2012 .

[42]  Danielle D. Bellmer,et al.  Effects of Biomass Feedstocks and Gasification Conditions on the Physiochemical Properties of Char , 2013 .

[43]  P. Grundmann,et al.  Role of Biogas and Biochar Palm Oil Residues for Reduction of Greenhouse Gas Emissions in the Biodiesel Production , 2015 .

[44]  S. Capareda,et al.  Experimental investigation of torrefaction of two agricultural wastes of different composition using RSM (response surface methodology) , 2015 .

[45]  L. Zulu,et al.  The forbidden fuel: Charcoal, urban woodfuel demand and supply dynamics, community forest management and woodfuel policy in Malawi , 2010 .

[46]  A. Corma,et al.  Synthesis of transportation fuels from biomass: chemistry, catalysts, and engineering. , 2006, Chemical reviews.