Ultrasonic-Assisted Pelleting of Sorghum Stalk: Predictive Models for Pellet Density and Durability Using Multiple Response Surface Methodology

In the field of renewable energy, feedstock such as cellulosic biomass has been proposed as a renewable source of fuel to produce energy. However, the use of raw biomass as feedstock causes high costs in handling, transportation, and storage. Compressing raw cellulosic biomass into pellets significantly increases the density and durability of cellulosic biomass, reducing the transportation and handling costs of feedstock. To ensure high pellet quality, high pellet density and durability are desired during a compressing process. In this study, ultrasonic vibration-assisted (UV-A) pelleting, as a novel pelleting method, was applied to measure pellet density and durability during experiments. Response surface methodology (RSM) was employed to investigate the effects of pelleting time, ultrasonic power, and pelleting pressure on the pellet density and pellet durability. The model was validated by comparing the predictive results with experimental data and demonstrated a good predictive ability (R2 > 0.95). By employing a Derringer and Suich’s desirability function, our results suggest that the optimal pellet density and durability are 1239 kg/m3 and 93%, respectively, when the pelleting time was set to 44 s, the ultrasonic power was set to 50%, and pressure was set to 42 psi (289,580 Pa).

[1]  Shahab Sokhansanj,et al.  Binderless Pelletization of Biomass , 2005 .

[2]  Z. J. Pei,et al.  An experimental study on charring of cellulosic biomass in ultrasonic vibration-assisted pelleting , 2011, Int. J. Manuf. Res..

[3]  Kasiviswanathan Muthukumarappan,et al.  Influence of AFEX™ pretreated corn stover and switchgrass blending on the compaction characteristics and sugar yields of the pellets , 2016 .

[4]  Zhijian Pei,et al.  Ultrasonic-Vibration Assisted Pelleting for Cellulosic Ethanol Manufacturing: An Experimental Investigation of Power Consumption , 2011 .

[5]  Surinder Kumar Singla,et al.  Response surface methodology based extraction of Tribulus terrestris leads to an upsurge of antilithiatic potential by inhibition of calcium oxalate crystallization processes , 2017, PloS one.

[6]  Jimmy Alexander Faria Albanese,et al.  Energy Potential and Greenhouse Gas Emissions from Bioenergy Cropping Systems on Marginally Productive Cropland , 2015 .

[7]  Lope G. Tabil,et al.  Compression Characteristics and Energy Requirement of Briquettes Made from a Mixture of Corn Stover and Peanut Shells , 2015 .

[8]  Shaoqi Zhou,et al.  Optimization of the photoelectrocatalytic oxidation of landfill leachate using copper and nitrate co-doped TiO2 (Ti) by response surface methodology , 2017, PloS one.

[9]  Hwai Chyuan Ong,et al.  Optimization of Reducing Sugar Production from Manihot glaziovii Starch Using Response Surface Methodology , 2017, Energies.

[10]  Douglas C. Montgomery,et al.  Response Surface Methodology: Process and Product Optimization Using Designed Experiments , 1995 .

[11]  Zhijian Pei,et al.  Ultrasonic Vibration-Assisted Pelleting of Biomass: A Designed Experimental Investigation on Pellet Quality and Sugar Yield , 2010 .

[12]  Wei Zhang,et al.  Optimization of Extraction Conditions for Maximal Phenolic, Flavonoid and Antioxidant Activity from Melaleuca bracteata Leaves Using the Response Surface Methodology , 2016, PloS one.

[13]  S. Sokhansanj,et al.  Specific energy requirement for compacting corn stover. , 2006, Bioresource technology.

[14]  W. Cong,et al.  Ultrasonic vibration-assisted pelleting for cellulosic biofuels manufacturing: A study on in-pellet temperatures , 2015 .

[15]  Siuli Mukhopadhyay,et al.  Response surface methodology , 2010 .

[16]  P. Križan,et al.  Behavior of Beech Sawdust during Densification into a Solid Biofuel , 2015 .

[17]  Jibin Sun,et al.  In Vitro Optimization of Enzymes Involved in Precorrin-2 Synthesis Using Response Surface Methodology , 2016, PloS one.

[18]  Shahab Sokhansanj,et al.  ECONOMICS OF PRODUCING FUEL PELLETS FROM BIOMASS , 2006 .

[19]  A. Bassam,et al.  Esterification Optimization of Crude African Palm Olein Using Response Surface Methodology and Heterogeneous Acid Catalysis , 2018 .

[20]  Mohamad I. Al-Widyan,et al.  STRESS–DENSITY RELATIONSHIP AND ENERGY REQUIREMENT OF COMPRESSED OLIVE CAKE , 2001 .

[21]  Shahab Sokhansanj,et al.  Integrating Biomass Feedstock with an Existing Grain Handling System for Biofuels , 2006 .

[22]  Charles E. Wyman,et al.  Cellulosic Ethanol: A Unique Sustainable Liquid Transportation Fuel , 2008 .

[23]  Zhijian Pei,et al.  Ultrasonic Vibration-Assisted Pelleting of Sorghum Stalks: Effects of Pressure and Ultrasonic Power , 2010 .

[24]  Zhijian Pei,et al.  Effects of ultrasonic vibration-assisted pelleting on chemical composition and sugar yield of corn stover and sorghum stalk , 2015 .

[25]  R. .. Morey,et al.  Factors affecting strength and durability of densified biomass products. , 2009 .

[26]  M. Kianmehr,et al.  Effect of temperature, pressure and moisture content on durability of cattle manure pellet in open-end die method. , 2012 .

[27]  Zhijian Pei,et al.  Ultrasonic vibration-assisted pelleting of wheat straw: a predictive model for pellet density using response surface methodology , 2012 .

[28]  Zhijian Pei,et al.  Comparison of two pelleting methods for cellulosic ethanol manufacturing: ultrasonic vibration-assisted pelleting vs. ring-die pelleting , 2016 .

[29]  David Ben-Arieh,et al.  An Agent-Based Model of a Hepatic Inflammatory Response to Salmonella: A Computational Study under a Large Set of Experimental Data , 2016, PloS one.

[30]  S. Polasky,et al.  Land Clearing and the Biofuel Carbon Debt , 2008, Science.

[31]  G. Schoenau,et al.  Compaction characteristics of barley, canola, oat and wheat straw , 2009 .

[32]  P. D. Jensen,et al.  Comparative study of durability test methods for pellets and briquettes , 2006 .

[33]  Danchen Zhu,et al.  The densification of bio-char: Effect of pyrolysis temperature on the qualities of pellets. , 2016, Bioresource technology.

[34]  S. Sokhansanj,et al.  Effects of compressive force, particle size and moisture content on mechanical properties of biomass pellets from grasses , 2006 .

[35]  Meng Zhang,et al.  Ultrasonic vibration-assisted pelleting of wheat straw: a predictive model for energy consumption using response surface methodology. , 2014, Ultrasonics.

[36]  Nevena Mišljenović,et al.  The effects of sugar beet molasses on wheat straw pelleting and pellet quality. A comparative study of pelleting by using a single pellet press and a pilot-scale pellet press , 2016 .

[37]  A. F. Turhollow,et al.  Biomass Densification - Cubing Operations and Costs for Corn Stover , 2004 .

[38]  Desire L. Massart,et al.  Simultaneous optimization of several chromatographic performance goals using Derringer's desirability function , 1991 .

[39]  Bryce J. Stokes,et al.  U.S. Billion-ton Update: Biomass Supply for a Bioenergy and Bioproducts Industry , 2011 .

[40]  Thanasit Wongsiriamnuay,et al.  Effect of densification parameters on the properties of maize residue pellets , 2015 .

[41]  M. Deaton,et al.  Response Surfaces: Designs and Analyses , 1989 .

[42]  Jun Liu,et al.  Life-cycle energy use and greenhouse gas emission implications of Brazilian sugarcane ethanol simulated with the GREET model. , 2008 .

[43]  Z. Husain,et al.  Briquetting of palm fibre and shell from the processing of palm nuts to palm oil , 2002 .

[44]  Meng Zhang,et al.  An Experimental Study on Temperature in Ultrasonic Vibration-Assisted Pelleting of Cellulosic Biomass , 2010 .

[45]  Yong-Cheng Shi,et al.  Process optimization for ethanol production from photoperiod-sensitive sorghum: Focus on cellulose conversion , 2011 .

[46]  Shahab Sokhansanj,et al.  Process conditions affecting the physical quality of alfalfa pellets , 1996 .

[47]  Hua Chen,et al.  Optimal Color Design of Psychological Counseling Room by Design of Experiments and Response Surface Methodology , 2014, PloS one.

[48]  S. Sokhansanj,et al.  An Overview of Compaction of Biomass Grinds , 2003 .

[49]  G. Derringer,et al.  Simultaneous Optimization of Several Response Variables , 1980 .

[50]  Meng Zhang,et al.  Ultrasonic vibration-assisted (UV-A) pelleting of wheat straw: a constitutive model for pellet density. , 2015, Ultrasonics.