Fast pyrolysis of mannan-rich ivory nut (Phytelephas aequatorialis) to valuable biorefinery products

摘要: Abstract Ivory nut residues from the palm Phytelephas aequatorialis were converted via fast pyrolysis into a set of valuable biorefinery products, being (i) liquids rich in levomannosan and 5-hydroxymethyl furfural (5-HMF), (ii) biochar, with potential for soil applications, (iii) non-condensable gases upgrading syngas processes. The ivory mannan-rich leftovers button manufacturing Ecuador. A handful studies, dating back 20th century, have investigated gram-scale valorization to e.g. mannose. Nevertheless, advances science technology on products called comprehensive reassessment this underutilized feedstock. fully equipped, continuously operated lab-scale reactor (200 g.h−1 feed) was used at 350 °C 500 °C. liquid yield 57.53 wt% 60.36 wt% aqueous phase obtained contained 17.5 wt% (d.b.) anhydrosugars, which 90% levomannosan, 11.6 wt% furans, 56% 5-HMF 17% furfural. carbon stability biochars, measured Edinburgh accelerated ageing tool, 40.6% 64.6%, respectively. Non-condensable during only composed CO2 CO (CO2:CO molar ratio 4:1), while 500 °C, CO2:CO:H2:CH4 9:9:4:1. Overall, results demonstrate that holds as starting point products.