Pyrolytic coproduction of bio-char and upgraded bio-oils from abundant agro-industrial wastes

The co-production of bio-char and upgraded bio-oil by fast pyrolysis raw sulfuric-acid pretreated agro-industrial wastes (corn cob, sugarcane bagasse sunflower seed hull) was investigated to valorize as sources value-added products (VAPs) following the circular bio-economy system. To this end, proximate elemental analyses were performed, adsorption properties determined in products. Bio-char yields from ranged 28–33% 30–35%, respectively. For all wastes, acid pretreatment increased solid fraction caused a reduction liquid one, compared untreated wastes. Pyrolysis led bio-chars bio-oils with different applications. Bio-chars could be put for soil amendment, primarily due high ashes concentration, mesoporosity, elevated cation exchange capacity; whereas, water addition, leading source carrying out reforming reactions context hydrogen production. Properties washed biomasses enabled them pollutant remediation, their specific surface microporosity features. corresponding bio-liquid stable-to-storage material, being practical furfural. These findings emphasize that lignocellulosic can envisaged starting materials producing VAPs via pyrolysis.