Sequential Production of Xylose, Levulinic Acid and Activated Carbon from Pine Wood

Abstract

In this work, a sequential production of bioenergy platform intermediates (i. e., xylose and levulinic acid (LA)) and carbon materials from pine wood was developed by a three‐step conversion technology. Firstly, the hemicellulose in pine wood was hydrolyzed, obtaining 12.8 wt% xylose and 68.9 wt% solid products containing cellulose and lignin. Secondly, the solid products were hydrolyzed, obtaining 30.6 wt% LA and 42.0 wt% solid residues containing humins and lignin. Thirdly, the solid residues were used for activated carbon (AC) production through potassium hydrate (KOH) activation followed by pyrolysis from 400–800 oC. An AC obtained at a pyrolysis temperature of 800 oC had a high Brunauer‐Emmett‐Teller (BET) surface area of 2436 m2/g and pore volume of 0.91 cm3/g, which exhibited an excellent reactive brilliant red X‐3B (RBRX‐3B) adsorption capacity of 892 mg/g. As a case, 1000 g of pine wood finally produced 128 g xylose, 211 g LA and 39 g high‐performance activated carbon.

Effective toluene removal from aqueous solutions using fast pyrolysis-derived activated carbon from agricultural and forest residues: Isotherms and kinetics study

“…Some of them are simply burnt to generate heat and steam, but most of them have been just disposed of, resulting in incurring additional costs. However, the agricultural and forest residues meet basic the conditions to be AC and these advantages make agricultural and forest residues emerged as attractive resources for AC production [ [53] , [54] , [55] ]. For these reasons, the study of pyrolytic biochars produced from agricultural and forest residues as an alternative precursor for the production of AC and their possibility as an adsorbent for the removal of aromatic compounds are presented in this work.…”

Effect of Temperature and MgCl2 Concentration on the Catalytic Pyrolysis of Malt Waste Using Response Surface Methodology

“…[3,4] This process is normally carried out in the total or partial absence of oxygen, at a temperature range of 400-600 °C. [5] Many industrial wastes, such as plastic waste, [6,7] spent tire, [8] tetra pak residue, [9] cellulose, [10,11] lignin, [12] sugarcane bagasse, [13][14][15] coffee residues, [16,17] corncob, [18] fruit residue, [19] oilseed shells, [20] microalgae, [21,22] seeds [23,24] and pine wood, [25] among others, have been evaluated as sources for the pyrolysis process.…”