green chemistry deep eutectic solvents lignin new green technology biomass delignification characterization pulp thermal properties thermoanalysis deacidification green technology extraction degradation degradation of cellulose determination isolation separation properties additives pulping phenolic compounds green solvents bark fractionation uv spectroscopy degradation of paper swelling swelling ability prediction precipitation phytomass nades valorization carbon materials btx polmers biorefinery brightness kappa number viscosity protectors tcf ozone ozone bleaching stiffness tensile length tear burst tensile mechanical properties acidity solutions solubility decomposition long-term stability isothermal process olive oils oxidation industry nutraceuticals wood processing volatile organic compounds wood market value ionic liquids wheat straw selectivity size lignosulfonates tability and mechanical permanence of paper best available technologies mass technology comparative study organic acids loss of fibre strength acetic acid formic acid hhv higher heating value pyrolysis characterization pyrolysis products pyr-gc/ms elemental analysis water retention value (wrv) hornification degree of polymerization electrokinetic properties of fibres wrv methoxyl group renewable raw materials sulphur acid black liquor selectively precipitated lignin
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