基于湿解技术处理木质纤维类废物的研究

运用木质纤维素固体基质半纤维素、纤维素和木质素定量分析程序等分析检测了不同湿解工况下草坪草和杂草主要组分的化学变化。结果表明,在湿解过程中草坪草和杂草中半纤维素、纤维素的相对含量呈减少趋势;木质素类物质经过衍生和小分子缩合后,其相对含量呈增加趋势;湿解最终产物呈弱酸性,可以用来改良碱性土壤。经过湿解处理的有机物料有机质含量丰富并含有大量腐殖酸,随湿解温度升高,腐殖化程度增加。在湿解过程中有机物料的主要化学组分同时受到热、湿、水解等各种作用,最终形成腐殖质。

Lignocellulose Waste Disposal by Hydrothermal Degradation

Quantitative analysis procedure of lignocellulose solid substrate including hemicellulose,cellulose and lignin,ignition method,volumetric method and soak extract method were utilized to study the changes of chemical components in lawn-grass and weeds during hydrothermal degradation with different conditions.Results showed that during hydrothermal degradation,the contents of hemicellulose and cellulose in lawn-grass and weeds decreased while the content of lignin increased due to derivation and condensation.The final products were acidity,which can be used to improve alkali soil.The products of hydrothermal degradation contained abundant organic matter and humic matter,and the degree of humification increased with the increase of temperature of hydrothermal degradation.