Insight into the Mechanism of Humic Acid’s Dissolution Capacity for Lignin in the Biomass Substrates
Insight into the Mechanism of Humic Acid’s Dissolution Capacity for Lignin in the Biomass Substrates
复制标题
深入了解腐殖酸对生物质基质中木质素的溶解能力的机制
DOI：
10.1021/acssuschemeng.2c05471
复制
发表时间：
2022-10
影响因子：
8.4
通讯作者：
Qiang Yong
中科院分区：
文献类型：
--
作者：
Wei Tang;Caoxing Huang;Zhe Ling;Chenhuan Lai;Qiang Yong
木质素在大多数溶剂中的溶解性较差，这是木质素有价化以提高整体生物炼油经济性的最大挑战。在这项工作中，腐植酸(HA)，一种天然的表面活性剂，就其协助生物质脱木素的能力进行了研究。在使用标准HA获得基线脱木素水平后，提出了由疏水相互作用驱动木质素去除的作用机理。为了探索这一假设，对HA进行了两种方式的修改。一批进行磺化以增加HA的亲水性，另一批经酯化以增加HA的疏水性。用改性的HA材料处理相同的底物表明，疏水性的提高提供了进一步的脱木素水平。结果表明，随着疏水性从12.2%(S-HA)提高到16.8%(E-HA)，木质素在HA溶液中的溶解度增加。因此，最初的假设被证实，HA衍生的脱木素改善似乎是疏水相互作用的函数。这些结果应该有助于进一步研究选择用于生物精炼过程的表面活性剂(理想情况下是那些基于生物的表面活性剂)。
The poor solubility of lignin in most solvents causes the biggest challenges in lignin valorization to improve overall biorefinery economics. In this work, humic acid (HA), a natural surfactant, was investigated with respect to its ability to assist in biomass delignification. After obtaining a baseline level of delignification using standard HA, a mechanism of action was proposed in which the lignin removal was driven by hydrophobic interactions. To explore this hypothesis, HA was modified in two ways. One batch was sulfonated to increase HA hydrophilicity, while the other was esterified to increase HA hydrophobicity. Treatment of the same substrates with the modified HA materials revealed that elevated hydrophobicity provided a further increase in the level of delignification. It was found that the solubility of lignin in the HA solution was increased with the enhancement of HA hydrophobicity from 12.2% (S-HA) to 16.8% (E-HA). Therefore, the initial hypothesis was confirmed that HA-derived delignification improvements appear to be a function of hydrophobic interactions. These results should aid further investigation into choosing surfactants (ideally those that are biobased) for utility in biorefinery processes.
登录
查看更多内容
影响因子：
2
作者：
Huang, Caoxing;He, Juan;Yong, Qiang
通讯作者：
Yong, Qiang
DOI：
10.1016/j.ijbiomac.2022.09.112
发表时间：
2022-09-15
影响因子：
8.2
作者：
Chen, Xiaojuan;Guo, Tao;Sun, Shaolong
通讯作者：
Sun, Shaolong
未揭示的土壤改良剂模型化合物对麦秆自水解效率和酶水解的影响
影响因子：
6.3
作者：
Xinxing Wu;Wei Tang;Chen Huang;Caoxing Huang;Chenhuan Lai;Qiang Yong
通讯作者：
Qiang Yong
影响因子：
8.8
作者：
B. Scaglia;A. Baglieri;F. Tambone;M. Gennari;F. Adani
通讯作者：
B. Scaglia;A. Baglieri;F. Tambone;M. Gennari;F. Adani
影响因子：
11.4
作者：
Chen, Yu-An;Zhou, Yan;Zhao, Xuebing
通讯作者：
Zhao, Xuebing