Highly digestible nitrogen-enriched straw upgraded by ozone-urea pretreatment: Digestibility metrics and energy-economic analysis
文献类型： 外文期刊
第一作者： Ghorbani, Marzieh
作者： Ghorbani, Marzieh;Sarlaki, Ehsan;Pan, Junting;Ghorbani, Marzieh;Kianmehr, Mohammad Hossein;Arabhosseini, Akbar;Sarlaki, Ehsan;Li, Qiao;Wei, Dan;Vakilian, Keyvan Asefpour;Varjani, Sunita;Aghbashlo, Mortaza;Tabatabaei, Meisam;Tabatabaei, Meisam
作者机构：
关键词： Ozone -urea pretreatment; Wheat straw; Digestibility; Total digestible nutrients; Nitrogen enrichment; Anaerobic microorganisms
期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：11.889； 五年影响因子：11.139 ）
ISSN： 0960-8524
年卷期： 2022 年 360 卷
页码：
收录情况： SCI
摘要： Ozone is a powerful oxidative gas widely used as a green pretreatment to enhance the delignification of cereal straws. Urea pretreatment can enrich straws with nitrogen to make them more accessible to anaerobic microorganisms. This study aimed to evaluate the effect of ozone-urea pretreatment on the digestibility of wheat straw (i.e., physicochemical, nitrogen enrichment, gas production, nutritional value, and surface chemistry). The results of ozone-urea pretreatment were compared with non-pretreated, ozone-pretreated, and urea-pretreated samples. This pretreatment method outperformed the other methods in terms of digestibility metrics. The ozoneurea pretreatment resulted in a 50% reduction in lignin, a 4.2 times increase in crude protein, a 22.5% increase in bonded organic-N, a 2 times increase in 24 h-gas production, and a 43.67% increase in total digestible nutrients compared to the non-pretreated sample. Based on the total digestible nutrients index, one-tonne ozone-ureapretreated straw would be 70.6 USD cheaper than the non-pretreated one.
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