Development of waste straw modified material to reduce soil N2O emission: An application strategy for adsorption of functional groups

• Published in: Industrial crops and products Vol. 203; p. 117192
• Main Authors: Wang, Weishuai, Yang, Shiqi, Yang, Zhengli, Zhang, Aiping
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2023
• Subjects: Adsorption capacity; Cellulose; Corn straw; N2O emission reduction; Semi-IPN technology; Adsorption capacity; Corn straw; N2O emission reduction; Cellulose; Semi-IPN technology
• ISSN: 0926-6690; 1872-633X
• DOI: 10.1016/j.indcrop.2023.117192

The goal of this study was to enhance the utilization of millet straw and reduce N2O emissions, used the semi-interpenetrating (Semi-IPN) technology to develop a novel straw-based material (CSC-g-PAA/PPVA) through the composite integration of modified straw and linear polymer (PPVA). The fourier-transform infrared, x-ray diffraction, x-photoelectron spectroscopy and scanning electron microscopy techniques were be measured to provide evidence of the structure and morphology characterization of CSC-g-PAA/PPVA. The results demonstrated that it exhibited excellent water absorbency and enhanced the adsorption capacity of inorganic nitrogen, with the maximum adsorption of NH4+ and NO3- were 94.5 mg/g and 70.3 mg/g, respectively. The properties of CSC-g-PAA/PPVA could significantly reduce N2O emissions, which was 42.5–95.7% lower than that of the fertilization groups, demonstrated that the modified material produced in this study had significant potential to reduce greenhouse gas emissions. [Display omitted] •The soil conditioner is derived from corn straw, which can enhance waste straw utilization.•The product is rich in typical functional group, providing active sites for NH4+, NO3- retention.•The straw-based conditioner has significant potential to reduce N2O emissions in soil.•Preparing by waste straw can reduce cost, is beneficial to industrial production.