Coal-bearing kaolinite-based plant growth-promoting fertilizer with integrated slow-release and water-retention properties.

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Science of the Total Environment Pub Date : 2025-01-03 DOI:10.1016/j.scitotenv.2024.178235

Yi Zhou, Guocheng Lv, Qinwen Zheng, Xiaotong Yang, Libing Liao

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引用次数: 0

Abstract

The development of ecological fertilizers has become crucial in modern agriculture due to the increasing global population and diminishing arable land resources. Herein, a plant growth-promoting fertilizer (UKS) with dual functions of slow-release and water-retention was prepared by combining liquid-phase intercalation method and crosslinking gel method. The physicochemical properties of UKS were analyzed and its dissolution, slow-release, and water-retention properties were systematically evaluated. The intercalation ratio was able to reach 53.3 % after intercalation for 5 days, exhibiting the slow-release potential of nitrogen fertilizer. The incorporation of sodium alginate improved the mechanical strength of the frame structure and effectively enhanced the water retention and slow-release properties of the fertilizer. Moreover, the cultivation experiments had shown that UKS can promote the growth of crops' leaves and roots, as evidenced by the fact that the length of them reached 9.8 cm and 5.4 cm, representing a respective growth of 16.8 % and 16.9 %, respectively. This strategy delivers a new approach for the development of eco-friendly agricultural fertilizers, and also provides a potential way to use coal-based solid waste for ecological restoration nearby.

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来源期刊

Science of the Total Environment 环境科学-环境科学

CiteScore

17.60

自引率

10.20%

发文量

8726

审稿时长

2.4 months

期刊介绍： The Science of the Total Environment is an international journal dedicated to scientific research on the environment and its interaction with humanity. It covers a wide range of disciplines and seeks to publish innovative, hypothesis-driven, and impactful research that explores the entire environment, including the atmosphere, lithosphere, hydrosphere, biosphere, and anthroposphere. The journal's updated Aims & Scope emphasizes the importance of interdisciplinary environmental research with broad impact. Priority is given to studies that advance fundamental understanding and explore the interconnectedness of multiple environmental spheres. Field studies are preferred, while laboratory experiments must demonstrate significant methodological advancements or mechanistic insights with direct relevance to the environment.