Ran Xueling, Deng Yun, Uppuluri Naga Sai Tejaswi, Li Bowen, Zheng Yonghui, Chen Penghui, Dong Renjie, Müller Joachim, Guo Jianbin, Oechsner Hans
College of Engineering (Key Laboratory of Clean Utilization Technology for Renewable Energy, Ministry of Agriculture), China Agricultural University, Beijing 100083, People's Republic of China.
The State Institute of Agricultural Engineering and Bioenergy, University of Hohenheim, Stuttgart 70593, Germany.
Sci Total Environ. 2023 Sep 20;892:164346. doi: 10.1016/j.scitotenv.2023.164346. Epub 2023 May 24.
In recent decades, the importance of managing the earth's dwindling phosphorus (P) has grown exponentially, as have efforts to develop a circular economy. Livestock manure represents a P-rich waste product, so recycling P from livestock manure has garnered the attention of scholars worldwide. Based on a global database from 1978 to 2021, this study presents the current status of recycling P from livestock manure and proposes strategies for efficient P utilization. Unlike traditional review articles, this work establishes a visual collaborative network on P recycling from livestock manure of research areas, countries, institutions, and authors through a bibliometric analysis using Citespace and VOSviewer software. The co-citation analysis of literature revealed the development of the main research content in this field, and further clustering analysis illustrated the current key research directions. Keyword co-occurrence analysis identified the hotspots and new frontiers of research in this field. According to the results, the United States was the most influential and actively contributing nation, and China was the country with the tightest international ties. The most popular research area was environmental science, and the Bioresource Technology published the largest number of papers in this area. The research priority was the technologies development of P recycling from livestock manure, of which the most used method was struvite precipitation and biochar adsorption. Subsequently, evaluation is also essential, including the economic benefits and environmental impacts of the recycling process by life cycle assessment and substance flow analysis, as well as the agronomic efficiency of the recycled products. New directions for technological innovation in recycling P from livestock manure and potential risks in the recycling process are explored. The results of this study may provide a framework for understanding the mechanisms of P utilization in livestock manure, and support the overall popularization of P recycling technology from livestock manure.
近几十年来，随着发展循环经济的努力不断增加，管理地球上日益减少的磷（P）的重要性呈指数级增长。畜禽粪便代表了一种富含磷的废弃物，因此从畜禽粪便中回收磷受到了全球学者的关注。基于1978年至2021年的全球数据库，本研究介绍了畜禽粪便磷回收的现状，并提出了磷高效利用的策略。与传统综述文章不同，本研究通过使用Citespace和VOSviewer软件进行文献计量分析，建立了一个关于畜禽粪便磷回收研究领域、国家、机构和作者的可视化合作网络。文献的共被引分析揭示了该领域主要研究内容的发展，进一步的聚类分析阐明了当前的关键研究方向。关键词共现分析确定了该领域研究的热点和新前沿。结果表明，美国是最具影响力且积极贡献的国家，中国是国际关系最紧密的国家。最热门的研究领域是环境科学，《生物资源技术》在该领域发表的论文数量最多。研究重点是畜禽粪便磷回收的技术开发，其中最常用的方法是鸟粪石沉淀和生物炭吸附。随后，评估也至关重要，包括通过生命周期评估和物质流分析对回收过程的经济效益和环境影响，以及回收产品的农艺效率。探讨了畜禽粪便磷回收技术创新的新方向以及回收过程中的潜在风险。本研究结果可为理解畜禽粪便磷利用机制提供框架，并支持畜禽粪便磷回收技术的全面推广。
