Water Science and Technology (Jul 2024)
Treatment techniques and resource recovery of source-separated urine: a bibliometric analysis and literature review
Abstract
Human urine, which is high in nutrients, acts as a resource as well as a contaminant. Indiscriminate urine discharge causes environmental pollution and wastes resources. To elucidate the research status and developmental trajectory of source-separated urine (SSU) treatment and recovery, this study was based on the Web of Science Core Collection (WOSCC) database and used the bibliometric software VOSviewer and CiteSpace to conduct a comprehensive and in-depth bibliometric analysis of the related literature in this field. The findings revealed a general upward trend in SSU treatment and recovery from 2000 to 2023. The compendium of 894 scholarly articles predominantly focused on the disciplines of Environmental Sciences, Environmental Engineering, and Water Resources. China and the USA emerged as the foremost contributors. Keyword co-occurrence mapping, clustering, and burst analysis have shown that the recovery of nitrogen and phosphorus from urine is currently the main focus, with future prospects leaning toward the retrieval of biochemicals and chemical energy. This study systematically categorizes and compares the developmental status, current advancements, and research progress in this field. The findings of this study provide a valuable reference for understanding developmental pathways in this field of research. HIGHLIGHTS A total of 894 publications pertinent to source-separated urine (SSU) treatment and recovery was analyzed.; Bibliometric results were visualized using VOSViewer, and Citespace.; The current treatment and resource recovery technologies applied in SSU were reviewed.; The research focus and development status of SSU treatment and recovery were summarized.; This provides prospective avenues and suggestions for SSU treatment and recovery.;
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