{"title":"伊朗干旱区水库沉积物重金属污染多变量生命周期综合评价及再利用情景评价","authors":"Hajar Abyar, Sahel Pakzad-Toochaei, Fatemeh Einollahipeer, Mohsen Nowrouzi","doi":"10.1007/s11356-025-36675-y","DOIUrl":null,"url":null,"abstract":"<div><p>The remediation and sustainable management of metal-contaminated sediments in arid-region water reservoirs are increasingly critical. This study presents a comprehensive environmental assessment of sediment contamination in the Chahnimeh reservoirs, a vital water source in Iran’s drought-prone Sistan region. This research employs an integrated strategy that uniquely amalgamates multivariate statistical analysis, spatial distribution mapping, pollution and ecological risk indices, and life cycle assessment (LCA) to delineate contamination levels and assess sustainable sediment reuse alternatives. Results revealed substantial contamination, especially from Hg, Co, and Zn, with Chahnimeh 1, and the inlet intake identified as major hotspots. Elevated Hg levels were linked to anthropogenic inputs, particularly fertilizers and domestic wastewater. Although several metals exceeded the sediment quality thresholds, Hg exhibited the highest enrichment relative to the background values (pollution load index ≥ 1). The LCA results indicated notable environmental burdens, with 1 kg of sediment contributing 9–12.38 kg 1,4-DB eq. to human toxicity, 0.03–0.05 kg 1,4-DB eq. to aquatic ecotoxicity, and 0.6–0.76 kg CO<sub>2</sub> eq. emissions, mainly attributed to Hg and Al. Evaluation of five reuse scenarios showed that using contaminated sediments in cement and plaster production yields significant environmental benefits, with net negative CO<sub>2</sub> impacts (593 to 15,060 kg CO<sub>2</sub> eq./t), while road construction presented higher impacts in some categories. Overall, this study provides essential insight into sediment-associated risks in water-scarce regions and proposes environmentally sound reuse options. It offers a replicable framework for mitigating contamination, reducing environmental burdens, and advancing sustainable resource recovery in reservoir sediment management.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":"32 27","pages":"16413 - 16431"},"PeriodicalIF":5.8000,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Integrated multivariate and life cycle assessment of heavy metal contamination in sediments from arid-region water reservoirs in Iran with reuse scenario evaluation\",\"authors\":\"Hajar Abyar, Sahel Pakzad-Toochaei, Fatemeh Einollahipeer, Mohsen Nowrouzi\",\"doi\":\"10.1007/s11356-025-36675-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The remediation and sustainable management of metal-contaminated sediments in arid-region water reservoirs are increasingly critical. This study presents a comprehensive environmental assessment of sediment contamination in the Chahnimeh reservoirs, a vital water source in Iran’s drought-prone Sistan region. This research employs an integrated strategy that uniquely amalgamates multivariate statistical analysis, spatial distribution mapping, pollution and ecological risk indices, and life cycle assessment (LCA) to delineate contamination levels and assess sustainable sediment reuse alternatives. Results revealed substantial contamination, especially from Hg, Co, and Zn, with Chahnimeh 1, and the inlet intake identified as major hotspots. Elevated Hg levels were linked to anthropogenic inputs, particularly fertilizers and domestic wastewater. Although several metals exceeded the sediment quality thresholds, Hg exhibited the highest enrichment relative to the background values (pollution load index ≥ 1). The LCA results indicated notable environmental burdens, with 1 kg of sediment contributing 9–12.38 kg 1,4-DB eq. to human toxicity, 0.03–0.05 kg 1,4-DB eq. to aquatic ecotoxicity, and 0.6–0.76 kg CO<sub>2</sub> eq. emissions, mainly attributed to Hg and Al. Evaluation of five reuse scenarios showed that using contaminated sediments in cement and plaster production yields significant environmental benefits, with net negative CO<sub>2</sub> impacts (593 to 15,060 kg CO<sub>2</sub> eq./t), while road construction presented higher impacts in some categories. Overall, this study provides essential insight into sediment-associated risks in water-scarce regions and proposes environmentally sound reuse options. It offers a replicable framework for mitigating contamination, reducing environmental burdens, and advancing sustainable resource recovery in reservoir sediment management.</p><h3>Graphical Abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":545,\"journal\":{\"name\":\"Environmental Science and Pollution Research\",\"volume\":\"32 27\",\"pages\":\"16413 - 16431\"},\"PeriodicalIF\":5.8000,\"publicationDate\":\"2025-06-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Science and Pollution Research\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11356-025-36675-y\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"0\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Science and Pollution Research","FirstCategoryId":"93","ListUrlMain":"https://link.springer.com/article/10.1007/s11356-025-36675-y","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"0","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
摘要
干旱区水库金属污染沉积物的修复和可持续管理日益重要。本研究对Chahnimeh水库的沉积物污染进行了全面的环境评估，Chahnimeh水库是伊朗易干旱的锡斯坦地区的重要水源。本研究采用多元统计分析、空间分布图、污染和生态风险指数以及生命周期评估（LCA）相结合的综合策略来描绘污染水平并评估可持续沉积物再利用方案。结果显示，Chahnimeh - 1污染严重，特别是Hg、Co和Zn，并且进水口被确定为主要热点。汞含量升高与人为因素有关，尤其是化肥和生活废水。虽然有几种金属超过了沉积物质量阈值，但相对于背景值，汞的富集程度最高（污染负荷指数≥1）。LCA结果显示了显著的环境负担，1 kg沉积物对人类毒性的贡献为9-12.38 kg 1,4- db当量，对水生生态毒性的贡献为0.03-0.05 kg 1,4- db当量，对二氧化碳当量的贡献为0.6-0.76 kg，主要归因于汞和铝。对5种再利用方案的评估表明，在水泥和石膏生产中使用受污染的沉积物产生了显著的环境效益，净负二氧化碳影响（593至15,060 kg CO2当量/t）。而道路建设对某些类别的影响较大。总的来说，这项研究提供了对缺水地区与沉积物有关的风险的基本见解，并提出了无害环境的再利用方案。它为减轻污染、减轻环境负担和促进水库沉积物管理中的可持续资源恢复提供了一个可复制的框架。
Integrated multivariate and life cycle assessment of heavy metal contamination in sediments from arid-region water reservoirs in Iran with reuse scenario evaluation
The remediation and sustainable management of metal-contaminated sediments in arid-region water reservoirs are increasingly critical. This study presents a comprehensive environmental assessment of sediment contamination in the Chahnimeh reservoirs, a vital water source in Iran’s drought-prone Sistan region. This research employs an integrated strategy that uniquely amalgamates multivariate statistical analysis, spatial distribution mapping, pollution and ecological risk indices, and life cycle assessment (LCA) to delineate contamination levels and assess sustainable sediment reuse alternatives. Results revealed substantial contamination, especially from Hg, Co, and Zn, with Chahnimeh 1, and the inlet intake identified as major hotspots. Elevated Hg levels were linked to anthropogenic inputs, particularly fertilizers and domestic wastewater. Although several metals exceeded the sediment quality thresholds, Hg exhibited the highest enrichment relative to the background values (pollution load index ≥ 1). The LCA results indicated notable environmental burdens, with 1 kg of sediment contributing 9–12.38 kg 1,4-DB eq. to human toxicity, 0.03–0.05 kg 1,4-DB eq. to aquatic ecotoxicity, and 0.6–0.76 kg CO2 eq. emissions, mainly attributed to Hg and Al. Evaluation of five reuse scenarios showed that using contaminated sediments in cement and plaster production yields significant environmental benefits, with net negative CO2 impacts (593 to 15,060 kg CO2 eq./t), while road construction presented higher impacts in some categories. Overall, this study provides essential insight into sediment-associated risks in water-scarce regions and proposes environmentally sound reuse options. It offers a replicable framework for mitigating contamination, reducing environmental burdens, and advancing sustainable resource recovery in reservoir sediment management.
期刊介绍：
Environmental Science and Pollution Research (ESPR) serves the international community in all areas of Environmental Science and related subjects with emphasis on chemical compounds. This includes:
- Terrestrial Biology and Ecology
- Aquatic Biology and Ecology
- Atmospheric Chemistry
- Environmental Microbiology/Biobased Energy Sources
- Phytoremediation and Ecosystem Restoration
- Environmental Analyses and Monitoring
- Assessment of Risks and Interactions of Pollutants in the Environment
- Conservation Biology and Sustainable Agriculture
- Impact of Chemicals/Pollutants on Human and Animal Health
It reports from a broad interdisciplinary outlook.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
