Resources Environment and Sustainability最新文献

{"title":"Calcium-rich bone biochar boosts fat, oil, and grease (FOG) biodegradability: Methane maximization and microbial community pattern","authors":"Ting Li ,&nbsp;Shah Faisal ,&nbsp;Jialing Tang ,&nbsp;Mahdy Elsayed ,&nbsp;Nousheen Iqbal ,&nbsp;Ye Pu ,&nbsp;Joachim Henjes ,&nbsp;Stephan Ende ,&nbsp;Abdelfatah Abomohra","doi":"10.1016/j.resenv.2025.100274","DOIUrl":"10.1016/j.resenv.2025.100274","url":null,"abstract":"<div><div>The present study evaluated calcium-rich bone biochar, derived from pig and chicken bones, for enhanced anaerobic digestion of FOG (fat, oil, grease). The study aimed to maximise energy recovery by reducing the negative impact of long-chain fatty acids (LCFAs) and to evaluate the subsequent effect on the microbial community structure. A series of 2.0 ​% FOG batch trials was prepared, adding pig bone biochar (PB) and chicken bone biochar (CB) based on their calcium (Ca) content to maintain (0.1, 0.5, and 1.0 ​% Ca concentrations). Parallelly, Ca was used at the same concentrations without biochar. Supplementation of 0.5 ​% PB, CB, and Ca individually enhanced LCFAs degradation up to 81.6 ​%, 81.0 ​%, and 84.8 ​%, respectively. Therefore, the accumulative methane yield increased by 4-, 3.9-, and 5.2-fold over the control FOG2.0 ​%. Reduction in methane production was observed at 1.0 ​% PB, CB, and Ca compared with 0.5 ​% but, interestingly, 1.0 ​% PB and CB showed higher accumulative methane yield of 135.6 ​mL ​g⁻¹ VS and 125.3 ​mL ​g⁻¹ VS, respectively, in comparison to Ca (60.7 ​mL ​g⁻¹ VS). There was enhancement in <em>Firmicutes</em> and <em>Campylobacteriotes</em>, accompanied by a simultaneous rise in <em>Methanosarcina</em> at 0.5 ​% PB (from 23.7 ​% to 78.1 ​%) and <em>Methanoculleus</em> at 0.5 ​% Ca (from 41.3 ​% to 50.0 ​%). Ca-rich PB and CB biochar significantly enhanced FOG anaerobic digestion through synergistic mechanisms, including reducing inhibition, stimulating microbes, facilitating electron transfer, and improving nutrient supply. Using animal bone residues for FOG anaerobic digestion provides both a sustainable waste management route and an efficient calcium-rich material to boost energy recovery.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100274"},"PeriodicalIF":7.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145266218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental advantages of green-labelled navel oranges in China: A supply chain perspective","authors":"Ruijin Luo ,&nbsp;Junhan Zhang ,&nbsp;Petronella Margaretha Slegers ,&nbsp;Minghao Zhuang ,&nbsp;Zhihua Zhang ,&nbsp;Xian Zhang ,&nbsp;Xuexian Li ,&nbsp;G.D.H. Claassen","doi":"10.1016/j.resenv.2025.100273","DOIUrl":"10.1016/j.resenv.2025.100273","url":null,"abstract":"<div><div>Quantifying the environmental performance (EP) of citrus supply chains (SCs) via life cycle assessment is important for optimising fruit production for sufficient vitamin and micronutrient provision at lower environmental costs. As a part of national programme in China, green-labelled navel oranges use up to 50.0 ​% less chemical nitrogen fertilisers and become increasingly popular for their high quality. However, their EP remain unclear from the full SC perspective, and critical indicators, e.g. ecotoxicity and land occupation potential (LOP), have been mostly neglected in previous studies. Based on interviews with orange SC (OSC) stakeholders, this study analyses eleven ReCiPe2016 (H) midpoint indicators and normalises characterised results, followed by Monte Carlo simulation, to compare the EP of conventional, green-labelled, and organic-labelled OSCs from production to consumption. Green-labelled OSCs show lower impacts across most categories. Specifically, they reduce the LOP by 72.6 ​% compared with organic-labelled OSCs and decrease the ozone depletion potential by 65.5 ​% relative to conventional OSCs. Their total environmental index is 31.4 ​% and 24.5 ​% lower than conventional and organic-labelled OSCs, respectively. Packaging, transport, and production are significant contributing stages. Key contributing inputs include nitrogen fertiliser, corrugated boxes, long-distance transport, and land use. Beyond well-recognised fossil fuel potential, terrestrial ecotoxicity potential and LOP are newly identified critical indicators for OSC evaluation. Thus, green-labelled OSCs represent a more environment-friendly model for high-yield and high-quality fruit supply. This multi-stage and multi-indicator approach offers a transferable framework for comprehensive evaluation and optimisation of fruit SCs towards sustainable fruit provision and environment management.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100273"},"PeriodicalIF":7.8,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145226851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A meta-analysis of feeding strategies for dairy cattle performance and greenhouse gas mitigation across the world","authors":"Aurele Gnetegha Ayemele ,&nbsp;Josy Karel Ngueuyim Nono ,&nbsp;Herbert Gnetegha Fotsidie ,&nbsp;Mbezele Junior Yannick Ngaba ,&nbsp;Mekonnen Tilahun ,&nbsp;Lu Ma ,&nbsp;Dengpan Bu ,&nbsp;Jianchu Xu","doi":"10.1016/j.resenv.2025.100271","DOIUrl":"10.1016/j.resenv.2025.100271","url":null,"abstract":"<div><div>Studies on the effects of cattle feeding strategies on greenhouse gas emissions are fragmented and cannot provide a global comparison of the feeding management practices that lead to optimal production while substantially reducing methane (CH₄) and ammonia (NH₃) emissions. The present study explains variability in enteric CH₄, NH₃ mitigations and cattle milk performance due to several diet composition and structure, feed management, breeding, animal experimental designs and CH₄ measurement tools. Effects from 80 treatments were meta-analyzed from an initial 4394 screened papers and we retained 31 articles distributed across 15 countries on four continents. Minerals in feed additive types increased milk yield the most (90 ​%) and, concomitantly, reduced CH₄ production by 33 ​%. Feed additive dosage ranging between 1 and 4 ​% also contributed to increasing milk yield by 47 ​% while reducing CH₄ by 58 ​%. Meanwhile the impact of 3-nitrooxypropanol (3-NOP) feed additive on health safety is still controversial. Although a partial mixed ration system highly contributed to milk yield (102 ​%), it did not contribute to CH₄ reduction as much as a total mixed ration system (39 ​%). The highest CH₄ reduction levels were recorded with GreenFeed (80 ​%) and a rotating experimental design (37 ​%). The Holstein cattle breed was more productive with an increase of 46 ​% of milk production while reducing CH₄ by 34 ​%. Grass forage increased NH₃ by 5 ​% while crop forage reduced it by 21 ​%. Agriculture can effectively reduce its emissions and contribute to climate-neutral goals as part of a coordinated, global effort involving multiple sectors.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100271"},"PeriodicalIF":7.8,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145226849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatio-temporal exposure of photovoltaic farms to typhoon disasters for sustainable development in China's Coastal Regions","authors":"Luguang Jiang ,&nbsp;Ye Liu ,&nbsp;Liwen Yang ,&nbsp;Huixia Zhao","doi":"10.1016/j.resenv.2025.100272","DOIUrl":"10.1016/j.resenv.2025.100272","url":null,"abstract":"<div><div>The climate-adaptive solar energy planning contributes directly to the United Nations Sustainable Development Goals 7 and 13. The juxtaposition of China's leadership in global PV expansion and the escalating climate risks in its coastal regions underscores the importance of aligning PV layout with risk mitigation. This study utilizes Landsat imagery to analyze the spatiotemporal changes of PV distribution in China's coastal regions, and assesses the effect of typhoon disasters to PV. Key findings reveal that by the end of 2023, the total PV area in coastal regions reached approximately 1962.89 ​km². Notably, provinces north of the Yangtze River hosted more than twice the PV area of those to the south. Rapid expansion began post-2015, with PV area more than doubling between 2020 and 2023. From a disaster risk perspective, about 20 ​% of China's coastal land area faces high typhoon risk, with 16 ​% of existing PV area located in high-risk regions. The East China Sea and South China Sea coasts exhibit the highest concentration of extreme-risk regions. Encouragingly, 82.15 ​% of recent PV expansion occurred in low-to-medium-risk regions, indicating that current layout strategies already account for typhoon threats. Looking ahead, the Bohai Sea coast, Yellow Sea coast, and coasts near the Nansha Islands present relatively low risk, making them preferable for future offshore PV projects. In contrast, the East and South China Sea coasts remain high-risk regions, necessitating cautious planning for offshore PV development.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100272"},"PeriodicalIF":7.8,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatial divergence of nitrogen fate in China's wheat systems: a meta-analysis and machine-learning roadmap for region-specific management","authors":"Yan'ge Yan ,&nbsp;Shuiqin Zhang ,&nbsp;Yingqiang Zhang ,&nbsp;Meng Xu ,&nbsp;Jiukai Xu ,&nbsp;Yanting Li ,&nbsp;Bingqiang Zhao ,&nbsp;Liang Yuan","doi":"10.1016/j.resenv.2025.100270","DOIUrl":"10.1016/j.resenv.2025.100270","url":null,"abstract":"<div><div>Optimizing crop productivity while mitigating pollution requires a system-wide understanding of nitrogen (N) fertilizer fate and its loss pathways. However, regional variability in N fate and its linkage to yield response in China's wheat systems remains poorly quantified. We collected 4077 observations to analyze the effects of N fertilizer management, climate, and soil properties on wheat yield, N fate, and reactive nitrogen (Nr) losses using meta-analysis and machine learning. At the national scale, wheat yield increased by 65.40 ​% with N fertilization, with applied N partitioned into 41.56 ​% uptake, 29.66 ​% residual, and 38.81 ​% losses. The Nr losses comprised NH₃ (9.35 ​%), N₂O (0.73 ​%), NO (0.38 ​%), leaching (7.38 ​%), and runoff (4.68 ​%). At the regional scale, N uptake exhibited an increasing trend from north to south, whereas N residual and N loss gradually decreased. NH₃ volatilization accounted for 91.76 ​% of total N loss in northern China (NC). In central China (CC), NH₃ constituted 53.45 ​% of the losses, with N leaching accounting for 41.38 ​%. By contrast, southern China (SC) showed a more even distribution of losses across pathways. N application rate was the key determinant of N fate, whereas pH, mean annual precipitation, mean annual temperature, and bulk density had the greatest influence on Nr losses. Nationally, N uptake was the dominant driver of yield response, accounting for 54.06 ​% of the variation. Regionally, uptake remained the key factor in CC (37.83 ​%), whereas NC (27.33 ​% uptake; 16.09 ​% loss) and SC (15.20 ​% uptake; 12.37 ​% loss) showed substantial sensitivity to N loss. N residual had minimal impact in most regions but was significant in CC (11.66 ​%). Enhancing nitrogen uptake is the top priority in increasing wheat yield across different regions of China, while the role of fertilizer N loss and residual regionally varied. Accordingly, N management should prioritize loss reduction in NC and SC, and residual management in CC.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100270"},"PeriodicalIF":7.8,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Iron-organic carbon coupling controls phosphorus transformation and release in decades manure-enriched paddy soil","authors":"Hao Chen ,&nbsp;Weihua Su ,&nbsp;Song Wu ,&nbsp;Yunfei Yu ,&nbsp;Dengjun Wang ,&nbsp;Qinglong Fu ,&nbsp;Yujun Wang ,&nbsp;Dongmei Zhou ,&nbsp;Shenqiang Wang ,&nbsp;Yu Wang","doi":"10.1016/j.resenv.2025.100269","DOIUrl":"10.1016/j.resenv.2025.100269","url":null,"abstract":"<div><div>Manure fertilizer, as high P source, is widely used to enhance soil P availability, achieving organic waste recycling and sustainable agriculture. However, the excessive application of manure fertilizer poses risks of P loss. Herein, we address this critical challenge through a 25-year <em>in-situ</em> field experiment combined with a 60-days anaerobic incubation experiments, exploring the vital roles of iron (Fe) and organic carbon (OC) in regulating P transformation. Our <em>in-situ</em> field results reveal that prolonged manure fertilizer inputs resulted in the decoupling of the Fe dissolution and inorganic P (P_i) release in paddy soil. Under the further anoxic incubations, the results showed both chemical fertilizer (CF) and manure fertilizer (pig manure, CPM) lifted the P_i concentration due to dissimilatory Fe reduction, but through different mechanisms. In CF treatment, the increased P mainly derived from the release of Fe-bound P_i (Fe-P_i). CPM enhanced the Fe transformation from crystalline to amorphous, resulting in 18.8 ​% loss of Fe-bound OC, this resulted in the coupled Fe-bound organic P (Fe-P_o) decreased from 455.4 to 7.9 ​mg ​kg⁻¹, ultimately leading to a sharp increase in labile P from 177.2 to 353.4 ​mg ​kg⁻¹. Notably, Fe-bound lipids and proteins were more prone to microbial degradation, accelerating the breakdown of organic matter and enhancing P mobilization. Our findings underscore the pivotal role of Fe-OC interactions in controlling P release and provide critical insights for developing more effective strategies to optimize P management in sustainable agricultural practices.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100269"},"PeriodicalIF":7.8,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145226850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Implications of a consumption-based accounting of greenhouse gas emissions from global dairy cattle systems","authors":"D. Caro ,&nbsp;F.M. Pulselli ,&nbsp;F. Sporchia","doi":"10.1016/j.resenv.2025.100268","DOIUrl":"10.1016/j.resenv.2025.100268","url":null,"abstract":"<div><div>Greenhouse gas (GHG) emissions from dairy systems at the national level are typically estimated at the point of production, following guidelines for national reporting. However, exploring the emissions allocated to the point of consumption also provides key insights into reducing emissions across all stages (inputs, production, trade, and consumption). In this study, the GHG emissions associated with global dairy cattle products were estimated using a consumption-based accounting approach. The analysis was based on data from 2015, covering 254 territories and considering 21 dairy cattle commodities. Our findings reveal that international trade in dairy products is dominated by a few countries, with the top 20 net importing/exporting countries accounting for about 70% of global emissions embodied in trade. Although, at the global level, GHG emissions embodied in the international trade of dairy cattle products represented a relatively small share of the total (133 Mt CO₂ eq, 9%), they were significant at the country level, particularly for countries heavily involved in trade. In some cases, imports accounted for more than 50% of consumption-related emissions. Trade among European Union countries was relevant representing 32% of the global GHG emission linked with the international trade of dairy products. By adopting a system-wide approach, this study aims to provide novel and critical information to reduce GHG emissions from the global dairy sector, contributing to initiatives such as Pathways to Dairy Net Zero. The results are discussed in the context of the importance of dairy products for global food security. The consumption-based analysis presented represents a different and original perspective in the computation of GHG emissions at the national level for a specific and relevant food item. This approach, guiding policymakers in identifying key impact areas across all stages of the supply chain, can foster the transition to low-carbon dairy products, and support circular economy practices.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100268"},"PeriodicalIF":7.8,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal climate drives soil salinity dynamics through vegetation and water regulation","authors":"Danyang Wang ,&nbsp;Jiaying Zheng ,&nbsp;Yayi Tan ,&nbsp;Zeqi Wei ,&nbsp;Jingda Xin ,&nbsp;Yihan Lu ,&nbsp;Weijie Huang ,&nbsp;Yunqi Wang ,&nbsp;Huan Zhang ,&nbsp;Changbo Zhong ,&nbsp;Haiyan Zhao ,&nbsp;Jianjun Pan ,&nbsp;Zhaofu Li","doi":"10.1016/j.resenv.2025.100266","DOIUrl":"10.1016/j.resenv.2025.100266","url":null,"abstract":"<div><div>Soil salinization threatens global agriculture and ecosystems, posing a critical challenge for sustainable development. Understanding how seasonal variations and environmental factors influence salinity dynamics is essential. However, current research relies heavily on single-time-point remote sensing, which offers limited temporal insights and fails to uncover the mechanisms driving seasonal changes. This study proposed the dynamic time warping-based model transfer-structural equation model (DBS) framework, which integrates dynamic time warping (DTW), base model transfer, and structural equation modeling (SEM), to explore the regulatory mechanisms of environmental factors on soil salinity dynamics. The framework includes building a stacking-electrical conductivity (EC) base model, aligning multi-month data with DTW, and analyzing environmental factors through SEM. Key predictors identified were normalized difference vegetation index (NDVI), normalized difference water index (NDWI), air temperature (AT), and precipitation. NDVI reduced salt accumulation by lowering evaporation and stabilizing soil moisture, while NDWI reflected precipitation-driven dilution and leaching. Temperature influenced salinity indirectly by regulating NDVI and NDWI. SEM confirmed NDVI and NDWI had direct effects on EC, while AT and precipitation acted indirectly. Model validation showed high accuracy and adaptability, with R-squared (R²), Nash–Sutcliffe efficiency coefficient (NSE), and Kling–Gupta Efficiency (KGE) values of 0.93, 0.94, and 0.89 for training and 0.86, 0.85, and 0.79 for validation, respectively. After DTW optimization, R² improved by 0.12–0.22, NSE by 0.07–0.18, and KGE by 0.02–0.12, demonstrating significant performance gains. The framework demonstrated strong migration capability across different soil types and vegetation covers, achieving R² of 0.73–0.96, The root mean squared error (RMSE) of 1–20, and residual prediction deviation (RPD) of 1.22–1.95. This study highlights the dominant role of climate-ecological interactions in salinity regulation and offers a robust, transferable method for multi-temporal salinity prediction. The findings provide critical insights for precision soil salinity management, sustainable agriculture, and climate resilience strategies, particularly in regions vulnerable to salinization.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100266"},"PeriodicalIF":7.8,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tracking terbium metabolism in China with implications for its dominance in global rare earth supply","authors":"Wei Liu ,&nbsp;Wuhu Guo ,&nbsp;Jiaming Chen ,&nbsp;Shuhui Peng ,&nbsp;Lele Ru ,&nbsp;Yuejin Chen ,&nbsp;Zanxu Chen ,&nbsp;Dan Wang ,&nbsp;Shijie Dai ,&nbsp;Wending Huang ,&nbsp;Zhiwen Li ,&nbsp;Evgeny Abakumov ,&nbsp;Wenjuan Wang ,&nbsp;Yanqi Liu ,&nbsp;Xiaowen Ji ,&nbsp;Shuoyao Lian ,&nbsp;Huoqing Xiao ,&nbsp;Zugen Liu ,&nbsp;Hannan Ahmad Anjum ,&nbsp;Xianchuan Xie","doi":"10.1016/j.resenv.2025.100263","DOIUrl":"10.1016/j.resenv.2025.100263","url":null,"abstract":"<div><div>Terbium (Tb), a critical heavy rare earth element, faces intensifying supply–demand imbalances driven by its irreplaceable role in green technologies and geopolitical supply chain complexities. To explore sustainable pathways for Tb, this study establishes a spatially and temporally explicit material flow analysis framework to map Tb’s life cycle dynamics across China’s socioeconomic systems (1990–2024) and global trade networks. Results reveal that Asia and Europe as pivotal hubs, with China dominating 68.57% (1.05 × 10⁴ t) of global Tb flows, primarily channeled into phosphors (peaking at 74.5% in 2007) and permanent magnets (90% of post-2021. Historically, Tb flows have been closely tied to industrial product cycles. From 1990 to 2024, approximately 1.16 × 10⁴ t of Tb were mined and processed into various end-use products. Fluorescent lamps were historically the dominant end use; however, since 2014, permanent magnets have become precedence, accounting for 90% of the market flow in 2024, followed by new energy technologies and household appliances. Tb demand in the new energy sector is expected to exceed that of household appliances and become the main driver of consumption. Therefore, the most significant potential for Tb recovery resides in fluorescent lamps and home appliances, which account for 63% of total recovery in 2023. However, an urgent imperative exists for the proactive development of systematic recycling industries to address the imminent surge in end-of-life products such as wind turbines and new energy vehicles. To achieve global sustainability of Tb, technology-accelerated pathways urgently require diversified supply sources and innovations in industrial-scale recycling.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100263"},"PeriodicalIF":7.8,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145019566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel hydrolase biomanufacturing-driven strategy for boosting production of volatile fatty acids and vivianite in iron-rich waste activated sludge fermentation","authors":"Xiaodong Xin ,&nbsp;Linjuan Li ,&nbsp;Boyu Lu ,&nbsp;Lei Liu ,&nbsp;Liguo Zhang ,&nbsp;Yue Yang ,&nbsp;Wei Li ,&nbsp;Qian Liu ,&nbsp;Junguo He ,&nbsp;Ganfeng He ,&nbsp;Sihao Lv ,&nbsp;Wangwang Yan ,&nbsp;Liwen Luo","doi":"10.1016/j.resenv.2025.100264","DOIUrl":"10.1016/j.resenv.2025.100264","url":null,"abstract":"<div><div>Efficient sludge pretreatment methods that minimize reliance on costly chemical or energy inputs have garnered significant attention, as waste-activated sludge (WAS) disposal occupied nearly 50% of operational expenses in wastewater treatment plants (WWTPs) which displayed a poor sustainability in current practices. In this study, a novel strategy utilizing bio-manufactured hydrolases (primarily protease and <span><math><mi>α</mi></math></span>-amylase, produced by <em>Aspergillus oryzae</em> based on waste molasses cultivation) was proposed to enhance the solubilization of iron-rich WAS by releasing biodegradable organic matters [a net soluble chemical oxygen demand (COD) of 840 ± 14 mg/L release after 8 h] and disrupting extracellular polymeric substances (EPS) via loosing EPS proteins structure and increase hydrophilicity. The volatile fatty acids (VFAs) production reached a peak level of 4380 ± 24.6 mg COD/L, accompanied by an optimal orthophosphate release of 7.79 ± 0.31 mg/L through fermentation enhanced by such enzymatic pretreatment. Moreover, the relative fraction of P in vivianite, assessed as non-apatite inorganic phosphorous (NAIP), increased by 10.12%. The bio-manufactured hydrolases not only enhanced overall microbial diversity, but also enriched key microbial populations—including​ hydrolyzing bacteria (e.g. <em>Chloroflexi</em> and <em>Actinobacteria</em>), major acidogens (e.g. <em>Petrimonas</em>, <em>Jeotgalibaca</em>, <em>Proteiniclasticum</em>, and <em>Macellibacteroides</em>), and iron-reducing genera (i.e. <em>Ercella</em> and <em>Desulfovibrio</em>). Furthermore, this strategy upregulated the relative abundance of functional genes related to carbohydrate and amino acid metabolism, and reduced the competitive interference of Ca<span><math><msup><mrow></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup></math></span> ions on soluble phosphorus availability by favoring Fe(II)-P complexation, thereby synergistically enhancing VFAs production and vivianite formation. This study presents an efficient, economically favorable pretreatment strategy to enhance the recovery of carbon (C) and phosphorus (P) from iron-rich WAS, with demonstrating a strong application sustainability.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100264"},"PeriodicalIF":7.8,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145010245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}