Resources Environment and Sustainability最新文献

Ecological risks of combination of multiple pollutants at environmentally relevant concentrations: Insights from the changes in life history traits, gut microbiota, and transcriptomic responses in Daphnia magna 多种污染物在环境相关浓度下组合的生态风险：来自大水蚤生活史特征、肠道微生物群和转录组反应变化的见解

IF 7.8 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-12-01 DOI: 10.1016/j.resenv.2025.100281

Qiuxuan Sun , Songying Dai , Yunfei Dai , Yunfei Sun , Jin-Sol Lee , Kai Lyu , Jae-Seong Lee , Zhou Yang

Aquatic organisms are normally exposed to waters where multiple pollutants coexist. Although the concentration of each single pollutant in natural waters is extremely low and may not have harmful effects, the combined effects of multiple low concentration pollutants may cause substantial harm to Daphnia. Therefore, we selected 11 kinds of pollutants including microplastics, antibiotics, heavy metals, agricultural and industrial pollutants, and then exposed Daphnia magna to the combination of these pollutants at the environmental concentrations (ng L⁻¹-μg L⁻¹ range) to evaluate the possible negative effects. Results showed the combination of multiple pollutants significantly decreased heart rate, body size, survival, and fecundity of D. magna and delayed maturation. In the filial generation constantly exposed to the pollutant combination, the growth, survival, and reproduction further decreased. The diversity of the gut microbiota decreased, but the abundance of bacteria with functions related to xenobiotics degradation increased under the pollutant combination. The expressions of genes related to antioxidant, xenobiotics catabolism, and energy absorption were upregulated by the pollutant combination, with downregulating expressions of the genes related to cell division and nitrogen metabolism, which reveals the underlying mechanism of the harmful effects of multiple pollutants on life history traits of D. magna. This study demonstrated the ecological risks of multiple pollutants at environmentally relevant concentrations to D. magna, providing a new perspective for evaluating the consequences of low environmental pollution in natural waters.

水生生物通常暴露在多种污染物共存的水域中。虽然天然水体中每种单一污染物的浓度极低，可能不会产生有害影响，但多种低浓度污染物的综合作用可能对水蚤造成实质性危害。因此，我们选择了包括微塑料、抗生素、重金属、农业和工业污染物在内的11种污染物，并在环境浓度（ng L−1 ~ μg L−1范围内）将大水蚤暴露于这些污染物的组合中，以评估可能产生的负面影响。结果表明，多种污染物的组合显著降低了大鼠的心率、体型、存活率和繁殖力，并延迟了成熟时间。在不断暴露于污染物组合的子代中，生长、生存和繁殖进一步下降。在污染物组合下，肠道菌群的多样性下降，但具有外源降解相关功能的细菌丰度增加。污染物组合上调了抗氧化、外源分解代谢和能量吸收相关基因的表达，下调了细胞分裂和氮代谢相关基因的表达，揭示了多种污染物对D. magna生命史性状有害影响的潜在机制。本研究揭示了多种污染物在环境相关浓度下对D. magna的生态风险，为自然水体低环境污染后果评价提供了新的视角。

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引用次数: 0

Technology to utilise and suppress weeds for sustainable maize production 玉米可持续生产的杂草利用和抑制技术

IF 7.8 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-12-01 DOI: 10.1016/j.resenv.2025.100279

Kaixian Wu , Shiyong Zhou , Guang Zeng , Hongli Yang , Bozhi Wu

Throughout agricultural history, controlling weeds to prevent yield loss has been a longstanding focus. However, a practical technology that leverages weeds as a beneficial biological resource without compromising crop yields has remained elusive. Our study proposes and evaluates an innovative integrated technology to utilise and suppress weeds (ITUSW) for sustainable maize cultivation. In brief, maize was planted in ultrawide rows (100 cm apart) with two plants per hill on strip-tillage beds. Interrow weeds were allowed to grow naturally. These weeds were mowed during the seedling, tillering, and flowering stages. The mowed material, combined with the previous year's maize stover that was laid on the interrows, was then used as mulch over the maize rows and eventually returned to the soil through the practice of strip-tillage. Our five-year field study suggest that maize yields under the ITUSW treatment did not differ from those achieved by the plastic film mulching for weeding (MFW), chemical weeding (CW), chemical weeding plus straw return (CWSR), and mechanical weeding by hand hoeing (MHW)(p > 0.05) treatments, yet they significantly surpassed those of the chemical weeding combined with straw mulching (CWSM)(p < 0.05) treatment. Importantly, the above-ground intra-row weed biomass under the ITUSW was notably reduced compared to the MFW treatment, resembling the levels observed in other treatments. Conversely, the inter-row weed biomass experienced substantial increases of up to 448 g/m² through maize growth season, specifically by 9.89-, 5.14-, 4.36-, and 3.51-fold in contrast to the SWSM, CW, MHW, and MFW, treatments respectively (p < 0.05). Our series of supplementary experiments confirmed that weeds beyond a 25 cm radius do not induce yield loss (p < 0.05). Moreover, ITUSW designed with a wide row layout, strip tillage, inter-row weed mowing, and intra-row weed mulching eliminated competition from inter-row weeds and achieved the resource utilisation of inter-row weeds, such as soil improvement and biomass mulching. Besides, ITUSW is compatible with winter crops such as wheat. Consequently, ITUSW shows potential to replace chemical herbicides in maize production, and weeds are redefined from foes to allies, propelling agriculture towards enhanced sustainability.

纵观农业历史，控制杂草以防止产量损失一直是一个长期关注的焦点。然而，利用杂草作为一种有益的生物资源而不影响作物产量的实用技术仍然难以实现。我们的研究提出并评价了一种创新的综合利用和抑制杂草技术（ITUSW），用于玉米的可持续种植。简而言之，玉米以超宽行（间隔100厘米）种植，每山两株，在带状耕作床上种植。杂草被允许自然生长。这些杂草在幼苗、分蘖和开花阶段被修剪。割下的材料，加上前一年铺在玉米垄上的玉米秸秆，然后被用作玉米垄的覆盖物，最后通过条带耕作的做法返回土壤。5年田间研究表明，ITUSW处理玉米产量与地膜除草（MFW）、化学除草（CW）、化学除草加秸秆还田（CWSR）和手锄机械除草（MHW）处理差异不显著（p > 0.05），但显著优于化学除草加秸秆覆盖（CWSM）处理（p < 0.05）。重要的是，与MFW处理相比，ITUSW处理的地上行内杂草生物量显著减少，与其他处理的水平相似。相反，玉米生长季行间杂草生物量显著增加，最高达448 g/m2，分别比SWSM、CW、MHW和MFW处理增加了9.89倍、5.14倍、4.36倍和3.51倍（p < 0.05）。我们的一系列补充试验证实，半径超过25 cm的杂草不会导致产量损失（p < 0.05）。此外，ITUSW采用宽行布局、条形耕作、行间除草和行内杂草覆盖设计，消除了行间杂草的竞争，实现了行间杂草的资源利用，如土壤改良和生物质覆盖。此外，ITUSW与小麦等冬季作物兼容。因此，ITUSW显示了在玉米生产中取代化学除草剂的潜力，杂草被从敌人重新定义为盟友，推动农业向增强可持续性发展。

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引用次数: 0

In-situ synthesizing CoONAl-C catalysts from spent LiCoO2 batteries and tobacco stems biomass: nearly 100 % peroxymonosulfate utilization 从废LiCoO2电池和烟草茎生物质中原位合成CoONAl-C催化剂：近100%过氧单硫酸盐利用率

IF 7.8 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-11-07 DOI: 10.1016/j.resenv.2025.100280

Teng Guo , Xiaoya Gao , Xingxin Yang , Jiatian Wang , Yucheng Yin , Yaoran Hu , Yue Luo , Yongming Luo

Strategic metal recovery from spent lithium-ion batteries (LIBs) is urgently required novel technologies with high efficiency, low environmental impact, and strong economic viability. This study proposes a tobacco stems biomass assisted strategy that directly converts spent LiCoO₂ into advanced functional Co-based catalyst in water treatment. Benefited from the biomass pyrolysis, Co-based catalyst was first in-situ doped with metal (Al) and non-metal (C and N) to obtain CoON_Al-C catalysts. The prepared CoON_Al-C achieved nearly 100 % peroxymonosulfate (PMS) utilization efficiency, which exhibited a persulfate per mass pollutants normalized kinetic rate constant surpassing reported water treatment systems by 2–42 times. The co-doping of metal (Al) and non-metal (C and N) not only shortened the bond length between PMS and Co-O but also upward shifted the d-band center close to Fermi-level. The alteration of Co active sites' electronic distribution via Co-N coordination, combined with loading and reduction of biomass pyrolysis, significantly promoted Co(II)/Co(III) redox cycles. This synergy boosted PMS adsorption-activation and Fenton-like catalytic activity, ultimately driving O-O bond cleavage to generate reactive oxygen species for efficient degradation of emerging contaminants. Moreover, the practical applicability of CoON_Al-C was supported by its high stability over seven cycles, minimal ion leaching, reduced toxicity of intermediates, and effective operation in real water samples. This study addressed the high PMS consumption bottleneck in water treatment, contributing to the sustainable utilization of spent LIBs and waste biomass.

从废旧锂离子电池（LIBs）中战略性回收金属，迫切需要高效、低环境影响、经济可行性强的新技术。本研究提出了一种烟草茎生物质辅助策略，直接将废LiCoO2转化为高级功能性co基催化剂用于水处理。得益于生物质热解，co基催化剂首先原位掺杂金属（Al）和非金属（C和N），得到CoONAl-C催化剂。制备的CoONAl-C对过氧单硫酸盐（PMS）的利用率接近100%，每质量污染物的过硫酸盐归一化动力学速率常数是现有水处理系统的2-42倍。金属（Al）和非金属（C和N）的共掺杂不仅缩短了PMS与Co-O之间的键长，而且使d带中心向上移动，接近费米能级。通过Co- n配位改变Co活性位点的电子分布，结合生物质热解的加载和还原，显著促进Co(II)/Co（III）氧化还原循环。这种协同作用提高了PMS吸附活化和fenton类催化活性，最终推动O-O键裂解产生活性氧，从而有效降解新出现的污染物。此外，CoONAl-C在7次循环中具有很高的稳定性，离子浸出最小，中间体毒性降低，并且在实际水样中有效运行，这支持了它的实用性。该研究解决了水处理中PMS消耗高的瓶颈，有助于废lib和废生物质的可持续利用。

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引用次数: 0

High-efficiency and green recycling of manganese, nickel, cobalt, and zinc in a hydrogen peroxide–sulfuric acid system from electrolytic manganese dioxide sulfide slag 在双氧水-硫酸体系中从电解硫化锰渣中高效、绿色回收锰、镍、钴和锌

IF 7.8 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-11-03 DOI: 10.1016/j.resenv.2025.100278

Panpan Mu (穆攀攀) , Meichen Pan (潘美晨) , Zixiu Li (李子秀) , Guosai Jiang (蒋国赛) , Zhe Tan (谭哲) , Xiaoguang Zhang (张晓光) , Gang Fang (方刚) , De'an Pan (潘德安)

Electrolytic manganese dioxide sulfidation slag (EMDSS) is a hazardous waste generated during the production of electrolytic manganese dioxide (EMD), containing strategic metal resources such as nickel (Ni), cobalt (Co), and manganese (Mn), with a total content exceeding 10.00 %. Currently, the recovery of strategic metals from EMDSS has received limited attention, and existing methods are inefficient, accompanied by the risk of H₂S gas generation. This study proposes a hydrogen peroxide-sulfuric acid (H₂O₂-H₂SO₄) leaching process to address these challenges and recover strategic metals such as Mn, Ni, Co, and zinc (Zn) from EMDSS. Optimal process parameters were determined through single-factor and response surface optimization experiments. Thermodynamic, kinetic, and characterization analyses were conducted to elucidate the reaction process and mechanism of H₂O₂-H₂SO₄ leaching. In an acidic environment, sulfide ion (S²⁻) and oxygen ion (O⁻) exhibit strong redox reactivity, directly converting into sulfate ion (SO₄²⁻) without generating hydrogen sulfide (H₂S) gas. The 20 × magnified experiments demonstrated that the average leaching rates of Mn, Ni, Co, and Zn exceeded 99.20 %, with deviations between the measured and predicted values within 1.00 %. The proposed new process achieves over 99.00 % recovery of strategic metals such as Ni, Co, Mn, and Zn, providing raw materials for the subsequent resource utilization of strategic metals. Moreover, stable large-scale experimental results indicate its potential for industrial-scale application, expanding the raw material sources for Ni, Co, and Mn new energy metals.

电解二氧化锰硫化渣（EMDSS）是电解二氧化锰（EMD）生产过程中产生的危险废弃物，含有镍（Ni）、钴（Co）、锰（Mn）等战略性金属资源，总含量超过10.00%。目前，从EMDSS中回收战略金属受到的关注有限，现有方法效率低下，并且存在产生H2S气体的风险。本研究提出了一种过氧化氢-硫酸（H2O2-H2SO4）浸出工艺，以解决这些挑战，并从EMDSS中回收Mn， Ni， Co和锌（Zn）等战略金属。通过单因素试验和响应面优化试验确定了最佳工艺参数。通过热力学、动力学和表征分析，阐明了H2O2-H2SO4浸出的反应过程和机理。在酸性环境中，硫离子（S2−）和氧离子（O−）表现出较强的氧化还原活性，直接转化为硫酸盐离子（SO42−），不产生硫化氢（H2S）气体。20倍放大实验表明，Mn、Ni、Co、Zn的平均浸出率均超过99.20%，实测值与预测值偏差在1.00%以内。新工艺对Ni、Co、Mn、Zn等战略金属的回收率达到99.00%以上，为后续战略金属资源化利用提供了原料。此外，稳定的大规模实验结果表明其具有工业规模应用的潜力，扩大了Ni， Co和Mn新能源金属的原料来源。

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引用次数: 0

Optimizing the use of pyrolysis waste oil as a feedstock for the naphtha cracking process by hydrotreating and hydrocracking 优化利用热解废油作为石脑油加氢处理加氢裂化工艺的原料

IF 7.8 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-10-26 DOI: 10.1016/j.resenv.2025.100277

Suk Hyun Lim , Hai Hung Pham , Eun Hee Kwon , Nam Sun Nho

In this study, a process using hydroprocessing technology was investigated to utilize waste plastic pyrolysis oil (WPPO) produced from a 10-ton/day commercial rotary kiln pyrolysis reactor as feedstock for the naphtha cracking center (NCC) process. Experiments were conducted using two continuous processes with different capacities to perform hydroprocessing and hydrocracking reactions. Reactivity according to feedstock processing, reaction stages, and process configuration, as well as the effects of process operating variables, were evaluated. Hydrocracking of the hydrotreated WPPO was found to result in particularly high performance compared to the single hydrocracking reaction alone. As the reaction severity increased, the yield and impurity reduction improved, finally achieving an impurity content close to commercial naphtha and a naphtha yield of approximately 93.3 wt%. Additionally, hydrogen consumption was confirmed to be comparable to that in conventional oil refineries. This study confirmed that the operating conditions can be adjusted according to the desired yield and impurity content levels or the feed ratio to the NCC process, to select the appropriate operating conditions, and that commercial-level naphtha or naphtha suitable for the specifications of the NCC process can be produced from WPPO.

以10吨/天商业回转窑热解反应器生产的废塑料热解油（WPPO）为原料，采用加氢工艺进行了石脑油裂解中心（NCC）工艺研究。实验采用两种不同容量的连续工艺进行加氢加工和加氢裂化反应。根据原料处理、反应阶段和工艺配置以及工艺操作变量的影响，对反应性进行了评估。经加氢处理的WPPO加氢裂化反应与单独加氢裂化反应相比，具有特别高的性能。随着反应强度的增加，收率和杂质降低率提高，最终得到的杂质含量接近商品石脑油，石脑油收率约为93.3 wt%。此外，氢的消耗被证实与传统炼油厂相当。本研究证实，可根据期望的产率和杂质含量水平或NCC工艺的进料比调整操作条件，选择合适的操作条件，从WPPO中可以生产出商品级或适合NCC工艺规格的石脑油。

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引用次数: 0

Gastrointestinal modification based on probiotic feed additive enviro-alleviators to reduce enteric methane production in ruminant and non-ruminant livestock 基于益生菌饲料添加剂环境缓解剂的胃肠道改造以减少反刍和非反刍牲畜肠道甲烷的产生

IF 7.8 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-10-15 DOI: 10.1016/j.resenv.2025.100276

Benjamin Ndeshipanda Kashenye , Jiachao Zhang

Abatement of livestock enteric-produced methane (CH₄) has become an avenue of interest to improve global economical and environmental burdens. Among these approaches, probiotic feed additives (PFAs) are increasingly pointed out in literature to potentially facilitate effective gastrointestinal tract (GIT) microbiome manipulation. These modulations aim to improve enteric fermentation without harming livestock health or productivity, while also reducing CH₄ emissions to help ease food supply chain pressures. Agricultural by-product wastes have increased over the previous three decades, and notably, PFAs are also proposed as livestock feedstuff nutrient availability enhancers. While numerous studies have examined the effects of PFAs on fermentation parameters, direct comparative investigations into their specific impact on GIT CH₄ profiles across both ruminant and non-ruminant species remain limited in literature. Herein, we characterize and summarize the CH₄ status reported by previous studies based on dictating GIT fermentative parameters of ruminants and non-ruminants supplemented with PFAs, along with their corresponding comparable CH₄-reducing mechanism pathway. Simultaneously, we also evaluate PFA species for their potential to reduce enteric-produced CH₄ in livestock, alongside their intricate optimizing implications and delivery efficacy within farming systems. Justifiably, livestock productivity remains vital, as farming remains an essential practice for humans to derive dietary commodities. This review provides connected insights into existing gaps and prospective opportunities to better understand host-microbiome interactions in reducing agricultural CH₄ emissions, aiding farmers to better grasp the application potential of PFAs as a possible sustainable practice for future livestock-derived food security.

减少家畜肠道产生的甲烷（CH4）已成为改善全球经济和环境负担的重要途径。在这些方法中，越来越多的文献指出益生菌饲料添加剂（PFAs）可能有助于有效地控制胃肠道（GIT）微生物群。这些调节的目的是在不损害牲畜健康或生产力的情况下改善肠道发酵，同时减少甲烷排放，以帮助缓解食品供应链的压力。在过去的三十年中，农业副产品废物有所增加，值得注意的是，PFAs也被提出作为牲畜饲料的营养有效性增强剂。虽然已有大量研究考察了PFAs对发酵参数的影响，但文献中对其对反刍动物和非反刍动物GIT CH4谱的具体影响的直接比较研究仍然有限。本文在确定添加PFAs的反刍动物和非反刍动物的GIT发酵参数的基础上，对以往研究报道的CH4状态进行了表征和总结，并对其对应的CH4还原机制途径进行了比较。同时，我们还评估了PFA物种减少牲畜肠道产生CH4的潜力，以及它们在农业系统中复杂的优化意义和输送效率。有理由认为，牲畜生产力仍然至关重要，因为农业仍然是人类获取膳食商品的基本做法。这篇综述提供了对现有差距和未来机会的相关见解，以更好地了解宿主-微生物组在减少农业CH4排放中的相互作用，帮助农民更好地掌握PFAs的应用潜力，作为未来牲畜来源的粮食安全的一种可能的可持续做法。

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引用次数: 0

Integrating deep learning with patch-based multilevel cellular automata for urban growth simulation: A case study of the Pearl River Delta urban agglomeration 融合深度学习与基于斑块的多层次元胞自动机的城市增长模拟——以珠三角城市群为例

IF 7.8 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-09-30 DOI: 10.1016/j.resenv.2025.100275

Hongjiang Guo, Yanpeng Cai, Zixuan Qi, Bowen Li, Dianheng Jiang

Accurate modeling of urban spatial dynamics is crucial for regional land resource allocation and sustainable development. However, most existing studies lack spatiotemporal collaborative considerations of historical development processes when mining transition rules for cellular automata (CA)-based modeling. Traditional pixel-based spatial units also tend to produce fragmented simulation results that are inconsistent with reality. To address these gaps, this study proposed a novel spatiotemporal collaborative convolutional and patch-based multilevel CA (SC-Pb-CA) model and applied it to simulate urban growth in the Pearl River Delta (PRD) urban agglomeration. The results revealed that the SC-Pb-CA model outperformed the other traditional hybrid models in terms of simulation accuracy, with the kappa and figure of merit (FoM) indices increasing by 0.011–0.049 and 3.9 %–28 %, respectively. Multiscenario simulations indicated that the urban expansion trend in the PRD region remains significant in the future, particularly under the economic development priority (EDP) scenario, with projected increases reaching 17.86 × 10⁴ ha, 30.23 × 10⁴ ha, and 48.12 × 10⁴ ha by 2025, 2035, and 2050, respectively. The integrated economic–ecological development (IEED) scenario resulted in an urban land area of 80.34 × 10⁴ ha by 2035, which does not exceed the 1.3-fold upper limit stipulated in regional planning, making it more aligned with future sustainable development requirements. These findings emphasize the need for coordinated regional ecological and economic development. They also revealed the importance of strategies such as infilling development, cross-regional coordination, and ecological reflux for promoting sustainable urban spatial development in the PRD. This study provides new theoretical support for urban expansion simulation research and offers scientific guidance for regional urban spatial planning.

准确的城市空间动态建模对区域土地资源配置和可持续发展至关重要。然而，大多数现有研究在挖掘基于元胞自动机（CA）的建模转换规则时，缺乏对历史发展过程的时空协同考虑。传统的基于像素的空间单元也容易产生碎片化的模拟结果，与现实不一致。为了解决这些问题，本研究提出了一种基于时空协同卷积和斑块的多层CA （SC-Pb-CA）模型，并将其应用于珠江三角洲城市群的城市增长模拟。结果表明，SC-Pb-CA模型在仿真精度上优于其他传统混合模型，kappa和FoM指数分别提高0.011 ~ 0.049和3.9% ~ 28%。多情景模拟结果表明，在经济发展优先（EDP）情景下，珠三角地区未来的城市扩张趋势仍然明显，预计到2025年、2035年和2050年，珠三角地区的城市扩张将分别达到17.86 × 104 ha、30.23 × 104 ha和48.12 × 104 ha。经济生态一体化发展情景下，2035年城市用地面积为80.34 × 104 ha，不超过区域规划1.3倍的上限，更符合未来可持续发展要求。这些研究结果强调了区域生态与经济协调发展的必要性。研究还揭示了填充发展、跨区域协调和生态回流等战略对促进珠三角城市空间可持续发展的重要性。该研究为城市扩展模拟研究提供了新的理论支持，为区域城市空间规划提供了科学指导。

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引用次数: 0

Calcium-rich bone biochar boosts fat, oil, and grease (FOG) biodegradability: Methane maximization and microbial community pattern 富钙骨生物炭提高脂肪、油和油脂（FOG）的可生物降解性：甲烷最大化和微生物群落模式

IF 7.8 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-09-26 DOI: 10.1016/j.resenv.2025.100274

Ting Li , Shah Faisal , Jialing Tang , Mahdy Elsayed , Nousheen Iqbal , Ye Pu , Joachim Henjes , Stephan Ende , Abdelfatah Abomohra

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 Firmicutes and Campylobacteriotes, accompanied by a simultaneous rise in Methanosarcina at 0.5 % PB (from 23.7 % to 78.1 %) and Methanoculleus 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.

本研究评估了从猪和鸡骨头中提取的富钙骨生物炭，以增强对FOG（脂肪、油、油脂）的厌氧消化。该研究旨在通过减少长链脂肪酸（LCFAs）的负面影响来最大化能量回收，并评估其对微生物群落结构的后续影响。制备了一系列2.0% FOG批量试验，根据猪骨生物炭（PB）和鸡骨生物炭（CB）的钙含量分别添加，以维持（0.1、0.5和1.0%的钙浓度）。同时，在不使用生物炭的情况下，在相同浓度下使用Ca。添加0.5%的PB、CB和Ca分别提高了LCFAs的降解率，分别达到81.6%、81.0%和84.8%。因此，累积甲烷产量比对照FOG2.0 %分别提高了4倍、3.9倍和5.2倍。1.0%的PB、CB和Ca与0.5%相比，甲烷产量减少，但有趣的是，1.0%的PB和CB的累积甲烷产量分别为135.6 mL g−1 VS和125.3 mL g−1 VS，高于Ca （60.7 mL g−1 VS）。厚壁菌门（Firmicutes）和弯曲菌门（campylobacteria）的数量增加，同时在0.5% PB条件下Methanosarcina（从23.7%增加到78.1%）和0.5% Ca条件下Methanoculleus（从41.3%增加到50.0%）的数量也增加。富钙PB和CB生物炭通过减少抑制、刺激微生物、促进电子转移和改善养分供应等协同机制显著促进FOG厌氧消化。使用动物骨骼残留物进行FOG厌氧消化既提供了可持续的废物管理途径，又提供了有效的富钙材料，以促进能量回收。

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引用次数: 0

Environmental advantages of green-labelled navel oranges in China: A supply chain perspective 绿色标签脐橙在中国的环境优势：供应链视角

IF 7.8 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-09-25 DOI: 10.1016/j.resenv.2025.100273

Ruijin Luo , Junhan Zhang , Petronella Margaretha Slegers , Minghao Zhuang , Zhihua Zhang , Xian Zhang , Xuexian Li , G.D.H. Claassen

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.

通过生命周期评估量化柑橘供应链（SCs）的环境绩效（EP）对于优化水果生产，以更低的环境成本提供充足的维生素和微量营养素非常重要。作为中国国家计划的一部分，绿色脐橙使用的化学氮肥减少了50.0%，并因其高品质而越来越受欢迎。然而，从全生态系统的角度来看，它们的EP仍不清楚，而生态毒性和土地占用潜力（LOP）等关键指标在以往的研究中大多被忽视。基于对橙色SC （OSC）利益相关者的访谈，本研究分析了11个ReCiPe2016 (H)中点指标，并对特征结果进行了归一化，随后进行了蒙特卡罗模拟，以比较传统，绿色标签和有机标签的OSC从生产到消费的EP。绿色标签的osc在大多数类别中显示出较低的影响。具体而言，与有机标记的海洋有机化合物相比，它们的LOP降低了72.6%，与传统海洋有机化合物相比，臭氧消耗潜力降低了65.5%。它们的总环境指数分别比传统的和有机标签的OSCs低31.4%和24.5%。包装、运输和生产是重要的贡献阶段。关键的贡献投入包括氮肥、瓦楞纸箱、长途运输和土地利用。除了公认的化石燃料潜力之外，陆地生态毒性潜力和LOP是最近确定的盐含量评价的关键指标。因此，绿色标签osc代表了一种更环保的高产优质水果供应模式。这种多阶段、多指标的方法为水果SCs的综合评估和优化提供了一个可转移的框架，以实现可持续水果供应和环境管理。

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引用次数: 0

A meta-analysis of feeding strategies for dairy cattle performance and greenhouse gas mitigation across the world 全球奶牛生产性能和温室气体减排的饲养策略荟萃分析

IF 7.8 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-09-21 DOI: 10.1016/j.resenv.2025.100271

Aurele Gnetegha Ayemele , Josy Karel Ngueuyim Nono , Herbert Gnetegha Fotsidie , Mbezele Junior Yannick Ngaba , Mekonnen Tilahun , Lu Ma , Dengpan Bu , Jianchu Xu

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.

关于牛饲养策略对温室气体排放影响的研究是零散的，无法提供全球比较的饲养管理做法，这些做法可以在大幅减少甲烷（CH4）和氨（NH3）排放的同时实现最佳生产。本研究解释了饲粮组成和结构、饲料管理、育种、动物实验设计和CH4测量工具对肠道CH4、NH3缓解和奶牛产奶性能的影响。我们从最初筛选的4394篇论文中对80种治疗方法的效果进行了荟萃分析，并保留了分布在四大洲15个国家的31篇文章。饲料添加剂类型中的矿物质提高产奶量最多（90%），同时减少甲烷产量33%。饲料添加剂添加量在1 ~ 4%之间也有助于提高产奶量47%，减少甲烷58%。同时，3-硝基氧丙醇（3-NOP）饲料添加剂对健康安全的影响仍存在争议。虽然部分混合日粮系统对产奶量贡献很大（102%），但它对减少CH4的贡献不如完全混合日粮系统（39%）。采用GreenFeed（80%）和旋转实验设计（37%）记录的CH4减少水平最高。荷斯坦牛品种产量更高，产奶量增加46%，CH4减少34%。草料使NH3增加5%，而作物饲料使NH3减少21%。农业可以通过涉及多个部门的协调一致的全球努力，有效地减少排放，为实现气候中和目标作出贡献。

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引用次数: 0