Resources Environment and Sustainability最新文献

{"title":"Long–term application of agricultural amendments regulate the assembly of different bacterial sub–communities and growth of multi–species biofilms in paddy soils","authors":"Sheng Zhao ,&nbsp;Yi Wen ,&nbsp;Hao Sheng ,&nbsp;Junpeng Lou ,&nbsp;Chuan Peng ,&nbsp;Yu Jiang ,&nbsp;Yuqing Tang ,&nbsp;Shanpeng Liu ,&nbsp;Kai Ouyang","doi":"10.1016/j.resenv.2025.100287","DOIUrl":"10.1016/j.resenv.2025.100287","url":null,"abstract":"<div><div>Long–term agricultural amendments are widely employed to enhance soil quality and ecological sustainability. However, their effects on the assembly processes of bacterial sub–communities and on multispecies biofilm development remain poorly understood. In a seven–year field experiment, we investigated the impact of lime (L) and organic fertilizer (OF) amendments on the assembly mechanisms of abundant, moderate, and rare bacterial taxa in paddy soil, as well as on the formation and growth of multispecies biofilms. Our results demonstrated that both amendments significantly increased biofilm biomass, enhancing biofilm thickness by 0.72– to 1.33–fold, and shifted microbial niche adaptation. Assembly processes, assessed via the Normalized Stochasticity Ratio (NST), exhibited contrasting patterns among taxa: for the whole and rare bacterial communities, NST increased from 45.3 % to 68.9 % and from 48.3 % to 71.3 % under OF, and from 44.3 % to 55.7 % and from 47.8 % to 57.2 % under L, indicating a shift from deterministic toward stochastic process. In contrast, moderate taxa showed decreased stochasticity, with NST declining from 70.0 % to 43.2 % under OF and from 77.4 % to 58.3 % under L. Organic fertilization also enhanced soil multifunctionality by 2.37–fold and increased bacterial network complexity by 77 %. Soil pH was identified as the key driver governing both bacterial community assembly and multispecies biofilm growth. These findings provide novel insights into how long–term agricultural amendments modulate biofilm dynamics and bacterial assembly processes in soil ecosystems.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"23 ","pages":"Article 100287"},"PeriodicalIF":7.8,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928560","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":"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","authors":"Qiuxuan Sun ,&nbsp;Songying Dai ,&nbsp;Yunfei Dai ,&nbsp;Yunfei Sun ,&nbsp;Jin-Sol Lee ,&nbsp;Kai Lyu ,&nbsp;Jae-Seong Lee ,&nbsp;Zhou Yang","doi":"10.1016/j.resenv.2025.100281","DOIUrl":"10.1016/j.resenv.2025.100281","url":null,"abstract":"<div><div>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 <em>Daphnia</em>. Therefore, we selected 11 kinds of pollutants including microplastics, antibiotics, heavy metals, agricultural and industrial pollutants, and then exposed <em>Daphnia magna</em> 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 <em>D. magna</em> 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 <em>D</em>. <em>magna</em>. This study demonstrated the ecological risks of multiple pollutants at environmentally relevant concentrations to <em>D</em>. <em>magna</em>, providing a new perspective for evaluating the consequences of low environmental pollution in natural waters.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100281"},"PeriodicalIF":7.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145690900","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":"Nonlinear threshold effects of territorial space use on land ecological security along China's land borders: a multi-scale zonal governance pathway","authors":"Guobin Ma ,&nbsp;Rucheng Lu ,&nbsp;Tongsheng Fan ,&nbsp;Pengcheng Wang ,&nbsp;Yiyun Li","doi":"10.1016/j.resenv.2025.100282","DOIUrl":"10.1016/j.resenv.2025.100282","url":null,"abstract":"&lt;div&gt;&lt;div&gt;TSU (territorial space use) constitutes the foundational behavior of human economic and social activities upon the land. Investigating the threshold effect of multi-scale TSU on LES (land ecological security) is essential for scientifically constructing a border ecological barrier management system within the framework of integrated development and security planning. Currently, spatial governance of territorial space in China's border areas utilizes the \"three districts and three lines\" as its core framework, implementing rigid spatial controls through the ecological protection red line, cultivated land and permanent basic farmland boundaries, and the urban development boundary. Concurrently, the main functional area strategy is employed to promote differentiated development. However, these border areas face dual pressures stemming from ecological fragility and intensive human activity: the northern border is threatened by ecological degradation in arid regions; soil erosion affects more than half of the northwest border area; and rocky desertification in the southwest border region contributes to the desertification of cultivated land and the loss of soil fertility. Consequently, a significant spatial mismatch and structural imbalance exist between land use patterns and ecological security requirements.&lt;/div&gt;&lt;div&gt;By employing a BRT (Boosted Regression Trees) model and SEM (Structural Equation Model), this study identified and categorized the influence of major TSU types on LES. Subsequently, hierarchical governance of LES thresholds was implemented through SLR (Segmented Linear Regression). Concurrently, we employ the SOM-K-means clustering method to execute zonal control of the predominant types of TSU. The results show that (1) from 2008 to 2023, the proportion of OE (Other ecological space) in the types of TSU is the highest at 32.764 ​%, which is concentrated in the Northern border and the Northwestern border; OE→ WE (Water ecological space) reflects the systematic tendency of transformation; and the spatial transfer of the three regions is mainly dominated by Agriculture→Urban and Ecology→Urban. (2) From 2008 to 2023, LES at different scales is characterized by ‘high in the North and low in the West,’ and SP (Social protection), EM (Economic drive), and SS (Ecological support) in each border region show strong effects on LES, with AP (Agricultural production space), GE (Grassland ecological space), OE, and FE (Forest ecological space) thresholds for LES of 0.457, 0.425, 0.330 and 0.345, respectively, 0.330, 0.348. (3) In 2023, the grid scale is mainly dominated by WE, FE, AP et al., and the distribution of its KCA (key conservation areas) is as high as 38.713 ​%; the county and city scales are mainly composed of FEL (Forest ecological space dominant type), APL(Agricultural production space dominant type), GEL (Grassland ecological space dominant type), and OEL (Other ecological space dominant type) to form the spatial pattern of t","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100282"},"PeriodicalIF":7.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145796577","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":"Technology to utilise and suppress weeds for sustainable maize production","authors":"Kaixian Wu ,&nbsp;Shiyong Zhou ,&nbsp;Guang Zeng ,&nbsp;Hongli Yang ,&nbsp;Bozhi Wu","doi":"10.1016/j.resenv.2025.100279","DOIUrl":"10.1016/j.resenv.2025.100279","url":null,"abstract":"<div><div>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)(<em>p</em> ​&gt; ​0.05) treatments, yet they significantly surpassed those of the chemical weeding combined with straw mulching (CWSM)(<em>p</em> ​&lt; ​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 (<em>p</em> ​&lt; ​0.05). Our series of supplementary experiments confirmed that weeds beyond a 25 cm radius do not induce yield loss (<em>p</em> ​&lt; ​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.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100279"},"PeriodicalIF":7.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145690901","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":"In-situ synthesizing CoONAl-C catalysts from spent LiCoO2 batteries and tobacco stems biomass: nearly 100 ​% peroxymonosulfate utilization","authors":"Teng Guo ,&nbsp;Xiaoya Gao ,&nbsp;Xingxin Yang ,&nbsp;Jiatian Wang ,&nbsp;Yucheng Yin ,&nbsp;Yaoran Hu ,&nbsp;Yue Luo ,&nbsp;Yongming Luo","doi":"10.1016/j.resenv.2025.100280","DOIUrl":"10.1016/j.resenv.2025.100280","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100280"},"PeriodicalIF":7.8,"publicationDate":"2025-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145525851","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":"High-efficiency and green recycling of manganese, nickel, cobalt, and zinc in a hydrogen peroxide–sulfuric acid system from electrolytic manganese dioxide sulfide slag","authors":"Panpan Mu (穆攀攀) ,&nbsp;Meichen Pan (潘美晨) ,&nbsp;Zixiu Li (李子秀) ,&nbsp;Guosai Jiang (蒋国赛) ,&nbsp;Zhe Tan (谭哲) ,&nbsp;Xiaoguang Zhang (张晓光) ,&nbsp;Gang Fang (方刚) ,&nbsp;De'an Pan (潘德安)","doi":"10.1016/j.resenv.2025.100278","DOIUrl":"10.1016/j.resenv.2025.100278","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100278"},"PeriodicalIF":7.8,"publicationDate":"2025-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145473950","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":"Optimizing the use of pyrolysis waste oil as a feedstock for the naphtha cracking process by hydrotreating and hydrocracking","authors":"Suk Hyun Lim ,&nbsp;Hai Hung Pham ,&nbsp;Eun Hee Kwon ,&nbsp;Nam Sun Nho","doi":"10.1016/j.resenv.2025.100277","DOIUrl":"10.1016/j.resenv.2025.100277","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100277"},"PeriodicalIF":7.8,"publicationDate":"2025-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145424433","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":"Gastrointestinal modification based on probiotic feed additive enviro-alleviators to reduce enteric methane production in ruminant and non-ruminant livestock","authors":"Benjamin Ndeshipanda Kashenye ,&nbsp;Jiachao Zhang","doi":"10.1016/j.resenv.2025.100276","DOIUrl":"10.1016/j.resenv.2025.100276","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100276"},"PeriodicalIF":7.8,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145361741","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":"Integrating deep learning with patch-based multilevel cellular automata for urban growth simulation: A case study of the Pearl River Delta urban agglomeration","authors":"Hongjiang Guo,&nbsp;Yanpeng Cai,&nbsp;Zixuan Qi,&nbsp;Bowen Li,&nbsp;Dianheng Jiang","doi":"10.1016/j.resenv.2025.100275","DOIUrl":"10.1016/j.resenv.2025.100275","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"22 ","pages":"Article 100275"},"PeriodicalIF":7.8,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145332390","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":"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}