Journal of Environmental Sciences-china最新文献

{"title":"Selective ozone oxidation of ammonium ion catalyzed by carbon nanocage-supported Co3O4: Role of oxygen vacancies and electron transfer sites","authors":"Yu Gao ,&nbsp;Xiemin Liu ,&nbsp;Weida Chen ,&nbsp;Jin Jin ,&nbsp;Xizhang Wang ,&nbsp;Feng Zhang ,&nbsp;Xiankun Wu","doi":"10.1016/j.jes.2025.01.003","DOIUrl":"10.1016/j.jes.2025.01.003","url":null,"abstract":"<div><div>For the effective treatment of the wastewater with low-medium concentration ammonia nitrogen and low strength COD, a high-performance Co₃O₄ catalyst supported on carbon nanocages (CNCs) was prepared. By isovolumetric im pregnation, Co₃O₄ could be uniformly dispersed on surface of CNCs, which possess tiny particle size and strong electron transfer capability. The catalytic performance of the prepared Co₃O₄/CNCs catalysts with different Co₃O₄ loadings was systematically evaluated and compared with Co₃O₄/CNTs. It is found that 20 wt.% Co₃O₄/CNCs shows the best catalytic performance, achieving an ammonia nitrogen conversion rate of 71.0 % and a nitrogen selectivity of 81.8 %. Compared to commonly used Co₃O₄, ammonia conversion and nitrogen selectivity of Co₃O₄/CNCs increased by 28.9 % and 15.8 % respectively. In the five consecutive cycles, the catalytic activity remained stable. The mechanism that CNCs support effectively increases the surface oxygen vacancies of Co₃O₄ through XPS analysis was also elucidated, and DFT calculations confirm strong electron transfer between CNCs and Co₃O₄, rendering Co₃O₄ nanoparticles as the primary catalytic active sites. The results may contribute to the development of high-performance catalytic ozone oxidation catalysts for ammonia nitrogen.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"155 ","pages":"Pages 151-162"},"PeriodicalIF":5.9,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Organic matter removal and CH4 production performance recoveries and microbial community changes in upflow anaerobic biofilter after long term starvation","authors":"Jianmin Li ,&nbsp;Runyu Liu ,&nbsp;Xiuhong Liu ,&nbsp;Qing Yang ,&nbsp;Shiyong Zhang","doi":"10.1016/j.jes.2025.01.002","DOIUrl":"10.1016/j.jes.2025.01.002","url":null,"abstract":"<div><div>The organic matter in municipal wastewater can be recovered by anaerobic biological treatment, making further resource utilization of municipal wastewater, which meets the requirements of sustainable development. An upflow anaerobic biofilter (UAF) treating municipal wastewater was established. The performances of stable operation and recovery operation of UAF after long-term starvation (234 days) and the changes of microbial community structure were researched. By gradually reducing HRT from 10 h to 4 h, the UAF achieved the treatment performance of pre-starvation after only 50 days recovery operation, in which total COD and soluble COD removal efficiencies reached 66 % and 69 %, respectively, and the CH₄ production rate was 0.21 L CH₄/g COD_removal. The recovery performance of UAF after long term starvation showed that the recovery sequence of three main anaerobic processes was hydrolytic acidification, hydrogen-acetate production and methanogenesis. High-throughput sequencing results indicated that dominant bacteria associated with hydrolytic acidification process changed from Moduliflexaceae and <em>Trichococcus</em> in stable operation stage to <em>Trichococcus</em> and <em>Romboutsia</em> in recovery stage. Besides, the dominant archaea changed from <em>Methanosaeta</em> (hydrotrophic methanogens) to <em>Methanobacterium</em> (acetotrophic methanogens), showing <em>Methanobacterium</em> was more resistant to starvation environment. Therefore, by using UAF for biological treatment of organic matter, even after a long period of starvation, the system would not be completely destroyed. Once it resumed operation, the treatment performance could be restored in a short period of time.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 735-746"},"PeriodicalIF":5.9,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heat shock protein 70 mitigates black carbon particles-induced cardiac damage","authors":"Bo Zuo ,&nbsp;Fang Wang ,&nbsp;Zhengpeng Li ,&nbsp;Binhe Yu ,&nbsp;Jiayi Zhang ,&nbsp;Weizhe Xu ,&nbsp;Sizhi Ai ,&nbsp;Hongqian Chu","doi":"10.1016/j.jes.2025.01.001","DOIUrl":"10.1016/j.jes.2025.01.001","url":null,"abstract":"<div><div>Studies have demonstrated the association between black carbon (BC) particles and elevated risk of cardiovascular disease. However, the mechanisms underlying this relationship remain unclear. This study aims to investigate the effects of BC exposure on gene expressions in mice myocardium. Mice were divided into 3 groups (phosphate buffer saline (PBS) group, C50 group (50 µg BC) and C100 group (100 µg BC)). RNA sequencing was employed to conduct transcriptome analysis on myocardium samples. The expression levels of candidate genes were verified by qRT-PCR. Western Blot and Immunohistochemistry techniques were utilized to evaluate the expression of heat shock protein 70 (Hsp70). BC exposure can cause an increase in the level of cardiac <em>I-1β</em> and <em>IL-6</em>. Transcriptome analysis revealed 1027 differentially expressed genes (DEGs) in the C100 group compared with the PBS group. Gene Ontology (GO) enrichment analysis demonstrated that these DEGs were primarily enriched in misfolded protein binding, respiratory chain and ATP metabolic process. Additionally, Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis indicated significant enrichment of DEGs in pathways mainly related to prion disease, oxidative phosphorylation and reactive oxygen species. HSPA1A and HSPA1B, as Hsp70 family genes, were enriched in GO term of misfolded protein binding and prion disease pathway. Moreover, the expression of cardiac Hsp70 was significantly decreased in both BC groups and showed a negative association with pro-inflammatory factors expression. BC exposure has been shown to cause inflammatory injury and may induce protein misfolding. Notably, Hsp70 was a potential cardioprotective factor and target for BC pollution-related effects.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 871-881"},"PeriodicalIF":5.9,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fe/N modified porous carbon nanofibers with encapsulated FeCo nanoparticles for efficient electrocatalytic nitrate reduction to ammonia","authors":"Jiayu Chen ,&nbsp;Anni Wu ,&nbsp;Jixiang Li ,&nbsp;Chengyi Hong ,&nbsp;Wenxiang Tang ,&nbsp;Hu Zheng ,&nbsp;Wei Teng","doi":"10.1016/j.jes.2024.12.037","DOIUrl":"10.1016/j.jes.2024.12.037","url":null,"abstract":"<div><div>The efficient electrocatalytic nitrate (NO₃⁻) reduction to ammonia (NRA) offers a sustainable alternative for both environmental remediation and ammonia synthesis. Developing advanced electrocatalysts with rationally designed spatial arrangement of active sites and optimizing the synergetic effect among components are crucial for high efficiency and selectivity. Herein, we present Fe/N active sites decorated on porous carbon nanofibers (CNFs) with encapsulated FeCo nanoparticles (FeCo@CNFs-Fe/N) as electrocatalysts for NRA. The FeCo@CNFs-Fe/N catalyst demonstrates exceptional performance, achieving a high ammonia yield of 498.18 μmol/(h·g_cat). Meanwhile, the enhanced reduction activity, especially the reduction in overpotential by 0.565 V, is 3–10 times higher than that of FeCo-encapsulated and Fe/N-modified CNFs-based catalysts. The enhanced catalytic activity is attributed to the efficient structure design and optimized spatial distribution of active sites, which enhance the electron transfer rate and decrease the reaction energy barrier. Mechanistic studies reveal that the synergetic effect between encapsulated nanoparticles and surface-modified Fe/N sites plays a crucial role in promoting efficient nitrate adsorption and selective ammonia production. These findings highlight the potential of strategically engineered CNF-based composites for nitrate reduction and other advanced electrocatalytic applications.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"157 ","pages":"Pages 90-99"},"PeriodicalIF":5.9,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving groundwater vulnerability assessment using machine learning","authors":"Juanjuan Fu,&nbsp;X. Chris Le","doi":"10.1016/j.jes.2024.12.024","DOIUrl":"10.1016/j.jes.2024.12.024","url":null,"abstract":"","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"153 ","pages":"Pages 6-9"},"PeriodicalIF":5.9,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143039490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of PFAS serum exposure pattern on the lipid metabolism: Time to step-forward in causal inference in epidemiology","authors":"Ming Yang ,&nbsp;Ang Li ,&nbsp;Yayuan Mei ,&nbsp;Haoran Li ,&nbsp;Ziwen An ,&nbsp;Quan Zhou ,&nbsp;Jiaxin Zhao ,&nbsp;Yanbing Li ,&nbsp;Kai Li ,&nbsp;Meiduo Zhao ,&nbsp;Jing Xu ,&nbsp;Huicai Guo ,&nbsp;Qun Xu","doi":"10.1016/j.jes.2024.12.029","DOIUrl":"10.1016/j.jes.2024.12.029","url":null,"abstract":"<div><div>Associations of per- and polyfluoroalkyl substances (PFAS) on lipid metabolism have been documented but research remains scarce regarding effect of PFAS on lipid variability. To deeply understand their relationship, a step-forward in causal inference is expected. To address these, we conducted a longitudinal study with three repeated measurements involving 201 participants in Beijing, among which 100 eligible participants were included for the present study. Twenty-three PFAS and four lipid indicators were assessed at each visit. We used linear mixed models and quantile g-computation models to investigate associations between PFAS and blood lipid levels. A latent class growth model described PFAS serum exposure patterns, and a generalized linear model demonstrated associations between these patterns and lipid variability. Our study found that PFDA was associated with increased TC (β = 0.083, 95% CI: 0.011, 0.155) and HDL-C (β = 0.106, 95% CI: 0.034, 0.178). The PFAS mixture also showed a positive relationship with TC (β = 0.06, 95% CI: 0.02, 0.10), with PFDA contributing most positively. Compared to the low trajectory group, the middle trajectory group for PFDA was associated with VIM of TC (β = 0.756, 95% CI: 0.153, 1.359). Furthermore, PFDA showed biological gradients with lipid metabolism. This is the first repeated-measures study to identify the impact of PFAS serum exposure pattern on the lipid metabolism and the first to estimate the association between PFAS and blood lipid levels in middle-aged and elderly Chinese and reinforce the evidence of their causal relationship through epidemiological studies.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"155 ","pages":"Pages 163-176"},"PeriodicalIF":5.9,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental studies of priority persistent contaminants: A special issue dedicated to Professor Chuanyong Jing","authors":"Emma Jing ,&nbsp;Li Yan ,&nbsp;Guibin Jiang ,&nbsp;X. Chris Le","doi":"10.1016/j.jes.2024.12.026","DOIUrl":"10.1016/j.jes.2024.12.026","url":null,"abstract":"","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"153 ","pages":"Pages 1-5"},"PeriodicalIF":5.9,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143039488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A green process for total nitrogen removal without extra energy consumption: Synergistic actions for wastewater treatment","authors":"Rongting Xiang,&nbsp;Hongguang Guo,&nbsp;Benhong Liu,&nbsp;Lei Liu,&nbsp;Yi Zhang,&nbsp;Jue Wang,&nbsp;Lixia You","doi":"10.1016/j.jes.2024.12.032","DOIUrl":"10.1016/j.jes.2024.12.032","url":null,"abstract":"<div><div>Total nitrogen (TN) removal is one of the key issues in improving water quality, while the traditional nitrification-denitrification process with its high energy consumption is unsustainable, due to greenhouse gas (GHG) emission. A method using organic-inorganic pellets and selected microalgae that can operate without electricity consumption was designed for TN removal in actual wastewater treatment. The results showed that the TN removal efficiencies with different pellets were 88.2 % ± 2.2 %, 86.6 % ± 3.0 %, 85.4 % ± 4.3 %, and 82.3 % ± 6.5 %, respectively. Microalgae assimilated inorganic nitrogen within cells, resulting in a significant positive relationship with TN (<em>P</em> &lt; 0.05), and effectively removed TN through sedimentation. The pellets adsorbed nitrogen and microorganisms, released organic substances to regulate the ratio of water chemical oxygen demand (COD) to TN, and correspondingly influenced microbial growth. Microalgae and bacteria such as <em>Romboutsia, Proteiniclasticum</em>, and <em>Rhodopseudomonas</em> cooperated to form a mixed aerobic (water) -anaerobic (pellets) environment in the devices, and acted synergistically to remove TN. This study verifies the feasibility of TN removal with only solar energy in a low flow application in large spaces, benefiting carbon neutrality in wastewater treatment.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 747-756"},"PeriodicalIF":5.9,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Driving role of acid mine drainage on microbial community assembly and species coexistence in paddy soil profiles","authors":"Shengni Tian ,&nbsp;Yufei Dong ,&nbsp;Shouyang Pang ,&nbsp;Guokai Yuan ,&nbsp;Sisi Cai ,&nbsp;Penghui Zhang ,&nbsp;Yupeng Chen ,&nbsp;Mingzhu Zhang","doi":"10.1016/j.jes.2024.12.034","DOIUrl":"10.1016/j.jes.2024.12.034","url":null,"abstract":"<div><div>The environmental impacts of acid mine drainage (AMD) from open-pit mining are profoundly detrimental, yet knowledge about its effects on paddy soil microbial communities, especially at greater depths, remains limited. In this investigation, we compared soils affected by AMD versus unaffected soil depth profiles in terms of bacterial diversity and community assembly. The profiles in AMD-polluted soils exhibited tight geochemical gradients, characterized by increased acidity, SO₄^2-, NO₃^-, and heavy metal content compared to unpolluted soils. Notably, AMD significantly diminished soil bacterial biodiversity. A depth-wise analysis showed distinct microbial stratification, with certain bacteria like <em>Candidatus_Solibacter</em> and <em>Candidatus_Koribacter</em> predominated in polluted soils, while others like <em>Haliangium</em> and <em>Nitrospira</em> were more prevalent in control soils. Interestingly, despite variable soil conditions, predicted metabolic pathways, particularly those involving carbon, nitrogen, and sulfur, showed relative stability. AMD pollution induced the upregulation of methyl-coenzyme M reductase and sulfate reductase genes. Bacterial communities were more responsive to pH and nutrient content rather than heavy metals, with pH and SO₄^2- being the primary drivers of microbial diversity and distribution. Additionally, pH was identified as the most significant influence on the predicted methane, sulfur, and nitrogen metabolism. Furthermore, deterministic processes played a more significant role in community assembly of polluted soils, while heterogeneous selection gained importance with increasing depth in control soils. Additionally, microbial co-occurrences, particularly positive interactions, were more prevalent in the polluted soils with reduced network modularity and keystone taxa. These findings offer insights into sustaining microbial diversity in extreme environments.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 771-783"},"PeriodicalIF":5.9,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Halogenated organic pollutants in aquatic invertebrate – Fish food webs: Global distributions and trophic magnification","authors":"Yao Li ,&nbsp;Wu Wen ,&nbsp;Jie Zhang ,&nbsp;Qing Zhang ,&nbsp;Yang Li ,&nbsp;Shangwei Zhang ,&nbsp;Xinghui Xia","doi":"10.1016/j.jes.2024.12.031","DOIUrl":"10.1016/j.jes.2024.12.031","url":null,"abstract":"<div><div>Persistent halogenated organic pollutants (HOPs) are globally concerned owing to their persistence, bioaccumulation, and potential toxicity to aquatic organisms. The trophic transfer of HOPs can affect their toxic effects on both humans and ecosystems. Previous studies mostly focused on HOPs biomagnification within specific regional or ecosystem contexts, however, the variation in trophic magnification factors (TMFs) among different HOPs across a spectrum of diverse aquatic systems globally remains unclear. By collating literatures encompassing TMFs of polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), or perfluoroalkyl acids (PFAAs) along invertebrate–fish food webs on a global scale, our analysis revealed that Asia, North America, and Europe exhibited the highest pollution levels of HOPs. PCBs were found to have the highest trophic magnification capability (TMF = 3.14), followed by PBDEs (TMF = 2.48) and PFAAs (TMF = 1.97). TMF values and the probability of TMF exceeding 1 for PCB, PBDE and PFAA congeners showed a parabolic relationship with halogenation degree and carbon chain length. Specifically, PCBs with 6 chlorines, PBDEs with 5 bromines, and PFAAs with 12 carbons exhibited maximum trophic transfer capability and potential along food webs. Fractionation of PCBs and PFAAs was observed, with the proportions of higher chlorination degree and longer chain PFAAs increasing while the others decreased with trophic levels. Surprisingly, we also found a positive relationship between site latitude and TMF values of HOP congeners. This study provides a valuable basis for gauging ecological and health risks of HOPs, facilitating the development of robust standards for aquatic environment management.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"157 ","pages":"Pages 123-133"},"PeriodicalIF":5.9,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}