Process Safety and Environmental Protection最新文献

{"title":"A critical review of ultrasonication as a green technology for enhanced biomass valorization in bioethanol and biogas production","authors":"Forough Momayez ,&nbsp;Oseweuba Valentine Okoro ,&nbsp;Armin Shavandi ,&nbsp;Carlos Martín ,&nbsp;Joeri F.M. Denayer ,&nbsp;Keikhosro Karimi","doi":"10.1016/j.psep.2025.107334","DOIUrl":"10.1016/j.psep.2025.107334","url":null,"abstract":"<div><div>This paper critically reviews and discusses the utilization of ultrasound as an eco-friendly approach for enhancing biomass valorization efficiency. In contrast to other methods, this process requires no additional chemicals, no post-treatment (such as wastewater treatment), and helps achieve industrial electrification goals. Ultrasound irradiation has been employed as a powerful tool in biomass pretreatment and biorefining, as well as a green extraction method for recovering bioactive molecules. By partially degrading lignin structures, ultrasound irradiation significantly improves the biological conversion of waste materials and lignocellulose, facilitating the exposure of valuable macromolecules, i.e., cellulose and hemicelluloses. This research begins with an introduction to sonication technology, and subsequently presents comprehensive discussions focusing on the application of ultrasound in the pretreatment of sludge and lignocellulosic materials for anaerobic digestion. Furthermore, various facets of ultrasound usage in bioethanol production, including substrate pretreatment, enzymatic and acid hydrolyzes, and fermentation techniques, are also examined. Additionally, the benefits of employing ultrasound technology to recover high-value, heat-sensitive bioactive compounds at temperatures below their degrading points, thereby preserving their functionality, are explored. Looking ahead, this review explores current trends in ultrasound technology adoption and its potential for scaling up and commercialization, introducing pathways for a more sustainable and efficient approach for biomass valorization.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"200 ","pages":"Article 107334"},"PeriodicalIF":6.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170558","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":"Functional group-driven modulation of combustion-gas kinetics in underground coal enhanced combustion","authors":"Hengyi He ,&nbsp;Baisheng Nie ,&nbsp;Peng Liu ,&nbsp;Jijiang Huang ,&nbsp;Hao Zhang ,&nbsp;Yanan Hou ,&nbsp;Kaidan Bai","doi":"10.1016/j.psep.2025.107359","DOIUrl":"10.1016/j.psep.2025.107359","url":null,"abstract":"<div><div>Enhanced combustion coupled with in-situ thermal energy extraction in underground coal seams represents a novel paradigm-shifting strategy for coal resource extraction through in-situ chemical fluidized mining. Systematic investigation into the combustion dynamics and reactive gas evolution under injection-enhanced conditions provides validation for optimizing this in-situ thermo-chemical conversion process. This study elucidates the metamorphic dependence of coal combustion through combined FTIR and TG-FTIR analyses, delineating functional group evolution and gaseous emission dynamics across coals of different metamorphic grades. The results indicate that the intensification of the coal metamorphism, characterized by increased multi-substituted aromatic groups (2 adjacent H deformation) and stable OH-π structures, alongside reduced active oxygen-containing groups (conjugated C<img>O and -COOH) and asymmetric aliphatic chains, collectively diminishes the coal ignitability. Combustion performance indices reveal that low-metamorphic-degree coal exhibits enhanced ignition and combustion efficiency at lower temperatures, whereas high-metamorphic-degree coals demonstrate inferior ignitability but achieve higher combustion rates. Highly metamorphosed coal typically exhibits lower CO₂ emission intensity and higher CO emission intensity due to incomplete oxidation. This divergence in combustion products directly correlates with enhanced oxygen demand requirements for complete oxidation at higher metamorphic stages. CH₄ emission predominantly occurs within the 200–700℃ thermal regime, with 400°C serving as a critical thermal demarcation point for the peak CH₄ release intensity from coals of varying metamorphic degrees. NO is the main component of the harmful gas NO_x, and highly metamorphosed coal releases less NO. Ignition propensity demonstrates linear dependence with -COOH, and the burnout efficiency exhibits proportional enhancement of the 3 adjacent H deformation. OH-OH, asym. R₂CH₂, and asym. RCH₃ collectively control the volumetric release of gaseous species during coal combustion. These findings offer a scientific basis for optimizing underground coal combustion systems by strategically utilizing natural variations in coal maturity.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"200 ","pages":"Article 107359"},"PeriodicalIF":6.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155151","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":"Water and sediments pollution from Iza river (Romania): Influence on water quality and metals content","authors":"Thomas Dippong ,&nbsp;Maria-Alexandra Resz","doi":"10.1016/j.psep.2025.107335","DOIUrl":"10.1016/j.psep.2025.107335","url":null,"abstract":"&lt;div&gt;&lt;div&gt;The present study introduces a monitoring initiative focused on the quality of surface water quality of the water samples collected from Iza and Tisa rivers, situated in the Sighetu Marmației locality in the Upper Tisa, a Natura 2000 protected area, in the North-West region of Romania. The study assessed the evolution of 15 chemical indicators (electric conductivity, pH, oxide-reduction potential, dissolved oxygen, total hardness, turbidity, fluoride, chloride, ammonium concentration (NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt;), nitrates (NO&lt;sub&gt;3&lt;/sub&gt;&lt;sup&gt;-&lt;/sup&gt;), nitrites (NO&lt;sub&gt;2&lt;/sub&gt;&lt;sup&gt;-&lt;/sup&gt;), sulphate (SO&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;2-&lt;/sup&gt;), Total Dissolved Solids, alkalinity (HCO&lt;sub&gt;3&lt;/sub&gt;&lt;sup&gt;-&lt;/sup&gt;, CO&lt;sub&gt;3&lt;/sub&gt;&lt;sup&gt;2-&lt;/sup&gt;)), and 20 metals (Ag, Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Na, Ni, Pb, Sb, Sr, Zn) in the water samples, and 12 metals in sediments collected from Isa river (As, Ba, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Sb, Zn), which were monthly measurement in the year of 2024. The objectives of this study were: (1) to assess the quality of Iza and Tisa rivers by measuring and analyzing the chemical load. (2) To identify the extent of the anthropogenic pressures and to elaborate measurements destined for mitigation of negative anthropogenic emission and environmental alterations. (3) To determine the typology of Iza river by applying the Total Ionic Salinity chart based on the major ions, Gibbs Piper and Ficklin-Caboi plots, indicating the precipitation, rock dominance, and silicate weathering, characterizing all studied surface waters. (4) To identify and evaluate the metal pollution in water and sediments, based on metal pollution index (MPI), and the human health risk at metals through variate risk indices (HQ and CDI). (5) To calculate the transfer of metals from Isa River to sediments, and to determine the ecological impact based on the enrichment factor and geoaccumulation index. Piper diagram indicated Ca-Na-HCO&lt;sub&gt;3&lt;/sub&gt;&lt;sup&gt;-&lt;/sup&gt; mixed typology, attributed to mineral solubilization or recharge water, and the Ficklin-Caboi chart indicated near-neutral high metal type of waters. According to the metal pollution indices scores, most surface waters (86 %) were characterized by medium pollution with the metals of interest. The mean scores varied between the critical range of 30–15, indicating medium pollution, MPI scores ranged between14.9–22.8 respectively. No human health risk at metals through ingestion for adults and children was determined, based on the hazard quotient scores which were lower than the critical value of one. Generally, the descendent trend associated to the transfer of metals from sediment to water was: Fe&gt;Mn&gt;As&gt;Cu&gt;Pb&gt;Co&gt;Cr&gt;Sb&gt;Ba&gt;Ni&gt;Cd&gt;Zn. Generally, samples had a depletion to minimal enrichment with heavy metals (ER &lt;2.0), especially with Cr, Fe, Ni, and Pb. All samples present significant enrichment (5.00 &lt;EF&lt;20) with Cd, while 70 % of samples present sig","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"200 ","pages":"Article 107335"},"PeriodicalIF":6.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155196","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":"Engineering of cubic facet ZIF-8 derivative carbon by supercritical-CO2 approach: An advanced standalone electrode modifier for the detection of toxic nitrofuran (furaltadone) in aquaculture water","authors":"Angelin Rubavathi Panneer Selvam ,&nbsp;Sabarison Pandiyarajan ,&nbsp;Ai-Ho Liao ,&nbsp;Gopinath Baskaran ,&nbsp;Manickam Selvaraj ,&nbsp;Mohammed A. Assiri ,&nbsp;Pawin Iamprasertkun ,&nbsp;Ho-Chiao Chuang","doi":"10.1016/j.psep.2025.107355","DOIUrl":"10.1016/j.psep.2025.107355","url":null,"abstract":"<div><div>The uncontrolled discharge of toxic contaminants, like furaltadone (FTD), a nitrofuran antibiotic utilized in animal farming, embodies a grave risk to both ecology and public health. Developing sustainable methods for detecting these harmful impurities has become a key area of research. To address these challenges, we developed a sustainable zeolitic imidazolate framework-8 derivative carbon (Z8-C) employing a supercritical-CO₂ (SC-CO₂) approach (S-Z8-C) and modified onto a screen-printed carbon electrode (SPCE) to create an ultra-responsive interface for FTD detection. To gain research insights into the SC-CO₂, Z8-C was prepared using a conventional method (C-Z8-C) for comparison. The prepared materials were examined using comprehensive physicochemical characterization. These results revealed that the surface of C-Z8-C exhibits a smooth hexagonal structure, whereas S-Z8-C features a cubic facet, respectively. The SC-CO₂ process significantly influenced the nucleation dynamics and induced morphological transformation. Furthermore, the S-Z8-C/SPCE was used to evaluate its electrocatalytic behavior through voltammetry analyses. The results show a broad linear range, a low LOD of 0.6507 µM, as well as excellent sensitivity, superior selectivity, and high repeatability. Additionally, the real-time operational feasibility of the S-Z8-C/SPCE was examined by spiking FTD into aqua culture water samples, and the recovery yield was determined to be 99.71 %. From the outcomes, the sustainability of the S-Z8-C/SPCE exhibits unique properties that authenticate its efficient electrochemical sensing performance for FTD, positioning it as a viable interface for real-time implementation.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"200 ","pages":"Article 107355"},"PeriodicalIF":6.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155090","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":"Efficient recovery of valuable metals from spent lithium-ion batteries bydeep eutectic solvents at mild temperature","authors":"Jiahui Niu ,&nbsp;Haifeng Wang ,&nbsp;Zhenxing Zhang ,&nbsp;Guangwen Zhang ,&nbsp;Jinlong Li ,&nbsp;Yaqun He ,&nbsp;Juan Hao","doi":"10.1016/j.psep.2025.107358","DOIUrl":"10.1016/j.psep.2025.107358","url":null,"abstract":"<div><div>The recycling of spent lithium-ion batteries (LIB) is of great significance due to their high content of strategic metals such as lithium, cobalt, and manganese, which possess considerable recycling value. In this study, a high-efficiency, eco-friendly deep eutectic solvent (DES), choline chloride-citric acid, was synthesized and applied to recycling valuable metals from the cathode materials of spent LIB. The experimental results showed that recycling of Co、Li can be achieved under optimal conditions: leaching time 60 min, leaching temperature 80 °C, choline chloride: citric acid molar ratio 2:1, the leaching efficiencies of 94.26 % for Co and 96.98 % for Li. Moreover, we deeply analyzed the leaching mechanism of DES by leaching kinetics, it was found that the leaching reactions of two valuable metals, Co and Li, are controlled by diffusion and mixed surface chemical reactions. The activation energies of the two valuable metals were determined to be 16.60 kJ·mol⁻¹ and 15.48 kJ·mol⁻¹, respectively. Mechanism analysis results confirm that Li was leached preferentially, and DES forms complexes with transition metals, reducing the metal valence state and promoting metal leaching.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"200 ","pages":"Article 107358"},"PeriodicalIF":6.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155092","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":"Phycoremediation of ten sulfonamide antibiotics in swine wastewater: Microalgal tolerance, toxicity, and carbohydrate-rich biomass production","authors":"William Michelon ,&nbsp;Vanessa Gressler ,&nbsp;Micheli Colla Vieira ,&nbsp;Mateus Gustavo Novello ,&nbsp;Renato Eising ,&nbsp;Estela de Oliveira Nunes ,&nbsp;Alexandre Matthiensen ,&nbsp;Aline Viancelli","doi":"10.1016/j.psep.2025.107338","DOIUrl":"10.1016/j.psep.2025.107338","url":null,"abstract":"<div><div>This study investigates the removal of ten sulfonamide antibiotic residues from swine wastewater using <em>Chlorella spp.</em> in a phycoremediation process. The effects of sulfonamides on microalgal biomass production, pigment content (chlorophyll <em>α</em>, chlorophyll <em>b</em>, and carotenoids), and the genotoxicity of treated water were evaluated. Sulfonamides were tested at concentrations of 0.1, 1.0, 10, 50, and/or 100 mg L⁻¹ , with the antibiotic removal specifically assessed at 10 mg L⁻¹ . Results showed that <em>Chlorella spp.</em> exhibited robust biomass growth and maintained stable pigment production, even at the highest concentrations, indicating the microalgae's tolerance to antibiotic exposure. The removal efficiency for sulfonamides was notably high, particularly for sulfamethoxazole (70 %), sulfachlorpyridazine (55 %), and sulfamerazine and sulfamethizole (50 %) at the 10 mg L⁻¹ concentration. Genotoxicity assays with <em>Allium cepa</em> revealed minimal chromosomal aberrations, suggesting that the treated wastewater posed a low genotoxic risk. The microalgal biomass, characterized by high carbohydrate content, also holds promise for biofuel production. These findings highlight <em>Chlorella spp.</em> as an effective and sustainable solution for mitigating antibiotic pollution in agricultural wastewater, while simultaneously providing valuable biomass for renewable energy applications.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"199 ","pages":"Article 107338"},"PeriodicalIF":6.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124632","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":"Impact of support mesh material on cake layer formation and fouling in an anoxic dynamic membrane bioreactor","authors":"Wen Zeng ,&nbsp;Marc Russenberger ,&nbsp;Yongzhou Lai ,&nbsp;Haixiang Li ,&nbsp;Lijie Zhou ,&nbsp;Wei-Qin Zhuang","doi":"10.1016/j.psep.2025.107354","DOIUrl":"10.1016/j.psep.2025.107354","url":null,"abstract":"<div><div>This study investigated the role of different support mesh materials (brass, stainless steel, and nylon) on cake layer formation and membrane fouling in Anoxic Dynamic Membrane Bioreactor (AnDMBR). Our results showed that stainless steel mesh exhibited the most stable operation, with minimal deformation and lower fouling rates, while brass and nylon meshes were more flexible and prone to folding. The malleability of brass mesh might result in more oscillations in mesh opening sizes, and its antimicrobial surface properties promoted rapid organic matter accumulation without efficient biodegradation, leading to a sharp rise in transmembrane pressure (TMP). The observation was supported by the fact that the brass-supported cake layer exhibited the highest surface roughness compared with other cake layer samples. The brass-supported cake layer also showed the highest surface roughness, which enhanced lateral microbial attachment and improved the structural stability and filtration performance of dynamic membrane. Proteobacteria and Bacteroidetes were the dominant phyla across all cake layers, with genus <em>Thiobacillus</em> playing a key role among other predominant genera. Overall, our results highlight the critical role of support mesh material in optimizing cake layer formation and stability in AnDMBRs, with stainless steel emerging as the most optimal material for operation.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"199 ","pages":"Article 107354"},"PeriodicalIF":6.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124631","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":"Prediction of dioxins emissions from modern WtE plants with machine learning: in view of capacities, operation, and age of incinerators","authors":"Yingzhao Liu ,&nbsp;Ming Zhang ,&nbsp;Sijie Wen ,&nbsp;Jiaqi Li ,&nbsp;Yang Chen ,&nbsp;Junxiao Wei ,&nbsp;Huan Li ,&nbsp;Jianguo Liu ,&nbsp;Jianjun Cai","doi":"10.1016/j.psep.2025.107353","DOIUrl":"10.1016/j.psep.2025.107353","url":null,"abstract":"<div><div>As urbanization accelerates and consumption patterns shift, the global municipal solid waste (MSW) quantity continues to soar. In this context, incineration, a primary environmentally sound treatment method, has long been under the spotlight due to its associated dioxins emissions. Traditional methods for detecting dioxins are costly and cannot cover the entire operating time of the MSW incinerators, hence the growing interest in using machine learning to predict dioxins emissions. This study aims to predict dioxins emissions from waste-to-energy (WtE) plants using machine learning algorithms. In this study, we initially divided global data into three groups: China, Europe and the United States, and Japan. Then, we constructed prediction models based on deep forest regression and XGBoost regression, considering the age, capacity, and daily operation time of incinerators as influencing factors to forecast dioxins concentrations. The results indicate that age, capacity, and daily operation time are significantly correlated with dioxins emission concentrations (<em>p</em> &lt; 0.01). Notably, the Japan-model performed the best, suggesting that age and daily operation time of incinerators significantly impact dioxins emissions. Furthermore, the study discovered that measures such as MSW classification, upgrades of air pollution control devices, optimized operating time, and constructing larger-scale WtE facilities can reduce dioxins concentrations. Moreover, we found that implementing any single one of these measures could lower dioxins concentrations by 20–50 %. This study offers a novel perspective for understanding and predicting dioxins emissions from WtE plants and provides a scientific foundation for the development and implementation of dioxins emission reduction policies.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"200 ","pages":"Article 107353"},"PeriodicalIF":6.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155168","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":"Study on utilizing Chinese Baijiu wastewater as an alternative carbon source in full-scale municipal sewage treatment plants","authors":"Jizhen Li ,&nbsp;Zuokai You ,&nbsp;Junjie Gu ,&nbsp;Zibo Xiao ,&nbsp;Wenping Dong ,&nbsp;Zhixiang Yang ,&nbsp;Hao Jiang ,&nbsp;Yinghao Liu ,&nbsp;Zhenghe Xu ,&nbsp;Weiqiang Zhu","doi":"10.1016/j.psep.2025.107203","DOIUrl":"10.1016/j.psep.2025.107203","url":null,"abstract":"<div><div>Yellow water, a byproduct of solid-state fermented Chinese Baijiu production, contains high levels of chemical oxygen demand (COD), posing challenges for wastewater treatment but also offering potential as an external carbon source. This study investigates the viability of using yellow water as a carbon source in full-scale wastewater treatment plants (WWTPs). Compared to a commonly used compound carbon source, yellow water maintained high efficiencies in total nitrogen (TN) (82.94 ± 3.41 % vs. 83.50 ± 2.99 %) and COD removal (96.53 ± 1.00 % vs. 96.65 ± 0.77 %). Additionally, comparable specific denitrification (0.1264 ± 0.0082 g NO₃^--N g⁻¹ TSS d⁻¹ vs. 0.1157 ± 0.0126 g NO₃^--N g⁻¹ TSS d⁻¹) and specific nitrification rates (0.1164 ± 0.0121 g NH₄⁺-N g⁻¹ TSS d⁻¹ vs. 0.1092 ± 0.0063 g NH₄⁺-N g⁻¹ TSS d⁻¹) were observed. The addition of yellow water did not significantly affect the relative abundance of the microbial community. Furthermore, using yellow water could reduce costs by $13.27 per ton of Baijiu produced annually and avoid approximately 0.10 tons of CO₂ equivalent emissions per ton of Baijiu produced. This approach demonstrates significant potential for reducing the carbon footprint and costs associated with wastewater treatment in the Chinese Baijiu industry while promoting the recovery and reuse of wastewater resources, advancing sustainable wastewater treatment, and fostering a circular bioeconomy.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"199 ","pages":"Article 107203"},"PeriodicalIF":6.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107309","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":"Thermo-economic analysis and optimization of a novel self-condensing transcritical CO2 power cycle with ejector refrigeration","authors":"Jiaxi Xia ,&nbsp;Jingjing Hou ,&nbsp;Jiangfeng Wang ,&nbsp;Juwei Lou ,&nbsp;Yumin Guo","doi":"10.1016/j.psep.2025.107326","DOIUrl":"10.1016/j.psep.2025.107326","url":null,"abstract":"<div><div>The transcritical CO₂ power cycle stands out as a promising approach for the utilization of waste heat and renewable energy, but its practical application is restricted by the condensation challenges of working fluid. To tackle this issue, a novel self-condensing transcritical CO₂ power cycle (SC-TCO₂PC), which integrates the transcritical CO₂ power cycle with an ejector refrigeration cycle, is proposed. Detailed mathematical models are formulated, and parametric study is carried out to illustrate the correlations between the crucial parameters and system performance from both thermodynamic and economic viewpoints. Then a multi-objective optimization is applied to explore the potential for performance enhancement. Furthermore, the comparative analysis of the SC-TCO₂PC and the recuperative supercritical CO₂ Brayton cycle (SCO₂BC) are conducted under optimized conditions. The results demonstrated that the enhanced turbine inlet pressure and temperature positively influence the thermal-economic performance of the SC-TCO₂PC. Furthermore, the maximum thermal efficiency of 43.90 %, exergy efficiency of 72.97 % and minimum cost per unit of electricity of 0.0372$/kWh are attainable for the SC-TCO₂PC, reflecting the improvements of 4.88 %pt for maximum thermal efficiency, 6.60 %pt for maximum exergy efficiency and a 8.87 % reduction for minimum unit power cost in comparison to the recuperative SCO₂BC. In optimum conditions, the SC-TCO₂PC is capable of achieving a thermal efficiency of 42.11 % and an exergy efficiency of 70.54 % with the cost per unit of electricity of 0.0440$/kWh.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"199 ","pages":"Article 107326"},"PeriodicalIF":6.9,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124635","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}