Journal of Environmental Chemical Engineering最新文献

{"title":"Impacts of dibutyl phthalate on the microbial community assembly process in black soil of Northeast China","authors":"Zhenghao Sun ,&nbsp;Tianye Wang ,&nbsp;Guankai Qiu ,&nbsp;Ningning Song ,&nbsp;Xiutao Yang ,&nbsp;Guopeng Zhu ,&nbsp;Boling Deng ,&nbsp;Quanying Wang ,&nbsp;Hongwen Yu","doi":"10.1016/j.jece.2025.117238","DOIUrl":"10.1016/j.jece.2025.117238","url":null,"abstract":"<div><div>Dibutyl phthalate (DBP) accumulation threatens soil microbial communities, yet its effects on microbial assembly mechanisms remain unclear. This study investigated the impacts of DBP with a wide range of level (i.e., 0–40 mg kg⁻¹, DBP0, DBP10, DBP20, and DBP40) on microbial community assembly processes in black soil of Northeast China through 90-day controlled laboratory incubations. A framework of infer community assembly mechanisms by phylogenetic bin-based null model analysis (iCAMP) was used to qualify the soil community assembly processes. The findings demonstrated significant reductions in soil enzyme activities (urease, β-glucosidase) and respiration intensity with elevated DBP concentrations. Microbial α-diversity declined significantly, with Shannon and Chao1 indices decreased by 1.79 % and 4.78 % for DBP10, 5.29 % and 9.70 % for DBP20, 14.66 % and 10.22 % for DBP40, respectively. The abundance of bacteria linked to soil carbon and nitrogen cycling exhibited reduction, such as Nocardioides (decreased from 1.24 % to 0.52 %) and Gp6 (decreased from 5.65 % to 3.67 %). Conversely, the relative abundances of bacteria which are associated with DBP degradation increased, such as Streptomyces (Increased from 20.21 % to 34.01 %) and Bacillus (Increased from 2.49 % to 5.21 %). DBP significantly altered microbial community assembly processes. As DBP concentration increased, the relative importance of homogeneous selection rose from 45.41 % to 55.63 %, while dispersal limitation declined from 48.89 % to 35.09 %. DBP homogenizes environmental conditions and a transition from neutral diffusion dynamics to pressure-driven selection, favoring taxa adapted to DBP degradation. This study advances understanding of DBP’s ecological impacts on soil microbial communities and their assembly dynamics.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 4","pages":"Article 117238"},"PeriodicalIF":7.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced photo-electrochemical properties of phosphorus-doped ZnSxO1-x with surface PS· defect species for hydrogenation with in situ generated H+","authors":"Yung-Chieh Chuang ,&nbsp;Hairus Abdullah ,&nbsp;Ardila Hayu Tiwikrama ,&nbsp;Mohamed Tarek Ahmed","doi":"10.1016/j.jece.2025.117233","DOIUrl":"10.1016/j.jece.2025.117233","url":null,"abstract":"<div><div>Photocatalytic hydrogenation was successfully conducted in the present work with P-doped ZnS_xO_1-x catalyst to convert 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) with in situ generated H⁺. In previous work, pure ZnS_xO_1-x photocatalyst exhibited its ability to evolve hydrogen. However, it cannot convert 4-NP to 4-AP completely since the generated H⁺ is easily reduced to H₂ and released from catalyst surfaces. In this work, phosphorus was doped to ZnS_xO_1-x to purposely create defects to trap the generated electrons on catalyst surfaces, thus decreasing the reduction of adsorbed H⁺ to H₂. XPS analysis indicates the emergence of positively charged <span><math><msubsup><mrow><mi>V</mi></mrow><mrow><mi>O</mi></mrow><mrow><mi>··</mi></mrow></msubsup></math></span> and <span><math><msubsup><mrow><mi>P</mi></mrow><mrow><mi>S</mi></mrow><mrow><mi>·</mi></mrow></msubsup></math></span> surface defects after doping P to ZnS_xO_1-x. When the photogenerated electron is trapped in the positively charged defects, the H⁺ reduction is diminished. The available H⁺ on catalyst surfaces can be used for a hydrogenation reaction of 4-NP to 4-AP during the photoreaction. To optimize the catalytic system, different amounts of P precursor were doped into ZnS_xO_1-x with a hydrothermal method at 150 °C. The as-synthesized catalysts were characterized with XRD, SEM, TEM, XPS, DRS, PL, EIS, TPC, and CV analysis. It was found that a typical catalyst (ZP-0.2–10 h) can effectively hydrogenate 30 ppm 4-NP to 4-AP in 60 min under a 150-W Xe-lamp illumination. Based on the analysis data, P doping enhances the light absorbance, photocurrent, conductivity, and photocarrier lifetime of ZnS_xO_1-x. The present work indicates a green hydrogenation reaction can be done by modifying a hydrogen-evolved photocatalyst. Finally, a rational hydrogenation conversion mechanism was discussed and proposed in this work.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 4","pages":"Article 117233"},"PeriodicalIF":7.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144147597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unlocking sustainability: Integrating omics for advanced wastewater treatment","authors":"Manish Kumar ,&nbsp;Shiwangi Dogra ,&nbsp;Nilotpal Das ,&nbsp;Siddhant Dash ,&nbsp;Ashutosh Sharma ,&nbsp;Aurea Karina Ramírez Jiménez ,&nbsp;Alfredo Díaz Lara ,&nbsp;Shane A. Snyder ,&nbsp;Futoshi Kurisu","doi":"10.1016/j.jece.2025.117154","DOIUrl":"10.1016/j.jece.2025.117154","url":null,"abstract":"<div><div>Owing to the urgent and escalating environmental crisis of water pollution through anthropogenic wastewater generated from various sources, the development of novel and innovative bioremediation strategies that are equally sustainable is highly necessitated. The present study embarks on an integrated omics-based exploration, complemented by a thorough literature synthesis, to critically evaluate and enhance hybrid algal-bacterial systems for effective wastewater treatment. Drawing on case studies and research from diverse geographic regions, we explore how these technologies inform the design and optimization of both engineered and natural treatment systems. The review emphasizes the integration of multi-omics data to support sustainable, targeted bioremediation strategies and underscores the cross-disciplinary convergence of environmental engineering, molecular biology, and systems ecology. This global and holistic perspective positions omics as a cornerstone for advancing the next generation of wastewater treatment solutions. Comprehensive analyses of the efficacies of different treatment methods used to remediate organic pollutants, heavy metals, nutrients, and contaminants of emerging concern (CECs), including antibiotic resistance genes (ARGs), were carried out, thus underscoring the pivotal role of microbial diversity and metabolic activity in the complex process of contaminant elimination. While prior research has predominantly focused on isolated components, the current study presents a holistic approach, merging state-of-the-art high-throughput metagenomics and transcriptomics techniques. This innovative combination illuminates the functional dynamics of microbial communities operating within the hybrid system under a range of operational conditions. The primary critical findings reveal significant shifts in microbial community structure and gene expression patterns, which are intricately linked to enhanced efficiencies in nutrient uptake and contaminant removal. In addition, the study also situates these findings within the expansive framework of omics-based bioremediation research, providing a clear and structured pathway for identifying prevailing knowledge gaps and directing future optimization efforts. Collectively, these contributions not only deepen our understanding of microbial community functions but also pave the way for designing next-generation bio-based wastewater treatment systems driven by the intricate interplay of microbial dynamics.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 4","pages":"Article 117154"},"PeriodicalIF":7.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deep CO2 photoreduction by synergy of K+ doping and defective modulation over TiO2@K2Ti6O13 nanoribbon heterojunctions","authors":"Leiping Wang ,&nbsp;Shuai Liu ,&nbsp;Zun Man ,&nbsp;Xiaorong Dai ,&nbsp;Guangsuo Yu ,&nbsp;Honglei Zhang ,&nbsp;Hang Xiao ,&nbsp;Yang Meng","doi":"10.1016/j.jece.2025.117221","DOIUrl":"10.1016/j.jece.2025.117221","url":null,"abstract":"<div><div>The contemporary issues of energy shortages and global warming, attributable to the substantial utilization of fossil fuels, require immediate consideration and remedial action. Photocatalytic CO₂ reduction (CO₂RR) technology is a promising approach to mitigate climate change and address current energy shortages. However, slow charge dynamics and low affinity for intermediates on photocatalysts remain significant challenges in photocatalytic CO₂ reduction. In this study, we have synthesized a series of TiO₂@K₂Ti₆O₁₃ (KTO) heterojunctions for gas-solid phase photocatalytic CO₂ reduction by incorporating K-doped defective TiO₂ during the construction of KTO nanoribbons using a simple hydrothermal method. The presence of oxygen vacancies and the formation of type II heterojunctions provided a driving force for the transfer of photoexcited carriers, which modulated the electronic properties of the catalyst surface through the built-in electric field. Density functional theory (DFT) calculations and experimental results show that in Ov-K/TiO₂, K⁺ doping and oxygen vacancies (O_v) synergistically modulate the charge density of Ti active sites, thereby promoting the adsorption and activation of CO* intermediates. This enhancement resulted in O_v-K/TiO₂@KTO-2 exhibiting improved CO₂ conversion capacity and enhanced CH₄ selectivity. This work provides a simple method to synthesize efficient TiO₂-based photocatalysts for selective CH₄ production and also offers a general platform for designing high-performance synergistic catalysts for efficient solar energy conversion.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 4","pages":"Article 117221"},"PeriodicalIF":7.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intensification of ozone mass transfer and hydroxyl radical generation in HC-UC/RF coupled system: Promotion and application","authors":"Tianjie Zeng ,&nbsp;Tengjiang Yang ,&nbsp;Xiao Yun ,&nbsp;Xinyue Luo ,&nbsp;Yunxian Liu ,&nbsp;Hongyang Ren ,&nbsp;Bing Wang","doi":"10.1016/j.jece.2025.117215","DOIUrl":"10.1016/j.jece.2025.117215","url":null,"abstract":"<div><div>Advanced oxidation processes (AOPs) are widely used in water treatment, yet traditional ozone (O₃)-based processes are limited by O₃'s low water solubility and mass transfer efficiency. This study established a coupled system that integrates hydrodynamic cavitation (HC), ultrasonic cavitation (UC), and rotational flow field (RF) to enhance ozonation. Considering O₃ decomposition, this study investigated the effects of various operating factors on the mass transfer coefficients and generation of hydroxyl radicals (^•OH). The results showed that the HC-UC/RF system overcame the limitations of the individual technologies. HC enhanced turbulence and generated microbubbles, improving the contact efficiency between O₃ and the liquid phase. Meanwhile, the synergistic effect of rotational flow and UC optimized the distribution of cavitation bubbles within the reactor, thereby enhancing the cavitation effect. This coupled system significantly increased the generation of ^•OH and mass transfer efficiency of O₃. Under the optimal conditions of 43.92 mg/L O₃ concentration, 100 L/h O₃ gas flow rate, 20 kHz ultrasonic frequency, and 600 W ultrasonic power, the yield of ^•OH was 0.2717 μmol/(L min), the decomposition rate constant of O₃ was 0.5457 min⁻¹, and the volumetric mass transfer coefficient was 0.1166 min⁻¹. The degradation of tetracycline and norfloxacin was compared across different systems, further verifying the enhanced oxidizing capacity of the coupled system. Specifically, the HC-UC/RF system achieved rapid antibiotic degradation, with a 57 % TOC removal efficiency after 16 min. This study presents a novel hybrid system that offers additional insights into enhancing the efficiency of O₃-based AOPs.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 4","pages":"Article 117215"},"PeriodicalIF":7.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In situ preparation of imidazolyl ionic liquid molecular cation moisture-resistant A3Bi2I9 perovskite crystals for efficient photocatalytic water purification and hydrogen production","authors":"Yao-Yao Wang ,&nbsp;Yu-Qing Wang ,&nbsp;Chunfeng Wang ,&nbsp;Yuqiao Chai ,&nbsp;Xiaoxue Liu ,&nbsp;Zhaoyang Wang ,&nbsp;Hongjie Zhu ,&nbsp;Hui-Juan Wang ,&nbsp;Dong Wang","doi":"10.1016/j.jece.2025.117218","DOIUrl":"10.1016/j.jece.2025.117218","url":null,"abstract":"<div><div>Bismuth-based halide perovskites are semiconductors that respond well to light and can be used in reactions triggered by visible light. However, their structure makes them unstable in wet or aqueous conditions, limiting their use in water-based reactions. This paper presents a new method to create two moisture-resistant bismuth-based perovskites, (1,3-diethylbenzimidazole)₃Bi₂I₉ and (1-Methyl-3-ethyl-benzimidazole)₂(1,3-diethylbenzimidazole)Bi₂I₉, by using N-methylbenzimidazole and N-ethylbenzimidazole with bismuth iodide. During this process, ethanol molecules in the solvent modify the N atoms at the 3-position of the benzimidazole molecules, with the help of hydroiodic acid, to form ionic liquids. The new perovskite materials do not contain alkali metal ions or organic ammonium ions, but rather ionic liquid cations (1,3-diethylbenzolamazole)⁺ and (1-methyl-3-ethylbenzimidazole)⁺, thus giving them excellent moisturizing properties. The study also improves the photocatalytic performance of these materials by making them into micron-sized sheets using the anti-solvent method. Under visible light, the materials show high efficiency in reducing Cr(VI) (95.3 % and 92.3 % for the two materials) and producing hydrogen from HI splitting (2053.59 and 1957.76 μmol g⁻¹h⁻¹). This research not only develops a method for creating moisture-resistant perovskites with ionic liquids but also shows potential for using these materials in photocatalytic reactions in water.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 4","pages":"Article 117218"},"PeriodicalIF":7.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eco-friendly synthesized g-C3N4/[B]ZSM-5 zeolite nanocomposites as smart fillers for epoxy coatings with excellent anticorrosion, self-healing, and hydrophobic performance","authors":"Sara Fazli-Shokouhi ,&nbsp;Farzad Nasirpouri ,&nbsp;Bahram Ramezanzadeh","doi":"10.1016/j.jece.2025.117211","DOIUrl":"10.1016/j.jece.2025.117211","url":null,"abstract":"<div><div>In this study, we design a novel borosilicate zeolite/g-C₃N₄ (GCN) composite loaded with Zn²⁺ ions to synergistically enhance barrier protection and active corrosion inhibition. Borosilicate zeolite (B) with a high Si/B molar ratio was synthesized via the hydrothermal method and subsequently composited with g-C₃N₄ (GCN) through thermal condensation and in situ polymerization using melamine as a precursor. Among the synthesized nanocomposites, B-53.1 %GCN (containing 53.1 wt% GCN, as determined by thermogravimetric analysis (TGA)) was selected as a novel nanofiller for epoxy-based coatings. Additionally, B, GCN, and B-53.1 %GCN were loaded with Zn²⁺ ions (denoted as B-Zn, GCN-Zn, and B-53.1 %GCN-Zn) leveraging the cation exchange capability of zeolites and electrostatic interactions with nitrogen in GCN. The release of Zn²⁺ ions in 3.5 wt% NaCl solution was tracked over 48 h, while electrochemical impedance spectroscopy <em>(</em>EIS) confirmed the formation of a protective film on steel. Tafel (potentiodynamic) polarization tests after 48 h of immersion revealed that B-53.1 % GCN-Zn exhibited the highest corrosion inhibition efficiency (80.2 %) by simultaneously suppressing anodic and cathodic reactions. Epoxy (EP) coatings containing 0.5 wt% of the synthesized fillers (with/without Zn²⁺) were investigated for their barrier properties using EIS, salt spray, and cathodic delamination tests. The EP/B-53.1 % GCN and EP/B-53.1 % GCN-Zn coatings demonstrated superior anti-corrosion performance, with |Z|₁₀ₘ_Hz values 813 and 912 times greater than bare epoxy after 202 days of immersion, respectively. Furthermore, scratched coatings immersed in 3.5 wt% NaCl exhibited self-healing behavior, as evidenced by increased R_t(total)(R_coat(c) +R_{charge transfer(ct)}) values for EP/B-Zn and EP/B-53.1 %GCN-Zn compared to unmodified epoxy.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 4","pages":"Article 117211"},"PeriodicalIF":7.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Specialized nanotubular MnOx-CeO2/TiO2 composite catalysts for simultaneous low-temperature elimination of nitric oxide and ortho-dichlorobenzene","authors":"Qiulin Wang ,&nbsp;Jiaxin Feng ,&nbsp;Yaqi Peng ,&nbsp;Zhihao Wu ,&nbsp;Sunan Yu ,&nbsp;Shengyong Lu ,&nbsp;Minghui Tang ,&nbsp;Jing Jin","doi":"10.1016/j.jece.2025.117229","DOIUrl":"10.1016/j.jece.2025.117229","url":null,"abstract":"<div><div>Novel TiO₂-supported MnO_<em>x</em>-CeO₂ nanotubular catalysts (denoted as MnCe/Ti-NTs) were engineered for the simultaneous catalytic oxidation of ortho-dichlorobenzene (o-DCBz, CBCO) and selective catalytic reduction of NO with ammonia (NH₃-SCR). The catalyst with optimized Mn/Ti (0.30) and Ce/Ti (0.10) molar ratios exhibits superior catalytic performance for both the CBCO and NH₃-SCR reactions, achieving &gt;90 % conversion efficiencies for both pollutants within the range of 275–360 °C. This outstanding performance originates from the well-balanced surface acidity and redox properties of the Mn_0.30Ce_0.10/Ti-NTs catalyst. Notably, this catalyst exhibits remarkable reaction selectivity and strong resistance to CBCO interference, with NH₃-SCR preferentially proceeding. Moreover, CBCO modulates the redox properties of the catalyst and suppresses the non-selective oxidation of NH₃ above 300 °C, which enhances the high-temperature deNO_<em>x</em> reaction. Although competitive adsorption between NH₃-SCR and CBCO for surface reactive oxygen species raises the T_{90 %} for o-DCBz conversion from 225 °C to 275 °C and slightly reduces the CO₂ selectivity, the H protons generated from NH₃ activation promote the dichlorination of o-DCBz and then remove the Cl atom in the form of HCl. To optimize the simultaneous low-temperature catalytic removal of o-DCBz and NO, further enriching the MnCe/Ti-NTs catalyst with surface reactive oxygen species is crucial. These findings provide both theoretical insights and practical guidance for designing dual-functional catalysts for the simultaneous catalytic removal of chlorinated volatile organic compounds (CVOCs) and NO_<em>x</em> at low temperatures.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 4","pages":"Article 117229"},"PeriodicalIF":7.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Continuous and efficient production of CH4/THF/DIOX composite hydrates for energy dense storage under moderate conditions","authors":"Yifan Xu,&nbsp;Peng Zhang,&nbsp;Xin Xiang,&nbsp;Rongtong Qin,&nbsp;Daiming Liu,&nbsp;Guodong Zhang,&nbsp;Fei Wang","doi":"10.1016/j.jece.2025.117225","DOIUrl":"10.1016/j.jece.2025.117225","url":null,"abstract":"<div><div>Hydrates provide a new approach for energy dense storage under moderate conditions, but poor hydration efficiency and the inability to continuously produce hydrates impede their commercialization. In order to address these two issues, a novel strategy was proposed to achieve hydrate continuous and efficient production under moderate conditions, the dual thermodynamic promoter of THF and DIOX was used to improve hydrate production pressure, D-leucine was employed to accelerate hydrate production kinetics, while the integration of hydrate generation, separation and storage was achieved using a spiral-agitated reactor. Exceptional hydrate production efficiency, conveying efficiency and storage efficiency were obtained, 90 % hydrate production can be completed within 19.21 min, the storage tank can be fully filled within 10 min, and methane apparent storage capacity in the storage tank is up to 79.21 V/V at 3.8 MPa, the energy storage density increases 87.08 % comparing with compressed methane. Raman spectroscopy was used to evaluate hydrate structures, and it is evident that a composite hydrate of CH₄/THF/DIOX was formed. The proposed strategy simplifies hydrate production process, causing it to be more energy-efficient, and the average energy consumption for producing one mole hydrates is only 0.00973 kW·h.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 4","pages":"Article 117225"},"PeriodicalIF":7.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revealing the pivotal role of B/N-co-doping onto carbon nanospheres for promoted sulfamethoxazole degradation and its bio-toxicity evaluation","authors":"Jing Wang ,&nbsp;Enhui Jiang ,&nbsp;Mingyang Jia ,&nbsp;Baosong Xing ,&nbsp;Chen Fang ,&nbsp;Haoqi Wang ,&nbsp;Jiaying Yan ,&nbsp;Chuanying Pan ,&nbsp;Xiang Liu ,&nbsp;Xianyong Lan","doi":"10.1016/j.jece.2025.117152","DOIUrl":"10.1016/j.jece.2025.117152","url":null,"abstract":"<div><div>The doping of hetero-atoms into carbon framework could significantly regulate and activate inherent active sites of carbon configuration, thus promoting the catalytic performance of carbon catalysts. However, the mechanisms are contradictory, more effort needs to be put into mechanism insight. Herein, we designed and synthesized B/N-co-doped carbon nanospheres (B/N-CNS) in activating peroxymonosulfate (PMS) for promoted sulfamethoxazole degradation <em>via</em> nonradical oxidation pathway. Fully physical characterizations highlighted that as-obtained B/N-CNS exhibited a uniform structure of nanosphere with abundant B-N bond and B-C bond at the surface, which was beneficial to attract PMS and sulfamethoxazole (SMX) <em>via</em> Lewis acid-base effect. Quenching tests and electron paramagnetic resonance (EPR) analysis confirmed that the co-doped B/N atoms in B/N-CNS was conducive to the selective singlet oxygen(¹O₂) generation from PMS activation. Indeed, B/N-CNS also exhibited a much higher degradation efficiency (93.12 %) and mineralization rate (73.29 %) than those of N-CNS (78.00 %, 59.39 %) and B-CNS (47.55 %, 26.20 %) on SMX degradation, respectively. In addition, Ecological Structure-Activity Relationships (ECOSAR) model also illustrated the bio-toxicity of SMX to green algae, fish and daphnid was significantly reduced to ecological environment safety standards after treatment of B/N-CNS/PMS system.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 4","pages":"Article 117152"},"PeriodicalIF":7.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}