Journal of Environmental Chemical Engineering最新文献_第10页

Microbial-assisted copper migration stabilizes Fe/Cu cathodes for long-term bioelectro-Fenton degradation of bisphenol A 微生物辅助铜迁移稳定Fe/Cu阴极用于长期生物电- fenton降解双酚A

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121223

Chi-Wen Lin , Yu-Cheng Chiang , Hui Suan Ng , Shu-Hui Liu , Yi-Kai Yang

A three-chamber bioelectro-Fenton (BEF) system using a Fe/Cu composite carbon cloth cathode (Fe/Cu@CC) was developed to overcome the poor degradability of bisphenol A (BPA) and the instability of conventional Fenton processes, while enabling simultaneous pollutant removal and metal recovery. The novelty of this study lies in a systematic investigation of Cu²⁺ migration and its impacts on BEF system performance, including Fe²⁺/Fe³ ⁺ redox cycling, microbial community distribution, pollutant degradation efficiency, cathode stability, and metal release. In addition, the influence of different three-chamber BEF configurations on Cu²⁺ migration and overall system performance is examined. Under optimal conditions (NaAc 1000 mg/L, Cu²⁺ 50 mg/L, pH 5, and aeration rate of 1 L min⁻¹), almost complete BPA removal was achieved within 36 h. Cu²⁺ migration facilitated the Fe³ ⁺/Fe²⁺ redox cycle and inhibited iron precipitation, allowing the system to retain over 60 % removal efficiency after eight cycles, with voltage output and power density increasing by 33.7 mV and 18.2 %, respectively. Electrochemical analyses indicated an oxygen reduction electron transfer number of 2.61 and an H₂O₂ selectivity of 80 %. Reactive species identification confirmed that •OH, •O₂⁻, and ¹O₂ were the dominant oxidants. Microbial community analysis revealed that Cu²⁺ migration remarkably increased the relative abundance of electroactive Desulfuromonadaceae from 0.14 % to 33.7 %, contributing to enhanced system stability. By-product evaluation revealed complete mineralization of hydroquinone and oxalic acid, with no detectable residues remaining. Overall, the Cu²⁺-mediated Fe/Cu@CC cathode significantly strengthens redox cycling and electrochemical stability, offering a sustainable BEF strategy for organic pollutant remediation and metal regeneration.

采用Fe/Cu复合碳布阴极（Fe/Cu@CC）开发了一种三室生物电Fenton （BEF）系统，以克服双酚A （BPA）的可降解性差和传统Fenton工艺的不稳定性，同时实现污染物去除和金属回收。本研究的新颖之处在于系统地研究了Cu 2 +迁移及其对BEF系统性能的影响，包括Fe 2 + /Fe³ +氧化还原循环、微生物群落分布、污染物降解效率、阴极稳定性和金属释放。此外，还研究了不同三腔BEF配置对Cu 2 +迁移和系统整体性能的影响。在最佳条件下（NaAc 1000 mg/L, Cu 2 + 50 mg/L, pH 5，曝气率1 L min⁻¹），可以在36 h内几乎完全去除BPA。Cu 2 +的迁移促进了Fe³ + /Fe 2 +的氧化还原循环，抑制了铁的析出，使系统在8个循环后的去除率保持在60% %以上，输出电压和功率密度分别提高了33.7 mV和18.2 %。电化学分析表明，氧还原电子转移数为2.61，H₂O₂选择性为80 %。反应物种鉴定证实•OH，•O₂⁻和¹O₂是主要的氧化剂。微生物群落分析显示，Cu 2 +迁移显著提高了电活性Desulfuromonadaceae的相对丰度，从0.14 %提高到33.7 %，有助于增强系统稳定性。副产物评价显示对苯二酚和草酸完全矿化，没有检测到残留。总体而言，Cu 2 +介导的Fe/Cu@CC阴极显著增强了氧化还原循环和电化学稳定性，为有机污染物修复和金属再生提供了可持续的BEF策略。

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引用次数: 0

Calcium transformation and product evolution behaviors in maleic acid–mediated indirect CO2 mineralization of carbide slag 马来酸介导的电石渣间接CO2矿化过程中钙的转化及产物演化行为

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121204

Zhenwu Shi , Zhihui Shen , Jianlong Wang , Bingjie Zhou , Hanchi Wang

Indirect carbonation of carbide slag (CS) offers a promising route for simultaneous CO₂ sequestration and value-added utilization of CS. Identifying a leaching agent that also enables controlled mineralization is the key to process performance. This study investigated Ca transformation and product evolution behaviors during maleic acid (MA)-mediated CS indirect carbonation. The results show that Ca extraction increases significantly with increasing MA concentration and leaching time, reaching a maximum of 97.89 % at a MA/Ca molar ratio of 2:1 for 5 min. Excess MA causes a decrease in Ca extraction due to supersaturation and precipitation of Ca(HC₄H₂O₄)₂. Ca²⁺ transition pathway during CO₂ mineralization depends strongly on the initial solution pH. At pH 9–12, the high activity of HCO₃⁻ leads to Ca²⁺ precipitation into CaC₄H₂O₄·2 H₂O. Interestingly, as pH exceeds 13, persistent dominance of CO₃²⁻ over solution speciation drives rapid amorphous CaCO₃ nucleation and CaC₄H₂O₄·2 H₂O dissolution, ultimately forming calcite via dissolution–reprecipitation mechanism. Moreover, CaCO₃ nucleation and growth balance control carbonation efficiency and product morphology. An 85.11 % of carbonation efficiency with nano-calcite can be obtained at 35°C for 35 min with a CO₂ flow rate of 0.5 L/min. Furthermore, Ca²⁺ conversion and crystal aspect ratio both increase with increasing temperature, resulting in a carbonation efficiency over 90 % with abundant aragonite at 75°C. Efficient CO₂ sequestration and nano-CaCO₃ can be achieved simultaneously from CS with MA mediation and conditions regulation. This study reveals the MA-mediated indirect carbonation mechanism, providing solvent selection guidance and theoretical basis for efficient carbon fixation and value-added utilization of CS.

电石渣间接碳化为电石渣的同时固碳和增值利用提供了一条很有前途的途径。确定一种能够控制矿化的浸出剂是工艺性能的关键。研究了马来酸介导的CS间接碳酸化过程中Ca的转化和产物演化行为。结果表明：随着MA浓度的增加和浸出时间的延长，Ca的提取率显著提高，当MA/Ca摩尔比为2:1时，浸出时间为5 min， Ca的提取率达到97.89 %。过量的MA会导致Ca(HC4H2O4)2的过饱和和沉淀，从而降低Ca的萃取量。在CO2矿化过程中，Ca2+的过渡途径强烈依赖于初始溶液pH。在pH 9-12时，HCO3−的高活性导致Ca2+沉淀成CaC4H2O4·2 H2O。有趣的是，当pH超过13时，CO32−对溶液形态的持续优势驱动CaCO3快速非晶态成核和CaC4H2O4·2 H2O溶解，最终通过溶解-再沉淀机制形成方解石。CaCO3的成核和生长平衡控制着碳化效率和产物形态。在35℃、35 min、CO2流速0.5 L/min条件下，纳米方解石的碳化效率可达85.11 %。此外，Ca2+转化率和晶体长径比均随温度升高而增加，在75℃时碳化效率超过90 %，文石含量丰富。在MA的调解和条件调节下，CS可以同时实现高效的CO2固存和纳米caco3。本研究揭示了ma介导的间接碳化机理，为CS的高效固碳和增值利用提供了溶剂选择指导和理论依据。

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引用次数: 0

Comprehensive utilization of copper slag: An overview 铜渣综合利用综述

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121209

Zhijie Wu , Jun Zhou , Jinglong Liang , Dongxing Huo

Copper slag, a by-product of copper smelting, has long been regarded as waste. However, with the advancement of resource recovery technologies and growing environmental awareness, copper slag is undergoing a transformation from an "environmental burden" to an "urban mine." Focusing on this transition, this study systematically analyzes the comprehensive utilization pathways of copper slag, covering key application areas such as metal recovery, building materials, environmental protection materials, industrial fillers, ceramic raw materials, and agricultural ameliorants. The research not only compares the maturity and economic viability of various technological routes but also aims to construct a complete resource value chain for copper slag. The study provides decision-making support for promoting cross-industry collaborative utilization and sustainable development.

铜渣是铜冶炼的副产品，长期以来一直被视为废物。然而，随着资源回收技术的进步和环保意识的增强，铜渣正经历着从“环境负担”向“城市矿山”的转变。本研究围绕这一转变，系统分析了铜渣的综合利用途径，涵盖了金属回收、建材、环保材料、工业填料、陶瓷原料、农业改良剂等重点应用领域。本研究不仅比较了各种工艺路线的成熟度和经济可行性，而且旨在构建完整的铜渣资源价值链。为促进跨行业协同利用和可持续发展提供决策支持。

引用次数: 0

Effect of CO2 aeration and high light intensity on the performance of CO2 absorption-microalgae conversion system CO2曝气和强光对CO2吸收-微藻转化系统性能的影响

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121210

Dantong Wang, Yizhen Wei, Yaoqi Hou, Chunfeng Song

To mitigate global warming, it is urgent to implement carbon emission reduction. CO₂ chemical absorption and microalgae conversion system (CAMC) can achieve low-energy CO₂ capture and effective resource utilization, and has been a sustainable technology to achieve carbon neutrality. However, the carbon fixation capacity and resource utilization efficiency of CAMC system is still needed to be promoted. Therefore, the synergistic treatment of CO₂ aeration (2.5 % CO₂) and high light intensity was applied on Dunaliella in CAMC system, and the effect was comprehensively evaluated. The results showed that this synergistic treatment could effectively promote microalga growth by upregulating the expression of genes related to photosynthesis and carbon metabolism. The optimal biomass concentration was obtained in the group given high light on the third day (3-CO₂+HL group), and it reached 623.0 mg/L which was 1.3-fold higher than control. In addition, the cooperative treatment made the expression of genes relevant to citrate cycle (TCA), glycolysis, and β-carotene bio-synthesis pathway upregulate and effectively induced the value-added compounds accumulation in CAMC system. The concentration of β-carotene was 1.9 times higher than that of the control group. This study provided an approach to enhance carbon fixation capacity and achieve higher resource utilization efficiency in CAMC system.

为减缓全球变暖，实施碳减排迫在眉睫。CO2化学吸收与微藻转化系统（CAMC）可以实现低能耗CO2捕集和有效的资源利用，是实现碳中和的一种可持续技术。但是，CAMC系统的固碳能力和资源利用效率仍有待提高。因此，在CAMC体系中采用CO2曝气（2.5 % CO2）和高光强协同处理杜氏藻，并对效果进行综合评价。结果表明，这种协同处理可以通过上调光合作用和碳代谢相关基因的表达，有效促进微藻的生长。第3天光照组（3-CO2+HL组）的生物量达到最佳浓度，达到623.0 mg/L，是对照的1.3倍。此外，协同处理使柠檬酸循环（citrate cycle， TCA）、糖酵解和β-胡萝卜素生物合成途径相关基因表达上调，有效诱导CAMC系统中增值化合物积累。β-胡萝卜素浓度是对照组的1.9倍。该研究为增强CAMC系统的固碳能力和实现更高的资源利用效率提供了途径。

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引用次数: 0

Production of glycerol butyl acetal as a biofuel additive via acetalization over a sulfonated solid acid carbon catalyst derived from bamboo charcoal 竹炭磺化固体酸碳催化剂上缩醛化生产生物燃料添加剂甘油丁缩醛

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121195

Thidarat Kunawong , Koson Saoron , Titiporn Wattanakul , Jenjira Phuriragpitikhon , Artit Ausavasukhi

A series of highly efficient and selective solid acid carbon catalysts (BBxS4) were successfully synthesized from renewable bamboo charcoal (BB) via a sulfonation process using varying concentrations of sulfuric acid (x = 3, 6, and 12 wt%) over a fixed duration of 4 h. These heterogeneous catalysts were subsequently tested in the acetalization of glycerol with butyraldehyde to synthesize glycerol butyl acetals (GBAs), a promising, high-value oxygenate fuel additive designed for effective PM2.5 emission reduction. The BB6S4 catalyst exhibited optimal performance, achieving high glycerol conversion and superior regioselectivity towards the kinetically favored 4-hydroxymethyl-2-propyl-1,3-dioxolane (5-GBA, a 5-membered ring product), consistently maintaining selectivity around 90 %. Furthermore, the BB6S4 catalyst demonstrated robust reusability over four successive cycles. Although conversion slightly decreased from 80.95 % to 73.19 % across the four cycles, the excellent regioselectivity was almost perfectly preserved (88.26–90.02 % 5-GBA). Subsequent testing demonstrated that blending 5.0 vol% GBA with B7 diesel fuel resulted in a significant 16.94 % reduction in particulate matter (PM) and a desirable 5.34 % decrease in nitrogen oxides (NO_x) emissions, confirming GBA’s dual benefit as an effective emission control agent.

以可再生竹炭（BB）为原料，采用不同浓度硫酸（x = 3、6和12 wt%）、固定时间为4 h的磺化工艺，成功合成了一系列高效选择性固体酸碳催化剂（BBxS4）。这些多相催化剂随后在甘油与丁醛的缩醛化反应中进行了测试，以合成甘油丁醛缩醛（GBAs），这是一种有前途的高价值含氧燃料添加剂，旨在有效减少PM2.5的排放。BB6S4催化剂表现出最佳性能，对动力学上有利的4-羟甲基-2-丙基-1,3-二氧唑烷（5-GBA，一种5元环产物）具有较高的甘油转化率和优越的区域选择性，始终保持90% %左右的选择性。此外，BB6S4催化剂在连续四个循环中表现出强大的可重复使用性。虽然转化率从80.95 %略微下降到73.19 %，但优异的区域选择性几乎完全保留（88.26-90.02 % 5-GBA）。随后的测试表明，将5.0 vol%的GBA与B7柴油混合后，颗粒物（PM）显著减少16.94% %，氮氧化物（NOx）排放量减少5.34% %，证实了GBA作为一种有效的排放控制剂的双重好处。

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引用次数: 0

Charge carrier separation and transfer in Sn3O4-Ni-g-C3N4 nanostructures for efficient photocatalytic H2O2 generation and tetracycline hydrochloride degradation Sn3O4-Ni-g-C3N4纳米结构中电荷载流子的分离和转移用于光催化H2O2生成和盐酸四环素的高效降解

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121215

Shuangyu Wang , Wenbin Shi , Ping Yang , Xiao Zhang

Photogenerated charge carrier separation/transfer efficiency and redox ability are often considered for highly efficient photocatalysts. In this paper, Sn₃O₄ nanocomponents with much positive valence band were grown on superior thin Ni-doped graphitic carbon nitrides (g-C₃N₄) to construct Sn₃O₄/Ni-g-C₃N₄ heterojunction photocatalyst towards enhanced photocatalytic H₂O₂ generation and tetracycline hydrochloride degradation. Namely, the synthesis of Ni-g-C₃N₄ nanosheets was finished by a two-step thermal polymerization at 600 and 700ºC, respectively, and then, the growth of Sn₃O₄ nanosheets was completed by a solvothermal route to create Z-scheme Sn₃O₄/Ni-g-C₃N₄ heterojunctions. The built-in electric field formation resulted in enhanced photogenerated charge carrier separation and transfer which improved photocatalysis efficiency. Sn₃O₄ nanosheets promoted the photogenerated charge carrier separation, thereby preserving strong redox ability for efficient H₂O₂ evolution. Furthermore, Sn₃O₄/Ni-g-C₃N₄-2 composites exhibited respected photocatalysis performance, in which 91 % degradation of tetracycline hydrochloride was achieved within 60 min. The band gap structure, Z-scheme heterojunction formation, and photocatalytic degradation kinetics were discussed via various characterizations. In addition, a high H₂O₂ yield of 4193 μmol·g⁻¹·h⁻¹ was obtained using the Sn₃O₄/Ni-g-C₃N₄ heterojunction sample, in which its performance was 1.42 and 3.70 times that of the sample Sn₃O₄/g-C₃N₄ composites and pristine g-C₃N₄ nanosheets, respectively. The H₂O₂ evolution process via a two-electron oxygen reduction pathway was discussed.

光生电荷载流子分离/转移效率和氧化还原能力通常被认为是高效光催化剂。本文在超薄的ni掺杂石墨碳氮化物（g-C3N4）上生长具有多正价带的Sn3O4纳米组分，构建Sn3O4/Ni-g-C3N4异质结光催化剂，增强光催化H2O2生成和盐酸四环素降解。即分别在600℃和700℃下进行两步热聚合合成Ni-g-C3N4纳米片，然后通过溶剂热途径完成Sn3O4纳米片的生长，形成z型Sn3O4/Ni-g-C3N4异质结。内置电场的形成增强了光生电荷载流子的分离和转移，提高了光催化效率。Sn3O4纳米片促进了光生成的载流子分离，从而保持了较强的氧化还原能力，有利于H2O2的高效析出。此外，Sn3O4/Ni-g-C3N4-2复合材料具有良好的光催化性能，在60 min内实现了91% %的盐酸四环素降解。通过各种表征方法讨论了带隙结构、z型异质结形成和光催化降解动力学。此外，Sn3O4/Ni-g-C3N4异质结样品的H2O2产率高达4193 μmol·g⁻1·h⁻1，其性能分别是Sn3O4/g- c3n4复合材料样品和原始g- c3n4纳米片样品的1.42倍和3.70倍。讨论了双电子氧还原途径下H2O2的演化过程。

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引用次数: 0

Integrated enrichment-photocatalytic platform based on exfoliated vermiculite: Construction of CdS/PTI S-scheme heterojunction and mechanism of photocorrosion resistance 基于脱落蛭石的集成富集-光催化平台：CdS/PTI S-scheme异质结的构建及耐光腐蚀机理

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121205

Ning Zhang , Qingyang Xu , Ke Cui , Yi Wang , Xue Yang , Hui Zhao , Huaizhi Shao , Dongping Tao , Yu Zhang , Qian Zhang

In this study, a ternary eVT/CdS/PTI composite was successfully prepared by constructing an S-scheme heterojunction between CdS and PTI and supporting it on exfoliated vermiculite (eVT). This integrated system achieves rapid degradation of TC enriched from aqueous solution while mitigating the photocorrosion susceptibility of CdS during photocatalytic processes. The results demonstrate that the eVT/CdS/PTI composite exhibits excellent adsorption capacity and photocatalytic activity, with a maximum TC adsorption capacity of 23 mg/g and a degradation efficiency of 99.2 % within 15 min under visible light irradiation. After three cycles, the degradation efficiency remained above 90 %, indicating high stability. Characterization and computational analyses reveal that the successful construction of the S-scheme heterojunction establishes an internal electric field at the CdS/PTI interface, which effectively facilitates the separation and migration of photogenerated charge carriers and suppresses the photocorrosion of CdS. This work developed a novel eVT/CdS/PTI composite with synergistic adsorption and photocatalytic functions. By employing an S-scheme heterojunction mechanism, the material significantly enhances photocatalytic stability and performance, offering a new strategy and theoretical foundation for designing efficient and stable photocatalysts for environmental pollution remediation.

本研究通过构建CdS与PTI之间的s型异质结，并将其支撑在脱落蛭石（eVT）上，成功制备了三元eVT/CdS/PTI复合材料。该集成系统实现了从水溶液中富集的TC的快速降解，同时减轻了cd在光催化过程中的光腐蚀敏感性。结果表明，eVT/CdS/PTI复合材料具有优异的吸附能力和光催化活性，在可见光照射下，最大TC吸附量为23 mg/g，在15 min内降解效率为99.2 %。经过3次循环后，降解效率保持在90 %以上，稳定性好。表征和计算分析表明，s型异质结的成功构建在CdS/PTI界面处建立了一个内部电场，有效地促进了光生载流子的分离和迁移，抑制了CdS的光腐蚀。本研究开发了一种具有协同吸附和光催化功能的新型eVT/CdS/PTI复合材料。该材料利用s型异质结机制，显著提高了光催化稳定性和性能，为设计高效稳定的光催化剂用于环境污染修复提供了新的策略和理论基础。

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引用次数: 0

Multivalent iron in waste steel rust serves as efficient electrocatalyst for flow-through removal of tetracyclines in wastewater 废钢铁锈中的多价铁是废水中四环素的高效电催化剂

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121201

Yijia Ran , Kehan Yang , Zhihao He , Xinrong Wang , Huiqin Chen , Chengyi Huang , Junzhuo Cai

Tetracycline antibiotics (TCs) pose escalating environmental threats due to their persistence and resistance gene dissemination. Herein, this research pioneered a waste-derived structured electrode by immobilizing polycrystalline waste steel rust (WSR) on honeycomb activated carbon (HAC@WSR) as a third-electrode for flow-through TCs removal. Under the optimal conditions of cell voltage 10 V, initial solution pH 7.5 ± 0.2, and flow rate 5 mL min⁻¹, the system achieved a removal rate (k_obs) of 0.055 min⁻¹, approximately double that of commercial Fe powder, FeO, or Fe₃O₄ with k_obs of 0.025–0.032 min⁻¹. Integrated analyses reveal dual enhancement mechanisms: (1) Electric-field-promoted adsorption via WSR-mediated chemisorption (HAC@WSR exhibits an equilibrium adsorption capacity of 118.46 mg g⁻¹ for tetracycline hydrochloride (TCH), 2.02 times higher than static adsorption), where adsorbed TCs self-optimize electrode activity; (2) Multivalent iron-triggered generation of diverse radicals (•OH, •O₂^-, H*) at the electrode surface, accelerating ring-opening mineralisation with negligible aquatic toxicity in final products. Under continuous operation, the three-dimensional electrochemical system (3DES) achieved about 95 % removal for TCs, with effluent TCs concentrations remained below 0.1 mg L⁻¹. Compared with the two-dimensional electrochemical system (2DES) without HAC@WSR, the 3DES exhibited a 40.6 % enhancement in TCH removal efficiency. Under 360 min of continuous flow operation, the 3DES maintained a removal efficiency of > 90 % for TCs with negligible iron leaching, while the 2DES had a breakdown. Additionally, the 3DES significantly improving wastewater’s biodegradability (BOD₅/COD increased from 0.15 to 0.44), enabling practical integration as a biological pretreatment. This work establishes a "waste-to-clean-water" paradigm aligned with circular economy principles, simultaneously addressing metal waste recycling and antibiotic contamination.

四环素类抗生素由于其持久性和耐药基因的传播，对环境的威胁日益严重。在此，本研究通过将多晶废钢锈病（WSR）固定在蜂窝活性炭（HAC@WSR）上作为第三电极，开创了一种废物衍生的结构电极，用于流动TCs去除。在电池电压为10 V，初始溶液pH为7.5 ± 0.2，流速为5 mL min−1的最佳条件下，系统的去除率（kobs）为0.055 min−1，约为商业铁粉，FeO或Fe3O4的两倍，kobs为0.025-0.032 min−1。综合分析揭示了双重增强机制：(1)电场促进了wsr介导的化学吸附（HAC@WSR对盐酸四环素（TCH）的平衡吸附容量为118.46 mg g−1，比静态吸附高2.02倍），其中吸附的tc自优化电极活性；(2)多价铁在电极表面触发多种自由基（•OH，•O2-, H*）的产生，加速开环矿化，最终产物的水生毒性可忽略不计。在连续运行下，三维电化学系统（3DES）对TCs的去除率达到95% %左右，出水TCs浓度保持在0.1 mg L−1以下。与不含HAC@WSR的二维电化学体系（2DES）相比，3DES对TCH的去除率提高了40.6 %。在360 min的连续流运行下，3DES对TCs的去除率保持在>； 90 %，铁浸出可以忽略不计，而2DES则发生击穿。此外，3DES显著提高了废水的可生化性（BOD5/COD从0.15提高到0.44），可以作为生物预处理进行实际整合。这项工作建立了一个符合循环经济原则的“废物到清洁水”模式，同时解决了金属废物回收和抗生素污染问题。

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引用次数: 0

Optimization of deep coalbed methane fracturing fluids in the southern Junggar Basin: Mechanisms, additives, and damage control 准噶尔盆地南部深层煤层气压裂液优化：机理、添加剂和损害控制

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121203

Yidong Li , Jienan Pan , Zhuyun Tang , Haichao Wang , Yibing Wang , Peng Lai , Zhenzhi Wang , Xuetian Du

The selection of fracturing fluids represents a pivotal aspect in the exploration of coalbed methane (CBM). The performance of fracturing fluids serves as the linchpin for determining the success of the fracturing process. This paper delves into the influence of fracturing fluids on deep coal seams in the southern Junggar Basin to optimize the CBM fracturing fluid system. Through coal powder expansion, surface tension, permeability damage, and friction resistance experiments, the potential damage mechanisms of coal were identified, and the optimal amounts of various additives were determined. The results showed that the optimal contents of the clay stabilizer, surfactant, and drag reducer were 1 wt%, 0.2 wt%, and 0.1 wt%, respectively. This combination is capable of efficiently minimizing the damage to the coal reservoir resulting from water sensitivity and water blocking. Moreover, the prepared drag reducing agent exhibited an excellent drag reduction effect during its injection into the coal seam. This fracturing fluid formula has well adaptability to coal reservoirs of different coal rank. Liquid-phase damage and solid-phase damage were the primary causes of reservoir damage. Water sensitivity, water blocking, fracturing fluid residues, alkali sensitivity, and stress were the key controlling factors; their contribution rates to coal reservoir damage were 23.2 %, 8.3 %, 52.5 %, 6.2 %, and 9.8 %, respectively. This research significantly contributed to the understanding of the damage mechanisms of coal reservoirs. It further enriches the optimization process of fracturing fluids. Moreover, it provides a solid theoretical foundation for the design of CBM fracturing operations.

压裂液的选择是煤层气勘探中的一个关键问题。压裂液的性能是决定压裂过程是否成功的关键。通过研究压裂液对准噶尔盆地南部深部煤层的影响，优化煤层气压裂液体系。通过煤粉膨胀、表面张力、渗透性损伤和摩擦阻力实验，确定了煤粉的潜在损伤机理，确定了各种添加剂的最佳掺量。结果表明，粘土稳定剂、表面活性剂和减阻剂的最佳掺量分别为1 wt%、0.2 wt%和0.1 wt%。这种组合能够有效地减少水敏感性和水堵塞对煤储层的损害。制备的减阻剂在注入煤层过程中表现出良好的减阻效果。该压裂液配方对不同煤阶煤储层具有较好的适应性。液相损害和固相损害是造成储层损害的主要原因。水敏性、水堵性、压裂液残留、碱敏性和应力是主要控制因素；对煤储层损害的贡献率分别为23.2% %、8.3% %、52.5 %、6.2% %和9.8% %。该研究对煤储层损伤机理的认识具有重要意义。进一步丰富了压裂液的优选过程。为煤层气压裂作业设计提供了坚实的理论基础。

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引用次数: 0

Design of MIL-53(Al) with acidbase cooperative catalytic sites for the oriented conversion of cellulose 纤维素定向转化MIL-53（Al）的酸碱协同催化位点设计

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121220

Mengjiao Yu, Xiong-Fei Zhang, Mengjie Li, Jianan Song, Jianfeng Yao

The valorization of cellulose into valuable platform chemicals necessitates efficient and sustainable catalytic systems, where the acid-base properties of catalysts are critical for directing reaction pathways. This work presents the one-pot synthesis of a series of aluminum-based metal-organic frameworks (MIL-53) with tunable acid-base functionalities, achieved by modulating organic linkers. The successful formation of cooperative acid-base sites was confirmed by comprehensive characterization, including X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and pyridine adsorbed infrared spectra. Catalytic performance evaluations demonstrated that acid-base cooperative sites significantly enhance the oriented conversion of cellulose to 5-hydroxymethylfurfural (5-HMF). Under optimal conditions (190 °C, 8 h) in a tetrahydrofuran (THF)/NaCl-H₂O biphasic system, MIL-53-NH₂/SO₃H yielded 63.8 % 5-HMF, 6.3 % levulinic acid (LA), and 23.9 % formic acid (FA). The catalytic transformation of cellulose is a cascade process encompassing hydrolysis of cellulose to glucose, isomerization of glucose to fructose, dehydration to 5-HMF, and rehydration of 5-HMF to LA and FA. These results provide a promising strategy for designing efficient acid-base bifunctional catalysts for biomass conversion.

纤维素转化为有价值的平台化学品需要高效和可持续的催化系统，其中催化剂的酸碱性质对于指导反应途径至关重要。这项工作提出了一系列铝基金属有机框架（MIL-53）的一锅合成具有可调的酸碱功能，通过调节有机连接实现。通过x射线衍射、傅里叶变换红外光谱、x射线光电子能谱和吡啶吸附红外光谱等综合表征，证实了酸碱协同位的成功形成。催化性能评价表明，酸碱配合位点显著促进纤维素定向转化为5-羟甲基糠醛（5-HMF）。在最佳条件（190℃，8 h）下，MIL-53-NH2/SO3H在四氢呋喃(THF)/NaCl-H2O双相体系中得到63.8 % 5-HMF， 6.3 %乙酰丙酸（LA）和23.9 %甲酸（FA）。纤维素的催化转化是一个级联过程，包括纤维素水解成葡萄糖，葡萄糖异构化成果糖，脱水成5-羟甲基糠醛，5-羟甲基糠醛再水化成LA和FA。这些结果为设计高效的酸碱双功能生物质转化催化剂提供了一个有希望的策略。

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