Chemical Engineering and Processing - Process Intensification最新文献_第8页

Structure-induced flow modulation in static mixer plug flow reactors for gas–liquid contact intensification in ozone-based oxidation 臭氧基氧化中气液接触强化的静态混合器塞流反应器结构诱导流动调制

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-02-01 Epub Date: 2025-12-09 DOI: 10.1016/j.cep.2025.110655

Shanzhi Yuan , Lvliang Wang , Xuejing Yang , Yuanyuan Qian , Yanxia Xu

Limited ozone solubility hampers gas–liquid mass transfer in ozone-based advanced oxidation processes (AOPs), particularly in continuous flow reactors. Herein, high-resolution computational fluid dynamics simulations were integrated with a multi-objective optimisation framework to investigate the influence of geometric parameters on hydrodynamics, bubble dynamics and energy consumption in a static mixer plug flow reactor. Suboptimal gas inlet configurations induced buoyancy-driven gas holdup and backflow, substantially impairing dispersion and mixing uniformity, as indicated by the relative standard deviation (RSD) of gas-phase and bubble size distributions. Optimised inlet position and diameter promoted early fluid bifurcation and shear-induced bubble breakup, improving micro- and macro-mixing. Twisting elements generated localised velocity peaks and strong pressure gradients, efficiently converting pressure into kinetic energy and yielding radially stratified, symmetrical flows, facilitating gas–liquid contact. The number of mixing elements and downstream zone length governed mixing quality and pressure drop, and inlet parameters critically regulated bubble characteristics. The optimised configuration achieved an RSD of 0.790 and a pressure drop of 6435 Pa, reducing mixing heterogeneity and energy consumption by 13.6% and 18.1%, respectively, and yielding a favourable balance between mixing efficiency and energy use. This study establishes a quantitative structure–flow–performance relationship, providing a foundation for scalable, energy-efficient multi-phase reactor design for ozone-based AOPs, along with practical strategies for process intensification and sustainable water treatment.

在基于臭氧的高级氧化过程（AOPs）中，有限的臭氧溶解度阻碍了气液传质，特别是在连续流反应器中。本文采用高分辨率计算流体力学模拟与多目标优化框架相结合的方法，研究了几何参数对静态混合器塞流反应器流体力学、气泡动力学和能耗的影响。从气相和气泡尺寸分布的相对标准偏差（RSD）可以看出，次优的进气配置导致浮力驱动的气含率和回流，严重影响了分散和混合均匀性。优化的入口位置和直径促进了早期流体分叉和剪切诱导的气泡破裂，改善了微观和宏观混合。扭转元件产生局部速度峰值和强大的压力梯度，有效地将压力转化为动能，产生径向分层对称流动，促进气液接触。混合元件的数量和下游区长度决定混合质量和压降，入口参数对气泡特性有重要影响。优化后的RSD为0.790，压降为6435 Pa，混合不均匀性和能耗分别降低了13.6%和18.1%，在混合效率和能耗之间取得了良好的平衡。本研究建立了定量的结构-流量-性能关系，为基于臭氧的AOPs的可扩展、节能多相反应器设计以及工艺强化和可持续水处理的实用策略提供了基础。

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引用次数: 0

Process intensification strategies for metal organic framework-based membrane photocatalysis in industrial wastewater treatment : A review 金属有机框架膜光催化在工业废水处理中的工艺强化策略综述

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-01-01 Epub Date: 2025-11-07 DOI: 10.1016/j.cep.2025.110618

Meitri Bella Puspa, Tutuk Djoko Kusworo, Andri Cahyo Kumoro, Aji Prasetyaningrum, Shalahudin Nur Ayyubi, Luthfi Kurnia Dewi, Muhammad Naufal Luqmanulhakim, Muallim Syahrir

Industrial wastewater often comprises diverse and recalcitrant pollutants that challenge conventional treatment approaches. Membrane photocatalysis, a hybrid technique that integrates membrane separation and photocatalytic degradation, has garnered increasing attention for its potential to address these complexities. Metal–Organic Frameworks (MOFs), known for their high porosity, tunable chemistry, and large surface area, have emerged as promising photocatalysts within such systems. However, limitations such as suboptimal photocatalytic performance, membrane fouling, and stability concerns under operational conditions remain major barriers to large-scale implementation. While numerous studies have explored MOF-based membranes, a focused investigation into process intensification (PI) strategies specifically targeting industrial applications is lacking. This review uniquely highlights and synthesizes diverse PI approaches including metal/non-metal doping, MOFs functionalization, heterojunction engineering, advanced light management, and reactor system design to enhance MOFs-based membrane photocatalysis. The novelty lies in consolidating these strategies within the industrial wastewater context, emphasizing not only performance enhancement but also scalability and cost-effectiveness. This work contributes toward bridging laboratory innovations with real-world applications, especially in resource-constrained settings. Furthermore, the study aligns with global sustainability priorities, notably SDGs 6, 12, and 14 by offering critical insights for stakeholders to develop efficient, environmentally sustainable, and cost-effective strategies for industrial water treatment.

工业废水通常包含各种顽固性污染物，对常规处理方法构成挑战。膜光催化是一种集膜分离和光催化降解为一体的混合技术，因其解决这些复杂问题的潜力而受到越来越多的关注。金属有机骨架（mof）以其高孔隙率、可调化学性质和大表面积而闻名，已成为这类系统中很有前途的光催化剂。然而，诸如次优光催化性能、膜污染和操作条件下的稳定性问题等限制仍然是大规模应用的主要障碍。虽然许多研究已经探索了基于mof的膜，但缺乏针对工业应用的过程强化（PI）策略的重点研究。本文综述了金属/非金属掺杂、MOFs功能化、异质结工程、先进光管理和反应器系统设计等多种膜光催化方法，以增强基于MOFs的膜光催化。新颖之处在于将这些策略整合到工业废水环境中，不仅强调性能提高，还强调可扩展性和成本效益。这项工作有助于将实验室创新与实际应用联系起来，特别是在资源受限的情况下。此外，该研究与全球可持续发展优先事项保持一致，特别是可持续发展目标6、12和14，为利益相关者制定高效、环境可持续和具有成本效益的工业水处理战略提供了重要见解。

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引用次数: 0

CFD evaluation of a microchannel reactor for ammonia synthesis using a Ruthenium-based catalyst 基于钌基催化剂的氨合成微通道反应器的CFD评价

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-01-01 Epub Date: 2025-11-08 DOI: 10.1016/j.cep.2025.110624

Leonardo Bravo , Camilo Rengifo Gutierrez , Martha Cobo , Manuel Figueredo

This work evaluates the potential of microchannel reactors (MCR) for ammonia synthesis using ruthenium-based catalysts through computational fluid dynamics (CFD) modelling. A comprehensive CFD framework was developed that integrates mass and energy balances with modified Temkin-Pyzhev kinetics, and validated against experimental data from a packed-bed reactor (PBR) with <5 % error. The validated model was then applied to MCR configurations to assess the influence of operating conditions and reactor geometry. Results show that MCRs achieve up to 165 % higher ammonia productivity than PBRs under optimal conditions (100 bar, 430 °C), owing to the enhanced heat and mass transfer. Parametric studies identified temperature as the most critical operating parameter, while pressure had a secondary effect. Furthermore, increasing the catalytic layer thickness improved ammonia yields, although there are potential mass-transfer limitations. These findings demonstrate that MCRs can provide significant energy-efficiency gains and support decentralised ammonia production, highlighting their promise as a sustainable alternative to conventional Haber-Bosch technology.

本工作通过计算流体动力学（CFD）模型评估了微通道反应器（MCR）使用钌基催化剂合成氨的潜力。开发了一个综合的CFD框架，将质量和能量平衡与改进的Temkin-Pyzhev动力学集成在一起，并根据填充床反应器（PBR）的实验数据进行了验证，误差为<； 5%。然后将验证模型应用于MCR配置，以评估操作条件和反应堆几何形状的影响。结果表明，在最佳条件下（100 bar, 430°C），由于传热传质增强，mcr的氨产率比pbr高165%。参数研究确定温度是最关键的操作参数，而压力具有次要影响。此外，增加催化层厚度提高了氨收率，尽管存在潜在的传质限制。这些发现表明，mcr可以显著提高能源效率，并支持分散的氨生产，突出了它们作为传统Haber-Bosch技术的可持续替代品的前景。

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引用次数: 0

A perspective on process intensification in the textile industry: A pathway towards sustainable apparel sector 纺织业过程集约化的观点：通往可持续服装行业的途径

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-01-01 Epub Date: 2025-11-16 DOI: 10.1016/j.cep.2025.110630

Sagnik Chowdhury Shanko , Md. Mizanur Rahman , Mohidus Samad Khan

The apparel sector, despite playing an important role in economic development and employment generation around the world, poses significant sustainability challenges due to being highly resource-intensive and contributing to severe pollution of the environment. Therefore, this sector faces growing pressure from stakeholders to adopt cleaner production practices throughout the value chain, aiming to reduce resource consumption and to improve environmental impacts. Process Intensification (PI) tackles these challenges by redesigning unit operations and production strategies across the production processes. This article presents a novel viewpoint through a structured analysis of Process Intensification applications across textile processing stages, extending the scope toward waste minimization, hazardous chemical substitution, and resource recovery. Key textile processing stages, including yarn production and preparation, weaving, and wet processing, are analyzed with respect to the integration of different PI technologies such as compact spinning, foam sizing, pre-wet sizing, multi-phase loom, supercritical CO₂ dyeing, plasma treatment, bio-based dyeing, chemical recovery, and AI-based quality inspection. The article explores the technical foundations, operational benefits and challenges of these innovations. Compared to traditional technologies, counterpart PI technologies can reduce energy input, water consumption, chemical consumption, and GHG emissions by up to 86%, 100%, 95% and 84%, respectively. Along with policy frameworks, strategic investment, and capacity building, PI serves as a strategic catalyst in sustainable apparel manufacturing by optimizing resource, automation, redesigning recipes, improving productivity, and reducing pollution through recycling and upcycling. This article underscores the critical role of PI in fostering cleaner production and shaping the future of textile manufacturing.

尽管服装行业在世界各地的经济发展和创造就业方面发挥着重要作用，但由于高度资源密集型和造成严重的环境污染，该行业面临着重大的可持续性挑战。因此，该行业面临着来自利益相关者越来越大的压力，要求在整个价值链中采用清洁生产实践，旨在减少资源消耗并改善环境影响。过程强化（PI）通过在生产过程中重新设计单元操作和生产策略来解决这些挑战。本文通过对纺织加工阶段过程强化应用的结构化分析，提出了一种新的观点，将范围扩展到废物最小化，危险化学品替代和资源回收。本文分析了纺织加工的关键阶段，包括纱线生产和准备、织造和湿法加工，并结合了不同的PI技术，如紧密纺纱、泡沫上浆、预湿上浆、多相织机、超临界CO2染色、等离子体处理、生物基染色、化学回收和基于人工智能的质量检测。本文探讨了这些创新的技术基础、运营效益和挑战。与传统技术相比，相应的PI技术可以分别减少86%、100%、95%和84%的能源投入、水消耗、化学品消耗和温室气体排放。除了政策框架、战略投资和能力建设外，PI还通过优化资源、自动化、重新设计配方、提高生产率以及通过回收和升级回收减少污染，成为可持续服装制造业的战略催化剂。本文强调了PI在促进清洁生产和塑造纺织制造业未来方面的关键作用。

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引用次数: 0

Synergistic integration of sonication and cold plasma for intensified food processing: Mechanisms, applications, limitations, and future Prospects 超声和冷等离子体在强化食品加工中的协同整合：机制、应用、局限性和未来展望

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-01-01 Epub Date: 2025-11-18 DOI: 10.1016/j.cep.2025.110631

Chirantan Sandip Saigaonkar , Sandhya R Shewale , Uday S Annapure

Background

Advancements in food processing aim to preserve nutrient and bioactive integrity while enhancing microbiological safety without relying on thermal methods. Sonication-Assisted Cold Plasma (SACP) integrates mechanical ultrasound forces with reactive plasma chemistry to overcome limitations of individual treatments, such as limited penetration depth and uneven effects, making it a promising approach for preserving food quality and safety.

Methods

A systematic literature review was conducted following PRISMA 2020 guidelines. Peer-reviewed research articles published between January 2020 and May 2025 were identified from electronic databases, including Scopus, PubMed, and ScienceDirect. Studies evaluating combined ultrasound and cold plasma treatments on food dehydration, microbial inactivation, extraction, and protein modification were selected for narrative synthesis.

Results

SACP exhibited up to 47 % reduction in drying time, achieving over 3-log microbial load reductions. Mechanistically, ultrasound enhances cavitation and mass transfer, while cold plasma generates reactive species that oxidize microbial cells and modify food macromolecules. Challenges remain in scaling technology for industrial throughput, standardizing treatment protocols, and assessing byproduct safety and long-term product stability.

Conclusions

The synergistic integration of ultrasound and cold plasma presents a promising non-thermal approach for food processing with demonstrated efficiency, safety, and preservation of food quality. Future efforts should prioritize protocol harmonization, real-time process control, comprehensive safety evaluation, and economic feasibility to enable commercial adoption and sustainable food manufacturing.

食品加工的进步旨在保持营养和生物活性的完整性，同时提高微生物的安全性，而不依赖于热方法。超声辅助冷等离子体（SACP）将机械超声力与反应性等离子体化学相结合，克服了个体处理的局限性，如有限的穿透深度和不均匀的效果，使其成为一种有前途的方法，以保持食品质量和安全。方法按照PRISMA 2020指南进行系统文献综述。在2020年1月至2025年5月期间发表的同行评议研究文章从电子数据库中确定，包括Scopus， PubMed和ScienceDirect。本文选取超声和冷等离子体联合处理对食品脱水、微生物灭活、提取和蛋白质修饰的研究作为叙述综合。结果sacp的干燥时间减少了47%，微生物负荷减少了3倍以上。在机械上，超声波增强空化和传质，而冷等离子体产生氧化微生物细胞和修饰食物大分子的活性物质。挑战仍然存在于工业吞吐量的规模化技术，标准化处理方案，评估副产品安全性和长期产品稳定性。结论超声和冷等离子体的协同整合为食品加工提供了一种有前途的非热方法，具有高效、安全、保鲜的特点。未来的工作应优先考虑协议协调、实时过程控制、综合安全评估和经济可行性，以实现商业应用和可持续食品生产。

{"title":"Synergistic integration of sonication and cold plasma for intensified food processing: Mechanisms, applications, limitations, and future Prospects","authors":"Chirantan Sandip Saigaonkar , Sandhya R Shewale , Uday S Annapure","doi":"10.1016/j.cep.2025.110631","DOIUrl":"10.1016/j.cep.2025.110631","url":null,"abstract":"<div><h3>Background</h3><div>Advancements in food processing aim to preserve nutrient and bioactive integrity while enhancing microbiological safety without relying on thermal methods. Sonication-Assisted Cold Plasma (SACP) integrates mechanical ultrasound forces with reactive plasma chemistry to overcome limitations of individual treatments, such as limited penetration depth and uneven effects, making it a promising approach for preserving food quality and safety.</div></div><div><h3>Methods</h3><div>A systematic literature review was conducted following PRISMA 2020 guidelines. Peer-reviewed research articles published between January 2020 and May 2025 were identified from electronic databases, including Scopus, PubMed, and ScienceDirect. Studies evaluating combined ultrasound and cold plasma treatments on food dehydration, microbial inactivation, extraction, and protein modification were selected for narrative synthesis.</div></div><div><h3>Results</h3><div>SACP exhibited up to 47 % reduction in drying time, achieving over 3-log microbial load reductions. Mechanistically, ultrasound enhances cavitation and mass transfer, while cold plasma generates reactive species that oxidize microbial cells and modify food macromolecules. Challenges remain in scaling technology for industrial throughput, standardizing treatment protocols, and assessing byproduct safety and long-term product stability.</div></div><div><h3>Conclusions</h3><div>The synergistic integration of ultrasound and cold plasma presents a promising non-thermal approach for food processing with demonstrated efficiency, safety, and preservation of food quality. Future efforts should prioritize protocol harmonization, real-time process control, comprehensive safety evaluation, and economic feasibility to enable commercial adoption and sustainable food manufacturing.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"219 ","pages":"Article 110631"},"PeriodicalIF":3.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145568471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of oxidation of lyocell fiber under different bleaching conditions 不同漂白条件下莱赛尔纤维氧化性能的研究

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-01-01 Epub Date: 2025-11-12 DOI: 10.1016/j.cep.2025.110628

Parv Pandya , Payal Tyagi , Satesh Sutar , Archana Unnikrishnan

Lyocell fibre, a regenerated cellulosic material valued for its mechanical strength and sustainability, requires bleaching to enhance whiteness and dyeability. This study investigated the oxidative behaviour of Lyocell under sodium hypochlorite bleaching by systematically varying concentration (0.01–0.05%), duration (1–5 min), temperature (30–60°C), and pH (5–10). A full factorial experimental design (2⁴, 32 runs) with ANOVA analysis was applied with model significance confirmed at p < 0.05 (R² > 0.95) to evaluate both main and interaction effects. The key indicators—intrinsic viscosity, copper number, whiteness index, tensile properties, and crystallinity (XRD)—were measured to quantify fibre oxidation and performance.

Results showed that pH strongly governed oxidation behaviour through HOCl/OCl⁻ speciation. Near-neutral pH caused higher viscosity loss and aldehyde formation due to increased HOCl activity, whereas alkaline pH moderated degradation. Concentration and temperature had the most significant effects on viscosity loss (p < 0.05), confirming their dominant role. The optimum condition (0.03 % NaOCl, 2–3 min, 45°C, pH 8.5) achieved about 28 % whiteness improvement while retaining over 85 % of original strength. XRD analysis confirmed a slight rise in crystallinity from selective removal of amorphous cellulose.

This study is among the first to apply factorial design to Lyocell bleaching, establishing a low-damage, statistically validated bleaching window that enhances whiteness with minimal oxidation and supports sustainable industrial application.

莱赛尔纤维是一种再生纤维材料，因其机械强度和可持续性而受到重视，需要漂白以提高白度和可染性。本研究通过系统地改变次氯酸钠漂白的浓度（0.01-0.05%）、持续时间（1-5分钟）、温度（30-60°C）和pH（5-10）来研究Lyocell的氧化行为。采用全因子实验设计（2⁴，32个试验）和方差分析，p < 0.05 （R²> 0.95）证实模型显著性，以评估主效应和交互效应。关键指标-特征粘度，铜数，白度指数，拉伸性能和结晶度(XRD) -被测量来量化纤维的氧化和性能。结果表明pH值通过HOCl/OCl毒血症对氧化行为有很强的控制作用。由于HOCl活性的增加，接近中性的pH值导致更高的粘度损失和醛的形成，而碱性pH值则减缓了降解。浓度和温度对粘度损失的影响最显著（p < 0.05），证实了它们的主导作用。最佳条件（0.03% NaOCl, 2-3 min, 45°C, pH 8.5）可使白度提高约28%，同时保持85%以上的原始强度。XRD分析证实，选择性去除无定形纤维素后，结晶度略有上升。本研究是第一个将析因设计应用于Lyocell漂白的研究，建立了一个低损伤、统计验证的漂白窗口，以最小的氧化提高白度，并支持可持续的工业应用。

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引用次数: 0

Enhanced separation performance of waste catalyst particles: CFD-DEM optimization of the multilayer microchannel relative to the homogeneous microchannel 提高废催化剂颗粒的分离性能：多层微通道相对于均匀微通道的CFD-DEM优化

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-01-01 Epub Date: 2025-10-24 DOI: 10.1016/j.cep.2025.110603

Xiaoxiang Han , Dingliang Xu , Li Dai , Lin Zeng , Wenjie Lv , Hualin Wang

The separation performance of microchannel technology was investigated for multi-sized waste catalyst particles (100-190 μm) in petroleum refining processes. A coupled computational fluid dynamics and discrete element method approach was employed to compare multilayer and homogeneous microchannel structures, with optimization conducted for enhanced separation efficiency. Results demonstrated superior performance of the multilayer structure in separating smaller particles, achieving total separation efficiencies of 72.4 %, 74.4 %, 97.4 %, and 99.4 % for particles measuring 100 μm, 115 μm, 130 μm, and 145 μm in diameter respectively. These values exceeded those of homogeneous microchannels by 25 %, 22 %, 40 %, and 38 % respectively. The multilayer configuration exhibited high contaminant loading capacity through uniform particle retention across multiple levels, contrasting with the homogeneous structure's predominant particle accumulation (> 70 %) in initial stages that promoted surface filtration and necessitated frequent maintenance. Comparative analysis revealed the multilayer microchannel's dual advantages in energy efficiency and separation performance: At equivalent separation efficiency, it maintained a 1263 Pa pressure drop reduction compared to homogeneous systems; under similar pressure, separation efficiency increased by 40 %. This study provides the first comparison of multilayer and homogeneous microchannel separators for petroleum refining waste catalysts, proposing a strategy to improve efficiency and extend operation cycles, guiding industrial applications.

研究了微通道技术对石油炼制过程中不同粒径（100 ~ 190 μm）废催化剂颗粒的分离性能。采用计算流体力学和离散元耦合方法对多层微通道和均匀微通道结构进行了比较，并进行了优化，以提高分离效率。结果表明，对于直径为100 μm、115 μm、130 μm和145 μm的颗粒，多层结构的总分离效率分别为72.4%、74.4%、97.4%和99.4%。这些数值分别比均匀微通道高出25%、22%、40%和38%。多层结构通过均匀的颗粒滞留表现出高污染物负荷能力，与均匀结构在初始阶段的主要颗粒积聚（> 70%）形成对比，后者促进了表面过滤，需要经常维护。对比分析表明，多层微通道在能效和分离性能方面具有双重优势：在同等分离效率下，与均质系统相比，多层微通道的压降可降低1263 Pa；在相同压力下，分离效率提高40%。本研究首次对石油炼制废催化剂的多层微通道分离器和均匀微通道分离器进行了比较，提出了提高效率和延长运行周期的策略，指导工业应用。

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引用次数: 0

Total suspended solids as a simplified metric for predicting optimized dissolved oxygen in wastewater treatment: Comparing process-based and artificial neural network models 总悬浮固体作为预测废水处理中溶解氧优化的简化度量：比较基于过程的模型和人工神经网络模型

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-01-01 Epub Date: 2025-10-15 DOI: 10.1016/j.cep.2025.110599

Reshmi Das , Vishnudatha Venu , Lakshminarayana Rao

Freshwater scarcity is an escalating global issue, thus requiring effective solutions such as water reuse. However, achieving water reuse depends on efficient wastewater treatment, which is highly energy intensive. In a typical wastewater treatment plant (WWTP), aeration accounts for the majority of the energy consumption, which is generally not optimized according to the influent flow and water quality characteristics. This study investigates the potential of artificial neural networks (ANNs) to predict optimized dissolved oxygen (DO) levels in aeration tank for reducing energy consumption in a sewage treatment plant (STP). Using experimentally collected historical data from the already-optimized Chikkabanavara STP in Bangalore, two ANN models were developed and compared, one using mass flow rate of total suspended solids (TSS) as the sole input parameter, and another using a combination of mass flow rates of TSS, biochemical oxygen demand (BOD), and chemical oxygen demand (COD) as inputs. Both models exhibited similar predictive performance for DO with robust accuracy (Robust R² = 0.99, R² = 0.87). The predicted DO was proved to effectively treat the wastewater, and it was validated using a digital twin of STP by process-based BioWin simulations. The results highlight that using TSS as a proxy for COD and BOD not only simplifies monitoring but also enhances process control, ensuring efficient operation and compliance with discharge standards.

淡水短缺是一个日益严重的全球问题，因此需要有效的解决办法，例如水的再利用。然而，实现水的回用取决于高效的废水处理，这是高度能源密集型的。在典型的污水处理厂（WWTP）中，曝气占能耗的大部分，通常没有根据进水流量和水质特性进行优化。本研究探讨了人工神经网络（ann）预测曝气池中溶解氧（DO）水平以降低污水处理厂能耗的潜力。利用实验收集的班加罗尔Chikkabanavara STP的历史数据，建立了两种人工神经网络模型，并进行了比较，其中一种模型以总悬浮固体质量流量（TSS）为唯一输入参数，另一种模型以总悬浮固体质量流量、生化需氧量（BOD）和化学需氧量（COD）为输入参数。两种模型对DO的预测性能相似，具有鲁棒精度（鲁棒R²= 0.99,R²= 0.87）。预测的DO被证明可以有效地处理废水，并通过基于过程的BioWin模拟使用STP的数字孪生进行了验证。结果表明，利用TSS代替COD和BOD不仅简化了监测，而且加强了过程控制，确保了高效运行和符合排放标准。

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引用次数: 0

Photocatalytic degradation performance in a spinning disk reactor towards mixed dye contaminants 旋转盘反应器对混合染料污染物的光催化降解性能

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-01-01 Epub Date: 2025-10-25 DOI: 10.1016/j.cep.2025.110606

Zhi-Hao Li , Zi-Qi Wang , Yan-Bin Li , Bao-Chang Sun , Guang-Wen Chu , Jian-Feng Chen

Photodegradation technology has emerged as an efficient methodology for wastewater treatment. In this study, the photochemical application performance of the innovative spinning disk reactor (SDR) with elliptical cylinder spoilers was investigated via the TiO₂-assisted photodegradation of synthetic dyeing wastewater containing a binary mixture of typical azo dyes (Methylene Blue and Rhodamine B). The SDR generates a highly sheared film when liquid enters from the center of the disk. The photodegradation results proved that SDR with spoilers had higher photodegradation efficiency than that of the SDR with a flat disk. The overall removal efficiency could reach 80% in 25 minutes at optimal operating conditions. The overall removal efficiency and electrical energy per order of mixed dye wastewater for SDR with spoilers was 11.3% higher and 15.1% lower averagely than those of the conventional SDR with a flat disk, respectively. Compared with other photoreactors, the electrical energy per order was reduced for the SDR with spoilers. Furthermore, based on our reported SDR model for photodegradation reactions, the overall removal efficiency of dyeing wastewater could be reasonably predicted with deviations of ±20%. The photodegradation of mixed dye contaminants demonstrated the applicability of SDR with spoilers to real textile wastewater treatment.

光降解技术已成为一种有效的废水处理方法。本研究通过tio2辅助光降解含典型偶氮染料（亚甲基蓝和罗丹明B）二元混合物的合成印染废水，研究了新型椭圆圆柱扰流器旋转盘反应器（SDR）的光化学应用性能。当液体从圆盘中心进入时，SDR会产生一个高度剪切的膜。光降解结果表明，带扰流片的SDR比带平盘的SDR具有更高的光降解效率。在最佳操作条件下，25分钟内总去除率可达80%。采用扰流器的特别提款权对混合染料废水的总体去除率和每阶电能平均比采用平板圆盘的常规特别提款权提高11.3%，平均降低15.1%。与其他光反应器相比，带有扰流片的SDR每阶电能有所降低。此外，基于我们报道的光降解反应的SDR模型，可以合理地预测印染废水的总体去除率，偏差为±20%。混合染料污染物的光降解实验证明了带有扰流器的SDR在实际纺织废水处理中的适用性。

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引用次数: 0

Numerical evaluation of operating conditions in an array micromix combustor: Effects of hydrogen enrichment and inlet bulk velocity on flame stability 阵列微混合燃烧室运行条件的数值评价：富氢和进口体速对火焰稳定性的影响

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-01-01 Epub Date: 2025-10-30 DOI: 10.1016/j.cep.2025.110608

Maoqi Lu , Tao Zhang , Xianqi Zhu , Rongtang Liu , Yong He , Kaidi Wan , Xinlu Han

The advancement of array micromix combustion technology supports hydrogen (H₂)-enriched fuel utilization, essential for reducing fossil fuel consumption and achieving carbon neutrality. However, comprehensive guidelines for safe operation across a wide range of parameters still need to be established. In this paper, numerical calculations are conducted to reveal the effects of H₂ enrichment and inlet velocity on flame behavior and combustion stability in an array micromix combustor. The results demonstrate that the combustor provides flexible combustion performance even under near-stoichiometric conditions, efficiently utilizing a wide range of fuels, including pure methane (CH₄) and pure H₂. Moreover, adjusting the equivalence ratio allows for low-emission performance. Blow-out of the H₂-enriched array flame starts at the outermost nozzle, and this behavior occurs under all inlet velocity conditions from 20 to 120 m/s. Based on this foundation, stability maps are constructed to illustrate the interdependence between the H₂ blending ratio and equivalence ratio, as well as the relationship between inlet velocity and equivalence ratio. The results indicate that higher H₂ enrichment expands the blow-out limit range. Two inflection points emerge in the blow-out limit curve during the transition from CH₄ to H₂. Additionally, increasing inlet velocity shifts the blow-out limit to higher equivalence ratios. However, this trend weakens as H₂ enrichment exceeds 80 %. A dimensionless Peclet model incorporating Reynolds number correction is proposed to predict flame blow-out limit curves, which offers assistance in design optimization for H₂-enriched fuel operating conditions to ensure the stability of array micromix combustors.

阵列微混合燃烧技术的进步支持氢（H2）富集燃料的利用，这对于减少化石燃料消耗和实现碳中和至关重要。然而，仍然需要建立广泛参数范围内的安全操作综合指南。本文通过数值计算揭示了H2富集和进口速度对阵列微混合燃烧室火焰行为和燃烧稳定性的影响。结果表明，即使在接近化学计量的条件下，燃烧器也能提供灵活的燃烧性能，有效地利用各种燃料，包括纯甲烷（CH4）和纯氢气。此外，调整等效比可以实现低排放性能。富h2阵列火焰的熄灭始于最外层的喷嘴，这种行为在20 ~ 120m /s的所有进口速度条件下都发生。在此基础上，构建了稳定性图，说明了混合H2比与当量比的相互关系，以及进口速度与当量比的关系。结果表明，H2富集程度越高，吹出极限范围越大。在CH4向H2的过渡过程中，井喷极限曲线出现了两个拐点。此外，增加进口速度会使喷流极限转向更高的等效比。然而，当H2富集超过80%时，这种趋势减弱。提出了一种考虑雷诺数校正的无量纲Peclet模型来预测火焰爆灭极限曲线，为富h2燃料工况优化设计提供了依据，保证了阵列微混合燃烧室的稳定性。

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