Current Opinion in Chemical Engineering最新文献

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Editorial overview: Transforming water technologies in the United States: Insights from the National Alliance for Water Innovation 社论概述：美国水技术转型：来自全国水创新联盟的见解

IF 6.8 2区工程技术 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Current Opinion in Chemical Engineering

Pub Date : 2025-09-15 DOI: 10.1016/j.coche.2025.101180

Jeffrey R. McCutcheon , Meagan Mauter

引用次数: 0

Photocatalytic slurry reactor for hydrogen production via water splitting 水裂解制氢光催化浆体反应器

IF 6.8 2区工程技术 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Current Opinion in Chemical Engineering

Pub Date : 2025-09-09 DOI: 10.1016/j.coche.2025.101179

Hugo de Lasa, Angelo Escudero Romero

This article reviews the performance of a photocatalytic Photo-CREC Water-II unit powered by near-UV, or alternatively by visible light, for hydrogen production via water splitting. The radiation equation and its solution are established via a Monte Carlo (MC) method, with simulations being validated experimentally with macroscopic radiation balances. A mesoporous anatase matrix with added palladium photocatalyst with good fluidizability properties is synthesized. The photocatalyst performance is evaluated using QYs (quantum yields) and PTEFs (photocatalytic thermodynamic efficiency factors). It is shown that the TiO₂–noble metal photocatalyst displays, in Photo-CREC Water-II using near-UV and ethanol as a scavenger, QYs and PTEFs of 0.35 and 0.247, respectively. The reported results pave the way for establishing the irradiation, the photocatalyst loading, the ethanol scavenger concentration, and the pH operating conditions required in an upscaled slurry Photo-CREC Water-II reactor, for producing commercially significant amounts of H₂.

本文综述了光催化photocrec water - ii装置的性能，该装置由近紫外或可见光驱动，通过水裂解制氢。利用蒙特卡罗方法建立了辐射方程及其解，并用宏观辐射天平进行了模拟实验验证。合成了一种具有良好流化性能的介孔锐钛矿基质。用QYs（量子产率）和PTEFs（光催化热力学效率因子）来评价光催化剂的性能。结果表明，在近紫外和乙醇作为清除剂的photocrec Water-II中，tio2 -贵金属光催化剂的QYs和PTEFs分别为0.35和0.247。报道的结果为在升级后的浆状photocrec Water-II反应器中建立所需的辐照、光催化剂负载、乙醇清除剂浓度和pH操作条件铺平了道路，以生产商业上大量的H2。

引用次数: 0

Emerging nonthermal technologies for food safety: trends, limitations, and future research 新兴的食品安全非热技术：趋势、限制和未来研究

IF 6.8 2区工程技术 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Current Opinion in Chemical Engineering

Pub Date : 2025-09-01 DOI: 10.1016/j.coche.2025.101178

Adrian Yaya-González , Jessica Laika , Yeimmy Peralta-Ruiz

Food safety has become a critical global concern. The primary causes of food deterioration and subsequent loss include spoilage by harmful microorganisms and toxic substances that threaten human health. Emerging nonthermal technologies have been developed as alternatives to mitigate or eliminate these losses. These methods include pulsed electric fields, cold plasma, high-pressure processing, ultrasound technology, and photodynamic inactivation. This review summarizes the principles governing each technology and its effects on key food parameters. Additionally, it explores the critical factors influencing the scalability of these technologies and their applicability to various food matrices. Finally, a brief discussion addresses the main limitations and challenges from an engineering perspective, including efficiency, economic constraints, energy consumption, and regulatory compliance barriers.

食品安全已成为全球关注的重要问题。食品变质和随后损失的主要原因包括威胁人类健康的有害微生物和有毒物质的变质。新兴的非热技术已经被开发出来，作为减轻或消除这些损失的替代方案。这些方法包括脉冲电场、冷等离子体、高压处理、超声波技术和光动力失活。本文综述了每种技术的原理及其对关键食品参数的影响。此外，它还探讨了影响这些技术的可扩展性及其对各种食品基质的适用性的关键因素。最后，简要讨论了从工程角度出发的主要限制和挑战，包括效率、经济约束、能源消耗和法规遵从障碍。

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Role of cathode materials and their advancement for sustainable hydrogen evolution reaction in microbial electrolysis cells 正极材料在微生物电解池持续析氢反应中的作用及其进展

IF 6.8 2区工程技术 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Current Opinion in Chemical Engineering

Pub Date : 2025-08-25 DOI: 10.1016/j.coche.2025.101176

Sneha Prakash Naik , Omprakash Sarkar , Velvizhi Gokuladoss , Leonidas Matsakas , Gunda Mohanakrishna

Microbial electrolysis cells (MECs) offers a sustainable route for hydrogen production by decarbonizing global energy demands via transformation of biogenic waste/wastewater. Leveraging microbial metabolism, MECs contribute to the waste-to-energy nexus. The efficiency of MECs is significantly influenced by selection of electrode materials such as platinum, nickel, and stainless steel, which enhance the performance through their high surface area, chemical resilience, and effective hydrogen evolution reaction. MECs have been shown to generate 853 H₂/m³/d using graphite brush (anode) and Pt-loaded carbon cloth (cathode). MECs were upgraded to 1000 l, having 24 modules with 144 electrode pairs. Key features of cathode materials and its advancements used in MECs are discussed in this review.

微生物电解电池（MECs）通过转化生物废物/废水来脱碳全球能源需求，为制氢提供了一条可持续的途径。利用微生物代谢，mec有助于废物转化为能源。电极材料的选择对mec的效率有显著影响，如铂、镍和不锈钢，这些电极材料通过其高表面积、化学回弹性和有效的析氢反应来提高性能。使用石墨刷（阳极）和负载pt的碳布（阴极），mec可以产生853 H2/m³/d。mec升级到1000 l，有24个模块，144个电极对。本文综述了阴极材料的主要特点及其在mec中的应用进展。

引用次数: 0

Hydrogen production by photocatalytic dehydrogenation of formic acid 甲酸光催化脱氢制氢

IF 6.8 2区工程技术 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Current Opinion in Chemical Engineering

Pub Date : 2025-08-21 DOI: 10.1016/j.coche.2025.101175

Laura Valenzuela , Zahraa Abou Khalil , Agnieszka M. Ruppert , Marco Daturi , Mohammad El-Roz , Nicolas Keller

This mini-review updates the most significant recent advances in the promising field of hydrogen production via photocatalytic dehydrogenation of formic acid. The focus is on utilizing formic acid both as a liquid organic hydrogen carrier and as an effective internal hydrogen source for driving hydrogenation reactions. We present a subjective overview of key developments from the past 3 years in both aqueous- and gas-phase reactions, as well as in the rapidly evolving field of dual-mode photonic/thermal catalysis. Particular attention is given to insights into reaction mechanisms through operando FTIR studies, which allow for the direct observation of surface intermediates and the elucidation of possible reaction pathways.

本文简要介绍了甲酸光催化脱氢制氢的最新进展。重点是利用甲酸既作为液态有机氢载体，又作为驱动氢化反应的有效内部氢源。我们对过去三年来在水相和气相反应以及快速发展的双模光子/热催化领域的关键发展进行了主观概述。特别注意的是，通过operando FTIR研究，可以直接观察表面中间体和阐明可能的反应途径，从而深入了解反应机制。

引用次数: 0

Reduction in solvent and chemical use for membrane manufacturing using electrospray 减少溶剂和化学品使用的膜制造使用电喷雾

IF 6.8 2区工程技术 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Current Opinion in Chemical Engineering

Pub Date : 2025-08-20 DOI: 10.1016/j.coche.2025.101173

Salman Ahmadipouya , Usama J Sheikh , Noah Ferguson , Mert C Hacifazlioglu , Deniz Ipekci , Jeffrey R McCutcheon

Electrospray (ES) has recently emerged as a new technique for synthesizing and potentially manufacturing membranes at scale. While touted for its ability to make membranes from a variety of materials, the process also requires little solvent and polymer material. This study highlights the advantages of ES over conventional solution processing methods (at the lab scale) in reducing solvent and chemical consumption. When compared to conventional processes, ES laboratory scale fabrication of liquid and gas separations membranes yielded reductions in solvent and polymer material use on a per-area basis by anywhere from 50 to more than 90%.

电喷雾（ES）是近年来出现的一种合成和大规模生产膜的新技术。虽然这种方法可以用多种材料制造膜，但它只需要很少的溶剂和聚合物材料。这项研究强调了ES在减少溶剂和化学品消耗方面比传统溶液处理方法（在实验室规模上）的优势。与传统工艺相比，ES实验室规模制造的液体和气体分离膜在每个区域的溶剂和聚合物材料使用量减少了50%到90%以上。

引用次数: 0

Recent advances, challenges and perspectives on rotating packed bed technology in solvent-based post-combustion carbon capture 溶剂基燃烧后碳捕集旋转填料床技术的最新进展、挑战和展望

IF 6.8 2区工程技术 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Current Opinion in Chemical Engineering

Pub Date : 2025-08-20 DOI: 10.1016/j.coche.2025.101174

Toluleke E Akinola , Olajide Otitoju , Eni Oko , Meihong Wang

Rotating packed beds are emerging as a promising alternative to conventional packed beds in solvent-based carbon capture, owing to their high mass transfer rates and compact design. This paper discusses recent advances, challenges and future perspectives associated with RPB technology. Key issues include solvent stability and degradation, corrosion challenges, scaling up for industrial applications and other operational and maintenance hurdles. Future research should focus on developing novel solvents, optimising RPB design, creating high-fidelity models using hybrid approaches, and establishing robust and rigorous procedures for scaling up. Additionally, accurate techno-economic evaluations and exploring decentralised RPB deployment could enhance its commercialisation, making this technology viable for a broader range of industries.

旋转填料床由于其高传质率和紧凑的设计，正在成为溶剂基碳捕获中传统填料床的有前途的替代品。本文讨论了RPB技术的最新进展、挑战和未来展望。关键问题包括溶剂稳定性和降解、腐蚀挑战、工业应用规模扩大以及其他操作和维护障碍。未来的研究应该集中在开发新的溶剂，优化RPB设计，使用混合方法创建高保真模型，以及建立稳健和严格的扩展程序。此外，准确的技术经济评估和探索分散的RPB部署可以增强其商业化，使该技术在更广泛的行业中可行。

引用次数: 0

A perspective on enhancing chemical alternative assessments by prioritizing conditions of use 通过确定使用条件的优先次序来加强化学品替代评估的观点

IF 6.8 2区工程技术 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Current Opinion in Chemical Engineering

Pub Date : 2025-08-19 DOI: 10.1016/j.coche.2025.101177

John D Chea, Michael A Gonzalez

Alternative assessment (AA) for chemical substitution has traditionally been motivated by reducing hazards while minimizing exposure to toxic substances. However, this approach of AA can prematurely eliminate many potential candidate chemicals before considering their technical performance and role. This perspective paper proposes a paradigm shift to prioritize the primary functional requirements of a chemical's given application before adopting the safer and more economical alternative from a life cycle perspective, including raw material extraction and refinement, chemical synthesis, product manufacturing, conditions of use (CoU), and end-of-life management. The adoption of this approach is represented as a mixed-integer nonlinear programming problem, aiming to minimize the differences in the properties of the chemical of interest and the targeted value for a CoU, while considering safety, regulatory limits, and economic feasibility as constraints. If successfully implemented, practical replacements within the acceptable safety parameters set forth by regulatory and nonregulatory entities can be determined to address chemical substitution challenges.

化学替代的替代评估（AA）传统上的动机是减少危害，同时尽量减少接触有毒物质。然而，这种AA方法可能会在考虑其技术性能和作用之前过早地排除许多潜在的候选化学品。这篇前瞻性的论文提出了一种范式转变，从生命周期的角度出发，在采用更安全、更经济的替代方案之前，优先考虑化学品给定应用的主要功能需求，包括原材料提取和精炼、化学合成、产品制造、使用条件（CoU）和生命周期结束管理。采用这种方法被表示为一个混合整数非线性规划问题，旨在将感兴趣的化学物质的性质与CoU的目标值之间的差异最小化，同时考虑安全性、监管限制和经济可行性作为约束。如果成功实施，可以确定在监管和非监管实体规定的可接受安全参数范围内的实际替代品，以解决化学替代品的挑战。

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引用次数: 0

Recent advancements in CO2 capture and storage using carbide slag waste: a review of technological and chemical innovations 利用电石渣废物捕获和储存二氧化碳的最新进展：技术和化学创新的回顾

IF 6.8 2区工程技术 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Current Opinion in Chemical Engineering

Pub Date : 2025-08-12 DOI: 10.1016/j.coche.2025.101169

Manisha Sukhraj Kothari, Ashraf Aly Hassan, Amr El-Dieb, Hilal El-Hassan

The rapid industrial waste generation has heightened the environmental strain associated with its disposal. Carbide slag waste, a byproduct of acetylene gas production, is primarily composed of calcium hydroxide and poses significant environmental challenges due to its high volume and alkalinity. This review explores the valorization of carbide slag waste for CO₂ capture and storage, particularly via its applications in cyclic CO₂ capture and mineral carbonation. Scientific advancements in cyclic CO₂ capture capacity and stability with antisintering strategies and pelletization for industrial applications are highlighted. Furthermore, through a detailed analysis of various mineral carbonation studies, new technological and chemical innovations that enhance carbonation efficiency, reduce energy costs, improve reaction kinetics, and enable the production of high-value materials are summarized. Concisely, even though the utilization of carbide slag waste for CO₂ capture and conversion offers a sustainable pathway, it needs to be studied at a larger scale to evaluate its feasibility and associated challenges.

工业废物的迅速产生加剧了与其处置有关的环境压力。电石渣废物是乙炔气生产的副产品，主要由氢氧化钙组成，由于其体积大和碱度，对环境构成了重大挑战。本文综述了电石渣在CO2捕集与封存中的应用，重点介绍了电石渣在循环CO2捕集和矿物碳化中的应用。在循环二氧化碳捕获能力和稳定性与反烧结策略和球团工业应用的科学进展突出。此外，通过对各种矿物碳酸化研究的详细分析，总结了提高碳酸化效率、降低能源成本、改善反应动力学和生产高价值材料的新技术和化学创新。简而言之，尽管利用电石渣废物进行二氧化碳捕获和转化提供了一个可持续的途径，但需要在更大的范围内进行研究，以评估其可行性和相关挑战。

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引用次数: 0

Photocatalytic generation of hydrogen from a non-carbon source, ammonia in aqueous solutions 光催化从非碳源生成氢，水溶液中的氨

IF 6.8 2区工程技术 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Current Opinion in Chemical Engineering

Pub Date : 2025-08-06 DOI: 10.1016/j.coche.2025.101167

Laura Clarizia , Abdulaziz Al-Anazi , Changseok Han

This review investigates hydrogen production via photocatalysis using ammonia, a carbon-free source potentially present in wastewater. Photocatalysis offers low energy requirements and high conversion efficiency compared to electrocatalysis, thermocatalysis, and plasma catalysis. However, challenges such as complex material synthesis, low stability, spectral inefficiency, high costs, and integration barriers hinder industrial scalability. The review addresses thermodynamic requirements, reaction mechanisms, and the role of pH in optimizing photocatalysis. By leveraging ammonia’s potential and advancing photocatalyst development, this study provides a framework for scalable, sustainable hydrogen production and simultaneous ammonia decomposition, paving the way for innovative energy solutions and wastewater management.

本文综述了利用废水中可能存在的无碳源氨进行光催化制氢的研究。与电催化、热催化和等离子体催化相比，光催化的能量需求低，转化效率高。然而，复杂的材料合成、低稳定性、光谱效率低下、高成本和集成障碍等挑战阻碍了工业可扩展性。本文综述了热力学要求、反应机理以及pH在优化光催化中的作用。通过利用氨的潜力和推进光催化剂的发展，本研究提供了一个可扩展的、可持续的制氢和同步氨分解的框架，为创新的能源解决方案和废水管理铺平了道路。

引用次数: 0

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