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Chem and Bio engineering 2025年第4期2卷 210-228页

作者： Edaugal, Justin P. Zhang, Difan Liu, Dupeng Glezakou, Vassiliki-Alexandra Sun, Ning Advanced Biofuels and Bioproducts Process Development Unit Biological Systems and Engineering Division Lawrence Berkeley National Laboratory EmeryvilleCA94608 United States Physical and Computational Sciences Directorate Pacific Northwest National Laboratory RichlandWA99354 United States Chemical Sciences Division Oak Ridge National Laboratory Oak RidgeTN37830 United States

As the chemical industry shifts toward sustainable practices, there is a growing initiative to replace conventional fossil-derived solvents with environmentally friendly alternatives such as ionic liquids (ILs) and deep eutectic solvents (DESs). Artificial intelligence (AI) plays a key role in the discovery and design of novel solvents and the development of green processes. This review explores the latest advancements in AI-assisted solvent screening with a specific focus on machine learning (ML) models for physicochemical property prediction and separation process design. Additionally, this paper highlights recent progress in the development of automated high-throughput (HT) platforms for solvent screening. Finally, this paper discusses the challenges and prospects of ML-driven HT strategies for green solvent design and optimization. To this end, this review provides key insights to advance solvent screening strategies for future chemical and separation processes. © 2025 The Authors. Co-published by Zhejiang University and American Chemical Society.

关键词： Chemical industry

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REMOVAL OF RADIOCESIUM FROM SIMULATED ALKALINE SALT-LOADED RADWASTE SOLUTION USING POTASSIUM COBALT(II) HEXACYANOFERRATE(II)

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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-LETTERS 1995年第3期199卷 183-190页

作者： SAMANTA, SK THOMAS, MK THEYYUNNI, TK Process Engineering and Systems Development Division Bhabna Atomic Research Centre Bombay India

The inorganic sorbent potassium cobalt(II) hexacyanoferrate(II) was tested for removal of radiocesium from alkaline salt solutions that are typical of intermediate level radioactive wastes generated at spent fuel repr... 详细信息

关键词： Nuclear fuel reprocessing

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Ion exchange with silica-titania gels

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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES 1996年第2期207卷 303-312页

作者： Ramaswamy, M Process Engineering and Systems Development Division Bhabha Atomic Research Centre Bombay (India)

Silica-titania gels containing 25, 50 and 75 mol% TiO2 were prepared and the sorption of alkali and alkaline earth metal ions by these materials has been studied. Distribution coefficient values for Cs+ and Sr2+ ions were found to pass through broad maxima as a function of TiO2 content except in the case of Sr under alkaline conditions where there was a continuous increase. Capacity values also increased with TiO, content and samples containing 50% (for K+ and Cs+), 75% (for Li+ and Na+) and 25%/50% (for Ca2+ Sr2+ and Ba2+) TiO2 exhibited maximum capacities. However, unlike with alkali metals, capacities of a given sorbent for the three alkaline earth ions were almost the same. Large capacities obtained for die latter ions seem to indicate a mineral-forming reaction with 25% and 50% materials. On the other hand, the 25% TiO2 gel seems to sorb Sr at trace level by an ion exchange mechanism. Coupled with its Cs sorption capability, this material may find potential use in large scale decontamination of low level waste solutions.

关键词： Titanium dioxide

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Sorption of radioactive strontium on a silica-titania mixed hydrous oxide gel

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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 1997年第1期220卷 55-58页

作者： Venkatesan, KA Sasidharan, NS Wattal, PK Process Engineering and Systems Development Division Bhabha Atomic Research Centre Mumbai India

A silica-titania (Si-Ti) mixed hydroxide gel with Ti to Si mole ratio of 1 : 1 was prepared Studies on the sorption of radiostrontium from alkaline solutions having various concentrations of sodium were carried out with Si-Ti. The distribution coefficient (K-d) of strontium decreased with increasing concentrations of sodium from 0.1 to 4.0 ***(-3). The plot of log K-d versus log [Na+] gave a slope of -0.55 as against the theoretical value of -2.0. This suggests that some other paths in addition to the simple stoichiometric ion exchange is also existing for sorption. From pH titrations the pH(pzc) of Si-Ti was found to be 4.22 coinciding nearly with the pH sorption edge. An attempt was made to correlate the sorption results with the surface characteristics of the sort,ent. It was found that sorption is favored when the surface of the sorbent transforms into an anionic form. Sharp increase in the sorption of strontium was observed when the equilibrium pH was between 7 and 10. This behavior could be attributed to the abrupt increase in net negative charge on the surface of the sorbent.

关键词： Sorption

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Hydrated titanium(IV) oxide as a granular inorganic sorbent for removal of radiostrontium .2. Column experiment using simulated reprocessing plant waste

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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES 1996年第1期209卷 243-247页

作者： Samanta, SK Process Engineering and Systems Development Division Bhabha Atomic Research Centre Bombay (India)

The potential of hydrated titanium(IV) oxide as a granular inorganic sorbent fur radiostrontium was studied by carrying out laboratory-scale column experiment. The feed to the column was a simulated waste solution of reprocessing plant origin. The breakthrough curve for removal of radiostrontium was determined. High decontamination factors were obtained for thousands of bed volumes. ?he column loading results were correlated with batch distribution data.

关键词： Hydration

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Unveiling Feedstock Variability: Insights into Corn Stover Conversion - Part I: Physicochemical Properties and Self-Degradation

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ACS Sustainable Chemistry and engineering 2025年第20期13卷 7406-7417页

作者： Kang, Xihui Dou, Chang Sale, Kenneth L. Ding, Ling Zeng, Yining Goliman, Kennedy A. Donohoe, Bryon S. Sun, Ning Advanced Biofuels and Bioproducts Process Development Unit Biological Systems and Engineering Division Lawrence Berkeley National Laboratory Emeryville 94608 CA United States Deconstruction Division Joint BioEnergy Institute 5885 Hollis Street Emeryville 94608 CA United States Department of Biosecurity and Bioassurance Sandia National Laboratories 7011 East Avenue Livermore 94551 CA United States Energy and Environment Science & Technology Idaho National Laboratory 1955 N Fremont Ave Idaho Falls 83415 ID United States Renewable Resources and Enabling Sciences Center National Renewable Energy Laboratory Golden 80401 CO United States College of Computing Data Science and Society University of California Berkeley 94720 CA United States Biosciences Center National Renewable Energy Laboratory Golden 80401 CO United States

Transforming agricultural waste into biofuels and bioproducts is crucial to advancing a low-carbon bioeconomy. However, the inherent variability in the composition and quality introduces uncertainties in the conversion efficiency and poses challenges in process development. Through integrating a high-throughput conversion system, material characterization techniques, and advanced data analysis tools, this study investigates the variability of corn stover and its subsequent impacts on carbohydrate conversion. The findings reveal that indoor storage substantially reduces the moisture and ash content and soil contamination, while other properties remain largely unchanged. Self-degradation due to microbial activity during storage decreases the carbohydrate content of corn stover but enhances glucose and xylose yields. A negative correlation is observed between sugar yields and lignin content across samples with varying ash and moisture content. The inhibitory effect of lignin diminishes in self-degraded samples likely due to the disrupted cell wall structure. Although self-degradation slightly increases cellulose crystallinity, no strong correlation was observed between the crystallinity and sugar yield. Hot water pretreatment under mild conditions effectively mitigates inherent variability, consistently improving the sugar yield from corn stover by up to 50%. By elucidating the feedstock variability and its impact on convertibility, these findings offer valuable insights into appropriate feedstock handling and management, highlighting potential strategies to address variability challenges. © 2025 American Chemical Society.

关键词： corn stover enzymatic hydrolysis feedstock characterization pretreatment self-heating

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Distillable Amine-Based Solvents for Effective Pretreatment of Multiple Biomass Feedstocks

SSRN

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SSRN 2025年

作者： Simmons, Blake A. Chen, Xueli Krishnamoorthy, Anagha Palasz, Joseph Pidatala, Venkataramana R. Lewis, Tyrell Tian, Yang Barcelos, Carolina Zhou, Xinyi Kang, Xihui Dou, Chang Choudhary, Hemant Sun, Ning Sundstrom, Eric Eudes, Aymerick Biological Systems and Engineering Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Advanced Biofuels and Bioproducts Process Development Unit Lawrence Berkeley National Laboratory EmeryvilleCA94608 United States Environmental Genomics and Systems Biology Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Department of Bioresource and Environmental Security Sandia National Laboratories LivermoreCA94551 United States Joint BioEnergy Institute EmeryvilleCA94608 United States

Exploring the potential of advanced distillable solvents as efficient biomass pretreatment agents is critical for biorefineries, enhancing fermentable sugar yields while enabling solvent recovery and recycling without suffering significant losses. Here, we employ distillable amine-based solvents for pretreating a wide range of lignocellulosic feedstocks, aiming to facilitate the industrial release of fermentable sugars from diverse feedstocks through enzymatic hydrolysis. Twenty-two diverse feedstocks, sourced from different geographical regions and representing various biomass categories, were surveyed for chemical (mainly carbohydrates and lignin) and lignin (S, G, H units) profiles. Several solvents including ethanolamine, ethanolamine acetate, butylamine, butylamine acetate, and triethylamine, were tested for the pretreatment of eight selected biomasses. Among these solvents, butylamine emerged as the most effective due to its favorable sugar release, excellent solvent removal rate, and low boiling point, facilitating solvent recovery and recycling. Extending butylamine pretreatment to all 22 feedstocks demonstrated desirable sugar yields and highly efficient solvent removal in the majority of the biomass sources tested. Agricultural residues and their mixtures showed particularly favorable results. Scale-up experiments of the mixed agricultural feedstocks in a 1 L Parr reactor achieved over 90% glucose liberation and more than 99% butylamine removal, highlighting the method's scalability. The resulting hydrolysates supported growth of diverse bacterial and fungal strains, indicating downstream compatibility with commercial fermentation processes. This study presents butylamine as an effective, recoverable pretreatment solvent for a wide range of lignocellulosic feedstocks, offering a promising solution to key biorefinery challenges. The demonstrated scalability and compatibility with various biomass types and blends underscore its potential for industrial appli

关键词： Bioconversion

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Cesium sorption behavior of a mordenite type synthetic zeolite and its modified form obtained by acid treatment

Cesium sorption behavior of a mordenite type synthetic zeoli...

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作者： Samanta, S.K. Process Engineering and Systems Development Division Bhabha Atomic Research Centre Trombay Mumbai 400 085 India

A locally produced mordenite type synthetic zeolite and its modified form obtained by the treatment with dilute hydrochloric acid were tested for their cesium uptake characteristics. The two zeolites were compared with other commercially available synthetic zeolites with respect to their ability to sorb radiocesium from dilute nitric acid solution. The effects of the changes in the composition of the solution including the concentration of nitric acid, sodium and cesium on the uptake of cesium were investigated. The results can be used in the removing processor radiocesium from different types of nuclear plant effluents by these zeolites.

关键词： Zeolites

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Comparative Study on EDM Wire Cutting and CO2Laser Cutting for High-Precision Stainless Steel Sheet processing

Engineering Reports

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engineering Reports 2025年第5期7卷

作者： A. Parthiban K. Ananthakumar S. Ajith Arul Daniel S. Sivaganesan T. Sathish Jayant Giri A. Johnson Santhosh Ahmad O. Hourani Department of Mechanical Engineering Vels Institute of Science Technology & Advanced Studies Chennai Tamil Nadu India -Metallurgist Process Engineering Department Motherson Health and Medical Systems Kanchipuram Tamil Nadu India Department of Mechanical Engineering Saveetha School of Engineering SIMATS Chennai Tamil Nadu India Department of Mechanical Engineering Yeshwantrao Chavan College of Engineering Nagpur India Division of Research and Development Lovely Professional University Phagwara India Associate Professor Faculty of Mechanical Engineering Jimma Institute of Technology Jimma University Jimma Ethiopia Hourani Center for Applied Scientific Research Al-Ahliyya Amman University Amman Jordan

CO 2 laser cutting and electrical discharge machining (EDM) wire cutting are two advanced thermal energy-based methods widely utilized for precision profile cutting tasks. This study conducts a comprehensive experimental analysis of these techniques, focusing on their performance when cutting stainless steel grades AISI 316L and 304. The research evaluates key process parameters influencing the cut quality, aiming to achieve minimal surface roughness. Additionally, the surface morphologies resulting from both methods are thoroughly examined. By analyzing the cutting performance and tracking the outcomes for both techniques, the study identifies the most efficient cutting technology for these materials. Using a multi-objective optimization approach based on Genetic Algorithms, the study demonstrates a significant enhancement in surface roughness. The percentages of deviations for AISI 316 Stainless steel for 1.5, 2, and 2.5 mm thickness for CO 2 laser cut and EDM wire cut surfaces are 24.8%, 21.59%, and 35.61%, respectively, and also that The percentages of deviations for AISI 304 Stainless steel for 1.5, 2, and 2.5 mm thickness for CO 2 laser cut and EDM wire cut surfaces are 36.86%, 27.88%, and 22.96%, respectively. The optimized process achieves a superior surface roughness of cutting quality. These findings offer valuable insights into selecting the appropriate cutting method and parameters for achieving high-precision results in industrial applications.

关键词： AISI 304 and surface roughness AISI 316L CO2 laser cutting EDM wire cut

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Residual Stress Analysis of A Multi-Layer Thin Film Structure by Destructive (Curvature) and Non-Destructive (X-Ray) Methods

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MRS Online Proceedings Library 2011年第1期153卷 363-368页

作者： P. C. Chen Yoshiki Oshida Systems Technology Division Metallization Process Development IBM Co. Endicott USA Dept. of Mechanical and Aerospace Engineering Syracuse University Syracuse USA

Multi-layer thin film which has structure of Cu/Cr/K/Cr/Cu prepared by sputtering process was analyzed for interfacial stresses for as-deposited conditions. This structure was also annealed at 150°C, 250°C, and 350°C for around 15 min. in a vacuum and cooled slowly down for stress analyses. Equations derived by Osgood [1] for residual stress estimations for homogeneous material system using layer removal technique (stress relief) is now applied for inhomogeneous system (multilayer structure). The results are compared with the data obtained from x-ray diffraction technique by using sin2Ψ-2θ method, for Cu layer. From the present analyses, the data obatined using layer removal seem to be qualitatively consistent with but not quantitatively in agreement with x-ray method. Data obtained using the layer removal method have some overlaps with those obtained from x-ray technique. However, in details, data from the curvature method present different scattering band from the x-ray method. It is suggested that the layer removal method is more practical to be used to estimate the average residual stress of the multi-layer system not only because the layer removal method estimates the bulk behavior but also when the metal film is thin (e.g., 200A for Cr layer), x-ray technique becomes impractical. By annealing the sputtered structure up to 250°C, the residual stresses, in particularly Cu layer, decreased on both sides in x- and y-directions. From the main results drawn from the present studies, the layer removal sequence for the curvature method shows significant affects on the obtained results of residual stresses. Minimizing influences caused by layer removal sequences as well as removing duration and temperature provides the most accurate results on residual stress measurements.

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