Korean Journal of Chemical Engineering最新文献

Advancements in Long-term Safety Evaluation Technology for Engineered Barrier System (EBS): A Comprehensive Review of Korea’s High-Level Waste Disposal R&D Program 工程屏障系统（EBS）长期安全评价技术的进展：对韩国高放废物处理研发项目的综合评价

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-04-29 DOI: 10.1007/s11814-025-00466-5

Jin-Seop Kim, Changsoo Lee, Seok Yoon, Minsoo Lee, Young Ho Lee, Ji-Won Kim, Minhyeong Lee, Yohan Cha, Jung-Tae Kim, Chang-Ho Hong, Taehyung Park, Minseop Kim, Taehyun Kim, Seong-Jun Ha, Kwang-Il Kim, Saeha Kwon, Seungbeom Choi, Yonghyeon Lee, Jang-Soon Kwon

{"title":"Advancements in Long-term Safety Evaluation Technology for Engineered Barrier System (EBS): A Comprehensive Review of Korea’s High-Level Waste Disposal R&D Program","authors":"Jin-Seop Kim, Changsoo Lee, Seok Yoon, Minsoo Lee, Young Ho Lee, Ji-Won Kim, Minhyeong Lee, Yohan Cha, Jung-Tae Kim, Chang-Ho Hong, Taehyung Park, Minseop Kim, Taehyun Kim, Seong-Jun Ha, Kwang-Il Kim, Saeha Kwon, Seungbeom Choi, Yonghyeon Lee, Jang-Soon Kwon","doi":"10.1007/s11814-025-00466-5","DOIUrl":"10.1007/s11814-025-00466-5","url":null,"abstract":"<div><p>Korea has officially initiated the development of an underground research laboratory (URL) at a depth of 500 m to facilitate a full-scale demonstration of high-level radioactive waste disposal technology. With the establishment of the URL, validating the long-term performance of the engineered barrier system (EBS) under deep geological conditions has become a critical priority. This paper presents Korea’s research plans and technological advancements in the long-term safety evaluations of EBS, a key component of a recently launched multi-ministerial R&D project for spent nuclear fuel management. The primary objective of this project is to assess the long-term integrity of EBS by analyzing coupled interactions with the disposal system as the real disposal environment evolves. The research is divided into four key areas: (1) establishing performance criteria for engineered barrier materials, (2) characterizing interactions among EBS components, (3) investigating coupled Thermo-Hydro-Mechanical-Chemical (THMC) behaviors, and (4) developing core technologies for in situ validation of EBS performance and coupled interactions. This nine-year project (2021–2029) is currently in its second phase(2024–2026), focusing on engineering-scale experiments, numerical model development, and preparation for large-scale field demonstration in the third phase. The outcomes of this study are expected to enhance the scientific basis for safety assessments and licensing in a disposal repository, as well as serve as a bridge for full-scale research at actual disposal depths utilizing URLs.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 6","pages":"1301 - 1316"},"PeriodicalIF":2.9,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11814-025-00466-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bio-inspired Fabrication of SLS-MWCNTs Multifunctional Composite Membrane with Bionic Coating for Efficient Separation of Complex Oily Wastewater 仿生涂层制备高效分离复杂含油废水的SLS-MWCNTs多功能复合膜

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-04-29 DOI: 10.1007/s11814-025-00471-8

Wen An, Jiong Li, Guoyong Du, Chunping Deng, Wenxin Ma

{"title":"Bio-inspired Fabrication of SLS-MWCNTs Multifunctional Composite Membrane with Bionic Coating for Efficient Separation of Complex Oily Wastewater","authors":"Wen An, Jiong Li, Guoyong Du, Chunping Deng, Wenxin Ma","doi":"10.1007/s11814-025-00471-8","DOIUrl":"10.1007/s11814-025-00471-8","url":null,"abstract":"<div><p>Industrial development has led to the generation of large amounts of oily wastewater, which poses significant threats to both environment and human health. These wastewater streams often contain various pollutants, such as organic dyes and heavy metal ions, creating an urgent need for multifunctional materials capable of efficiently separating these contaminants. In this study, we deposited sodium lignosulfonate (SLS)-modified multi-walled carbon nanotubes (MWCNTs) onto polyvinylidene fluoride (PVDF) polymer membranes by vacuum filtration. Subsequently, a hydrophilic bio-inspired coating, consisting of pyrogallic acid (PG) and silane-coupling agent (KH550), was deposited on the membrane surface. The resulting composite membrane exhibited exceptional superhydrophilicity and underwater superoleophobicity. This membrane demonstrated high efficiency in separating various oil–water emulsions, with a separation efficiency reaching 99% and a stable separation flux maintained above 350 L m⁻<sup>2</sup> h⁻<sup>1</sup>. The SLS-modified MWCNTs provided the membrane with abundant adsorption active sites, enabling excellent removal of cationic dyes and heavy metal ions. The removal rates of methylene blue (MB) and rhodamine B (RhB) exceeded 92% and 95%, respectively, while the adsorption capacities for Cu(II) and Pb(II) were 38.7 mg g<sup>−1</sup> and 46.8 mg g<sup>−1</sup>, respectively. Furthermore, the composite membrane demonstrated outstanding chemical stability and durability under highly acidic, alkaline, and 5% NaCl salt solution conditions. Consequently, the SLS-MWCNTs@P/K-MF composite membrane holds great promise for the treatment of complex oily wastewater in extreme environments and has significant potential for remediation of wastewater contamination.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 6","pages":"1317 - 1330"},"PeriodicalIF":2.9,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Zinc Recovery from Fly Ash for Preparation of a Porous Metal–Carbon Composite (PMCC) using Pyrolysis of Zinc-Terephthalate Composite: Adsorption of Bisphenol a from Contaminated Waters 利用热解对苯二甲酸锌复合材料从粉煤灰中回收锌制备多孔金属碳复合材料 (PMCC)：吸附受污染水体中的双酚 a

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-22 DOI: 10.1007/s11814-025-00421-4

Mohammad Ali Yavari, Majid Baghdadi, Mohammad Ali Abdoli

{"title":"Zinc Recovery from Fly Ash for Preparation of a Porous Metal–Carbon Composite (PMCC) using Pyrolysis of Zinc-Terephthalate Composite: Adsorption of Bisphenol a from Contaminated Waters","authors":"Mohammad Ali Yavari, Majid Baghdadi, Mohammad Ali Abdoli","doi":"10.1007/s11814-025-00421-4","DOIUrl":"10.1007/s11814-025-00421-4","url":null,"abstract":"<div><p>This research presents a groundbreaking approach to address water contamination by Bisphenol A (BPA) using a sustainable and environmentally friendly porous metal–carbon composite (PMCC) derived from municipal solid waste incineration (MSWI) remnants. The study focuses on extracting of zinc (Zn) from MSWI fly ash, and subsequently utilizing the recovered metal for synthesizing an innovative PMCC. The composite with a high surface area (225.6 m<sup>2</sup> g<sup>−1</sup>) demonstrates remarkable efficiency in adsorbing BPA, a significant water pollutant with adverse health effects. The successful preparation of the composite was confirmed by various analytical techniques, including FTIR, FESEM, XRD, and BET. The research employs response surface methodology to optimize the removal process and validates the model through statistical analysis. Maximum removal efficiency of 99.6% was achieved under the optimal values for adsorbent and reaction time of 0.862 g L<sup>−1</sup> and 50 min, respectively, for BPA with a concentration of 23.8 mg L<sup>−1</sup>. Additionally, this study investigated BPA adsorption isotherms and kinetic models, revealing the Langmuir isotherm and pseudo-second-order kinetic model as the most appropriate models for characterizing the adsorbent behavior. The regeneration and reusability of the PMCC were explored, indicating its potential for industrial applications. Overall, this research pioneers a sustainable approach to water treatment by integrating waste-derived material into the synthesizing of effective adsorbents for environmental remediation.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"1071 - 1083"},"PeriodicalIF":2.9,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Integrated Safety Assessment for Multi-stage Processing of Nuclear Decommissioning Waste Considering Material Partitioning and Transformation 考虑材料分配与转化的核退役废物多阶段处理综合安全评价

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-21 DOI: 10.1007/s11814-025-00438-9

In Gyu Chang, Jae Hak Cheong

{"title":"Integrated Safety Assessment for Multi-stage Processing of Nuclear Decommissioning Waste Considering Material Partitioning and Transformation","authors":"In Gyu Chang, Jae Hak Cheong","doi":"10.1007/s11814-025-00438-9","DOIUrl":"10.1007/s11814-025-00438-9","url":null,"abstract":"<div><p>This study developed a comprehensive safety assessment model implemented in Microsoft<sup>®</sup> Excel for the multi-stage processing of decommissioning waste. The model enhances existing approaches by allowing flexible combinations and sequencing of processing steps while considering material transformations such as phase separation during melting and incineration. It integrates the International Atomic Energy Agency Safety Reports Series No. 19 for small facilities and a module based on United States Nuclear Regulatory Commission Regulatory Guide 1.109 for large facilities to support age-specific public dose assessments. Partial verification of the public dose assessment module using NRCDose3 Code version 1.1.4 confirmed its accuracy and reliability. The model was tested at the comprehensive radioactive waste processing facility within the Kori nuclear power plant site and incorporated various waste types and processing steps including melting and incineration. Assessment accounted for phase changes and nuclide redistribution during processing. External exposure from <sup>60</sup>Co and <sup>137</sup>Cs was dominant for most workers under normal conditions, while <sup>54</sup>Mn exposure was significant for slag workers due to radionuclide partitioning. In abnormal conditions, inhalation became the major exposure pathway for workers and the public. This model offers a robust framework for evaluating radiological impacts in decommissioning waste processing to ensure enhanced protection for workers and the public.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 6","pages":"1169 - 1195"},"PeriodicalIF":2.9,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Upscaled Catalytic Production of Renewable Biofuels from Hexanoic Acid 己酸催化生产可再生生物燃料的规模化研究

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-20 DOI: 10.1007/s11814-025-00431-2

Dae Ho Hong, Mahlet N. Gebresillase, Jeong Gil Seo

{"title":"Upscaled Catalytic Production of Renewable Biofuels from Hexanoic Acid","authors":"Dae Ho Hong, Mahlet N. Gebresillase, Jeong Gil Seo","doi":"10.1007/s11814-025-00431-2","DOIUrl":"10.1007/s11814-025-00431-2","url":null,"abstract":"<div><p>The hydrodeoxygenation (HDO) reaction plays a crucial role in the catalytic upgrading of bio-derived platform chemicals to renewable fuels and chemicals. Given its industrial versatility, the production of primary alcohols via the catalytic hydrodeoxygenation of carboxylic acids has been explored using the RuSn/ZnO catalyst demonstrating high performance and robust stability in high-pressure continuous-flow reaction systems. However, the complex synthesis procedures of this catalyst impose limitations on its applicability and scalability. Additionally, powder catalysts could cause a pressure drop across the catalytic beds, causing another challenge in a large-scale operation. To address these issues, a simplified preparation method for RuSn/ZnO catalyst utilizing commercial support was developed and pelletized sing methylcellulose and bentonite as binder. The pellet catalysts, with varying binder ratios (wt<sub>binder</sub>/wt<sub>cat</sub>), were evaluated for the hydrodeoxygenation of hexanoic acid under different reaction conditions. Characterization results confirmed the formation of Ru<sub>3</sub>Sn<sub>7</sub> alloy on the RuSn/ZnO-5 (wt<sub>binder</sub>/wt<sub>cat</sub><sup>=</sup>0.05) catalyst, which selectively produced 1-hexanol with a yield of 72.7% under optimized reaction conditions. Notably, the RuSn/ZnO-30 catalyst could selectively produce biofuel components (1-hexanol and hexyl hexanoate) with high stability in 0.403 L/day of hexanoic acid hydrodeoxygenation. The developed catalytic system offers the potential for advancing biomass conversion as a viable alternative to the conventional petrochemical processes, contributing to the industrialization of sustainable fuels and chemicals production.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"1033 - 1043"},"PeriodicalIF":2.9,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Impact of Annealing on Metal–Oxygen Hybridization Process in Zinc Ferrite Thin Films Studied by Angle Dependent Soft X-Ray Absorption Spectroscopy 通过角度相关软 X 射线吸收光谱研究退火对锌铁氧体薄膜中金属-氧气杂化过程的影响

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-19 DOI: 10.1007/s11814-025-00444-x

Subhajit Nandy, Jitendra Pal Singh, Hee Kyoung Kang, Weon Cheol Lim, Sangsul Lee, Keun Hwa Chae

{"title":"Impact of Annealing on Metal–Oxygen Hybridization Process in Zinc Ferrite Thin Films Studied by Angle Dependent Soft X-Ray Absorption Spectroscopy","authors":"Subhajit Nandy, Jitendra Pal Singh, Hee Kyoung Kang, Weon Cheol Lim, Sangsul Lee, Keun Hwa Chae","doi":"10.1007/s11814-025-00444-x","DOIUrl":"10.1007/s11814-025-00444-x","url":null,"abstract":"<div><p>Herein, we report the impact of thermal annealing on the metal (Fe-3<i>d</i>)-oxygen (O-2<i>p</i>) hybridization in zinc ferrite thin films using the angle-dependent near-edge X-ray absorption fine structure (NEXAFS) technique. Zinc ferrite thin films of thickness ~ 100 nm are grown on MgO (200) substrates using radio frequency sputtering. Further, these as-grown films are annealed at temperatures 200, 400, and 600 °C in an air atmosphere to improve the crystallinity of the films. NEXAFS studies on Fe <i>L</i><sub>2,3</sub>-edge and O <i>K</i>-edge reveal the importance of thermal annealing on the modification of the electronic structure of zinc ferrite films. Angle-dependent NEXAFS studies on Fe <i>L</i><sub>2,3</sub>-edge suggest that the variation in electronic structure caused by the metal–oxygen hybridization in Zinc Ferrite is influenced by the film’s crystallinity through the annealing process. Further, the nature of metal–oxygen hybridization in zinc ferrite is confirmed by the O <i>K</i> pre-edge angle-dependent NEXAFS studies.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"1137 - 1142"},"PeriodicalIF":2.9,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

PVDF/CuO–VS4 Dual-Layer Hollow Fiber Photocatalytic Membrane for Bisphenol A Removal with Energy Storage Capability 具有储能功能的用于去除双酚 A 的 PVDF/CuO-VS4 双层中空纤维光催化膜

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-17 DOI: 10.1007/s11814-025-00430-3

Hazirah Syahirah Zakria, Mohd Hafiz Dzarfan Othman, Suhaila Borhamdin, Nurul Jannah Ismail, Mukhlis A. Rahman, Juhana Jaafar, Mohd Hafiz Puteh, Norbaya Hashim, Nirmala Devi AP Kerisnan, Nasehir Khan E. M. Yahaya, Alias Idris, Tonni Agustiono Kurniawan

{"title":"PVDF/CuO–VS4 Dual-Layer Hollow Fiber Photocatalytic Membrane for Bisphenol A Removal with Energy Storage Capability","authors":"Hazirah Syahirah Zakria, Mohd Hafiz Dzarfan Othman, Suhaila Borhamdin, Nurul Jannah Ismail, Mukhlis A. Rahman, Juhana Jaafar, Mohd Hafiz Puteh, Norbaya Hashim, Nirmala Devi AP Kerisnan, Nasehir Khan E. M. Yahaya, Alias Idris, Tonni Agustiono Kurniawan","doi":"10.1007/s11814-025-00430-3","DOIUrl":"10.1007/s11814-025-00430-3","url":null,"abstract":"<div><p>Bisphenol A (BPA) is toxic and its outflow into the water bodies raised concern, and suitable water treatment is needed. Photocatalysis is a promising method nowadays to move towards green technology. The novel photocatalytic dual-layer hollow-fiber membrane (DLHF) combines copper (II) oxide–vanadium tetrasulfide (CuO–VS<sub>4</sub>) with a polyvinylidene fluoride (PVDF) membrane for efficient BPA removal both day and night. CuO and CuO–VS<sub>4</sub> were synthesized using sol–gel and hydrothermal methods, respectively, with varying hydrothermal times. PVDF/CuO–VS<sub>4</sub> DLHF photocatalytic membrane was fabricated using co-extrusion method by varying the ratio of CuO–VS<sub>4</sub>. Powdered catalyst and membranes were characterized using FESEM-EDX, XRD and AFM. CuO was synthesized at room temperature, while CuO–VS<sub>4</sub> synthesized at 12 h hydrothermal time was chosen to be deposited into PVDF membrane matrix. The 0.25 PVDF/CuO–VS<sub>4</sub> DLHF shows a uniform CuO–VS<sub>4</sub> distribution, achieving 70.24% photodegradation and 73.19% BPA rejection, with 74.05% regeneration efficiency after three cycles. Energy storage capability shows 60.0% of BPA successfully rejected after 120 min of analysis, and thus, PVDF/CuO–VS<sub>4</sub> DLHF is a preferential 3-in-1 function photocatalytic membrane for BPA degradation and rejection as well as a potential energy storage material for wastewater treatment with or without light.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"1055 - 1070"},"PeriodicalIF":2.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Valorization of Corncob as a Sustainable Feedstock for Lactic Acid Production via Improved Biomass-to-Glucose Conversion Based on KOH Pretreatment 基于KOH预处理改进生物质-葡萄糖转化玉米芯作为可持续乳酸生产原料的价值

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-16 DOI: 10.1007/s11814-025-00443-y

Chan Kyum Kim, Jeongho Lee, Seunghee Kim, Kang Hyun Lee, Ja Hyun Lee, Hah Young Yoo, Chun-Woong Park

{"title":"Valorization of Corncob as a Sustainable Feedstock for Lactic Acid Production via Improved Biomass-to-Glucose Conversion Based on KOH Pretreatment","authors":"Chan Kyum Kim, Jeongho Lee, Seunghee Kim, Kang Hyun Lee, Ja Hyun Lee, Hah Young Yoo, Chun-Woong Park","doi":"10.1007/s11814-025-00443-y","DOIUrl":"10.1007/s11814-025-00443-y","url":null,"abstract":"<div><p>Biorefining of food waste has gained increasing attention as a sustainable approach for producing platform chemicals such as lactic acid. In this study, corncob (CC), a byproduct of corn processing, was utilized as a feedstock for biorefining through biomass hydrolysis and lactic acid fermentation. Due to the low enzymatic digestibility of raw CC caused by its lignin content, KOH pretreatment was conducted prior to enzymatic hydrolysis to enhance glucose recovery. Among the tested KOH concentrations (1–5%), 3% KOH pretreatment yielded the highest biomass-to-glucose conversion (25.38%), with a solid recovery (SR) of 47.60%, glucan content (GC) of 57.23%, and enzymatic digestibility (ED) of 84.70%. These values represent a significant improvement compared to raw CC (biomass-to-glucose conversion: 7.97%; SR: 100%; GC: 35.22%; ED: 20.57%). Compositional and physicochemical analyses confirmed that 3% KOH-pretreated CC (3%KpCC) had a reduced lignin content (11.69%) compared to raw CC (20.48%), along with irregular cracks and crevices that improved enzymatic digestibility via easier enzyme access. Fermentation of <i>Lacticaseibacillus rhamnosus</i> with the hydrolysate as an alternative carbon source for 24 h was found to produce about 9.89 g/L lactic acid and 98.9% conversion, similar to the control medium (about 9.81 g/L production and 98.1% conversion). Overall, the mass balance analysis revealed a 3.2-fold increase in lactic acid production (251 g/kg biomass) with the 3% KOH pretreatment process compared to the control. This study demonstrates a significantly improved biorefinery strategy that effectively contributes to both CC waste management and value-added chemical production.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"1109 - 1116"},"PeriodicalIF":2.9,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Investigation on SLM’s Stability via the Mutual Solubility of Different Water pH + TOA + Organic Solvents and DFT Calculation 通过不同水pH + TOA +有机溶剂的相互溶解度和DFT计算研究SLM的稳定性

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-14 DOI: 10.1007/s11814-025-00435-y

Thanaporn Arunchai, Vanee Mohdee, Natthapol Triwongsa, Ura Pancharoen, Kasidit Nootong, Wikorn Punyain

{"title":"Investigation on SLM’s Stability via the Mutual Solubility of Different Water pH + TOA + Organic Solvents and DFT Calculation","authors":"Thanaporn Arunchai, Vanee Mohdee, Natthapol Triwongsa, Ura Pancharoen, Kasidit Nootong, Wikorn Punyain","doi":"10.1007/s11814-025-00435-y","DOIUrl":"10.1007/s11814-025-00435-y","url":null,"abstract":"<div><p>This work presents the influence of water pH on the stability of supported liquid membrane (SLM) regards its mutual solubility. For the solubility experiments, both liquid–liquid binary and ternary systems are studied in different water pH (2.0, 7.0, and 13.0) at 303.15 K and atmospheric pressure. In the organic phase, tri-<i>n</i>-octylamine (TOA) combined with various organic solvents is used; adjusted pH water is used in the aqueous phase. Results demonstrate that, in the organic phase, basic water reveals the least solubility. Data correlation utilizing the NRTL model fitted in well with the experimental data as validated by < 5% RMSD. For the interaction molecular study of the involved molecules, density function theory (DFT) is carried out. Application of the hollow fiber-supported liquid membrane (HFSLM) shows that stability is affected by the solubility of different pH water. It is noted that the basic-based feed provides the longest stability, which is consistent with the solubility results.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"1117 - 1135"},"PeriodicalIF":2.9,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Pyrolysis Products Separation of Lignin via Molecular Distillation and Liquid–Liquid Extraction 木质素热解产物的分子蒸馏-液-液萃取分离

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-14 DOI: 10.1007/s11814-025-00426-z

Hamidreza Soltani Panah, Dong Hwi Jeong

{"title":"Pyrolysis Products Separation of Lignin via Molecular Distillation and Liquid–Liquid Extraction","authors":"Hamidreza Soltani Panah, Dong Hwi Jeong","doi":"10.1007/s11814-025-00426-z","DOIUrl":"10.1007/s11814-025-00426-z","url":null,"abstract":"<div><p>In this communication, two sets of experimental data on lignin pyrolysis were proposed to design processes for product separation through Aspen Plus V12.1. After simulation, a comprehensive analysis was undertaken, encompassing both techno-economic evaluations and energy analyses, utilizing Aspen Process Economic Analyzer (APEA) V12 and Aspen Energy Analyzer (AEA) V12.1. The initial phase involved the development of processes via molecular distillation, facilitating components separation. Subsequent modifications incorporated liquid–liquid-extraction technique, with a comparative assessment of system performances. Techno-economic analysis revealed that, for the first dataset, solvent extraction resulted in an 8.9% and 10.3% reduction in total capital cost and equipment cost. Conversely, for the second dataset, one-step solvent extraction incurred a 25.0% and 26.0% increase in total capital cost and equipment cost, while two-stage solvent extraction led to a more substantial rise of 52.1% and 55.4%. In parallel, energy analysis outcomes indicated that, for the first dataset and the first scenario of the second dataset, peak values were observed for heating, with ratios of heating values to the sum of cooling and process exchanger values at 55.5, 44.8, and 1.0. In alternate scenarios, cooling values surpassed cumulative sum of heating and process exchanger values, yielding ratios of 1.6 and 1.5 for cooling values to the sum of heating and process exchanger values.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"971 - 986"},"PeriodicalIF":2.9,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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