Eun Jung Sim , Kumaresan Sakthiabirami , Tae Gon Jung , Seong Kyeong Jo , Su Jung Lee , Pai Xu , Ha Kyoung Sung , Eun Hye Lee , Ki Chull Yoon , Kwan Su Kang , Yong Hoon Jeong , David B. Thordarson , Choong Sik Lee , Sung Min Kim , Chan Kang , Jae Hwang Song , Won Ho Park
{"title":"Bioabsorbable PLA/PHA composite pins for orthopedic applications: In vitro and in vivo study","authors":"Eun Jung Sim , Kumaresan Sakthiabirami , Tae Gon Jung , Seong Kyeong Jo , Su Jung Lee , Pai Xu , Ha Kyoung Sung , Eun Hye Lee , Ki Chull Yoon , Kwan Su Kang , Yong Hoon Jeong , David B. Thordarson , Choong Sik Lee , Sung Min Kim , Chan Kang , Jae Hwang Song , Won Ho Park","doi":"10.1016/j.jiec.2025.03.023","DOIUrl":"10.1016/j.jiec.2025.03.023","url":null,"abstract":"<div><div>Poly(lactic acid) (PLA) is a bioabsorbable polymer that is commonly used in orthopedic implants. However, PLA implants can refracture owing to their inherent brittleness and inflammation caused by their acidic degradation products. Polyhydroxyalkanoates (PHAs) are biodegradable polyester derived from microorganisms. Some types such as poly (4-hydroxybutyrate) (P4HB), can be molded and processed at 150 ℃. PHAs can exhibit semi-crystalline or amorphous properties, depending on their composition and structure. Furthermore, PHA can be blended with PLA to enhance the stability and flexibility of the implant. In this study, we fabricated a pin-type implant composed of poly(3-hydroxybutyrate-<em>co</em>-4-hydroxybutyrate) (P3HB-4HB) using injection molding and investigated their applicability as an orthopedic implant through<!--> <em>in vitro<!--> </em>and<!--> <em>in vivo</em> <!-->tests. Remarkably, the PLA/PHA pin did not exhibit cytotoxicity in<!--> <em>in vitro</em> <!-->experiments using MC3T3-E1cells. A rat model of long bone fracture was used for the<!--> <em>in vivo</em> <!-->study. <span><span>Overall, the brittleness of the conventional PLA was decreased by blending it with<!--> </span><svg><path></path></svg></span>P3HB-4HB (PHA).<!--> <em>In vivo<!--> </em>studies revealed that the bone union rate of PLA/PHA pins was higher than that of PLA pins. The prepared PLA/PHA composite pin offers superior mechanical properties and enhanced bone healing, making them a promising implant for orthopedic applications.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"146 ","pages":"Pages 861-870"},"PeriodicalIF":5.9,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783410","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}
Yu Qing, Yongzheng Jia, Xiaolong Xing, Jianbang Ge, Mingyong Wang
{"title":"Selective vanadium extraction by reductive acid leaching from ultra-low vanadium spent V2O5-WO3/TiO2 catalysts","authors":"Yu Qing, Yongzheng Jia, Xiaolong Xing, Jianbang Ge, Mingyong Wang","doi":"10.1016/j.jiec.2025.03.013","DOIUrl":"10.1016/j.jiec.2025.03.013","url":null,"abstract":"<div><div>Spent V<sub>2</sub>O<sub>5</sub>-WO<sub>3</sub>/TiO<sub>2</sub> catalyst is a harmful but valuable secondary resources. Efficient recovery of vanadium from spent V<sub>2</sub>O<sub>5</sub>-WO<sub>3</sub>/TiO<sub>2</sub> catalyst is still a great challenge. Here, a selective leaching and enrichment route of vanadium from ultra-low vanadium spent V<sub>2</sub>O<sub>5</sub>-WO<sub>3</sub>/TiO<sub>2</sub> catalyst is proposed by reductive acid leaching using clean oxalic acid and iron salt precipitation. The composition, structure and element valence of spent V<sub>2</sub>O<sub>5</sub>-WO<sub>3</sub>/TiO<sub>2</sub> catalyst are firstly characterized. Thermodynamic calculations of V-H<sub>2</sub>SO<sub>4</sub>-H<sub>2</sub>O system are carried out to determine the existence form of vanadium and reaction feasibility between vanadium oxides and acid. It is found that oxalic acid is more efficient reducing agent in acidic solution for the conversion of V(5+) to V(4+). According to potential-pH diagram of V-H<sub>2</sub>SO<sub>4</sub>-H<sub>2</sub>O system, high temperature and low pH bring about high reducing potentials of V(5+) to V(4+). The effects of temperature, liquid-to-solid ratio, H<sub>2</sub>SO<sub>4</sub> concentration and leaching time on the leaching rate of V are investigated. At optimal conditions, the leaching rate of V from ultra-low vanadium spent V<sub>2</sub>O<sub>5</sub>-WO<sub>3</sub>/TiO<sub>2</sub> catalyst reaches 90.13 %, and vanadium concentration in the leach solution is 1.23 g/L. By the iron salt precipitation, vanadium-rich slag with vanadium content of 25.08 wt% is obtained and a high-quality raw material for further vanadium extraction.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"146 ","pages":"Pages 853-860"},"PeriodicalIF":5.9,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783409","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}
Kamil Kayode Katibi , Rabaah Syahidah Azis , Ibrahim Garba Shitu , Ismayadi Ismail , Chen Soo Kien , Lim Kean Pah , Mohd Mustafa Awang Kechik , Khairul Faezah Md Yunos , Abiodun Abdulhameed Amusa
{"title":"Tuning synthesis temperature spectrum to unlock multifunctional potential in multi-walled carbon nanotubes for EMI shielding and optical applications","authors":"Kamil Kayode Katibi , Rabaah Syahidah Azis , Ibrahim Garba Shitu , Ismayadi Ismail , Chen Soo Kien , Lim Kean Pah , Mohd Mustafa Awang Kechik , Khairul Faezah Md Yunos , Abiodun Abdulhameed Amusa","doi":"10.1016/j.jiec.2025.02.034","DOIUrl":"10.1016/j.jiec.2025.02.034","url":null,"abstract":"<div><div>Multi-walled carbon nanotubes (MWCNTs) have garnered significant attention for their promising potential in electromagnetic interference (EMI) shielding due to their superior electrical conductivity, structural stability, and multifunctional properties. This study explores how chemical vapor deposition (CVD) synthesis temperatures (700 °C, 800 °C, and 900 °C) affect the structural, morphological, thermal, absorption, optical properties, and EMI shielding of MWCNTs. Using advanced characterization techniques, including High-Resolution Transmission Electron Microscopy (HRTEM), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Raman spectroscopy, Thermogravimetric Analysis (TGA), and optical absorption spectroscopy, the MWCNTs were thoroughly analyzed. The 900 °C sample exhibited superior EMI shielding effectiveness (38 dB in the X-band) and high optical transmittance of 85 % at 550 nm. In comparison, the 700 °C sample had higher defect density, resulting in lower transmittance (35 %) and reduced shielding (22 dB). These findings demonstrate a direct correlation between higher synthesis temperatures, improved crystallinity, and enhanced electromagnetic and optical performance. This research highlights the potential of MWCNTs for high-performance EMI shielding materials, particularly suited for advanced applications in telecommunications, electronics, and aerospace.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"146 ","pages":"Pages 826-852"},"PeriodicalIF":5.9,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783408","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}
{"title":"Growth of nano-porous covalent organic frameworks on graphenic carbon hollow spheres; towards designing advanced multi-functional nanocomposites","authors":"Seyyed Arash Haddadi , Mohammad Ramezanzadeh , Ghasem Bahlakeh , Bahram Ramezanzadeh","doi":"10.1016/j.jiec.2024.06.045","DOIUrl":"10.1016/j.jiec.2024.06.045","url":null,"abstract":"<div><div><span>For the first time, melamine-based covalent organic frameworks<span> (COFs) were synthesized in situ on the graphenic shells of carbon hollow spheres (CHSs) for achieving a hybrid nanomaterial with unique thermo-mechanical characteristics. To improve the thermal stability of CHS-COF nanostructures (NSs), Zn</span></span><sup>2+</sup><span>/sodium L-glutamate (ZG) inorganic-organic complexes were loaded in their porosities and interior spaces (denoted as ZG@CHS-COF). The fabricated epoxy nanocomposites<span> illustrated enhanced thermo-mechanical and UV-shielding properties. The tensile strength<span> of the epoxy coatings<span>, filled with CHS-COF and ZG@CHS-COF NSs, increased by 185 and 168 %, respectively, compared to the blank epoxy. DMTA results revealed that the glass transition temperature (</span></span></span></span><em>T</em><sub>g</sub>) of the epoxy, filled with CHS-COF and ZG@CHS-COF NSs increased around 2.1 and 8.1 °C, respectively. Also, the lower height of tan(<em>δ</em>) peaks (<em>HTP</em>) in the presence of CHS-COF and ZG@CHS-COF NSs illustrated their better interactions with epoxy chains. The highest ash content (≈46.3 %) and superior thermal durability were acquired in the presence of ZG@CHS-COF NSs. TEM results confirmed the better dispersion and distribution of ZG@CHS-COF NSs than CHS ones. The ZG@CHS-COF-filled epoxy coating led to a 71 % reduction in color changes (Δ<em>E</em>) after 3 weeks of UV irradiation.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 351-365"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141713777","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}
Salwa M. Abdallah , Hamada B. Hawash , Aya Hamdy , Nada A. Omran , Mohamed Hagar , Nader Shehata , Ahmed H. Hassanin , El Sayed A. Shalaby
{"title":"Eco-friendly electrospun nanofibers for air filtration enhanced by TiO2 nanoparticles reactive phases for superior capturing the emitted polycyclic aromatic hydrocarbons (PAHs)","authors":"Salwa M. Abdallah , Hamada B. Hawash , Aya Hamdy , Nada A. Omran , Mohamed Hagar , Nader Shehata , Ahmed H. Hassanin , El Sayed A. Shalaby","doi":"10.1016/j.jiec.2024.09.055","DOIUrl":"10.1016/j.jiec.2024.09.055","url":null,"abstract":"<div><div>The electrospinning nanofibrous filters have attracted much attention owing to their distinctive physicochemical properties. This work focused on designing a novel, straightforward prototype model and fabricating eco-friendly electrospun nanofiber filters as promising air filtration. The synthesized electrospun nanofiber is composed of cellulose acetate (CA) and thermoplastic polyurethane (TPU), which was enhanced by TiO<sub>2</sub> nanoparticles to improve the capturing of low, medium, and high molecular weight PAHs. The fabricated CA:TPU/TiO<sub>2</sub> and their derivatives were analyzed using FT-IR, XRD, TEM, SEM, TGA, and mechanical characteristics. Different concentrations of TiO<sub>2</sub> (2 %, 4 %, 6 %, 8 %) were evaluated. The determinations of PAHs were achieved using gas chromatography-mass spectrometry (GC–MS) with a TG-5MS column. The newly designed prototype has two air pathways with identical specifications; therefore, it could simultaneously evaluate the efficiency of two filters. In Motobas dumpsite (agricultural sources), the results indicated that the highest efficiency of electrospun nanofiber filters was CA:TPU/TiO<sub>2</sub> 6 %, captured 3041 µg/m<sup>3</sup> of total PAHs, and also in the incinerator stack (industrial sources) was CA:TPU/TiO<sub>2</sub> 6 % captured 9401 µg/m<sup>3</sup> of total PAHs. The concentrations of low molecular weight PAHs were greater than the high molecular weight in all sites, and the electrospun CA:TPU/TiO<sub>2</sub> was the most effective catalyst for air purification.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 645-659"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151638","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}
Heba Isawi , Emad M. Ahmed , Marwa Rabee , Hesham Moustafa
{"title":"Using natural antioxidant Rhubarb extracts in PVA/chitosan bio-adsorbent films for efficient removal of cationic and anionic dyes from polluted water","authors":"Heba Isawi , Emad M. Ahmed , Marwa Rabee , Hesham Moustafa","doi":"10.1016/j.jiec.2024.09.049","DOIUrl":"10.1016/j.jiec.2024.09.049","url":null,"abstract":"<div><div>In this research, sustainable membrane films were developed for removal of cationic and anionic dyes from wastewater based on polyvinyl alcohol/chitosan (PVA/CS) incorporated with natural antioxidant Rhubarb dye (Rh) extracts. Rh dye was extracted from Rhubarb roots by a green method. Three different quantities of Rh dye extracts (i.e., 2.5, 5, and 10 %) were used to fabricate crosslinked PVA/CS films by solvent-casting approach. The fabricated films subjected to different techniques such as X-ray diffraction (XRD), scanning electron microscopy combined with energy dispersive X-ray spectroscopy (SEM-EDX), dynamic mechanical analysis (DMA), as well as antioxidant activity. In all cases, the incorporation of Rh dye extracts inside the composite improved the crystallinity, biocompatibility, stress–strain properties, besides the DPPH scavenging activity reached 42.50 % for PVA/CS-10 % Rh membrane compared to PVA/CS blank (i.e., ∼ 2.10 %). Dyes adsorption including different cationic and anionic dyes implemented for all selected membranes. The data revealed that the membrane containing 10 % Rh dye was the optimum for removal of malachite green oxide (MG, 93 %) as cationic dye and methyl orange (MO, 95.70 %) as anionic dye. Moreover, the kinetics of the removal process exhibited that this process followed the Langmuir, Freundlich, Temkin, Dubinin-Radushkevich models, and the pseudo-1st order kinetic model, with an R<sup>2</sup> of 0.998 and 0.943 for MG and MG, respectively. Whereas, the adsorption process corresponded to the Freundlich isotherm model, with coefficients R<sup>2</sup> was of 0.989 and 0.988 for MO and MG, respectively. Other parameters including dye concentration, contacting time, pH media, and kinetic studies were also applied on PVA/CS-10 % Rh membrane.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 626-644"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151639","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}
{"title":"Conductive NR/PMMA-RAFT-CNT-rGO composites and their morphological, mechanical, and electrical properties","authors":"Dusadee Tumnantong , Sirilux Poompradub , Pattarapan Prasassarakich","doi":"10.1016/j.jiec.2024.07.011","DOIUrl":"10.1016/j.jiec.2024.07.011","url":null,"abstract":"<div><div>This study reports the synthesis of poly(methyl methacrylate) (PMMA)-carbon nanotube (CNT)-reduced graphene oxide (rGO) emulsions via reversible addition-fragmentation chain-transfer (RAFT)-mediated surfactant-free emulsion polymerization using a hydrophilic chain transfer agent. The rGO was prepared by the modified Hummers method and reduced with L-ascorbic acid. The effects of the CNT:rGO ratios and CNT and rGO contents on the conversion and stability of emulsion were investigated. Increasing the CNT and rGO contents from 1 to 4 wt% decreased the monomer conversion, while all the samples remained as colloidal dispersions. The morphology of PMMA-CNT-rGO composites showed the incorporated arrangement of a linear CNT portion connected with the rGO sheet dependent on the CNT:rGO ratio. Various PMMA-CNT-rGO filled natural rubber (NR) cast films were prepared. The NR/PMMA-CNT-rGO composite film with a 1 wt% filler loading at a CNT:rGO ratio of 1:1 presented a quite high modulus value (3.08 MPa) and sufficient intrinsic electrical conductivity (1.36 S/m) due to its strong filler-matrix interaction. Thus, the PMMA-RAFT-CNT-rGO composites at a very low filler content can be used as an effective reinforcement to enhance the mechanical and electrical properties of NR films with a high compatibility between the fillers and NR matrix.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 501-511"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141693246","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}
Hayeon Jo , Benny Ryplida , Kaustuv Roy , Sung Young Park
{"title":"Cancer intra and extracellular microenvironment-responsive electrical signal of touchable conductive hydrogel","authors":"Hayeon Jo , Benny Ryplida , Kaustuv Roy , Sung Young Park","doi":"10.1016/j.jiec.2024.06.027","DOIUrl":"10.1016/j.jiec.2024.06.027","url":null,"abstract":"<div><div><span>A wireless-integrated tumor microenvironment-responsive sensor designed from diselenide-functionalized carbon dot (dsCD) and hyaluronic acid polymer dot (PD(HA)) loaded in a mineralized conductive hydrogel (dsCD-PD(HA) Hydrogel) for detecting cellular reactive oxygen species (ROS) and pH detection. The manufactured ROS/pH responsive conductive hydrogel efficiently differentiated between cancer cells and normal cells in response to cellular factors through changes in fluorescence, electrical and mechanical response. Tumor microenvironment acidity and high ROS concentrations caused fluorescence recovery </span><em>via</em> boronate ester and diselenide bond cleavage alongside a change in electrical resistivity from 78.9 kΩ (pH 7.4) to 38.8 kΩ (0.1 mM H<sub>2</sub>O<sub>2</sub>/pH 6.8) due to disintegration of molecular interaction in the sensor. In vitro electrochemical analysis revealed different ΔR/R<sub>0</sub> bending profiles between cancer (26.2 % and 25.9 % for HeLa and PC-3, respectively) and normal cells (17.9 %), alongside the optical performance demonstrating higher regain of fluorescence of cancer cells (HeLa and PC-3) compared to the normal cells (CHO-K1). Additionally, the dsCD-PD(HA) Hydrogel demonstrated favorable biocompatibility and <em>in vitro</em> ROS scavenging, with selective targeting of cancer cells. A wireless sensing platform was developed by connecting the dsCD-PD(HA) Hydrogel sensor to a smartphone, showing a precise signal during detection <em>via</em> resistance or electro-mechanical signals.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 174-184"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141504742","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}
Huishuang Di , Baomin Sun , Mingyang Sun , Da Cui , Qing Wang
{"title":"Thermal reactivity and gas–solid product evolution during coal catalytic combustion: An experimental study","authors":"Huishuang Di , Baomin Sun , Mingyang Sun , Da Cui , Qing Wang","doi":"10.1016/j.jiec.2024.07.008","DOIUrl":"10.1016/j.jiec.2024.07.008","url":null,"abstract":"<div><div><span>To achieve efficient and clean coal combustion<span><span>, catalytic combustion technology has received widespread attention. This paper systematically studied the influence of calcium-based compounds on the thermal reactivity and gas–solid two-phase product evolution behavior of different coal using TG-MS and FTIR analysis, combining kinetics and thermodynamics methods, the catalytic coal mechanism was discussed. Results demonstrated that both catalysts improved the combustion reactivity, the burnout temperatures of lignite, </span>bituminous coal<span> and anthracite were reduced by 30.75 °C, 53 °C and 25.5 °C respectively with CaO, as well as decreased by 24.75 °C, 55.5 °C and 29 °C respectively with CaCl</span></span></span><sub>2</sub><span>. Meanwhile, it was worth noting that the activation energy of three coals was also reduced. CaCl</span><sub>2</sub> was more likely to bind with the C = O functional group on the surface of coal, forming CO-Ca<sup>2+</sup> complexes, resulting in a decrease in the content of C = O and C-O. While CaO tended to absorb volatile matter, causing local overheating and promoting the breakage of side chains and bridge bonds. Besides, the calcium-based compounds advanced the gas evolution peak of combustion and the emissions of CO<sub>2</sub>, NO<sub>2</sub> and SO<sub>2</sub><span> were effectively controlled. These results aimed at providing a new reference direction for further industrial development of clean coal combustion technology.</span></div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 468-476"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141710111","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}
Ece Polat , Ayşegül Nalan Genç , Füsun Şeyma Güngör , Mahmut Altınbaş
{"title":"Recovery of volatile fatty acids from anaerobic fermentation broth of baker’s yeast industry effluent by liquid−liquid extraction","authors":"Ece Polat , Ayşegül Nalan Genç , Füsun Şeyma Güngör , Mahmut Altınbaş","doi":"10.1016/j.jiec.2024.07.005","DOIUrl":"10.1016/j.jiec.2024.07.005","url":null,"abstract":"<div><div><span>As metabolic intermediates, volatile fatty acids (VFAs) can be recovered by separation and purification and contribute to the economy. It was necessary, however, to investigate the optimization of liquid–liquid extraction (LLE) in this study because of the technical difficulties encountered during the recovery of VFAs. For this reason, the organic solvents diethyl ether, trioctylamine, and toluene were investigated as </span>LLE solvents to extract VFAs from Baker’s yeast industry effluent, which contains high levels of organic matter. An optimal pH value of 3 was determined by a pH scan performed between pH 2.5 and pH 7.5. Principal component analysis (PCA) was used to determine the effects of organic solvents and pH on extraction efficiency. The extraction efficiency was evaluated using the optimal pH and multi-stage extraction experiments. In a three-stage extraction, diethyl ether recovered 82% of the VFAs, making it a promising organic solvent for extracting VFAs from anaerobic fermentation broth. PCA revealed that an opposite correlation between VFA recovery and pH for each organic solvent. Based on the results of the cost analysis, it was determined that the costs of recovering VFAs were reduced by 90% per kilogram.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 431-440"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141568903","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}