Article
Engineering, Chemical
A. Gomez-Aviles, M. Penas-Garzon, C. Belver, J. J. Rodriguez, J. Bedia
Summary: Activated carbons were prepared by chemical activation of lignin with FeCl3 using microwave heating, resulting in a microporous carbon with high surface area and acidic properties. The adsorption of acetaminophen reached about 300 mg.g(-1) at 60 degrees C, with an endothermic process and increased randomness observed. The kinetics was described by pseudo-second order model and breakthrough curves fitted well to various adsorption models, showing potential for application in water treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Agronomy
Hipolito Murga-Orrillo, Francisco De Almeida Lobo, Ricardo Santos Silva Amorim, Luiz Fernandes Silva Dionisio, Ever Nunez Bustamante, Fred William Chu-Koo, Luis Alberto Arevalo Lopez, Cesar Oswaldo Arevalo-Hernandez, Carlos Abanto-Rodriguez
Summary: This study investigated the effects of altitude and soil fertility on the production of tara pods in Cajamarca, Peru. It was found that an increase in temperature led to a decrease in the length and width of the pods and seeds. The association with annual crops and perennial pasture was beneficial for the size and weight of the pods. The soil contents of calcium carbonate, phosphorus, and boron also had significant impacts on the size and weight of the tara pods.
Article
Environmental Sciences
Shengquan Zeng, Eunsung Kan
Summary: This study proposed a cyclic process of adsorption and PS oxidation-driven regeneration using FeCl3-activated biochar (FA-BC) for the removal of MC-LR from water. Increasing temperature enhanced both the adsorption rate of MC-LR on FA-BC and the regeneration efficiency of MC-LR spent FA-BC. In addition, decreasing pH and increasing PS concentration also improved the regeneration efficiency.
Article
Chemistry, Multidisciplinary
Homam T. S. AL-Sayd Toohi, Muwafaq Ayesh Rabeea, Jasim Ali Abdullah, Rasim Farraj Muslim
Summary: This study presents a modified method for the preparation of activated carbon using low-cost materials, characterized by SEM-EDX and FTIR, and investigated for its adsorption properties and capacity for a novel azo dye. The synthesized activated carbon demonstrated efficient pore presence on the surface with various diameter ranges and a high adsorption capacity for the dye.
Article
Polymer Science
Luca Nuvoli, Paola Conte, Costantino Fadda, Jose Antonio Reglero Ruiz, Jose M. Garcia, Salvatore Baldino, Alberto Mannu
Summary: By mixing fish gelatin, Tara gum, and glycerol in different ratios and subjecting Tara gum to ball milling treatment, films with different morphologies can be obtained. The amount of glycerol and the type of Tara gum used strongly influence the morphology and density of the films, which in turn determine the thermal and mechanical behaviors. Improvements in thermal stability and mechanical properties can be achieved by using milled Tara gum or increasing glycerol content, up to 20 wt%. Exceeding this percentage of glycerol is detrimental to film quality and reduces thermal and mechanical performances.
Article
Chemistry, Applied
V. J. Huamani-Melendez, M. A. Mauro, R. Darros-Barbosa
Summary: Commercial Tara gum from three sources was purified by precipitation with isopmpanol and evaluated on the structural, physicochemical and rheological properties. The monosaccharide composition of Tara gum galactomannans showed strong influence of their origin, with intrinsic viscosity being influenced by origin and temperature. The rheological behavior at diluted concentrations resulted in shear thickening fluid.
FOOD HYDROCOLLOIDS
(2021)
Article
Chemistry, Multidisciplinary
Susilawati, Yuan Alfinsyah Sihombing, Siti Utari Rahayu, Lilik Waldiansyah, Yuni Yati Br Sembiring
Summary: This study investigates the potential use of activated charcoal synthesized from cocoa shells waste and nanosize natural zeolite as an adsorber to increase the concentration of bioethanol. The results show that the activated zeolite produced has a small particle size and high water absorption capacity, leading to a significant increase in bioethanol concentration after 45 minutes of contact with water vapor.
Article
Chemistry, Analytical
Changgil Son, Wonyeol An, Geonhee Lee, Inho Jeong, Yong-Gu Lee, Kangmin Chon
Summary: Chemically-activated tangerine peel biochars showed enhanced efficiency in removing phosphate ions, with the adsorption process following pseudo-second-order kinetics or Langmuir model. However, the removal efficiency decreased with increasing ionic strength.
Article
Environmental Sciences
Nor Adilla Rashidi, Awais Bokhari, Suzana Yusup
Summary: The kinetic analysis showed that the rate of CO2 adsorption of both activated carbons increased with temperature, indicating higher mobility of CO2 adsorbates at elevated temperatures. However, the adsorption capacity of both activated carbons decreased at higher temperatures, suggesting exothermic and physisorption behavior. The pseudo-second-order kinetics model provided a better fit for CO2 adsorption, with a coefficient of determination (R-2) close to unity, regardless of the adsorption temperature.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Materials Science, Paper & Wood
Wei Xu, Junli Liu, Kang Sun, Yanyan Liu, Chao Chen, Ao Wang, Hao Sun
Summary: The effects of different activation temperatures on preparing activated carbon by phosphoric acid were systematically studied, showing that activated carbon prepared at 350 to 425 degrees Celsius had excellent performance, while higher temperatures resulted in decreased adsorption performance.
Article
Environmental Sciences
Sun-Kyung Ahn, Keun-Young Park, Won-jung Song, Young-min Park, Ji-Hyang Kweon
Summary: This study investigated the improvement of PFOA adsorption in water through Fe impregnation and thermal treatment of activated carbon (AC). The results from kinetic and isotherm models showed that the modified AC with Fe impregnation had higher adsorption capacity. The evenly distributed iron content on the modified AC was visualized, and the pore structures were largely recovered after thermal treatment. The increase in Fe impregnated surface was crucial for improving PFOA adsorption.
Article
Environmental Sciences
Muniandy Gayathiri, Thiruchelvi Pulingam, K. T. Lee, Kumar Sudesh
Summary: The use of activated carbon is increasing in various industrial applications, and its production from biomass waste requires further research on key factors and mechanisms. Optimizing key parameters and understanding the characteristics and mechanisms of activated carbon are important for its effective production and application.
Article
Engineering, Environmental
Juntong Liu, Ruoyu Sun, Yinsu Wu, Shengtao Xing
Summary: In this study, CuOX/MnFe2O4 was synthesized and used as a catalyst for the regeneration of GAC. The results showed that CuOX/MnFe2O4 exhibited high catalytic activity, with singlet oxygen being the dominant reactive species for the degradation of organic pollutants.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Food Science & Technology
Carlos A. Ligarda-Samanez, David Choque-Quispe, Elibet Moscoso-Moscoso, Mary L. Huaman-Carrion, Betsy S. Ramos-Pacheco, German de la Cruz, Jose C. Arevalo-Quijano, Jenny C. Munoz-Saenz, Mauricio Munoz-Melgarejo, Uriel R. Quispe-Quezada, Edgar Gutierrez-Gomez, Rober Luciano-Alipio, Miluska M. Zamalloa-Puma, Genaro Julio Alvarez-Lopez, Reynaldo Sucari-Leon
Summary: Ethanolic extracts of propolis and bee honey are rich in bioactive compounds beneficial to human health. Different wall materials were compared in the spray-drying microencapsulation of these extracts. Microencapsulates A, produced using maltodextrin and tara gum, and microencapsulates B, produced using modified native potato starch and tara gum, showed high values of phenolic compounds, flavonoids, and antioxidant capacity, as well as typical spray-drying process characteristics. The release kinetics of phenolic compounds were high, and modified potato starch was found to be a better encapsulant than maltodextrin.
Article
Environmental Sciences
Intan Syafiqah Ismail, Nor Adilla Rashidi, Suzana Yusup
Summary: Bamboo, as the fastest-growing plant abundant in Malaysia, is utilized as a starting material for activated carbon production and shows promising potential in CO2 capture. The bamboo-based activated carbons prepared through H3PO4 activation exhibit high BET surface area and CO2 adsorption capacity. Therefore, the H3PO4 activation method for converting bamboo waste into activated carbon is highly effective and promising.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Daniel Gonzalez-Munoz, Almudena Gomez-Aviles, Carmen B. Molina, Jorge Bedia, Carolina Belver, Jose Aleman, Silvia Cabrera
Summary: Grafting photoorganocatalysts into mesoporous silica materials is an ideal approach for obtaining effective catalysts, maintaining their optical properties, and degrading pollutants in water media.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Manuel Penas-Garzon, Almudena Gomez-Aviles, Javier Alvarez-Conde, Jorge Bedia, Eva M. Garcia-Frutos, Carolina Belver
Summary: This study proposes a TiO2 photocatalyst anchored with AZA4 molecule, which exhibits excellent photocatalytic performance under simulated solar irradiation for the degradation of pharmaceuticals in water.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Environmental Sciences
Guilan Gao, Zhuoxiang Li, Shuai Chen, Carolina Belver, Donghai Lin, Zixiang Li, Jie Guan, Yaoguang Guo, Jorge Bedia
Summary: Graphite and plastic recycled from spent lithium ion batteries were used to synthesize catalysts for the removal of 4-chlorophenol in water. The combination of graphite and plastic-based carbon resulted in the best removal performance. The study demonstrates a promising way of recycling graphite and plastic for wastewater treatment.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Almudena Gomez-Aviles, Rafael R. Solis, Eva M. Garcia-Frutos, Jorge Bedia, Carolina Belver
Summary: This work demonstrates the functionalization of UiO-66-NH2 with cyclopentyl or cyclohexyl rings, resulting in materials with reduced bandgaps and enhanced separation of photogenerated charges. These functionalized materials exhibit higher photocatalytic performance for the solar abatement of acetaminophen compared to UiO-66-NH2. The proposed photocatalytic activation mechanism suggests the significant contribution of holes and superoxide radicals. The cycloalkyl functionalization of UiO-66-NH2 presents a promising approach to design novel photocatalysts for the solar abatement of emerging contaminants.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Xin-Yu Jiang, Eilhann Kwon, Jet-Chau Wen, Jorge Bedia, Bui Xuan Thanh, Suresh Ghotekar, Jechan Lee, Yu-Chih Tsai, Afshin Ebrahimi, Kun-Yi Andrew Lin
Summary: The increasing consumption of room-temperature ionic liquids (RTILs) poses a serious threat to aquatic ecology due to their toxicities. Thus, it is urgent to develop processes for removing RTILs from water, with 1-butyl-3-methylimidazolium chloride (C4mimCl) being the most representative RTIL for studying removal methods. This study presents a hierarchical structure, Cu2S on copper mesh (CSCM), which exhibits superior catalytic activity for degrading C4mim through activating hydrogen peroxide (HP).
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Review
Chemistry, Physical
Malihe Moazeni, Mohammad Reza Maracy, Roghayeh Ghazavi, Jorge Bedia, Kun-Yi Andrew Lin, Afshin Ebrahimi
Summary: This systematic review investigates the chemical removal technologies of Triclosan (TCS) in water environments, focusing on reaction parameters and by-products. The study finds that the average removal percentage of TCS through chemical processes is 77.20%, and the dechlorination process using a nano-bio hybrid subset has the highest average removal percentage of 96.13%.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Ta Cong Khiem, Nguyen Nhat Huy, Eilhann Kwon, Xiaoguang Duan, Stanislaw Waclawek, Jorge Bedia, Yu-Chih Tsai, Afshin Ebrahimi, Farshid Ghanbari, Kun-Yi Andrew Lin
Summary: Designing defects-rich hollow heterostructure bimetal sulfides is an efficient strategy for accelerated monoper-sulfate (MPS) activation. The mono-step sulfidation method was used to develop sulfur vacancy (SV)-rich hollow oxygen-doped Co9S8/Fe7S8 (O-CSFS), which exhibited superior performance due to the highly elec-troactive sites induced by SV and oxygen doping, low charge resistance, and increased conductivity. The ROS-driven pathway and ET-driven pathway were found to be responsible for PCM degradation in the O-CSFS/MPS system, with the ET-driven pathway playing a more significant role.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2023)
Article
Environmental Sciences
Babak Kakavandi, Milad Zehtab Salmasi, Mohammad Ahmadi, Azra Naderi, Paolo Roccaro, Jorge Bedia, Masoumeh Hasham Firooz, Roshanak Rezaei Kalantary
Summary: Developing high-performance heterogeneous catalysts for the activation of peroxymonosulfate (PMS) to remove organic pollutants from wastewater is crucial. In this study, spinel cobalt ferrite (CoFe2O4) materials were coated on the surface of powdered activated carbon (CoFe2O4@PAC) for efficient PMS activation. The CoFe2O4@PAC catalyst effectively eliminated 99.4% of bisphenol A (BP-A) within 60 minutes of reaction under UV light. The catalyst demonstrated superior performance compared to its components and homogeneous catalysts. LC/MS analysis was used to evaluate the by-products and intermediates, and a possible degradation pathway was proposed.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Editorial Material
Chemistry, Physical
Carolina Belver, Jorge Bedia
Article
Education, Scientific Disciplines
Irene Moreno-Medina, Manuel Penas-Garzon, Carolina Belver, Jorge Bedia
Summary: A teaching innovation project based on gamification and immediate feedback was conducted to enhance the achievement and motivation of students in the Mechanical Design of Equipment subject in Chemical Engineering Degree, using the Wooclap software. The project was evaluated with institutional questionnaires and a specific questionnaire designed by the teaching team. Results indicated that the use of Wooclap in the classroom had a positive impact, increasing student motivation and improving academic achievement. The constructive comments from students also provided the teaching team with opportunities for future development and updates.
EDUCATION FOR CHEMICAL ENGINEERS
(2023)
Article
Biochemistry & Molecular Biology
Jhonatan Martinez, Martin Colan, Ronald Castillon, Pierre G. Ramos, Robert Paria, Luis Sanchez, Juan M. Rodriguez
Summary: Capacitive deionization (CDI) is a cost-effective technology for removing dissolved ions from saline water. This research developed high-performance CDI electrodes based on activated carbon modified with zinc oxide nanorods. The electrodes exhibited improved absorption capacity and salt adsorption rate compared to the pristine activated carbon. The study also quantified the energy efficiency and concentration of the effluent solution during the desalination process.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Engineering, Environmental
Rafael R. Solis, Manuel Penas-Garzon, Carolina Belver, Juan J. Rodriguez, Jorge Bedia
Summary: This work introduces the novel use of a highly stable UiO-66-NH2 MOF in water, demonstrating its excellent catalytic performance and removal efficiency for sulfamethoxazole. The synthesis method and Zr precursor have significant effects on the properties of the MOF.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu
Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian
Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma
Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven
Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai
Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang
Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jinzhi Cai, Zhenshan Li
Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao
Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu
Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag
Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao
Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo
Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong
Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve
Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.
CHEMICAL ENGINEERING JOURNAL
(2024)