Article
Biochemistry & Molecular Biology
Flora V. Romeo, Gina Granuzzo, Paola Foti, Gabriele Ballistreri, Cinzia Caggia, Paolo Rapisarda
Summary: This study aimed to increase the hydroxytyrosol content in olive mill wastewater (OMW) extract by microbial enzymatic activity. Results showed that W. anomalus strain and SP207 resin demonstrated the best performance in this process.
Article
Engineering, Chemical
Adrian Hernandez-Fernandez, Yolanda Garrido, Eduardo Iniesta-Lopez, Antonia Perez de los Rios, Joaquin Quesada-Medina, Francisco Jose Hernandez-Fernandez
Summary: This study investigated the polyphenols extracted from olive mill wastewater and olive leaf in an aqueous medium compared to traditional methanol-water extraction. The results showed that the polyphenol content in the aqueous extract of olive mill wastewater was similar to that obtained with methanol-water extraction, while the aqueous extract of olive leaf had lower total phenol content compared to the methanolic extract. However, both aqueous extracts exhibited similar antioxidant capacity, making them suitable for use as antioxidants in biological systems.
Article
Biotechnology & Applied Microbiology
Dayana P. Meneses, Livia Maria N. Paixao, Thatyane Fonteles, Eduardo J. Gudina, Ligia R. Rodrigues, Fabiano A. N. Fernandes, Sueli Rodrigues
Summary: Aureobasidium pullulans URM 7059 produced esterase using residual glycerol from biodiesel as the sole carbon source. The enzyme exhibited stability at neutral pH and temperatures below 30 degrees C. The airlift reactor operating at the highest air flow rate increased the enzyme productivity by 3-fold compared to shake-flask experiments, suggesting potential for remediation processes.
BIOCHEMICAL ENGINEERING JOURNAL
(2021)
Article
Agronomy
Leila Chaari, Norah Salem Alsaiari, Abdelfattah Amari, Faouzi Ben Rebah, Monem Kallel, Tahar Mechichi
Summary: Olive manufacturing generates highly polluting wastewater, and various treatments and valorization processes have been investigated by olive-oil-producing countries to manage this waste. In Tunisia, the government has adopted the spreading of olive mill wastewater (OMW) on soil to improve organic matter content in olive grove soil. The study found that this practice leads to positive physicochemical changes in the soil and could be a solution for managing OMW.
Article
Engineering, Environmental
Mohammed O. J. Azzam, Samer I. Al-Gharabli, Fadi F. Alrawash
Summary: This study investigates the use of air gap membrane distillation (AGMD) process for treating olive mill wastewater (OMW) to reduce pollution. The results show that all AGMD permeate samples have low chemical oxygen demand (COD) values, making them suitable for further treatment in centralized domestic wastewater treatment plants. A mathematical model was also developed to accurately calculate various parameters. The study provides valuable insights for the olive industry in Mediterranean countries.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
M. R. Martinez-Gallardo, M. M. Jurado, J. A. Lopez-Gozalez, A. Toribio, F. Suarez-Estrella, J. A. Saez, R. Moral, F. J. Andreu-Rodriguez, M. J. Lopez
Summary: This study investigates the treatment and utilization of olive mill wastewater sludge using four bio-treatments. The results show that these treatments effectively reduce the toxicity of the sludge, promote the growth of beneficial microbiota, and provide high-quality agricultural products.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Margarita A. Petoussi, Nicolas Kalogerakis
Summary: This study found that pomegranate and myrtle can be used for phytoremediation of olive mill wastewater, with better results in treating high organic load wastewater, although it may cause phytotoxic symptoms in plants. The efficiency of the proposed technology was demonstrated by significantly higher removal rates of key constituents and the contribution of plants to the wastewater treatment process.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Fabrizio Di Caprio, Lionel Tayou Nguemna, Marco Stoller, Massimiliano Giona, Francesca Pagnanelli
Summary: The study investigates controlling bacterial contaminants growth in heterotrophic microalgae cultures by using an uncoupled supply of glucose and nitrate. The results show the promising potential of SBR system for biomass productivity. However, grazer contamination and limitations in OMW treatment hinder the exploitation of OMW as an alternative organic substrate source.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Sumera Shabir, Noshin Ilyas, Maimona Saeed, Fatima Bibi, R. Z. Sayyed, Waleed Hassan Almalki
Summary: Olive mill wastewater (OMW) generated by olive oil production contains high levels of salt, organic matter, suspended particles, and toxic chemicals (especially phenols), which leads to increased biological and chemical oxygen demand. However, after pretreatment and treatment processes, OMW can have positive effects on plant development due to its high mineral content and organic matter. Evaluating the effects of treated and untreated OMW on soil fertility can provide insights into its potential role in increasing soil productivity.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Multidisciplinary
Imen Dali, Abdelkarim Aydi, Marko Stamenic, Lioua Kolsi, Kaouther Ghachem, Irena Zizovic, Abderrabba Manef, Daniel R. Delgado
Summary: Olive growing in Tunisia is economically and agriculturally important. However, the extraction of olive oil leads to the discharge of a large amount of olive mill wastewater (OMW), which poses a threat to the environment. Supercritical fluid extraction (SFE) can be used to purify OMW and extract high quality oil. The study found that the optimal conditions for oil extraction from lyophilized OMW using supercritical carbon dioxide (SC-CO2) were a pressure of 30 MPa and a temperature of 60 degrees Celsius.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Nutrition & Dietetics
Doretta Cuffaro, Andrea Bertolini, Simone Bertini, Claudio Ricci, Maria Grazia Cascone, Serena Danti, Alessandro Saba, Marco Macchia, Maria Digiacomo
Summary: This study aims to investigate the polyphenolic composition and nutraceutical properties of olive mill wastewaters (OMWWs) from two Tuscan olive cultivars. The results show that OMWW extracts exhibit antioxidant, antiradical, and anti-inflammatory activities, and could serve as potential functional ingredients in dietary supplements, pharmaceuticals, and cosmetics.
Article
Chemistry, Physical
Abeer Al Bawab, Muna Abu-Dalo, Aya Khalaf, Duaa Abu-Dalo
Summary: A new series of nanophotocatalysts and doped systems were prepared and characterized for the photocatalytic degradation of olive mill wastewater, showing that materials doped with Mn exhibited higher photocatalytic degradation efficiency.
Article
Engineering, Chemical
Goksu Celik, Omer Saygin, Isil Akmehmet Balcioglu
Summary: The study utilized olive mill wastewater (OMWW) for the efficient recovery of phenolic antioxidant HTyr, achieving a high HTyr recovery rate and enhancing the purity of the extracts through a multistage recovery process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Eleonora Russo, Andrea Spallarossa, Antonio Comite, Marcello Pagliero, Patrizia Guida, Vittorio Belotti, Debora Caviglia, Anna Maria Schito
Summary: The production of olive oil generates a considerable amount of wastewater, but this study successfully purified the wastewater and concentrated valuable polyphenols in a smaller volume using suitable filtration and concentration techniques. The purified water showed significant antioxidant activity and the wastewater samples showed widespread antimicrobial activity.
Article
Green & Sustainable Science & Technology
Pedro Cerqueira, M. A. Soria, Luis M. Madeira
Summary: This study presents autothermal reforming (ATR) as a potential solution for the treatment of olive mill wastewater (OMW), providing high organic load removal, renewable hydrogen production, and thermally neutral operation.
Article
Polymer Science
Eduardo J. Gudina, Marcia R. Couto, Soraia P. Silva, Elisabete Coelho, Manuel A. Coimbra, Jose A. Teixeira, Ligia R. Rodrigues
Summary: A low-cost culture medium (CSLM) was developed for EPS production by Rhizobium viscosum CECT908, using sugarcane molasses and corn steep liquor as the sole ingredients. The EPS produced in this medium showed higher yield stress and flow consistency index, indicating its potential use in Microbial Enhanced Oil Recovery.
Article
Chemistry, Physical
Aparecida Selsiane Sousa Carvalho, Julio Cesar Soares Sales, Felipe Valle do Nascimento, Bernardo Dias Ribeiro, Carlos Eduardo Conceicao de Souza, Ailton Cesar Lemes, Maria Alice Zarur Coelho
Summary: This study aimed to produce lipase from Yarrowia lipolytica IMUFRJ50682 in solid-state fermentation using by-products of the food processing industry and investigate its potential application in the hydrolysis of fish oil to produce polyunsaturated fatty acids. The combination of andiroba oil cake and soybean meal in a 50:50 proportion showed the maximum lipolytic activity after 24 hours of fermentation. The addition of soy oil and Tween 80 increased the enzyme activity by 1.5-fold. The solid biocatalyst showed a higher degree of hydrolysis than the enzymatic extract after 48 hours. Rating: 7 out of 10.
Article
Chemistry, Multidisciplinary
Ailton Cesar Lemes, Fabricio de Oliveira Molon, Alexandre da Silva Fagundes, Mariana Buranelo Egea, Marco Di Luccio, Susana Juliano Kalil
Summary: The study investigated ultrafiltration and diafiltration as initial steps for concentration and salt removal in beta-galactosidase purification processes. Results showed that ultrafiltration of the crude enzyme extract at pH 7.5 and 1.5 kgf/cm(2) with a 50 kDa polyethersulfone membrane achieved a 7.1-fold volume concentration, 1.2-fold purification factor, and 108.9% enzyme recovery rate. Increased operating pressure and salt addition resulted in reduced enzyme recovery. Diafiltration allowed for salt removal after beta-galactosidase purification, demonstrating potential application.
APPLIED SCIENCES-BASEL
(2023)
Review
Engineering, Chemical
Filipe Smith Buarque, Gabrielle Victoria Gauterio, Maria Alice Zarur Coelho, Ailton Cesar Lemes, Bernardo Dias Ribeiro
Summary: This review discusses the application of aqueous two-phase systems (ATPS) based on ionic liquids (IL) and deep eutectic solvents (DES) in selectively separating bioactive compounds. It highlights the importance of separating these compounds to enhance their availability and stability. The review also emphasizes the potential use of nonconventional ATPS in purification systems, including molecular modelling for predicting experimental conditions and investigating diverse compounds in phase-forming systems.
Article
Infectious Diseases
Sandra Pais, Mariana Costa, Ana Rita Barata, Ligia Rodrigues, Isabel M. Afonso, Goncalo Almeida
Summary: This study quantified beta-glucuronidase positive E. coli in fecal samples of breeding and laying hens in Portugal in 2019. Phylogenetic and pathogenic characterization, antimicrobial susceptibility, and detection of resistant extended-spectrum beta-lactamase (ESBL) genes were performed. The results showed that the quantity of E. coli was 6.03 log CFU/g in breeding hens and 6.02 log CFU/g in laying hens. The study highlights the potential risk of MDR E. coli to food safety and public health.
Article
Biotechnology & Applied Microbiology
Maria G. G. Sande, Debora Ferreira, Joana L. L. Rodrigues, Luis D. R. Melo, Athanasios Saragliadis, Dirk Linke, Felismina T. C. Moreira, Maria Goreti F. Sales, Ligia R. R. Rodrigues
Summary: In this study, a new point-of-care (PoC) diagnostic platform was developed to detect bacterial infections and address the increasing antimicrobial resistance crisis. By utilizing cell-systematic evolution of ligands by exponential enrichment (cell-SELEX) and next-generation sequencing, new aptamer sequences with high affinity for the ubiquitous surface protein A2 (UspA2) of Moraxella catarrhalis were identified. The best-performing aptamer, Apt1_RC, had a K-d value of 3.4 nM and was functionalized onto a label-free electrochemical biosensor for UspA2 detection.
BIOENGINEERING-BASEL
(2023)
Article
Food Science & Technology
Sueli Rodrigues, Fabiano A. N. Fernandes
Summary: This study investigated the use of cold plasma technology to modify coffee beans and improve aroma without the use of solvents or additives. Cold plasma was found to enhance desirable aroma notes and decrease undesirable ones. Chemical changes were observed, and the plasma technology proved effective in mitigating aroma defects.
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2023)
Article
Chemistry, Multidisciplinary
Tugce Caykara, Sara Fernandes, Adelaide Braga, Joana Rodrigues, Ligia R. Rodrigues, Carla Joana Silva
Summary: Prevention of bacterial adhesion is important in reducing biofilm formation and associated infections. In this study, a PET film was modified with silica nanoparticles and fluorinated carbon chains to create a superhydrophobic surface. However, contrary to expectations, bacterial adhesion, specifically of E. coli YadA, increased on the modified PET surfaces. This highlights the significance of material micro topography in bacterial adhesion.
Article
Materials Science, Multidisciplinary
Tugce Caykara, Sara Fernandes, Adelaide Braga, Joana Rodrigues, Ligia Raquel Rodrigues, Carla Joana Silva
Summary: Enhancing hydrophilicity of polymeric materials is crucial for achieving anti-adhesiveness. This study combined atmospheric plasma pre-treatment with UV grafting process to achieve durable surface modification on PET. The most effective conditions for atmospheric plasma process were found to be 15 kW power and 4 m/min speed, resulting in a reduction in contact angle from 70 +/- 6 degrees to approximately 30 degrees. However, the contact angle increased over time due to ageing and washing of the PET surface. Therefore, the plasma-pre-treated PET samples were further modified through a UV grafting process using NaAc and KAc, which exhibited contact angles of 8 +/- 3 degrees and 28 +/- 13 degrees respectively, and showed durability in ageing and washing tests. The anti-adhesive properties of the modified PET surfaces were evaluated using Escherichia coli expressing YadA, showing a reduction in bacterial adhesion by more than 90%.
Article
Cell Biology
Rita Silva-Pedrosa, Jonas Campos, Aline Marie Fernandes, Miguel Silva, Carla Calcada, Ana Marote, Olga Martinho, Maria Isabel Veiga, Ligia R. Rodrigues, Antonio Jose Salgado, Pedro Eduardo Ferreira
Summary: Neural injuries in cerebral malaria patients are a major cause of morbidity and mortality. This study proposes an in vitro system using cellular approaches to study human cerebral malaria. By analyzing gene expression profiles in human brain microvascular endothelial cells (HBMEC) activated by Plasmodium falciparum parasites, specific molecular alterations similar to the blood-brain barrier in cerebral malaria were identified. The impact of HBMEC-P. falciparum-activated secretomes on human brain organoids was evaluated to gain a deeper understanding of the physiological mechanisms underlying cerebral malaria.
Article
Engineering, Chemical
Ailton Cesar Lemes, Gabrielle Victoria Gauterio, Cezar Augusto da Rosa, Adriano Brandelli, Susana Juliano Kalil
Summary: This study purified and characterized a keratinolytic protease produced by Bacillus sp. P45 through the bioconversion of feather meal. The purification process involved the use of aqueous two-phase systems (ATPS) and diafiltration (DF) to obtain a highly purified enzyme. The purified protease was characterized in terms of protein profile, optimum temperature and pH, thermal deactivation, and performance in the presence of salts and organic solvents. The results provide valuable information for future studies on enzyme purification and the application of protease in various industrial processes.
Article
Biotechnology & Applied Microbiology
Catia Santos-Pereira, Joana Sousa, angela M. A. Costa, Andreia O. Santos, Teresa Rito, Pedro Soares, Ricardo Franco-Duarte, Sara C. Silverio, Ligia R. Rodrigues
Summary: In this study, compost samples from three Portuguese companies were analyzed to identify and characterize carbohydrate-active enzymes (CAZymes) and microbial communities. The results showed that the compost samples were rich in glycoside hydrolases (GH), especially cellulases and oligosaccharide-degrading enzymes. The microbiome of the samples was dominated by bacteria, with the classes Gammaproteobacteria, Alphaproteobacteria, and Balneolia being the most abundant. Additionally, comparison with other samples indicated that composting is an excellent source of lignocellulose-degrading enzymes. This is the first comparative study on the abundance and taxonomic/functional profiles of CAZymes in Portuguese compost samples.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2023)
Review
Biochemistry & Molecular Biology
Mariana Buranelo Egea, Josemar Goncalves de Oliveira Filho, Ailton Cesar Lemes
Summary: Metabolic syndrome (MetS) is a complex metabolic condition characterized by a cluster of co-occurring conditions. Studies have shown that the administration of probiotic microorganisms, such as Saccharomyces boulardii, can have beneficial effects on MetS by regulating lipid profiles, modulating intestinal microbiota and gene expression, and reducing weight gain. More experiments, especially using human models, are needed to validate these results, but there is a positive trend towards improvement in MetS and reduction in its risk factors with the administration of S. boulardii.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Food Science & Technology
Bianca Mara Reges, Brenda Novais Santos, Thatyane Vidal Fonteles, Francisca Andrea de Oliveira, Sueli Rodrigues
Summary: This study evaluated the impact of high-intensity ultrasound processing on the complex carbohydrates in acai juice and found that ultrasound processing can promote the production of short-chain fatty acids and increase the richness and diversity of the fecal microbiota, which is beneficial for host health.
Article
Engineering, Chemical
Yunfei Yu, Xue Yang, Chenchen Zhang, Jie Chen, Wei Lin, Jianqiang Meng
Summary: This study reports an environmentally friendly and simple approach for preparing double-network (DN) ion gel membranes with high strength and excellent gas separation performance. By optimizing crosslinking density, mass ratio, and the type and content of free ionic liquid, the mechanical and gas separation properties of the DN membrane are improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Si-qi Jiang, Qiang Gao, Xi-guang Li, Chao-zhu Deng, Jun Qiu, Xiang-nan Zhu
Summary: A dual-strengthening pretreatment method is proposed to remove PVDF more efficiently and enhance the leaching of LiCoO2. Experimental results show that dual-strengthening pretreatment can effectively remove PVDF and significantly improve the leaching efficiency compared to single pretreatment methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zengchi Hu, Xiaoyu Wang, Xiaohui Zhang, Xue Li, Jiangbin Xia
Summary: The rapid fabrication of high-performance composite membranes based on CMPs using simple and low-cost methods is challenging. In this study, three CMPs-based composite membranes were rapidly fabricated with adjustable size using unidirectional diffusion synthesis. The microstructural design enhanced the rejection rates of the membranes and they showed strong hydrolytic resistance, thermal stability, and acid-base resistance. Electrostatic adsorption and the adjustable microstructures significantly varied the repellence of the membranes to different charged molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Farzaneh Rouhani, Matineh Ayedi, Nasser Safari
Summary: Introducing defects into porous metal-organic frameworks is important for improving their adsorption performance. Quasi-MOFs, an underutilized variant of large-scale, fundamentally deficient MOFs, have been found to have substantial amounts of unsaturated metal sites to offset the drawbacks of MOFs. In this study, a quasi-MOF was produced using a water-stable MOF and demonstrated significantly improved phosphate adsorption capability due to the presence of defect sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Valentin Reungoat, Morad Chadni, Louis M. M. Mouterde, Fanny Brunissen, Florent Allais, Helene Ducatel, Irina Ioannou
Summary: This study focuses on the recovery of sinapic acid using liquid-liquid extraction assisted by a hollow fiber membrane contactor from an aqueous feed obtained through the hydrolysis of mustard bran. The screening of solvents of different chemical nature showed that all tested solvents had an extraction efficiency of more than 80% for pH < 5. Four solvents were selected for use in the hollow fiber membrane contactor, and the volatile solvents showed higher mass transfer coefficients compared to non-volatile solvents. The extraction efficiency was intensified by increasing the initial concentration of sinapic acid and the feed-to-solvent ratio. CPME was found to have optimal recovery efficiency at a phase ratio of 8:1, yielding 0.9 g of sinapic acid per liter of CPME used.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Takahiro Sakamoto, Takafumi Hanada, Hayate Sato, Mayu Kamisono, Masahiro Goto
Summary: The emergence of the battery society has led to a high demand for battery metals, resulting in a strain on their supply. This study introduces a novel technique using a hydrophobic deep eutectic solvent (DES) for leaching and recovering battery metals from low-grade nickel laterite ores. The DES enables selective leaching and recovery of the metals, offering a promising pathway for the extraction of critical battery metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Rongrong He, Jiarui Chen, Chunyao Zhang, Dan Lu, Lin Zhang, Tao He
Summary: Researcher has developed a method to quantify the charge density in nanofiltration (NF) membrane separation layer and applied it in NF membranes that can separate Mg2+ and Li+. The results showed that overcompensated amine groups played a major role, and there was a linear relationship between charge density and coating bi-layers or PAH layers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zhijian Zhang, Min Chen, Zhe Lin, Zhichao Yang, Yafeng Du, Zhihui Chen, Zhenhao Yang, Kongyin Zhao, Ligang Lin
Summary: Membrane technology plays an important role in molecular/ion separation processes, but faces challenges such as membrane fouling. This study introduces a new ion-crosslinking method to fabricate copper alginate hydrogel membranes with improved mechanical strength and antimicrobial capabilities. The membranes exhibit excellent separation performance and enhanced long-term molecule/ion separation through improved anti-swelling properties. Molecular dynamics simulations and life cycle analysis highlight the pore structure and environmental friendliness of the hydrogel membranes. These findings provide valuable insights for developing sustainable hydrogel membranes with stable performance and high separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Dongmei Liu, Aiying Guo, Yanling Qi, Zhixin Ji, Hongjuan Li, Zhiwei Zhang, Xinyue Zhang, Kunze Wu, Aijun Cai
Summary: In this study, a stable magnetic Mg/Mn-layered double oxide-doped biochar composite (MgMnLDO-MBC) was prepared and successfully used for the removal of antibiotics and bacteria from wastewater. The composite exhibited enhanced surface areas, adsorption sites, and free radicals, leading to improved catalytic activity. The effects of different factors on the removal efficiency were evaluated, and the composite showed good reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Feng Wang, Zhaoyong Bian, Yaru Zhang, Wenchao Yu, Qiang Zhang, Hui Wang
Summary: In this study, a nanofibrous layered structure of Ff-Ti3C2Tx-Co3O4 was prepared by self-assembling nanofibrous Co3O4 with lamellar fluorine-free MXene (Ff-Ti3C2Tx). The Ff-Ti3C2Tx-Co3O4 exhibited excellent catalytic activity for degradation, resistant to ionic interference, and maintained high removal efficiency of sulfamethoxazole (SMX) in municipal wastewater. The rapid SMX degradation involved fast electron transfer in redox cycles with PMS and the generation of 1O2 via PMS ->center dot O2 -> 1O2. This work provides new insights into antibiotic degradation mechanisms and electron transfer based on PMS activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Weipeng He, Jiacheng Luo, Yujie Wu, Tianhao Luo, Chen Tang
Summary: This study comparatively evaluated the role of cationic, anionic, and nonionic polyacrylamides (PAMs) in ballasted flocculation of clay suspensions under different aluminum sulfate (AS) coagulant dosages. The selection of PAMs and AS dosage had a significant influence on the size and shear resistance of ballasted floc aggregates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Lixian Wang, Lizhi Zhao, Didi Si, Zhixin Li, Huiqin An, Hui Ye, Qingping Xin, Hong Li, Yuzhong Zhang
Summary: Metalloporphyrin-based nanozymes integrated with poly (vinylidene fluoride) membrane show high catalytic activity and reusability for the decolorization of Congo Red dye in continuous flow process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yongfei Ma, Chenyu Zeng, Yongzhen Ding, Jiayi Tang, Ondrej Masek, Zhikang Deng, Rui Mu, Zulin Zhang
Summary: In this study, sludge-derived biochar (SBC) was functionalized with various iron salts to enhance its adsorption ability for sulfamethoxazole (SMX) and magnetic collection performance. Ball milling was further employed to treat the optimal iron salt functionalized SBC (MSBC), resulting in ball milled SBC (BMSBC) with improved adsorption performance for SMX. The dominant driving mechanism for SMX adsorption onto BMSBC was confirmed to be multiple physicochemical forces, including 7C-7C conjugation, pore filling, H-bonding, Fe-O complexation, and electrostatic interactions. BMSBC exhibited favorable adsorption ability for SMX in actual waters and could be easily collected within 1 min due to its magnetic sensitivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jinglin Tan, Xiaohui Mao, Wenjihao Hu, Hongbo Zeng
Summary: This study investigates the influence of PDMS chain architectures on surface properties and reveals that PDMS coatings with looped structures exhibit superior hydrophobicity, self-cleaning, and water sliding compared to coatings with linear structures. Additionally, both looped and linear PDMS coated stainless steel mesh/polyester fibers show efficient separation of oil/water mixture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Wei-Liang Chen, Chih-Chia Cheng, Chien-Hsing Lu, Jem-Kun Chen
Summary: This study designs a novel sandwich-structured capacitor that reduces the absorption time of pollutants using dielectrophoresis force. By coating graphene oxide on polystyrene microspheres as adsorbents and encapsulating them within the capacitor, the adsorption rate is significantly enhanced. Additionally, frequency manipulation allows for the recycling of adsorbents and concentration of dyes, minimizing secondary pollution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)