Article
Engineering, Environmental
Esra Bilgin Simsek, Hatice Hande Mert, Meltem Sozbir, Emine Hilal Mert
Summary: The objective of this study is to synthesize macroporous polystyrene-based polyHIPE/nanoclay monoliths and post-functionalize them through sulfonation to improve their structural and textural properties as well as adsorption performances towards bisphenol A. The adsorption mechanism was explored by conducting adsorption tests and using X-ray photoelectron spectroscopy analysis. The synergy between clay embedding and sulfonation resulted in higher BPA removal performance. Experimental parameters and adsorption data fitting were also investigated. The composite adsorbents displayed excellent regeneration and stability until the fifth cycle.
WATER ENVIRONMENT RESEARCH
(2023)
Article
Chemistry, Analytical
Adel Szerlauth, Lilla Szalma, Szabolcs Murath, Szilard Saringer, Gabor Varga, Li Li, Istvan Szilagyi
Summary: The detection and quantification of antioxidant molecules is crucial in various industries such as food science, fine chemical industry, and healthcare. In this study, a low-cost and rapid method for determining the concentration of various molecular antioxidants was developed using the cupric ion reducing antioxidant capacity (CuPRAC) method. The analysis was performed on an alginate-functionalized layered double hydroxide (dLDH) nanosheet immobilized with a cupric complex. The paper-based sensor fabricated with optimized conditions showed superior performance compared to sensors without the dLDH support, with improved detection limits and linearity ranges.
Article
Biochemistry & Molecular Biology
Lincoln Audrew Cordeiro, Aline Krolow Soares, Andre Luiz Missio, Mayara Elita Braz Carneiro, Graciela Ines Bolzon de Muniz, Pedro Henrique Gonzalez de Cademartori
Summary: This study investigates the potential of tannin immobilized on nanofibrillated cellulose as a sustainable alternative for effluent treatment. The results show that tannin leaching can be effectively reduced, and the adsorbent can adsorb Cu (II) within a short period of time.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Review
Environmental Sciences
Vera Analise Schommer, Ana Paula Vanin, Mateus Torres Nazari, Valdecir Ferrari, Aline Dettmer, Luciane Maria Colla, Jeferson Steffanello Piccin
Summary: Heavy metals contamination poses risks to ecosystems and human health. Bioremediation using biochar as a carrier for immobilized bacteria has emerged as an alternative to improve efficiency in environments with high concentrations of heavy metals. Bacillus spp. strains immobilized on biochar can reduce the toxicity and bioavailability of metals through biomineralization, biosorption, bioreduction, bioaccumulation, and adsorption mechanisms. This strategy promotes the reduction of toxicity and accumulation of metals in plants, enhances microbial and enzymatic activity in soil, but may also lead to competition and reduction of microbial diversity, as well as toxic characteristics of biochar. Further studies are needed to optimize this technology and understand its impacts, especially in field-scale applications.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Chemistry, Inorganic & Nuclear
Tianyou Chen, Meishuang Qiu, Yan Peng, Changfeng Yi, Zushun Xu
Summary: Immobilized cooperative catalysts offer economic and environmental advantages, but the immobilization of functional groups may weaken synergistic effects. To overcome this limitation, engineering synergistic effects has become an important direction. In this review, the preparation of immobilized cooperative catalysts is addressed, and various engineering approaches to optimize synergistic effects are discussed.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Engineering, Environmental
Sema Celik, Nurgul Duman, Fatih Sayin, Sibel Tunali Akar, Tamer Akar
Summary: Biosorptive removal using microbial cell-immobilized Platanus orientalis leaf tissue (NSPOL) is an effective method for fast and efficient removal of dye pollution from aquatic environments. The biosorption process is well predicted with the pseudo-second-order kinetic model and the Langmuir isotherm model. The biocomposite exhibits high regeneration efficiency and may serve as a good and economic alternative for reactive azo dye removal.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Biochemistry & Molecular Biology
Hamza Shehzad, Ejaz Ahmed, Ahsan Sharif, Zahoor H. Farooqi, Muhammad Imran Din, Robina Begum, Zhirong Liu, Limin Zhou, Jinbo Ouyang, Ahmad Irfan, Imran Nawaz
Summary: Organic functionalization of sodium alginate was performed to enhance the adsorption efficiency towards Ni(II), resulting in the preparation of efficient MCA-TiO2 composite adsorbents. Optimization of the TiO2 to modified alginate mass ratio was carried out, with a mass ratio of 10.0% showing the highest adsorption efficiency.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Environmental Sciences
Mehrdad Sarkheil, Maryam Ameri, Omid Safari
Summary: This study indicates that immobilized microalgae are a promising approach for water purification in recirculating aquaculture systems, improving the growth and health of fish.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Anchal Rana, Anita Sudhaik, Pankaj Raizada, Van-Huy Nguyen, Changlei Xia, Aftab Aslam Parwaz Khan, Sourbh Thakur, Phuong Nguyen-Tri, Chinh Chien Nguyen, Soo Young Kim, Quyet Van Le, Pardeep Singh
Summary: Floating photocatalysis is an effective technique for wastewater treatment with good photocatalytic activity. The use of g-C3N4-based floating photocatalysts has gained attention due to their unique properties and high performance. Researchers are focused on designing and manufacturing floating nanocomposite photocatalytic materials to achieve efficient pollutant degradation and maximize solar light absorption.
Article
Materials Science, Paper & Wood
Fuangfa Srisuk, Piyawat Chinwatpaiboon, Thanaphat Atjayutpokin, Akarin Boonsombuti, Ancharida Savarajara, Apanee Luengnaruemitchai
Summary: Using pretreated vetiver grass as a carrier for immobilized Clostridium beijerinckii in ABE fermentation showed great potential, with butanol and total ABE concentrations approximately 1.3 times higher than that of the free-cell system. The pretreatment resulted in structural changes of the vetiver grass, increasing crystallinity and surface area. The vetiver grass samples were characterized using various techniques including X-ray diffraction, FTIR spectroscopy, TGA, SEM, and surface area analyses.
Review
Biochemistry & Molecular Biology
Muhammad Bilal, Ehsan Ullah Rashid, Junaid Munawar, Hafiz M. N. Iqbal, Jiandong Cui, Jakub Zdarta, Syed Salman Ashraf, Teofil Jesionowski
Summary: Nanobiocatalysts are an emerging field of nanobiocatalysis that integrates enzyme molecules into multifunctional materials like metal-organic frameworks (MOFs). Among these materials, functionalized magnetic MOFs have gained significant interest as versatile nano-biocatalytic systems for various organic transformations. These systems offer controllable enzyme microenvironments and show promise in enzyme engineering and biocatalytic transformations.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Environmental Sciences
Yujia Xiang, Yuzhou Zhou, Bin Yao, Yuqing Sun, Eakalak Khan, Wei Li, Guihua Zeng, Jian Yang, Yaoyu Zhou
Summary: This study developed vinasse-manganese ferrite biochar-magnetic composites (V-MFB-MCs) for antibiotic removal. The composites showed excellent adsorption capacity and performance in different natural water, highlighting their potential for industrial wastewater treatment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Defeng Yang, Guobin Xu, Yu Duan, Shuai Dong
Summary: A sustainable self-healing technique based on microbial induced calcite precipitate (MICP) is an effective solution to enhance durability and prevent structural failure of cement-based materials. This research demonstrates the use of immobilized bacteria to improve autogenous crack-healing ability, with promising results.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Zeqi Zheng, Weitao Liu, Qixing Zhou, Jiantao Li, Aurang Zeb, Qi Wang, Yuhang Lian, Ruiying Shi, Jianlin Wang
Summary: This study prepared co-modified biochar immobilized laccase named Fe3O4@NaBC@GA@LC and investigated its potential for remediating PAHs-contaminated soil in steel plants. Compared to free laccase treatment, Fe3O4@NaBC@GA@LC retained 60% relative activity after 50 days of incubation at room temperature and nearly 80% relative activity after five reuses. In simulated PAHs-contaminated soil treatment experiments, immobilized laccase exhibited efficient adsorption and degradation capabilities, with a removal rate of over 90% for 5-ring PAHs in 40 days. This study highlights the potential of Fe3O4@NaBC@GA@LC as a promising candidate for PAHs-contaminated soil remediation.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Applied
Pawanpreet Kaur, Harish Kumar Chopra
Summary: In this study, organosilane-modified benzoxazolium-based ionic liquids were synthesized and immobilized on SBA-15 silica support to form supported ionic liquids (SILs). The structure of SILs was determined using various techniques, and their adsorption abilities were tested in the desulfurization of gasoline samples. The SIL adsorbents showed higher efficiency compared to SBA-15 due to interactions between the supported ionic liquids and thiophene compounds.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Materials Science, Composites
Emre Tekay, Nihan Nugay, Turgut Nugay, Sinan Sen
POLYMER COMPOSITES
(2019)
Article
Materials Science, Composites
Emre Tekay, Nihan Nugay, Turgut Nugay, Sinan Sen
JOURNAL OF COMPOSITE MATERIALS
(2019)
Article
Polymer Science
Nihan Nugay, Turgut Nugay, Joseph P. Kennedy
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
(2019)
Article
Materials Science, Composites
Salih Dogu, Emre Tekay, Sinan Sen
JOURNAL OF COMPOSITE MATERIALS
(2020)
Article
Materials Science, Composites
Nazli Arman, Emre Tekay, Sinan Sen
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2020)
Article
Polymer Science
Turgut Nugay, Nihan Nugay, Joseph P. Kennedy
Article
Materials Science, Composites
Emre Tekay
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2020)
Article
Polymer Science
Emre Tekay
Summary: Thermally-triggered shape memory polymers (SMPs) can change shape when exposed to heat. Blending PEO and SIS thermoplastic elastomers resulted in a 60PEO/40SIS blend with the best shape memory performance, showing 95.74% shape fixing and 98.98% shape recovery. The presence of semi-crystalline PEO improved shape fixing, while SIS content enhanced shape recovery capability, despite the immiscibility of these polymers.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Materials Science, Composites
Emre Tekay, Salih Dogu, Sinan Sen
Summary: Polypropylene (PP)/poly(ethylene-co-vinyl acetate) (EVA) nanocomposites were prepared with organophilic halloysite nanotubes (Org-HNTs) and compatibilizers in two steps. Different compatibilizers and masterbatch preparation techniques were studied for their effects on morphology-mechanical property relationship of the composites. EVACO and EVA-g-MA showed better distribution of nanotubes compared to PP-g-MA, leading to higher toughness and impact resistance for the composites with core-shell morphology.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Chemistry, Physical
Emre Tekay, Sinan Sen
Summary: In this study, thermally and electrically triggered polymeric composites were prepared using graphene nanoplatelets as conductive fillers. The results showed that the size of the graphene fillers played a crucial role in shaping memory performance, with larger size fillers aiding in shape fixing and smaller size fillers enhancing shape recovery ability. Additionally, the thermal stability of the composites was significantly improved with the addition of graphene fillers.
Article
Materials Science, Composites
Emre Tekay, Sinan Sen
Summary: The use of EVA-g-MA in the nanocomposites improved the distribution of nanotubes, resulting in better mechanical properties such as tensile modulus and toughness. Among the composites, EVA/EMA-5H exhibited the highest tensile strength, toughness, and tensile modulus compared to neat EVA, along with higher storage modulus values at different temperatures.
JOURNAL OF COMPOSITE MATERIALS
(2022)
Article
Engineering, Multidisciplinary
Emre Tekay
Summary: Thermo-responsive shape memory polymer blends were prepared with varying compositions of COPE and EVA, with the 50% COPE and 50% EVA blend exhibiting the best shape memory properties. Increasing the amount of EVA in the blend resulted in higher shape fixing and shape recovery ratios.
JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY
(2021)
Article
Polymer Science
Emre Tekay