Article
Environmental Sciences
Maria Mihailescu, Adina Negrea, Mihaela Ciopec, Petru Negrea, Narcis Duteanu, Ion Grozav, Paula Svera, Cosmin Vancea, Alina Barbulescu, Cristian Stefan Dumitriu
Summary: The study optimized the gold recovery from residual solutions using Am-L-GA through factorial design experiment. It was found that the initial gold concentration plays a critical role in the adsorption process, while contact time has a slightly positive effect, and pH and temperature do not influence the adsorption capacity.
Article
Computer Science, Interdisciplinary Applications
Mohabbat Amirnejad, Mohammad Rajabi, Roohollah Jamaati
Summary: This study investigates the effect of electrodeposition parameters on the properties of hydroxyapatite coatings. The results show that the deposition voltage has a significant impact on the Ca/P ratio and crystal size of the coatings.
ENGINEERING COMPUTATIONS
(2023)
Article
Chemistry, Analytical
Yanwei Zhao, Shenfu Yuan, Jin Deng, Chun Li, Youneng Feng, Xiaoguang Xie, Na Li
Summary: This study investigated the changes in carbon deposition behavior during biomass pyrolysis volatile fraction reforming process with different catalysts. The experimental results showed that temperature and catalyst type had an impact on product distribution and carbon deposition. Addition of catalysts reduced the formation of heavy oil and increased synthesis gas yield.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Thermodynamics
Shanjian Liu, An Zhao, Zhisen He, Yongjun Li, Dongmei Bi, Xin Gao
Summary: This study investigates the effects of urea concentration and pyrolysis temperature on the composition of bio-oil. The results demonstrate that nitrogen-rich pyrolysis increases the phenolic content, decreases the aldehyde and ketone content, and enhances the production of nitrogenous heterocyclic compounds.
Article
Chemistry, Analytical
Huifen Kang, Xintong Guo, Mei An, Qingjie Guo, Guozhang Chang
Summary: A combination of Ca-Fe and HZSM-5 catalysts was proposed to enhance the yields of aromatic hydrocarbons from pinecone pyrolysis. The performance of the catalysts and the mechanism of enhanced aromatic hydrocarbon generation were investigated. The results showed that the combination of Ca-Fe and HZSM-5 catalysts produced the largest peak area and highest relative content of aromatic hydrocarbons. The introduction of Ca-Fe components increased the yield of aromatics, especially benzene, toluene, ethylbenzene, and xylene.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Engineering, Environmental
Busra Prill, Umitcan Sedir, Sabriye Yusan, Ozge Elmastas Gultekin
Summary: The purpose of this research was to fabricate starch-based magnetic nanobiocomposites and examine the effects of synthesis parameters on the products. The characterization of the materials was conducted using various techniques, and their performance in removing Sr(II) ions from aqueous solutions was investigated. A full factorial experimental design was used to study the parameters affecting biosorption, and optimal conditions were determined through regression analysis. The composition and chemical state of the nanobiocomposites were analyzed using XPS, and adsorption thermodynamics were calculated.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Chemistry, Applied
Mourad Boukachabia, Hacene Bendjeffal, Mounia Merabet Khelassi, Olivier Riant
Summary: A statistical approach was used to optimize the acylation of l-menthol using natural kaolin as a catalyst. The main operational parameters, such as solvent volume, acyl donor amount, temperature, and catalytic rate of kaolin, were studied. The results showed that temperature, acyl donor/acceptor ratio, kaolin mass, and solvent volume were significant factors affecting the acylation process. Optimal reaction conditions were determined and validated experimentally, achieving complete conversion after 30 minutes. The environmentally friendly process was also applied to other monoterpenic alcohols, yielding acetates with 45%-90% yield.
FLAVOUR AND FRAGRANCE JOURNAL
(2023)
Article
Biochemical Research Methods
Carlos A. Hernandez, Maylin Perez-Bernal, Daymi Abreu, Onel Valdivia, Magali Delgado, Dayami Dorta, Andy G. Dominguez, Enrique R. Perez, Jose M. Sanchez-Rios
Summary: A quantitative sandwich ELISA was optimized using a full factorial design of experiments (DOE) and a preliminary protocol obtained by the method of one factor at a time (OFAT). The specificity, lower limit of quantification, quantification range, and analytical sensitivity of the optimized ELISA were compared to those of the preliminary protocol. The optimized ELISA showed a 20-fold increase in analytical sensitivity and a lower limit of antigen quantification reduced from 156.25 to 9.766 ng/mL.
ANALYTICAL BIOCHEMISTRY
(2023)
Article
Food Science & Technology
Seda Cilingir, Guelseven Duran, Beritan Goekyildiz, Ali Goksu, Serdal Sabanci, Mutlu Cevik
Summary: This study optimized the pectin extraction process from lemon peel powder samples using the ohmic heating-assisted extraction method. The results provide important information for the design of industrial scale ohmic heating units in pectin production.
FOOD AND BIOPROCESS TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Chen Chen, Zhaobing Shen, Yaping Zhu, Fan Wang, Biao Jiang, Huimin Qi
Summary: Dehydrochlorination of 1,2-dichloroethane (1,2-DCE) is an important industrial process for producing vinyl chloride monomer (VCM), but faces challenges of high temperature and low efficiency. A novel controllable B3N3 doped activated carbon (B,N-ACs) synthesized using B3N3-containing arylacetylene resin shows excellent catalytic performance, with high conversion of 1,2-DCE and VCM selectivity, making it a promising catalyst for green chemical processes.
Article
Polymer Science
Martina Miloloza, Sime Ukic, Matija Cvetnic, Tomislav Bolanca, Dajana Kucic Grgic
Summary: Microplastics are a global environmental problem, and their biodegradation is an effective solution. This study investigates the optimal conditions for the biodegradation of microplastics by two bacteria and analyzes the process in detail.
Article
Engineering, Environmental
Chaymae Haddaji, Karima Ennaciri, Anas Driouich, Khalid Digua, Salah Souabi
Summary: In this study, a full factorial design was used to investigate the effect of various variables on turbidity and COD removal in vegetable oil refineries wastewater treatment. The results showed that coagulation-flocculation was effective for turbidity removal regardless of the pollutant load. Under optimal conditions, high turbidity and COD removal efficiencies were achieved. The study suggests that physical pretreatment is a promising option for efficient coagulation-flocculation.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Energy & Fuels
Yanpeng Ban, Lijun Jin, Jialong Zhu, Fanggang Liu, Haoquan Hu
Summary: This study investigated the catalytic effects of Ca(OH)2 on the pyrolysis of coal and found that the addition of calcium promoted gas and water release, reduced the yields of char and tar, and affected the composition and distribution of pyrolysis products. The results demonstrated that calcium species could change the thermal reaction process of oxygen-containing functional groups in coal, thereby regulating the distribution of pyrolysis products.
Review
Chemistry, Analytical
Guanyi Chen, Muhammad Zohaib Farooq, Bingyan Sun, Fawei Lin, BeiBei Yan, Gulzeb Rajput, Muhammad Chawla
Summary: Waste tire rubber can be reduced in volume and converted into fuel through pyrolysis technology, but it generates various pollutants. Process parameters such as temperature and heating rate affect the formation of pollutants.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Construction & Building Technology
Djassou Adjoavi Colette, Adjoumani Yao Joseph, Yao Kouassi Benjamin, Drogui Allali Patrick
Summary: The purpose of this study was to optimize the treatment conditions of rubber aggregates using a full factorial design. The results showed that NaOH concentration and treatment duration, as well as the interaction between NaOH treatment duration and devulcanization, significantly influenced the compressive strength of rubberized concrete. The optimal treatment conditions were 10% NaOH concentration, 60 min NaOH treatment duration, and 30 s devulcanization, resulting in a 12.11% increase in compressive strength compared with concretes incorporating untreated rubber aggregates.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Analytical
Guanshuai Zhang, Shanjian Liu, Dongmei Bi, Zhisen He, Jia Liu, Yinjiao Liu
Summary: Hydrogen peroxide pretreatment was applied for fast pyrolysis of corn stalks, and it was found that the pretreatment effectively promoted lignin depolymerization and decreased the reaction activation energy. The pretreatment also increased the cellulose content and removed alkali and alkaline earth metals from the biomass. The pH of the hydrogen peroxide solution affected the removal of lignin and ash by the pretreatment, and the composition of bio-oil changed significantly, with a significant increase in the relative content of levoglucosan after pretreatment.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2024)