Article
Polymer Science
Konstantin I. Dement'ev, Stanislav P. Bedenko, Yulia D. Minina, Aniya A. Mukusheva, Olga A. Alekseeva, Timur A. Palankoev
Summary: The fast catalytic pyrolysis of polystyrene in hydrocarbon medium over zeolite catalysts was investigated at temperatures of 450-550 degrees C. The study examined the influence of reaction conditions (medium, temperature, vapor residence time, polystyrene concentration) on polymer conversion and product distribution. The results showed high polymer conversion with ethylbenzene, benzene, and toluene as the main products. The highest yield of ethylbenzene (80%) was achieved at 550 degrees C, vapor residence time of 1-2 s, and 10% polystyrene concentration in heavy cycle oil as the medium. The influence of zeolite topology on product distribution was also explored, and a possible mechanism of polystyrene pyrolysis was proposed.
Article
Chemistry, Multidisciplinary
Lucia Quesada, Monica Calero, Maria Angeles Martin-Lara, Antonio Perez, Marco F. Paucar-Sanchez, Gabriel Blazquez
Summary: This study investigated the catalytic pyrolysis of polyethylene film waste to convert it into quality fuel oils. Different catalysts were used and their effects on the properties of the products were analyzed. The results showed that the catalytic pyrolysis products had lower viscosity, good calorific values, and similar physical and chemical properties to conventional fuels compared to products produced without a catalyst.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Analytical
Jiayu Xu, Yuan Guo, Ying Gao, Kezhen Qian, Yinfeng Wang, Na Li, Yuang Wang, Shuai Ran, Xiaoke Hou, Yuezhao Zhu
Summary: In this study, the performance of different zeolites (SAPO18, SAPO11, SAPO34, and SSZ13) for catalytic pyrolysis of cellulose and hemicellulose to generate furans was compared. It was found that SSZ13 significantly improved the selectivity of cellulose and hemicellulose conversion to furans. SAPO11 also showed a positive effect on the conversion of 5-HMF to 5-MFF. The formation of furans was suggested to occur on the external surface of the zeolite, and the difference in mass transfer rates between the inner and outer surfaces of the zeolite contributed to the generation and transfer of furans.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Polymer Science
Amer Inayat, Andrea Fasolini, Francesco Basile, Dagmar Fridrichova, Pavel Lestinsky
Summary: Thermo-catalytic pyrolysis/degradation enables the conversion of waste plastics into valuable chemicals for the chemical and petrochemical industries. The selection of catalysts and operating modes can control the composition of the pyrolysis products. Solid acid catalysts have a significant impact on the composition of the pyrolysis products.
POLYMER DEGRADATION AND STABILITY
(2022)
Review
Agricultural Engineering
Ranjeet Kumar Mishra, Syeda Minnat Chistie, Sneha Ullhas Naika, Kaustubha Mohanty
Summary: This study focuses on investigating the shape selectivity, porosity, structure, and acidity of zeolites and their impact on bio-oil and chemicals production. Pore size, structure, Si/Al ratio, channel structure, and acidity are crucial parameters for aromatics production and deoxygenation reactions. Understanding the properties of zeolites is essential for enhancing the fundamental understanding of pyrolysis.
BIORESOURCE TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Oguzhan Akin, Robin John Varghese, Andreas Eschenbacher, Jogchum Oenema, Mehrdad Seifali Abbas-Abadi, Georgios D. Stefanidis, Kevin M. Van Geem
Summary: The effect of vapor-catalyst contact time and catalyst properties on the recovery of light olefins (C2-C4) from post-consumer mixed polyolefinic waste pyrolysis vapors was studied using five different solid acid catalysts. HZSM-5 with Si/Al ratio of 11 and 27 showed the highest light olefins yields at a very short contact time, while longer contact time decreased olefin yields and increased aromatics production. HZSM-22 was not effective in cracking pyrolysis vapors to C2-C4 olefins at a short contact time, but increasing contact time improved C2-C4 yields without increasing aromatics production, possibly due to its small pore size (shape selectivity). SAPO-34, SAPO-11, and Al-MCM-41 were not selective to light olefins at any studied contact time.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Agricultural Engineering
Shuang Xue, Zhongyang Luo, Haoran Sun, Wanchen Zhu
Summary: In this study, modified bimetallic micro-mesoporous zeolite catalysts were prepared and successfully applied in the process of ex-situ catalytic fast pyrolysis of biomass, leading to an improvement in the quality of liquid fuel. The addition of clay catalysts and the use of a HAP&Zeolite dual catalyst system resulted in a decrease in coke yield. Real-time monitoring showed that the catalytic performance of zeolites began to decrease when the ratio of biomass and catalyst exceeded 1.
BIORESOURCE TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Aleksander A. Tedstone, Abdulrahman Bin Jumah, Edidiong Asuquo, Arthur A. Garforth
Summary: Sulfided nickel catalysts were synthesized for the hydrocracking of mixed polyolefin waste. Application of a single-source precursor method yielded catalytic materials with higher conversion and selectivity compared to wet impregnation.
ROYAL SOCIETY OPEN SCIENCE
(2022)
Article
Energy & Fuels
Salman Raza Naqvi, Asif Hussain Khoja, Imtiaz Ali, Muhammad Naqvi, Tayyaba Noor, Awais Ahmad, Rafael Luque, Nor Aishah Saidina Amin
Summary: This article presents a scientometric analysis of the use of micro-porous zeolites for deoxygenation of biomass-derived bio-oil. The physicochemical properties of catalysts and the degree of deoxygenation are examined. The reaction pathways for different zeolites in bio-oil upgrading are also discussed. The technology readiness level is assessed and future recommendations are provided.
Article
Energy & Fuels
Xiangyu Li, Yongqiang Pang, Zheng Ding, Jian Li, Xingyi Jiang, Yanbo Luo, Hongfei Zhang, Fengpeng Zhu, Yujue Wang
Summary: The study found that mesoporous ZSM-5 and Ga-containing MFI zeolites significantly enhanced the synergistic effect of cellulose and PP for aromatic production during co-feeding catalytic fast pyrolysis. By introducing mesopores in microporous MFI zeolite through alkaline treatment and incorporating Ga, the zeolites showed improved catalytic conversion and dehydrogenation activity, leading to higher aromatic yields and reduced coke formation.
Review
Multidisciplinary Sciences
Sasa Papuga, Milica Djurdjevic, Andrea Ciccioli, Stefano Vecchio Ciprioti
Summary: The latest findings and limitations in catalytic pyrolysis for the processing of plastic waste into valuable fuels are addressed in this review. Catalytic pyrolysis provides better results compared to thermal degradation of plastics, especially in terms of the quality of the obtained liquid hydrocarbon fuel. Various types of catalysts, such as zeolites, fluid catalytic cracking, silica-alumina catalysts, and natural clays, can be used to improve the thermal degradation of plastics. Finding affordable and effective catalysts is crucial for the commercialization of catalytic pyrolysis of plastic waste. This study summarizes the most significant results and investigates the symmetry effects of molecules on the pyrolysis process.
Article
Environmental Sciences
Maria Anna Charitopoulou, Konstantinos G. Kalogiannis, Angelos A. Lappas, Dimitrios S. Achilias
Summary: This paper reviews the existing techniques for recycling plastics from waste electronic and electronic equipment, with a particular focus on catalytic pyrolysis as an environmentally friendly method for producing value-added materials. It also discusses the challenges and trends in recycling plastics containing brominated flame retardants, emphasizing the necessity of pretreatment for debromination. The study highlights the potential of co-pyrolysis and catalytic pyrolysis, along with an emerging technique, microwave-assisted pyrolysis, in enhancing the removal of harmful compounds and producing valuable materials.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Baoyu Liu, Jiajin Huang, Jian Yan, Rongchang Luo
Summary: A novel reaction coordination and diffusion intensification coupling technology was developed to modulate the catalytic performance of the catalysts by tuning the redox properties of zeolites and mitigating the diffusion limitation, improving the utilization efficiency of zeolites in the alkylation of aromatics.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Green & Sustainable Science & Technology
Mohamed Shaker, Vikash Kumar, Christopher M. Saffron, Muhammad Rabnawaz
Summary: Chemical recycling is an effective way to recycle contaminated and mixed plastics waste. This study reports two important discoveries: the use of table salt for the low temperature pyrolysis of mixed polyolefins, which significantly increases oil and gas contents without producing undesirable wax, and the successful pyrolysis of metallized plastics using table salt. These findings suggest that table salt can be a transformative approach for inexpensive and efficient pyrolysis of mixed plastics waste.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Agricultural Engineering
Shaoqing Wang, Zhihe Li, Weiming Yi, Peng Fu, Xueyuan Bai
Summary: This study demonstrates the successful use of a tailored hierarchical zeolite catalyst for the catalytic pyrolysis of corn cob lignin, resulting in the production of value-added aromatic hydrocarbons. The hierarchical zeolite allows for the regulation of aromatic hydrocarbon components, improves catalytic stability, and reduces coke formation. This research is of great importance for practical applications.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Chemistry, Physical
Diego da Silva Bezerra, Rodrigo Jose Franca, Monica Regina da Costa Marques
Summary: This study synthesized new heterogeneous iron-based catalysts supported on biopolymers to evaluate their degradation of Bisphenol A in aqueous solutions. AlgCMC-Fe was considered the best catalyst for promoting total degradation of BPA with high catalytic activity and minimal leaching of iron ions.
Article
Urology & Nephrology
Jessica Machado, Roberta Fontanive Miyahira, Monica Marques, Nathalia Moura-Nunes, Renata Rangel Guimaraes, Lilia Zago, Isabelle Santana, Maurilo Leite Junior, Carla Maria Avesani
Summary: This study developed two non-industrial food products for HD patients, one of which is a protein-enriched muffin with fine herbs. The protein-enriched muffins had higher protein content and lower carbohydrate content compared to the standard formulation and were well-accepted by patients.
JOURNAL OF NEPHROLOGY
(2021)
Article
Food Science & Technology
Julia Rabelo Vaz Matheus, Rebeca Melgaco de Assis, Thiago Ramos Correia, Monica Regina da Costa Marques, Marcia Christina Amorim Moreira Leite, Franciele Maria Pelissari, Roberta Fontanive Miyahira, Ana Elizabeth Cavalcante Fai
Summary: Biodegradable films based on persimmon with glycerol and pectin showed high WVP and WS values, with changes in mechanical properties when glycerol and pectin were added. The films have the potential to be used in vegetable packaging.
FOOD AND BIOPROCESS TECHNOLOGY
(2021)
Article
Energy & Fuels
Andreia Silveira Freire Soares, Ana Maria Furtado de Sousa, Luis Americo Calcada, Claudia Mirian Scheid, Monica Regina Costa Marques
Summary: In this study, drilling fluid formulations were developed using a four-level factorial design to evaluate the effect of drilling fluid components on their rheological properties and in the loss of circulation. The incorporation of LCMs improved the rheological properties of the drilling fluid, with CMC, BT, and HG being the main factors in combating loss of circulation in the fracture and filtration phases. Additionally, the interaction of HG*CMC and BT*CMC was found to be highly significant in preventing loss of circulation.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Biotechnology & Applied Microbiology
Camylle Guimaraes Scheliga, Claudia Maria Luz Lapa Teixeira, Monica Regina da Costa Marques Calderari
Summary: By utilizing the metabolic versatility of microalgae, high concentrations of ammoniacal nitrogen in agro-industrial effluents and livestock wastes can be transformed into valuable products. However, the toxicity of ammoniacal nitrogen to microalgae poses a challenge. In this study, the authors evaluated three strategies, including finding suitable cyanobacteria species, optimizing cultivation conditions, and conducting fed-batch bioprocess. They successfully achieved high removal efficiency of ammoniacal nitrogen and increased production of useful compounds.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2022)
Review
Engineering, Chemical
Ana C. S. Serra, Jonatas V. Milato, Jacyra G. Faillace, Monica R. C. M. Calderari
Summary: Polymeric plastic materials have led to significant advancements in industry, but their production and consumption also generate large amounts of waste, causing severe environmental impact. Pyrolysis processes offer a solution by converting these wastes into valuable fuels and raw materials. The use of catalysts, such as zeolites and clays, enhances selectivity and product distribution, resulting in a more sustainable process. Modifications to the structure of these catalysts further improve performance and reduce the formation of harmful polycyclic aromatic hydrocarbons (PAHs).
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Andreia Silveira Freire Soares, Monica Regina da Costa Marques, Luciana da Cunha Costa
Summary: This work investigates the characterization and leaching studies of pre-salt drill cuttings from offshore oil and gas exploration in ultradeep waters. The highest concentrations of Fe, Al, and Ba were found in the drill cuttings. Non-aqueous fluids contributed to the significant contents of Ba, Al, Fe, Cu, Pb, Mn, Si, and Zn, while aqueous fluids resulted in high concentrations of Ni and Cr. The samples showed different levels of total petroleum hydrocarbons (TPHs) content, and some cutting samples were contaminated with oil. Most samples were contaminated by polycyclic aromatic hydrocarbons (PAHs). Saline and aqueous leachates contained different metals in varying concentrations.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Monick Cruz Nazareth, Monica R. C. Marques, Lara Mesquita Pinheiro, Italo Braga Castro
Summary: Among global efforts facing plastic pollution, the gradual replacement of plastic with alternative materials has become increasingly important. However, consumers' unfamiliarity with biodegradability concepts leads to misguided decisions, while greenwashing practices by stores and manufacturers worsen the situation. Additionally, the lack of certification standards and regulatory frameworks for alternative materials presents challenges for their governance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Plant Sciences
Emiliano Lobo de Godoi, Nayara Pereira Rezende de Sousa, Marcella Ribeiro Marques, Thiago Augusto Mendes
Summary: Brazilian forestry legislation has undergone significant changes in recent decades, which directly impact the country's biomes. A study conducted in the Chapada dos Veadeiros region of Goias found that the enactment of Forest Law No 18,104/2013 led to a decrease in the area of savanna and grassland formation, while the areas covered by planted forests, pastures, and agriculture experienced significant increases.
Article
Environmental Sciences
Raquel A. F. Neves, Agatha Miralha, Tamara B. Guimaraes, Rayane Sorrentino, Monica R. C. Marques Calderari, Luciano N. Santos
Summary: This study aimed to assess sediment contamination by different pollutants in coastal and marine environments at Rio de Janeiro, Brazil. The results showed environmental differences between coastal lagoon and oceanic beaches, mostly influenced by marine waters, while sediment characteristics largely varied among bay's beaches. PAHs and BPA were not detected, but PAEs were found for the first time in the sediments of Rio de Janeiro coast. DEHP was detected in all environments, DBP in coastal lagoon and three marine environments, and DnOP and DINP solely in the coastal lagoon.
MARINE POLLUTION BULLETIN
(2023)
Review
Environmental Sciences
L. C. Costa, C. F. Carvalho, A. S. F. Soares, A. C. P. Souza, E. F. T. Bastos, E. C. B. T. Guimaraes, J. C. Santos, T. Carvalho, V. H. Calderari, L. S. Marinho, M. R. C. Marques
Summary: This work reviews the methods used to characterize drill cuttings and data about their properties. It also highlights the negative impacts of drill cuttings and associated fluids on marine organisms.
MARINE POLLUTION BULLETIN
(2023)
Article
Chemistry, Multidisciplinary
Jean F. F. Cardoso, Ezaine C. C. Torquato, Monica R. C. Marques, Luciana C. Costaa
Summary: This study analyzes the wastewater samples from several pharmaceutical industries in the West Zone of Rio de Janeiro, Brazil, and finds that multiple parameters exceed the limits established in the applicable regulations, including biochemical oxygen demand, chemical oxygen demand, sedimentable solids, total nitrogen, phosphorus concentration, and anionic surfactants.
REVISTA VIRTUAL DE QUIMICA
(2023)
Article
Polymer Science
Alan Kardec da Silva, Ezaine Cristina Correa Torquato, Jacira Aparecida Castanharo, Marcos Antonio da Silva Costa, Monica Regina da Costa Marques, Luciana da Cunha Costa
Summary: This study successfully prepared magnetic polymeric microspheres and investigated their decolorization performance for methyl orange in heterogeneous Fenton processes. The experimental results showed that the composite exhibited high color removal rates under specific conditions and could be reused multiple times.
POLIMEROS-CIENCIA E TECNOLOGIA
(2022)
Article
Chemistry, Multidisciplinary
Taihana Parente Paula, Maria de Fatima Vieira Marques, Monica Regina da Costa Marques, Michelle Souza Oliveira, Sergio Neves Monteiro
Summary: The performance of different zeolite catalysts in the pyrolysis of urban plastic waste was compared, and it was found that alkali-treated ZSM-5/02 catalyst had a higher conversion rate, while MOR/02 catalyst produced a significant amount of light hydrocarbons.
CHEMISTRY-SWITZERLAND
(2022)
Article
Materials Science, Multidisciplinary
Tatiane S. Ribeiro, Ezaine C. C. Torquato, Eliane P. Cipolatti, Martina C. C. Pinto, Evelin A. Manoel, Monica R. C. Marques, Denise M. G. Freire, Jose Carlos Pinto, Luciana C. Costa
Summary: This study investigated the impact of textural properties of supports on the immobilization of lipases and the performance of biocatalysts. The results showed that increasing pore diameters of particles led to higher immobilization yields and the hydrolytic activities of the biocatalysts were influenced by the average pore diameter, porosity, and specific surface area of the supports.
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2022)
