Article
Energy & Fuels
Nadia D. Gil-Jasso, Edwin A. Giles-Mazon, Gabriela Soriano-Giles, Eric W. Reinheimer, Victor Varela-Guerrero, Maria F. Ballesteros-Rivas
Summary: The recycling of waste expanded polystyrene using flower-based essential oils is a promising environmentally friendly method. Studies have shown that these essential oils are effective and safer alternatives for treating waste expanded polystyrene.
Article
Construction & Building Technology
Elkin Gutierrez-Velasquez, Sergio Neves Monteiro, Henry A. Colorado
Summary: The growth of consumer culture has led to a high rate of waste generation, with expanded polystyrene (EPS) waste being a major problem. This study explores the use of EPS waste, obtained by degrading EPS with acetone and ethyl acetate solvent mixtures, as a potential asphalt adhesive. Tests showed that the dissolved EPS waste exhibited greater mechanical resistance and could be used as an asphalt coating film or adhesive binder.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Construction & Building Technology
Artur Nowoswiat, Pawel Krause, Artur Miros
Summary: The research found that gray polystyrene with the addition of graphite undergoes damage when directly exposed to sunlight, affecting its physical properties. Additionally, with exposure to higher intensity of solar radiation, tensile strength improves but water absorption also increases.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Anupam Pande, Amit Padade
Summary: This study investigates the engineering behavior of a sustainable geomaterial called PAGM, which is made by blending EPS beads, pond ash, and cement. The research analyzes the effects of EPS density, beads content, and cement content on the properties of PAGM. The findings show that low-density and low-content EPS PAGM can achieve similar properties to high-density and high-content EPS PAGM. Design charts are proposed to guide the on-site application of PAGM.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Environmental
Suellen Signer Bartolomei, Felipe Lopes Fonseca da Silva, Esperidiana Augusta Barreto de Moura, Helio Wiebeck
Summary: This study proposes a method for recycling expanded polystyrene using a biodegradable solvent, plastifying it with glycerol, and creating a composite with post-consumer recycled gypsum. The recycled material can be used for manufacturing by 3D printing and for finishing materials for construction. The results show that the recycling process does not degrade the material, and the addition of glycerol and gypsum improves the thermal stability of the composite.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Polymer Science
Antonio Jose Andrade Junior, Clodoaldo Saron
Summary: Packaging is a major contributor to polymer waste worldwide, and improving recycling methods is crucial for environmental sustainability. EPS foam, known for its thermal insulation and energy absorption properties, is commonly used in packaging. However, recycling EPS presents challenges due to its low density and poor properties. Incorporating rubber into recycled EPS can enhance the material's mechanical properties. In this study, EPS waste from electronic products packaging was treated and processed with ground tire rubber (GTR) and a compatibilizer agent to produce compatible and toughened PS/rubber blends. The mechanical, thermal, and rheological properties of the materials were evaluated. The addition of rubber significantly improved the mechanical properties, and the presence of the compatibilizer agent enhanced the compatibility of the PS/rubber blends. This research demonstrates a method for mechanically recycling EPS and rubber tire waste.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Mechanical
Changhong Linghu, Zihao Du, Yi Sun, Weiqiu Chen, K. Jimmy Hsia
Summary: In this study, a mechanics model based on the compliance method was developed to evaluate the shear adhesion strength of fibrillar adhesives across a wide range of aspect ratios. The model was validated through finite element analysis and revealed the different deformation regimes of the adhesive fibrils. Important parameters governing the shear adhesion were identified.
EXTREME MECHANICS LETTERS
(2023)
Article
Construction & Building Technology
Alicia Zaragoza-Benzal, Daniel Ferrandez, Evangelina Atanes-Sanchez, Pablo Saiz
Summary: The recovery of Construction and Demolition Waste (CDW) for its reincorporation into new materials is crucial for fighting environmental pollution and promoting energy savings. This research aims to develop a plaster-based material with dissolved recycled expanded polystyrene as a partial replacement for the binder. The results show that this new material has a homogeneous composition and exhibits low density, high thermal resistance, and excellent plate bending behavior, making it a viable alternative for the production of more sustainable prefabricated plates and panels through circular economy principles.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Maria Ghannoum, Lara Abdelkhalek, Joseph J. Assaad
Summary: This paper evaluates the suitability of finite element modeling based on deterministic and stochastic approaches to predict the shear strength behavior of reinforced concrete beams containing EPS additions. The stochastic method proves to be more suitable in considering the heterogeneity of concrete and the variation in mechanical properties.
Article
Green & Sustainable Science & Technology
Abdulkader El-Mir, Elias Fayad, Joseph J. Assaad, Hilal El-Hassan
Summary: The study examines the effect of mix design parameters on the mechanical properties and durability of semi-lightweight concrete mixtures. The results show that water-to-binder ratio and EPS content are the most influential factors. A multi-response optimization method reveals the optimal mix design for superior performance. Engineers can use this data to predict the mechanical and durability properties of lightweight materials for sustainable construction.
Article
Engineering, Mechanical
Junwon Seo, Ibin Amatya, Todd Letcher, Euiseok Jeong
Summary: This study investigated the strength of adhesive and welded connections for dynamic message signs, revealing that welded specimens have significantly higher strength. Analysis of testing data showed that temperature and width have a significant impact on strength. Practical design equations were found to be more reliable than Response Surface Metamodels for predicting tensile and shear stresses of specimens.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Engineering, Environmental
Luisa Garcia-Barrera, Dafne L. Ortega-Solis, Gabriela Soriano-Giles, Nazario Lopez, Fernando Romero-Romero, Eric Reinheimer, Victor Varela-Guerrero, Maria F. Ballesteros-Rivas
Summary: The objective of this research is to provide a new recycling method for one of the most consumed plastics today. The use of natural esters for the dissolution and recovery of expanded polystyrene waste is found to be a good alternative.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Chemistry, Physical
Sandra Brkanovic, Eva Klaric Sever, Josipa Vukelja, Anja Ivica, Ivana Miletic, Silvana Jukic Krmek
Summary: The study aimed to address the long-term bonding performance of universal adhesives and provide a clinical solution with desirable bond strength to dentin. Three bonding agents were evaluated, and it was found that thermal cycling and adhesive system choice significantly affected the shear bond strength. G2-Bond Universal showed the most desirable bond strength to dentin, even after one year in the oral environment.
Article
Green & Sustainable Science & Technology
Chun Wang, Qianqian Wang, Jintao Yu, Xinmeng Wang, Lijuan Wang, Bin Zhao, Lin Hao, Weihua Liu, Zhi Wang, Hao Chen, Qiuhua Wu
Summary: White pollution caused by the discharge of waste expanded polystyrene (WEPS) is a global issue. This study focused on converting WEPS into high-value hyper-crosslinked polymers (WEPS-HCPs) with excellent adsorption capacity. These HCPs were used to extract aflatoxins (AFs) in grain food, and a magnetic HCP (mWEPS-BCB) was successfully synthesized for fast separation and recovery of the sorbent. The developed method showed promising results in determining trace levels of AFs in grain food.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Materials Science, Multidisciplinary
Thiago R. Martins, Patrick S. Costa, Daniel A. Bertuol, Monica L. Aguiar, Eduardo H. Tanabe
Summary: Recycled expanded polystyrene nanofibers modified by chitosan were successfully developed and applied as adsorbents for lead removal. These nanofibers showed high adsorption capacity and removal percentage, and remained stable after multiple desorption and reuse cycles. The use of these recycled modified nanofibers has significant environmental relevance.
Article
Polymer Science
U. Appala Naidu, Srikanta Dinda
Article
Chemistry, Applied
Appala Naidu Uttaravalli Srikanta Dinda, Pravallika Kalidindi, Karthik Chethan Venkateshan
PROGRESS IN ORGANIC COATINGS
(2016)
Article
Food Science & Technology
N. Annapurna Devi, G. B. Radhika, R. J. Bhargavi
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
(2017)
Article
Chemistry, Applied
Appala Naidu Uttaravalli, Srikanta Dinda
PIGMENT & RESIN TECHNOLOGY
(2018)
Review
Engineering, Environmental
Appala Naidu Uttaravalli, Srikanta Dinda, Bhanu Radhika Gidla
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2020)
Article
Green & Sustainable Science & Technology
Appala Naidu Uttaravalli, Srikanta Dinda, Bhanu Radhika Gidla
Summary: Post-consumer polyvinyl chloride flex banners have a wide range of potential applications and can be reused and recycled for various purposes through appropriate preparation processes. Utilizing these materials can help reduce solid waste accumulation and create a cleaner, greener environment.
INTERNATIONAL JOURNAL OF SUSTAINABLE ENGINEERING
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
Appala Naidu Uttaravalli, Srikanta Dinda
Summary: The study investigated the effects of reaction time, temperature, and catalyst concentration on the self-polymerization reaction of cyclohexanone, observing an increase in reaction rate with longer time, higher temperature, and more catalyst. The kinetic and thermodynamic parameters of the reaction were estimated based on experimental data, indicating an endothermic and non-spontaneous nature of the polymerization reaction.
MATERIALS TODAY-PROCEEDINGS
(2021)
Article
Engineering, Chemical
Appala Naidu Uttaravalli, Srikanta Dinda
INDIAN CHEMICAL ENGINEER
(2020)
Article
Chemistry, Multidisciplinary
Annapurna Nambula Devi, Bhanu Gidla Radhika
IRANIAN JOURNAL OF CHEMISTRY & CHEMICAL ENGINEERING-INTERNATIONAL ENGLISH EDITION
(2018)
Proceedings Paper
Materials Science, Multidisciplinary
Poornima Karthikeyan, Appala Naidu Uttaravalli, Srikanta Dinda
MATERIALS TODAY-PROCEEDINGS
(2018)
Article
Materials Science, Multidisciplinary
Appala Naidu Uttaravalli, Srikanta Dinda
MATERIALS TODAY COMMUNICATIONS
(2017)
Article
Engineering, Environmental
Xingxing Hu, Lingjie Liu, Yanmeng Bi, Lu Li, Chunsheng Qiu, Jingjie Yu, Shaopo Wang
Summary: In this study, the impact of exogenous folate on the start-up process of single-stage partial nitritation-anammox (SPNA) was evaluated using two lab-scale reactors. The results showed that folate addition can enhance nitrogen removal rate, extracellular polymeric substances production, hydrazine oxidase and dehydrogenase activity, as well as the relative abundance of Candidatus Brocadia.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Shaocang He, Tingting Shen, Jing Sun, Haoqi Pan, Chenxu Sun, Tianpeng Li, Runyao Li, Enshan Zhang
Summary: A novel process of acid leaching neutralization was developed for the preparation of inorganic polymeric composite ferric aluminum silicate coagulant (CFAS) using solid waste coal gasification coarse slag (CGCS). The optimized preparation process was determined through single-factor experiment and the performance of CFAS was evaluated for domestic sewage treatment. The results showed that CFAS exhibited excellent coagulation ability and achieved significant removal efficiency for turbidity, ammonia nitrogen, and chemical oxygen demand.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Kinga Szatmari, Sandor Nemeth, Alex Kummer
Summary: In this article, a resilience-based reinforcement learning approach is proposed to address the potential thermal runaway issue in batch reactors. By calculating the resilience metric for reactors and utilizing Deep Q-learning to decide when to intervene in the system, resilient-based mitigation systems can be effectively developed.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Bingyou Jiang, Qi Yao, Mingqing Su, Jingjing Li, Kunlun Lu, Dawei Ding, Han Hong
Summary: This study investigates the inhibitory characteristics and mechanisms of ABC powder on coal powder explosion. The addition of ABC powder significantly decreases the maximum explosion pressure and can completely suppress coal dust explosions. The study also reveals the thermal decomposition characteristics and reaction kinetics of the mixed system.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Kubilay Bayramoglu, Mustafa Nuran
Summary: This study examines the feasibility of using pyrolytic oil from waste tires as fuel in diesel engines, and evaluates its energy, exergy, and sustainability. The results indicate that pyrolytic oil has potential as a renewable fuel source with relatively high thermal efficiency.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Xinru Duan, Yejia Lv, Jiaxing Hong, Jianzhong Wu, Jia Zhang, Yang Yue, Guangren Qian
Summary: This study successfully prepared a tube reactor with optimized catalyst formula, which showed good performance in removing dioxins and other pollutants in the experiments.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Jiaoyang Du, Xueming Dang, Xiaorong Gan, Xin Cui, Huimin Zhao
Summary: In this study, a photocatalyst-enzyme hybrid system was constructed, which solved the issue of enzyme inactivation caused by high concentration of H2O2 through photocatalytic in-situ H2O2 production, and improved the stability and catalytic efficiency of the enzyme. The effectiveness of the system in treating phenolic EDCs was confirmed through experiments.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Fu-Rong Xiu, Longsheng Zhan, Yingying Qi, Xinyue Lei, Jiali Wang, Haipeng Zhou, Wenting Shao
Summary: This study developed a synergetic and high-efficiency treatment of waste tantalum capacitors (WTCs) and polyvinyl chloride (PVC) using subcritical water process. The treatment significantly reduced the temperature and reaction time for metal tantalum recovery from WTCs, and improved the dechlorination efficiency of PVC. The optimized conditions resulted in 100% resin conversion efficiency of WTCs and 97.39% dechlorination efficiency of PVC. The interaction between decomposition products of WTCs and PVC produced a high level of benzoic acid.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Bingda Li, Jiaming Song, Yuting Li, Chaoying Meng, Shuxian Wang, Linghao Zong, Honggang Ye, Yishuai Jing, Feng Teng, Peng Hu, Haibo Fan, Guangde Chen, Xin Zhao
Summary: CdPS3 nanosheets, especially those exfoliated by sodium cholate, have shown highly efficient photocatalytic degradation performance. The strong dark adsorption and dye-sensitized photocatalytic properties of CdPS3 nanosheets contribute to high degradation efficiencies of various pollutants.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Dongxu Ouyang, Yimei Pang, Bo Liu, Zhirong Wang
Summary: This study investigates the thermal runaway features of lithium-ion cells under tunnel conditions, considering different states of charge and tunnel ceilings. The results show that the tunnel visibility is affected by the smoke generated during thermal runaway, and the shape of the tunnel ceiling influences the temperature rise differently.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)