Article
Engineering, Environmental
Yong Ho Yeo, Min A. Gawk, Su Yeon Lee, Young Sik Nam, Won Ho Park
Summary: Rapid urbanization and industrialization have led to increased air pollution, especially in the form of fine dust particles, resulting in various respiratory diseases and social damage. Interest in air purifiers to remove these particulate matter (PM) is growing rapidly. However, dry air purifiers require multiple filters to effectively capture the extremely fine PM, and these filters need to be replaced regularly due to decreased filtration efficiency over time, leading to increased costs and secondary environmental pollution. This study aims to develop a wet air purifier that uses water-based filters, which can effectively remove air contaminants and dissolve odorous substances, such as ammonia gas. The wet air purifying system is designed using super-absorbent polymer (SAP) beads containing high amounts of water. The study investigates the removal efficiencies of different-sized SAP beads for fine dust and odorous substances and examines the reusability of the SAP beads.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Tao Shui, An Li, Michael Chae, Chunbao Charles Xu, David C. Bressler
Summary: Strict bans are in place to prevent the spread of BSE by isolating and disposing of specific risk materials (SRMs) from cattle. However, these bans result in significant costs for rendering companies and environmental burdens. This review focuses on the valorization progress achieved in the conversion of SRM-derived peptides via thermal hydrolysis, introducing potential applications in various industries.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Review
Environmental Sciences
Dimitrios Kalderis, Azam Seifi, Trinh Kieu Trang, Toshiki Tsubota, Ioannis Anastopoulos, Ioannis Manariotis, Ioannis Pashalidis, Alireza Khataee
Summary: This review summarizes recent findings on the application of bamboo-based adsorbents in the removal of organic, inorganic, or gaseous pollutants. It discusses the preparation methods, surface modification methodologies, and effects on the adsorbent properties. The review also evaluates the adsorption capacities, mechanisms, and models for heavy metals, organics, and gaseous substances by bamboo-based adsorbents, and proposes directions for future research.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Fabiana Frota de Albuquerque Landi, Claudia Fabiani, Beatrice Castellani, Franco Cotana, Anna Laura Pisello
Summary: Global waste is expected to significantly increase by 2050, making it crucial to develop effective waste management strategies. Food and green waste account for a significant portion of total waste production, highlighting the importance of processing and reusing materials such as waste cooking oil. This study compares various valorization pathways for waste cooking oil, including biodiesel and direct burning fuel, to their common alternatives, and assesses their environmental impact and energy consumption. The results show that waste cooking oil has lower environmental impact in most cases, particularly as direct burning fuel. However, obstacles such as limited stock and collection difficulties need to be addressed for its widespread usage.
Article
Multidisciplinary Sciences
Elham F. Mohamed, Asmaa El-Mekawy, Sohair A. Sayed Ahmed, Nady A. Fathy
Summary: This study investigated the effectiveness of novel composite adsorbents prepared from modification of activated carbons (ACs) in the removal of air pollutants. The results showed that the SiNP/CNT/AC sample exhibited the best performance among all prepared samples.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Environmental
Hsu-Sheng Tsai, You Wang, Chaoming Liu, Tianqi Wang, Mingxue Huo
Summary: This review systematically introduced the properties of elemental two-dimensional materials beyond graphene and their application in gas sensing. It was found that these materials are effective in detecting carbon-, nitrogen-, and sulfur-based gases, as well as organic vapors. However, the challenge lies in the instability of these materials under atmospheric conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Ji Won Lee, Rak Hyun Jeong, Ikjo Shin, Jin-Hyo Boo
Summary: We synthesized an amorphous Ti-based hydroperoxo complex (ATPC) using a simple method with titanium hydride (TiH2) and H2O2. The synthesized ATPC exhibited excellent photocatalytic properties with fast rates of organic decolorization. The presence of hydroperoxo complexes increased the formation of active radicals, which effectively degraded VOCs in a gas phase. The application of ATPC in an air purifier successfully removed VOCs, and a possible photocatalytic oxidation mechanism was proposed.
Article
Chemistry, Multidisciplinary
T. Rasheed
Summary: This article provides an overview of the latest developments in MXene-based sensor technology and offers a pathway for commercialization. By classifying existing sensors and categorizing different sensing mechanisms, a comprehensive understanding of MXene's applications is achieved. Additionally, the future development of next-generation MXene sensors is predicted, and the implementation of simulated work is discussed.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Environmental Sciences
Yuping Zhao, Sarmad Ahmad Qamar, Mahpara Qamar, Muhammad Bilal, Hafiz M. N. Iqbal
Summary: Biochar is a carbon material with diverse functionalities and excellent physicochemical characteristics, showing high potential in removing harmful organic compounds. It is produced through pyrolysis of renewable feedstocks and applied across different industries. The characteristics and construction of biochar-based materials vary, with the addition of nanoscale reinforcements enhancing their pollutant removal capabilities.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Review
Forestry
Mina Keshvardoostchokami, Flavia Lega Braghiroli, Carmen Mihaela Neculita, Ahmed Koubaa
Summary: Wood-based adsorbents are increasingly used for environmental applications due to their renewable feedstock, simple preparation processes, and advantageous structural and surface properties. This review summarizes recent advances in the preparation and use of modified wood-based residues as adsorbents for water, air, and soil remediation.
CURRENT FORESTRY REPORTS
(2023)
Article
Chemistry, Physical
Xinbo Wang, Li Li, Kai Li, Ruyue Su, Yue Zhao, Song Gao, Wenhan Guo, Zhiqiang Luan, Guojie Liang, Hailing Xi, Ruqiang Zou
Summary: The hierarchically porous metal hydroxide/metal-organic framework composite nanoarchitectures show broad-spectrum removal activity for three chemically distinct toxic gases. The inclusion of M(OH)4 enhances the material's ability for toxic chemical mitigation, with high breakthrough uptake for SO2, NH3, and NO2. Post-breakthrough characterization reveals abundant M-OH groups and unsaturated M (IV) centers, providing extra adsorption sites for irreversible toxic chemical capture.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Environmental
Jonathan Tenorio Vinhal, Rafael Piumatti de Oliveira, Jorge Luis Coleti, Denise Crocce Romano Espinosa
Summary: LED waste contains valuable metals, making the recycling of LED waste important. This study characterized LED models and found variations in metal content and distribution among different models, providing opportunities for future recycling and treatment of LED waste.
Article
Environmental Sciences
Nisar Ali, M. D. Mahamudul Hassan Riead, Muhammad Bilal, Yong Yang, Adnan Khan, Farman Ali, Shafiul Karim, Cao Zhou, Ye Wenjie, Farooq Sher, Hafiz M. N. Iqbal
Summary: Effective separation and remediation of environmentally hazardous pollutants are vital research areas, with magnetic solid-phase extraction (MSPE) technology gaining attention for its strong magnetic domain and ease of separation. Magnetic hybrid nanoscale materials as MSPE sorbents show potential in efficiently treating a variety of environmentally toxic pollutants.
Article
Construction & Building Technology
H. Majdoubi, R. Makhlouf, Y. Haddaji, M. Nadi, S. Mansouri, N. Semllal, M. Oumam, B. Manoun, J. Alami, H. Hannache, Y. Tamraoui
Summary: Phosphogypsum (PG) is a major by-product of the phosphate industry, which limits its wide development. Incorporating PG as a reinforcement agent into geopolymer cement can significantly enhance its mechanical and microstructural properties, contributing to a sustainable geopolymer-PG based circular economy. In this study, geopolymer reinforced PG composites were prepared at different PG contents, and their mechanical properties were tested. The results showed a significant improvement in compressive and flexural strength with the addition of PG, attributed to the crack self-healing mechanism and the high adhesion between PG and the geopolymer matrix.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Environmental Sciences
Regis Waskow, Vinicius Goncalves Maciel, Rejane Tubino, Ana Passuello
Summary: This study compares two different CDW management strategies and finds that the air jig strategy has better environmental performance and quality of recycled materials, reducing the environmental impacts related to its management.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)