Article
Environmental Sciences
Junmao Zhang, Wenqing Huang, Dongxu Yang, Junling Xiang, Yi Chen
Summary: This study synthesized LDH/BCs for the removal of phosphorus from wastewater and its application as fertilizers. The results showed that LDH/BCs effectively removed phosphorus and stimulated crop growth when used as fertilizers.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Engineering, Environmental
Leila Roshanfekr Rad, Mansoor Anbia
Summary: This review summarizes the recent studies on the capability of zeolite-based composites for adsorbing toxic matters from water sources, including the adsorption mechanisms and comparisons between composites and raw zeolites.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Xiaolan Zeng, Shuang Shu, Yu Meng, Hongjun Wang, Yan Wang
Summary: The g-C3N4/Cu, N-TiO2 heterojunction photocatalysts were successfully prepared and characterized in this study. The synthesized photocatalyst exhibited excellent degradation performance for sulfamethazine (SMZ) under simulated sunlight irradiation. This research is of great importance for the elimination of sulfonamide antibiotics from wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Shuang Shu, Hongjun Wang, Xinyan Guo, Yan Wang, Xiaolan Zeng
Summary: A novel Cu-CuxO/TiO2 composite photocatalyst was synthesized using sol-gel and impregnation methods. The as-synthesized photocatalysts were characterized for morphology, crystalline structure, optical properties, and surface composition. The Cu-CuxO/TiO2 composite showed superior properties compared to pure TiO2 and Cu-CuxO composite. The CT9 composite with a molar ratio of Cu(CH3COO)2 to TiO2 of 9:1 exhibited the best photocatalytic performance, degrading 98.2% of the pollutant SMZ after 60 min of irradiation. The research also identified intermediates for SMZ degradation and predicted their biotoxicity using LC-MS and ECOSAR models, respectively.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Applied
Roberto Fiorenza, Chiara Contarino, Vanessa Spano, Maria Teresa Armeli Iapichino, Stefano Andrea Balsamo
Summary: Two multi catalytic approaches, thermo-assisted solar photocatalysis and solar photoassisted thermocatalysis, were investigated to convert CO2 into valuable products. Thermo-assisted solar photocatalysis achieved a high CO2 conversion rate with the best sample showing 65% CO2 conversion and the formation of CO and CH4. Solar photoassisted thermocatalysis using Pd-Ni/TiO2 decreased the activation energy and increased the CO2/CH4 conversion at lower temperature, showing potential for the formation of solar fuels from CO2.
Article
Environmental Sciences
Javad Shahbazi, Esmaeil Fatehifar, Mohammad Daryani, Naeimeh Jodeiri, Asadollah Karimi
Summary: This study aims to use 4A zeolite adsorbent for the adsorption of lead and arsenic from wet-process phosphoric acid. The results indicate that the adsorption process of heavy metals is significantly influenced by the pH of the solution, the heavy metals concentration, and the adsorbent dosage. Using the Taguchi method, a 99% reduction in both pollutant concentrations was achieved by the adsorption process.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Environmental Sciences
Zahra Razavi, Nourollah Mirghaffari, Mohsen Soleimani
Summary: Efficient removal of CO2 can be achieved using synthetic and natural zeolite as a photocatalyst support under solar irradiation. The performance of CO2 photocatalytic removal is enhanced by increased sunlight irradiation. The CO2 adsorption rate of TiO2-Ze and TiO2-Cp composites increased to 61.8% and 78.9% respectively.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Nikolaos Philippidis, Eleni Pavlidou, Sotiris Sotiropoulos, Petros Kokkinos, Dionissios Mantzavinos, Ioannis Poulios
Summary: This study explored the photoelectrocatalytic degradation and mineralization of sulfamethazine (SMT) in aqueous solution. The TiO2 film electrodes on Ti substrates were used as working electrodes (TiO2/Ti) and were analyzed by SEM and XRD. The PEC efficiency of the TiO2/Ti electrodes in the oxidation of SMT was evaluated under different experimental conditions, and the degradation followed the Langmuir-Hinshelwood (L-H) kinetic model.
Article
Engineering, Chemical
Mingyan Fu, Bas Heijman, Jan Peter van der Hoek
Summary: Adsorption by granular zeolites and regenerating exhausted zeolites by gaseous ozone is an effective treatment technology for removing organic micropollutants from wastewater. In this study, the zeolite fixed-bed column achieved removal efficiencies between 70% and 100% for eight organic micropollutants, with less favorable removal for two other compounds. Increasing the pre-backwash duration reduced ozone consumption during regeneration.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Agricultural Engineering
L. Lopez-Rosales, P. Lopez-Garcia, M. A. Benyachou, A. Molina-Miras, J. J. Gallardo-Rodriguez, M. C. Ceron-Garcia, A. Sanchez Miron, F. Garcia-Camacho
Summary: This study demonstrates for the first time that the low tolerance of marine microalgae to ammonium and hyposalinity can be overcome by introducing a zeolite-based adsorption step in urban wastewater treatment. The maximum ammonium adsorption capacities of the natural zeolite used in this study are among the highest reported. The microalgae grows satisfactorily in mixtures of zeolite-treated urban wastewater and seawater, and a proof of concept experiment shows an enhanced biomass yield with no noticeable effect on the production of specialty metabolites.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Chemical
Tao Yin, Xuan Meng, Sitan Wang, Xiaoyu Yao, Naiwang Liu, Li Shi
Summary: In this study, metal-oxide nanoparticles were efficiently loaded on NaY zeolite using the evaporation induced self-assembly (EISA) method to enhance adsorption capacity for VOCs. Among the different composites tested, Y@CoO showed optimal adsorption performance for isopropanol and acetone, while Y@MnO2 exhibited the best adsorption capacity for toluene. The chemisorption of metal-oxides with VOCs oxygen functional groups significantly improved the adsorption capacity, suggesting a new approach for developing advanced adsorbents for VOCs.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Shuyi Yu, Xiaoyu Wang, Fang Liu, Kunkun Xiao, Chunli Kang
Summary: This study prepared hierarchical porous composites using natural diatomite and beta zeolite, and evaluated their adsorption capacity. The results demonstrated that the composite had superior adsorption capacities due to its suitable micropore size and chemical adsorption.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Sonali Puri, Anoop Verma
Summary: In this study, a concurrent fixed-bed dual technology was used to remove color from tertiary treated agro-based paper & pulp industry effluent. The prepared Fe-TiO2 composite showed great potential as a durable and efficient catalyst, with 5-10% activity reduction after 50 recycles. The dual process of photocatalysis and photo-Fenton exhibited high color removal efficiency, and the optimal conditions were identified through process optimization. The findings suggest that this innovative technology can be a promising tertiary treatment option for industrial wastewater treatment systems.
Article
Chemistry, Multidisciplinary
Ximena Jaramillo-Fierro, Silvia Gonzalez, Fernando Montesdeoca-Mendoza, Francesc Medina
Summary: In this study, zeolites prepared by sol-gel method from two Ecuadorian clays were combined with a semiconductor to effectively remove water contaminants. Characterization of the synthesized compounds showed that composites derived from G-Clay had higher average adsorption capacity. The results suggest that the synthesized composites have potential for removing cationic dyes from wastewater.
Article
Engineering, Environmental
Weilu Yang, Mingshan Zhu, Wanbin Li, Guoqiang Liu, Eddy Y. Zeng
Summary: In this study, flexible nanocatalysts with self-regulated metal oxide nanoparticles were synthesized for efficient removal of plasticizers from wastewater. The nanocatalysts showed higher decay kinetics for plasticizers compared to other systems, while also reducing the disposal cost.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Biotechnology & Applied Microbiology
Sijing Jia, Xiaoqiang Chen, Toshikazu Suenaga, Akihiko Terada, Susumu Ishikawa, Fumitake Nishimura, Shaolan Ding, Taku Fujiwara
JOURNAL OF BIOSCIENCE AND BIOENGINEERING
(2019)
Review
Environmental Sciences
Qun Xiang, Youhei Nomura, Shuji Fukahori, Tadao Mizuno, Hiroaki Tanaka, Taku Fujiwara
CURRENT POLLUTION REPORTS
(2019)
Article
Engineering, Environmental
Youhei Nomura, Shuji Fukahori, Taku Fujiwara
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Engineering, Environmental
Youhei Nomura, Shuji Fukahori, Taku Fujiwara
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Engineering, Environmental
Youhei Nomura, Shuji Fukahori, Taku Fujiwara
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2020)
Article
Agronomy
Daisuke Kozaki, Yuki Sago, Taku Fujiwara, Masanobu Mori, Chihiro Kubono, Tougo Koga, Yuta Mitsui, Tomotaka Tachibana
Summary: A new IEC/CEC method was developed in this study for the simultaneous determination of multiple anions and cations in fertilizer solution samples, achieving higher resolution of inorganic anions and cations with phosphate ion. This method helps understand the behavior of ionic nutrients in fertilizer solution during hydroponic cultivation and may be useful for individual fertilization of ionic nutrients.
Article
Chemistry, Analytical
Daisuke Kozaki, Souma Tanihata, Yuki Sago, Taku Fujiwara, Masanobu Mori, Atushi Yamamoto
Summary: The technical note demonstrates the utilization of a conductivity cell electrode (CCE) as an ion chromatography (IC) detector, replacing the expensive conductivity detector (CD) in conventional IC systems. The IC-CCE system showed comparable peak resolution, detection sensitivity, and separation effectiveness, proving its potential for cost reduction in IC applications. In a study involving natural mineral water samples, the IC-CCE system successfully separated inorganic anions and cations with good agreement between CCE and CD monitored values.
ANALYTICAL METHODS
(2022)
Article
Plant Sciences
Thanuja Deepani Panangala Liyanage, Morihiro Maeda, Hiroaki Somura, Nguyen Thi Thu Thuong, Makito Mori, Taku Fujiwara
Summary: This study found that different types of compost can have an impact on nitrous oxide and carbon dioxide emissions in soil, with compost high in ammonia nitrogen and low C/N ratio increasing N2O emissions, while soil rich in organic carbon, mineral nitrogen, and clay also leads to higher emission of gases.
SOIL SCIENCE AND PLANT NUTRITION
(2022)
Article
Plant Sciences
Thanuja Deepani Panangala Liyanage, Morihiro Maeda, Hiroaki Somura, Makito Mori, Taku Fujiwara
Summary: This study investigated the effects of different application rates of NH4+-N on N2O and CO2 emissions from compost-amended soil, and analyzed the relative abundances of narG and nosZ genes. The results showed that an NH4+-N rate of 400 can suppress N2O and CO2 emissions from compost-amended soil under aerobic conditions.
SOIL SCIENCE AND PLANT NUTRITION
(2022)
Article
Engineering, Environmental
Youhei Nomura, Koutaro Koga, Kouhei Ohnishi, Shuji Fukahori, Taku Fujiwara
Summary: A rotating advanced oxidation contactor (RAOC) equipped with TiO2/zeolite composite sheets was developed to efficiently inactivate plant pathogenic bacterium Ralstonia solanacearum in drainage solution (DS) from a hydroponic system. Compared with a submerged composite sheet photocatalysis reactor (SSPR), the RAOC exhibited higher inactivation efficiency regardless of the initial number of living bacteria, showcasing its potential as a promising and scalable photocatalytic reactor for treating R. solanacearum contamination in DS.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Editorial Material
Biotechnology & Applied Microbiology
Veeriah Jegatheesan, Li Shu, Taku Fujiwara, Edita Baltrenaite-Gediene
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Editorial Material
Engineering, Environmental
Ho Kyong Shon, Veeriah Jegatheesan, Sherub Phuntsho, Taku Fujiwara, Yunchul Woo, Binghua Yan
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Engineering, Environmental
Kohei Kawaguchi, Taira Hidaka, Taku Fujiwara
Summary: Measurement of dissolved ozone concentration is crucial for ozone treatment. A conventional indigo method is commonly used, but it becomes difficult when water contains substances that react with C-C double bonds other than ozone. To address this concern, we developed a breakthrough method to measure ozone concentration by measuring the p-formylbenzoic acid (p-FBA) produced after the reaction of p-vinylbenzoic acid and ozone. Our new method contributes to extensive ozone treatment and ozonation management.
Article
Engineering, Environmental
Xinyi Zhou, Taku Fujiwara, Taira Hidaka, Fumitake Nishimura, Tomohiro Nakanishi, Akihiko Terada, Tomoyuki Hori
Summary: In this study, a microaerobic activated sludge process (MAS) was proposed as a pretreatment method to retain NH4-N from high-strength nitrogenous wastewater. The MAS systems achieved high NH4-N retention rates and TOC removal rates. The emissions of CO2 and N2O during MAS were evaluated, and the mechanisms of N2O emission from each reactor were investigated. The study highlighted the importance of N2O mitigation in the MAS process, especially under acidic conditions.
Meeting Abstract
Chemistry, Multidisciplinary
Youhei Nomura, Shuji Fukahori, Taku Fujiwara
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2018)
