Article
Environmental Sciences
Moustapha Harb, Ali Zarei-Baygi, Phillip Wang, Christelle BouNehme Sawaya, L. Daniel McCurry, B. Lauren Stadler, L. Adam Smith
Summary: This study investigated the transformation of antibiotics in anaerobic membrane bioreactor (AnMBR) and identified microbial communities that may facilitate the conversion of sulfamethoxazole and ampicillin. The relative activity of suspended biomass in the system shifted towards syntrophic groups during the experiment, showing notable differences from membrane biofilm communities. The high activity of specific methanogenic, syntrophic, and sulfate-reducing groups in membrane-attached biofilms likely contributes to the biotransformation of antibiotics.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Leticia Yoshie Kochi, Rafael Shinji Akiyama Kitamura, Camila Silva Rocha, Julio Cesar Moreira Brito, Philippe Juneau, Marcelo Pedrosa Gomes
Summary: In this study, the capacity of Lemna minor and Salvinia molesta to remove antibiotics from contaminated water was investigated. It was found that both plants were able to uptake Ciprofloxacin and sulfamethoxazole, with the mixed culture showing better removal efficiency than monoculture. S. molesta exhibited higher uptake capacity for antibiotics. These findings suggest that the use of L. minor and S. molesta in artificial wetlands can enhance the phytoremediation capacity of the systems.
Article
Environmental Sciences
Sara Kamanmalek, Bryan W. Brooks, Jacelyn Rice-Boayue
Summary: Wastewater treatment plants are a significant source of antibiotics and antimicrobial resistance in the aquatic environment. This study evaluated the concentrations of three antibiotics and their corresponding resistance in U.S. streams affected by WWTP discharges and identified potential antibiotic hotspots across the country.
Article
Infectious Diseases
Yibo Zhang, Da He, Fang Chang, Chenyuan Dang, Jie Fu
Summary: This study investigated the environmental effects of two emerging contaminants, sulfamethoxazole (SMX) and erythromycin (ERY), and their mixture on a green microalga R. subcapitata. The results showed that high concentrations of antibiotics affected the algal growth by decreasing chlorophyll content and disrupting the antioxidant system. Different antibiotics had different effects on the antioxidant mechanisms in the alga, suggesting a complex oxidative stress process.
Article
Environmental Sciences
Andrea Visca, Jasmin Rauseo, Francesca Spataro, Luisa Patrolecco, Paola Grenni, Giulia Massini, Valentina Mazzurco Miritana, Anna Barra Caracciolo
Summary: This study investigated the potential contamination of antibiotics and spread of antibiotic resistance genes (ARGs) in agroecosystems through using digestate as biofertilizer, showing that anaerobic digesters in Central Italy had high concentrations of antibiotics, especially during winter and spring. The highest abundances of ARGs were found for the aac-(6')-Ib-cr and sul2 genes, indicating a potential risk of spread of ARGs in soil upon application of digestate.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Biochemistry & Molecular Biology
Marcelo Pedrosa Gomes, Rafael Shinji Akiyama Kitamura, Raizza Zorman Marques, Marcello Locatelli Barbato, Marcel Zamocky
Summary: We investigated the individual and combined contributions of two distinct heme proteins, ascorbate peroxidase (APX) and catalase (CAT), on the tolerance of Lemna minor plants to antibiotics. Our results showed that APX activity was crucial for the plant's tolerance to amoxicillin, while CAT activity played an important role in protecting against oxidative damage caused by ciprofloxacin. Both enzymes were also important for the plant's tolerance to erythromycin. Molecular kinetic approaches to enhance APX and/or CAT scavenging activities could improve the use of L. minor plants for antibiotic reclamation from water bodies.
Article
Plant Sciences
Yuki Tsuzuki, Yusuke Tsukatani, Hisanori Yamakawa, Shigeru Itoh, Yuichi Fujita, Haruki Yamamoto
Summary: A marine cyanobacterium Acaryochloris marina synthesizes a unique chlorophyll called chlorophyll d. This study investigates the effects of light and oxygen on chlorophyll d biosynthesis in A. marina. The findings suggest that A. marina has a light-independent pathway for chlorophyll d biosynthesis and that chlorophyll d degradation occurs under anaerobic and dark conditions.
Article
Chemistry, Multidisciplinary
Surya Akter, Md. Shahinoor Islam, Md. Humayun Kabir, Md. Aftab Ali Shaikh, Md. Abdul Gafur
Summary: UV/TiO2 photodegradation was applied to degrade biopersistent and toxic pharmaceutical ingredients (APIs) sulfamethoxazole (SMX), metronidazole (MNZ), and ciprofloxacin (CIP). The results demonstrate the potential of UV/TiO2 process in effectively degrading these APIs and treating pharmaceutical wastewaters.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Green & Sustainable Science & Technology
Zhenxiao Shang, Feng Qi, Ruimin Mu, Ying Ren, Guixia Ma, Mingshan Yin
Summary: This study screened a mutant strain of Selenastrum capricornutum, named SDEC-2M, which showed high tolerance to high-level CO2 and better growth performance and energy storage compound synthesis under high-level CO2. Furthermore, SDEC-2M exhibited higher photosynthetic efficiency under 15% CO2, providing a new approach for biofuel production and CO2 fixation using microalgae.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2022)
Article
Engineering, Environmental
Johanna Zambrano, Pedro Antonio Garcia-Encina, Felix Hernandez, Ana M. Botero-Coy, Juan J. Jimenez, Ruben Irusta-Mata
Summary: The study demonstrated the high removal efficiency of tetracycline and ciprofloxacin by the S. almeriensis-bacteria consortium, showing potential for biosorption of antibiotics. However, the removal efficiency of sulfadiazine and sulfamethoxazole was relatively low and needs further improvement.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Engineering, Chemical
Hujiabudula Maimaitizi, Abulikemu Abulizi, Dilinuer Talifu, Yalkunjan Tursun
Summary: The synthesis of Chl-Mg/BiOCl photocatalyst through simple methods showed superior performance in CO2 reduction and antibiotic degradation. This study expands the application of organic-inorganic hybrid photocatalysts in solar energy conversion and environmental pollution treatment.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Engineering, Environmental
Guangwei Wu, Luomei Zou, Fuyang Huang, Bin Wang, Sha Huang, Xia Shen, Shu Chen, Jingping Zhu
Summary: The study investigated the factors affecting the photodegradation of sulfonamide and quinolone antibiotics and found that high concentrations of antibiotics impede photodegradation. The pH of the environment also plays a role, with sulfamethoxazole primarily degrading in acidic environments and ciprofloxacin degrading in neutral and alkaline environments. Reactive oxygen species, especially (1)O(2), were identified as the main active species involved in the photodegradation process. The natural organic substances humic acids produced stable and persistent free radicals, which contributed to the photodegradation process.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Biochemistry & Molecular Biology
Mohamed Bizi, Fatima-Ezzahra EL Bachra
Summary: The transport of carbamazepine, ciprofloxacin and sulfamethoxazole in different pores of activated carbon in an aqueous solution is a dynamic process dependent on intrinsic parameters. The experimental kinetic data analysis showed correlations between diffusional parameters and geometrical parameters of the molecules. Modeling required traditional kinetic models and a new model composed of the pseudo first or second order model and a sigmoidal expression, with excellent predictions.
Article
Environmental Sciences
Anna Barra Caracciolo, Andrea Visca, Jasmin Rauseo, Francesca Spataro, Gian Luigi Garbini, Paola Grenni, Livia Mariani, Valentina Mazzurco Miritana, Giulia Massini, Luisa Patrolecco
Summary: This study investigated the degradation and bioaccumulation of selected antibiotics in a soil microcosm experiment, and found that manure and digestate had different impacts on antibiotic behavior. Additionally, the study explored the relationship between resistance genes and microbial community structure.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Maria E. Penafiel, Damian Flores
Summary: This study investigates the adsorption of antibiotic and non-steroidal anti-inflammatory drugs, namely ciprofloxacin (CPX), sulfamethoxazole (SMX), ibuprofen (IBU), and diclofenac (DCF), on sugarcane bagasse in both single- and multi-solute adsorption experiments. The maximum adsorption capacities of CPX, DCF, IBU, and SMX as single components were 0.98, 0.77, 0.61, and 0.51 mg/g, respectively. The presence of CPX did not affect the adsorption of other solutes, while the adsorption of SMX was lower in the presence of competitors. The results suggest that sugarcane bagasse can effectively adsorb drugs in multi-component systems.
