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Toxicological and mechanistic insights into organic contaminants released from on-line membrane cleaning during ultrafiltration of algal-containing waters.
J Hazard Mater
December 2024
State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, China. Electronic address:
Eutrophication has significantly challenged the treatment of algae-contaminated water. Ultrafiltration has become an essential method for water purification, though frequent on-line chemical cleaning is necessary to maintain membrane permeability. This study aims to systematically investigate the impact of various chemical cleaning agents on the release of dissolved organic matters and toxic by-products, particularly from algal cells.
View Article and Find Full Text PDFA multi-technique analytical approach to support (eco)toxicological investigation of zinc oxide nanoparticles.
J Chromatogr A
October 2024
CNR-ISSMC- Institute of Science, Technology and Sustainability for Ceramics (ISSMC), Via Granarolo 64, I-48018, Faenza, RA, Italy. Electronic address:
Article Synopsis
- Understanding how nanoparticles behave in biological environments is essential for creating safer materials, as factors like toxic metal ion release can lead to harmful effects.
- The study used two Field-Flow Fractionation techniques to analyze the solubility of zinc oxide (ZnO) nanoparticles, discovering that at high concentrations, the stability of nanoparticles is fairly consistent regardless of the separation method, while at lower concentrations, different methods yield varying results.
- Additionally, the research examined how exposure to fresh water affects the toxicity of both fresh and aged ZnO nanoparticles, finding that the toxic effects are influenced by time, dose, and the age of the nanoparticles, with aged samples generally being less toxic.
Spectroscopic insights into multi-phase protein crystallization in complex lysate using Raman spectroscopy and a particle-free bypass.
Front Bioeng Biotechnol
May 2024
Institute of Process Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany.
Protein crystallization as opposed to well-established chromatography processes has the benefits to reduce production costs while reaching a comparable high purity. However, monitoring crystallization processes remains a challenge as the produced crystals may interfere with analytical measurements. Especially for capturing proteins from complex feedstock containing various impurities, establishing reliable process analytical technology (PAT) to monitor protein crystallization processes can be complicated.
View Article and Find Full Text PDFOnline monitoring system for qualitative and quantitative analysis of bioaerosols by combined ATP bioluminescence assay with loop-mediated isothermal amplification.
Sci Total Environ
August 2024
Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong Engineering Technology Research Center for Photocatalytic Technology Integration and Equipment, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
Rapid detection of airborne pathogens is crucial in preventing respiratory infections and allergies. However, technologies aiming to real-time analysis of microorganisms in air remain limited due to the sparse and complex nature of bioaerosols. Here, we introduced an online bioaerosol monitoring system (OBMS) comprised of integrated units including a rotatable stainless-steel sintered filter-based sampler, a lysis unit for extracting adenosine triphosphate (ATP), and a single photon detector-based fluorescence unit.
View Article and Find Full Text PDFScattered and transmitted light as surrogates for activated carbon residual in advanced wastewater treatment processes: Investigating the influence of particle size.
Water Res X
May 2024
Department of Civil and Environmental Engineering Sciences, Institute IWAR, Chair of Water and Environmental Biotechnology, Technical University of Darmstadt, Germany.
The use of powdered activated carbon (PAC) is a common process in advanced wastewater treatment to remove micropollutants. Retention and separation of PAC is essential as PAC loaded with micropollutants should not be released into the environment. Determining the activated carbon (AC) residual in the effluent poses a challenge, as there is currently no on-line measurement method.
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