Stenotrophomonas maltophilia IMV B-7288, Pseudomonas putida IMV B-7289 and Bacillus megaterium IMV B-7287 - new selected destructors of organochlorine pesticide hexachlorocyclohexane.

Microbial destruction of organochlorine pollutants is the one of the most effective approaches, the safest and promising methods for remediation the environment from pollution. This study presents strains of microorganisms that destroy hexachlorocyclohexane: Stenotrophomonas maltophilia IMV B-7288, Pseudomonas putida IMV B-7289 and Bacillus megaterium IMV B-7287-newly selected destructors of organochlorine pesticide hexachlorocyclohexane. Their advantages and features are considered, namely-exclusively of natural origin-microorganisms are isolated from places of total pollution.

Surface versus Bulk Currents and Ionic Space-Charge Effects in CsPbBr Single Crystals.

CsPbBr single crystals have potential for application in ionizing-radiation detection devices due to their optimal optoelectronic properties. Yet, their mixed ionic-electronic conductivity produces instability and hysteretic artifacts hindering the long-term device operation. Herein, we report an electrical characterization of CsPbBr single crystals operating up to the time scale of hours.

Solar disinfection - An appropriate water treatment method to inactivate faecal bacteria in cold climates.

Solar disinfection (SODIS) is an inexpensive drinking water treatment method applied in tropical and sub-tropical low-income countries. However, it has been unclear whether it functions adequately also in colder climates. To investigate this issue, SODIS experiments were performed in the humid continental climate of Finland by exposing faecally contaminated drinking water to natural solar radiation at different water temperatures (8-23 °C) and UV intensities (12-19 W/m) in polyethylene (PE) bags.

Post-treatment of real municipal wastewater effluents by means of granular activated carbon (GAC) based catalytic processes: A focus on abatement of pharmaceutically active compounds.

Pharmaceutically active compounds (PhACs) widely present in urban wastewater effluents pose a threat to ecosystems in the receiving aquatic environment. In this work, efficiency of granular activated carbon (GAC) - based catalytic processes, namely catalytic wet peroxide oxidation (CWPO), peroxymonosulfate oxidation (PMS/GAC) and peroxydisulfate oxidation (PDS/GAC) at ambient temperature and pressure were studied for removal of 22 PhACs (ng L level) that were present in secondary effluents of real urban wastewater. Concentrations of PhACs were measured using Ultra Performance Liquid Chromatography - Triple Quadrupole Mass Spectrometry (UPLC-QqQ-MS/MS).

A comparison of photolytic, photochemical and photocatalytic processes for disinfection of recirculation aquaculture systems (RAS) streams.

The development of technologically advanced recirculation aquaculture systems (RAS) implies the reuse of water in a high recirculation rate (>90%). One of the most important phases for water management in RAS involves water disinfection in order to avoid proliferation of potential pathogens and related fish diseases. Accordingly, different approaches have been assessed in this study by performing a comparison of photolytic (UV-LEDs) at different wavelengths (λ = 262, 268 and 262 + 268 nm), photochemical (UV-LEDs/HO, UV-LEDs/HSO and UV-LEDs/SO) and photocatalytic (TiO/SiO/UV-LEDs and ZnO/SiO/UV-LEDs) processes for the disinfection of water in RAS streams.