11 documents found, page 1 of 2

Thriving in salty environments: aspergillus niger's halotolerance and BTEX biod...

Benzene, toluene, ethylbenzene, and xylene (BTEX) can be found in marine and estuarine waters due to accidental spills of oil and derivatives, as well as in production water and effluents discharged from petrochemical plants. Addressing the bioremediation of these compounds in saline environments and effluents with elevated salinity levels is imperative. In this study, the halotolerance of Aspergillus niger was...

Workplace wellbeing and quality of life perceived by Portuguese nurses during t...

During the COVID-19 pandemic, nurses were exposed to many stressors, which may have been associated with some mental health problems. However, most of the studies carried out on nurses’ quality of life and workplace wellbeing during the COVID-19 pandemic took a pathogenic approach. Given that current scientific knowledge in this field presented too many gaps to properly inform preventive and therapeutic action,...

Influence of seasonality on the lipid profile of aquaculture oysters from the S...

Oyster culture arose from the need to meet the growing demand for oysters. lhe production of oysters in aquaculture on the Sado and Mira rivers is developed according to traditional and artisanal techniques used for a long time. lhe way in which oysters are handled during the production process strongly influences the final quality of the oysters. ln the rylira river, the Portuguese oyster (Crassostrea angulata...

Bioremediation of petroleum hydrocarbons by fungi of the genus Aspergillus in d...

IoT applied to environmental monitoring in oysters’ farms

Nowadays, the aquaculture of oysters represents an important economical activity in coastal and estuarine areas. It is known that the growth rate of oysters is affected by several water parameters, including temperature, salinity, turbidity, pH and dissolved oxygen. In this paper, a cloud-based platform is proposed to acquire water parameters that affect oysters' growth. The paper includes the hardware and soft...

The effect of chloride ions and organic matter on the photodegradation of aceta...

The photodegradation kinetics of the neonicotinoid insecticide acetamiprid (ACT) was investigated under different conditions of pH, salinity and dissolved organic matter (DOM). Photodegradation of ACT in saline and freshwaters followed pseudo-first-order kinetics. Varying pH from 5 to 9 did not significantly affect the photodegradation rate constants (kp) of ACT. Addition of chloride ions increased significantl...

Metabolite identification of ibuprofen biodegradation by Patulibacter medicamen...

Ibuprofen(IBU)is anon-steroidalanti-inflammatorydrugthatisbecomingincreasinglyrecognizedas an important micropollutant to be monitored in wastewater treatment plants (WWTP), since it has been detected in effluents at the µg L−1 level. The IBU metabolites from biological degradation are not completely understood and can represent a threat to natural aquatic systems. P. medicamentivorans was previously isolated from...

Effect of pH and dissolved organic matter on the photochemical fate of acetamiprid

In this study the effect of pH and dissolved organic matter (DOM) on the photodegradation rate of acetamiprid (ACT) was studied. Observed photodegradation rate constants in the range of 0.0010 – 0.0026 h-1 and 24 – 36 h-1 were obtained using a solar simulator (290-800 nm) and a medium pressure mercury (MP Hg) lamp, respectively. In both experiments an increase in pH from 5 to 9 did not significantly change the ...

Wastewater matrix effect on disinfection with lp/uv and mp/uv radiation

The disinfection of the wastewater effluents is important to reduce the pathogenic microorganism impact in the environment. UV radiation is one of the technologies used for this purposed. The wastewater characteristics, such as dissolved organic compounds or the presence of suspended solids can affect the efficiency of the faecal coliform bacteria removal in the disinfection process by ultraviolet (UV) radiatio...

Photolysis, ozonation and chlorination of flame retardants in water treatment

Flame retardants (FR) are added to different materials to reduce the risk of fire. They save lives, prevent injuries and property losses, and protect the environment by helping to prevent fires. In Western Europe, the average annual growth rate for 2007–2012 for all flame retardant chemicals is expected to be just over 3% in volume terms. The benefits of flame retardants must necessarily be balanced with the ri...