USE OF A BALANCED EFFLUENT FROM THE ANAEROBIC REACTOR FOR ALGAE CHLORELLA VULGARIS GROWTH FOR BIOMASS PRODUCTION

The aim of the study was to determine the possible use of the effluent, produced in the process of the anaerobic decomposition of organic substances, as a medium in the cultivation of microalgae Chlorella vulgaris. The characteristics of efficiency and kinetic of algae growth rate was determined. The scope included balancing of the effluent so as to provide an adequate level of nutrients required for algae growth. The effluent dilutions of 25%, 50%, 75% and 100% was tested. The effluent was supplemented with nutrients to create the same conditions as in the synthetic medium. The tested effluent can be used in the intensive cultivation of biomass of microalgae Chlorella vulgaris. The best results were obtained with the effluent dilution of 75%

LIPID ACCUMULATION OF CHLORELLA VULGARIS UNDER DIFFERENT PHOSPHATE CONCENTRATIONS

The cultivation and utilization of microalgae is now a intensively developing area of research. Some species of microalgae, under appropriate conditions, accumulate large amounts of lipids in the cells. This lipids have a suitable profile of fatty acids for biodiesel production. The culture of microalgae for lipids accumulation should be performed in certain physicochemical conditions. The aim of the study was to determine the effect of variable ortophophates concentrations in the culture medium for lipids accumulation of microalgae Chlorella vulgaris and to determine of parameters of the phosphoric shock in the medium. The study confirmed the possibility of the use of the phosphoric shock in the medium to maximize lipids accumulation by the microalgae Chlorella vulgaris. In the study, 45.23% of the oil was obtained from the biomass from the culture with phosphoric shock in the medium and 18% less of the oil was obtained from the biomass from the standard culture

USE OF A BALANCED EFFLUENT FROM THE ANAEROBIC REACTOR FOR ALGAE CHLORELLA VULGARIS GROWTH FOR BIOMASS PRODUCTION

The aim of the study was to determine the possible use of the effluent, produced in the process of the anaerobic decomposition of organic substances, as a medium in the cultivation of microalgae Chlorella vulgaris. The characteristics of efficiency and kinetic of algae growth rate was determined. The scope included balancing of the effluent so as to provide an adequate level of nutrients required for algae growth. The effluent dilutions of 25%, 50%, 75% and 100% was tested. The effluent was supplemented with nutrients to create the same conditions as in the synthetic medium. The tested effluent can be used in the intensive cultivation of biomass of microalgae Chlorella vulgaris. The best results were obtained with the effluent dilution of 75%

IMPACT OF ATHERMIC PROPERTIES OF THE ELECTROMAGNETIC MICROWAVE RADIATION ON THE PROCESS OF ANAEROBIC DIGESTION OF DAIRY WASTEWATER

The aim of this study was to determine the effect of electromagnetic microwave radiation on the activity of microorganisms during the anaerobic digestion of dairy wastewater. The substrate used in the study was a model dairy wastewater prepared with the use of milk powder. The anaerobic sludge was taken from the anaerobic reactor operated at mesophilic conditions, then it was heated by microwave irradiation (Option 1) or heated in a conventional thermostatic cabinet (Option 2). The study, based on the temperature of the process, was divided into two stages. In the first stage, the temperature of the process was 38°C and in the second stage it was 58°C. The studies showed that the use of microwave electromagnetic field might influence on the biogas production. Furthermore, microwave treatment of anaerobic sludge enhanced the removal of organic compounds in the methane fermentation process

Prevalence of Malnutrition in Patients with Parkinson’s Disease: A Systematic Review

Objectives: This systematic review analyzed the prevalence of malnutrition in patients with Parkinson’s Disease. Study design: a systematic review. Method: Four databases—Cochrane, PubMed, Embase and Web of Science—were searched from October 2021 to June 2022 by two independent researchers. The inclusion criteria were as follows: patients above 18 years old with confirmed Parkinson’s Disease, performed screening nutritional assessment, cohort studies, case-control studies, and cross-sectional studies. Patients without Parkinson’s Disease and with other parkinsonian syndromes were excluded. Results: 49 studies were included in this systematic review. Patients ranged in age from 20 to 96 years. There were 5613 subjects included. According to Mini Nutritional Assessment, 23.9% (n = 634) participants were at risk of malnutrition and 11.1% (n = 294) were malnourished. According to BMI score, most patients were either obese or overweight. Conclusions: the prevalence of malnutrition or risk of malnutrition in the study group was significant. Therefore, more specific and detailed studies on the prevalence of malnutrition in patients with Parkinson’s Disease are needed