EGC 2023 Conference Announcement

Motivated by the importance and necessity of applying multidisciplinary and connecting all scientific disciplines in the field of environmental protection, the International Association of Scientists and Experts for Environmental Protection (IAESP) and the Faculty of Food Technology Osijek with the support of partner institutions, organizes the 1st European GREEN Conference, which will be held from 23 to 26 May 2023 in Vodice, Croatia

8th International Scientific and Professional Conference WATER FOR ALL

ANNOUNCEMEN

Various techniques for phenolic removal from olive mill wastewater

As the world\u27s population increases, so does the amount of wastewater generated during agricultural activities. Inadequate wastewater management can be the cause of sea and river pollution. However, wastewater can be a potential source of biologically active components that can be obtained via physicochemical, biological, thermochemical or combined treatments. Olive mill wastewater is produced in huge quantities around the world during the production of olive oil. This waste is harmful to the ecological system due to the high content of phenolic components that can be recovered by different methods whereby this waste also gains economic value. This review describes several methods that can be used in phenol removal or isolation from olive mill wastewater

NITRATES AND NITRITES, METABOLISM AND TOXICITY

Nitrati i nitriti su kemijski spojevi koji se koriste kao gnojivo, rodenticidi ili konzervansi. Mogu se naći u zraku, tlu, vodi ili hrani (posebice povrću) a mogu se i stvarati u ljudskom tijelu. Nitrati imaju važnu ulogu u hranjenju i metabolizmu biljaka. Nastaju oksidacijom organskog otpada djelovanjem dušičnih bakterija. Ljudi mogu biti izloženi nitratima i nitritima preko konzumacije povrća i mesnih prerađevina, a manjim dijelom preko vode ili ostale hrane. Pijenje vode sa većom koncentracijom nitrata može djelovati na ljudsko tijelo na dva načina: (i) akutno, što se najčešće manifestira methemoglobinemijom (nitrati u probavnom sustavu se reduciraju u nitrite koji potom oksidiraju željezo u hemoglobinu crvenih krvnih stanica stvarajući methemoglobin koji nije sposoban prenositi kisik po tijelu), a koja se manifestira pojavom plave boje kožw, i (ii) kronično, što se manifestira pojavom karcinoma kao rezultata izloženosti nitrozaminima (koji nastaju tijekom reakcije nitrata sa aminima u tijelu).Nitrates naturally occur in the environment and are involved in the nitrogen cycle. Nitrates and nitrites are chemical compounds used in fertilizers, rodenticides and as food preservatives. They can be found in the air, soil, water and food (especially in vegetables) and can be synthesized in the human body. Nitrates play a significant role in the diet and metabolism of plants. Nitrates are formed by oxidation of organic waste by the action of nitrogen-binding bacteria. Humans are exposed to nitrates and nitrites via consumption of vegetables and processed meat products, and to a lesser extent via water and other food. Consumption of drinking water with an increased concentration of nitrate may affect the human body in two ways: (i) acutely, most often manifested as methemoglobinemia (where nitrates in the digestive system are reduced to nitrites, which then oxidize iron in the hemoglobin of the red blood cells forming methemoglobin unable to transmit oxygen in the body), resulting in blue skin, and (ii) chronic, manifested by the occurrence of cancer as a result of organism exposure to nitrosamines (formed during the reaction of nitrates with amines in the body)

PROJECT MENAGEMENT OF WASTE WATER TREATMENT PLANT IN THE KNEŽEVI VINOGRADI

U radu je prikazana struktura projekta izgradnje uređaja za pročišćavanje otpadnih komunalnih voda u Kneževim Vinogradima, kapaciteta 2500 ES, „SBR“ tehnologijom. Struktura projekta prikazana je kroz tri faze projekta: koncipiranje, definiranje i izvođenje, uz povezivanje vremena i troškova projekta.This paper presents the architecture of the project construction of waste water treatment plant in Kneževi Vinogradi 2500 population equivalent by „SBR“ purification technology principle. Architecture of the project is displayed through three stages: conception, defining and realization where are made link between timeline and project costs

Arsenic in Eastern Croatia – problems and solutions

Groundwater in Eastern Croatia contains elevated concentrations of inorganic arsenic. The biggest well field in the area has an average arsenic concentration of 200 μg/L and it supplies the population of around 200,000 people with drinking water. Croatian Regulation has adopted guidelines from the European Council Directive for the maximum concentration limit (MCL) of 10 μg/L of As in drinking water. However, it has been estimated that almost 120,000 people drink water from that well field with a concentration of arsenic over 10 μg/L. To reduce the health risks associated with arseniccontaminated water intake in Eastern Croatia it is important to develop proper strategies that will use one of the following technologies for arsenic removal: oxidation, coagulation-flocculation, adsorption, ion exchange or membrane technologies