The use of gasoline oxygenated with MTBE (methyl tert-butyl ether) reduced significantly air pollution (16 - 23% lower emissions of CO and 18% lower emissions of unburned hydrocarbons) but increased water pollution. There is no European or national regulations for MTBE in drinking water except for Denmark, which has set a limit value of 30 Âľg/ L for MTBE. USEPA proposed a maximum concentration of 20- 40 Âľg/L. This paper is a review with 70 references on the MTBE production, use, properties and...
Autori: Camelia Beţianu, Florina Ungureanu, Loredana Branza, Lucian Vasile Pavel, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25122

AbstractThe paper presents new experimental results on the photodegradation of two important phenyl urea herbicides in water: Monuron and Isoproturon. The photodegradation was performed by two Advanced Oxidation Processes (AOPs): the homogeneous photo- Fenton process (, UV-H2O2 - Fe3+) and a heterogeneous photo - Fenton reaction using an iron pillared Laponide- RD catalyst (Fe-Lap-RD). The Fe-Lap-RD catalyst was prepared from iron nitrate 0.2 M solution and a suspension of Laponite - RD clay. Th...
Autori: Elsa Lundanes, Ilie Siminiceanu, Maria-Magdalena Bobu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25234

Abstract The textile wastewaters have a diverse composition depending both on the used raw materials and applied manufacturing technologies. These wastewaters may contain various pollutants such as organic compounds (e.g. residual dyes), suspended solids, metal ions etc. Most of dyes are synthetic compounds with aromatic molecular structures and non-biodegradable. The oxidative destruction via homogenous oxidation processes with hydrogen peroxide (simple chemical oxidation with H2O2 or advanc...
Autori: Carmen Zaharia, Daniela Suteu, Augustin Muresan, Rodica Muresan, Alina Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25570

AbstractThe present study was focused to classify various advanced oxidation processes (AOPs) to degrade sixteen commonpharmaceuticals and personal care products (PPCPs). The classification was based on the degradation rate constant (h-1).Chemometric techniques like principal component analysis (PCA) and cluster analysis (CA) were used to classify AOPs whichcan efficiently degrade a certain class of PPCPs. The bipolt based on first two principal components (PCs) of PCA modelidentified two distin...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26085

AbstractTetracycline (TC) are used as bacteriostatic agents, inhibits the synthesis of bacterial proteins, with activity against awide variety of organisms with application in human and veterinary medicine. The presence of TC in theenvironment constitutes a serious problem, being weakly metabolized or absorbed into the human or animal bodycon. TC residues even in low concentration may produce serious toxic and other effects on humans and livingorganism. In this study are presented the applicatio...
Autori: Carmen Ionela Brînzilă
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26513

The application of advanced oxidation processes (AOPs) emerged as an interesting topic during the last decade. Many studies have been devoted to the complexity of phenomena imposed by AOPs, and a lot of effort was made to justify the application of AOPs. However, the reliability of AOPs has not been an issue of any extensive work. In this work, failure analysis and comparative reliability study were performed for the chosen AOP system, i.e. a laboratory scale photo- and sonoreactor, during the p...
Autori: Ivana Grčić
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27220

A wide range and globally active agro-industries such as olive oil processing, winery, tannery, textile and food production discharge a large volume of wastewater containing tannins. Tannins are complex structured chemicals which cause high organic content, requiring high dissolved oxygen in wastewater treatment plants or producing oxygen depletion in the aquatic environment. Tannins are known to be hardly degraded in biological treatment. There has been evidence that the presence of natural ...
Autori: Giusy Lofrano
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27885

In recent years, so-called emerging contaminants (ECs) have attracted growing interest as they have been detected in reservoirs and even in drinking water. The new proposal Drinking Water Directive (2018) provides for the introduction of new parameters relevant to the ECs category. As these contaminants today tend to be present in a growing number of water sources, provide treatment systems that ensure compliance with regulatory limits and the protection of public health has become essential. Th...
Autori: Sabrina Sorlini
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28081

Advanced oxidation processes (AOPs) are used with high efficiency in wastewater treatment due to the formation of hydroxyl radicals with high oxidation capacity. However, there exists many different variables which affect the efficiency of theses processes as it affects the amount of hydroxyl radicals formed; such as reaction time, pH, temperature, reactant concentrations and catalyst amount. In this study, the removal of 2-chlorophenol (2-CP) and 2,4-dichlorophenol (2,4-DCP), which are highly t...
Autori: Aysun Altikat
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28251