Oxygen transfer of microbubble clouds in aqueous solutions – Application to wastewater

Effects of nanobubble aeration in oxygen transfer efficiency and sludge production in wastewater biological treatment

Low efficiency of conventional aeration techniques and the excessive production and disposal of sludge are great concerns in biological wastewater treatment systems. The present study aimed to evaluate the active sludge method using batch reactors under continuous operation to determine the efficiency of aeration and sludge production through microbubble and nanobubble aeration. The results ind...

application of experimental design to emulsion liquid membrane pertraction of gold ons from aqueous solutions

Application of Electro-Fenton (EF) Process to the Removal of Pentachlorophenol from Aqueous Solutions

Pentachlorophenol (PCP) is a very hazardous compound which enters into the environment by industries such as refineries and petrochemicals. As its biological degradation is very slow, this use may cause the pollution of soils and groundwater; with the recent emergence of pentachlorophenol contamination as an important drinking water quality issue, finding an easy, economical, and useful method ...

Application of Multi-Walled Carbon Nanotubes in the Removal of Reactive Red 120 from Aqueous Solutions

Background and purpose: Textile effluents are very difficult to treat satisfactorily due to high variations in their compositions. Strong color is one of the main characteristics of textile effluent and, if not eliminated, it can cause serious problems to the environment. In the present study, multi-walled carbon nanotubes (MWCNTs) were used as an adsorbent for the removal of Reactive Red-120 (...

Application of H2O2 and H2O2/Fe0 in removal of Acid Red 18 dye from aqueous solutions

Background & Aims of the Study: Organic dyes with a complex structure are often toxic, carcinogenic, mutagenic, non-biodegradation and stable in the environment and if released to the environment without treatment can endanger the environment and human health. The aim of this study was to evaluate the performance of H2O2 and H2O2/Fe0 Iron in removal of dye Acid Red 18 from aque...