in the temperature range of 10 to 80 ºc and in a batch digester, a typical activated sludge was digested aerobically. reaction rate constants were determined by measuring the amounts of volatiles removed from the suspended solids at different time intervals during the process. the maximum value of the reaction rate constant (0.45 d-1) occurred in the temperature range of 55-60˚c. removal of ind...

In this work we present a microwave intracavity sensor for the characterization of aqueous solutions nano-liter sessile droplets, deposited on microstrip line electrode. The operates at frequency and is based tunable magnonic delay oscillator. samples were characterized by using their evaporation dynamics, measuring dielectric constants. experiments have shown that capable detecting salinity (S...

Electrocoagulation is a method that can be used to remove pollutants and nutrients from liquid waste. This has been found for long time but exclusively recently developed wastewater treatment after lengthy process. colloidal materials, i.e., suspended solids, metals, other dissolved solids in wastewater. Several studies have shown electrocoagulation successfully operated various industrial wast...

Water quality in a run-off canal system in an industrial area was evaluated for a range of physical and chemical properties comprising trace metals (including mercury (Hg), chromium (Cr), iron (Fe), manganese (Mn), salinity, pH, turbidity, total dissolved solids, total suspended solids, chemical oxygen demand (COD), and dissolved oxygen). High concentrations of potassium (K) (1.260-2.345 mg/l) ...

The main goal of this study is to understand the hydrological and biochemical set up and processes of a marine coastal area located in the western side of the south Adriatic sea (the gulf of Manfredonia) by the use of both satellite images and in situ investigations A water sampling in the gulf of Manfredonia was performed at 18 fixed stations in June 2003; physico-chemical and biological param...

Abstract The laundry business sector is expanding quickly nowadays. However, the industry still dealing with issue of processing detergent wastewater. Anaerobic and aerobic bioreactors may efficiently solve this problem. This narrative review aims to assess feasibility using anaerobic for wastewater treatment. Its advantages disadvantages idea combining multi-media filtration UV light in treatm...

Significant advances in upland erosion modeling have been achieved in the past decade. The TREX (Two-dimensional Runoff, Erosion, and Export) watershed model has been developed at Colorado State University for the simulation of surface runoff from spatially and temporally distributed rainstorms on watersheds. The model has been applied in several countries with different climatic conditions. TR...

An approach is presented to study the functioning of a karstic massif and assess the adverse effects of the anthropogenic pressure by monitoring some water chemical and physical parameters of its main springs. The approach has been applied to the Sette Comuni Plateau (Veneto Region, Italy) hosting a well developed karstic system, whose aquifer presents high vulnerability and undergoes a relevan...