The research aimed to apply the Taguchi method for techno-economical evaluation of Cr+6 removal using the electro-coagulation process with the aid of two different coagulants (FeCl3 and PAC). Taguchi orthogonal array L27 (313) was applied for analyzing the effect of four variables including initial pH, reaction time, current density and coagulant types in an attempt to improve the chromium remo...

Produced waters (PWs) are oilfield waste streams rich in minerals and hydrocarbons whose production rate is largely increased last decades following the corresponding increase of energy demand. The high salinity level PWs inhibits adoption cheap biological treatments. Also, desalination techniques based on osmotic membranes would require severe pre-treatments. As an alternative, Reverse Electro...

In the paper, at first, South-West Baltic Sea environmental and transportation conditions are described. Then a present situation in the passenger and vehicle transportation is overviewed based on the situation of Polish and foreign ferry companies. The techno-economical considerations for the passenger/car ferry for Szczecin-Malmoe route are later discussed. Then main particulars of various cr...

The selection of the most suitable machining process for a given machining application is not straightforward and requires consideration of a number of techno-technological and economic criteria. Therefore is often viewed as a multi-criteria decision making (MCDM). This paper is focused on multi-criteria economic analysis of various machining processes by applying recently developed MCDM method...

Cognitive radios are finally emerging in the form of White Space devices capable of accessing spectral resources allocated for communication systems but not actually in use. Temporal and geographical information on existence of White Space is obtained from dedicated database through Internet access. In this paper, technological advancements enabling commercial utilization of wireless White Spac...

ABSTARCT: Solar drying is an integral part of rural life for various products, especially vegetable, fruits & spices which are produced in rural areas and have no scientific means of preserving such raw products. This paper is an attempt to review the solar drying process & solar dryers used for chilli drying worldwide which includes types of solar dryer, drying process & techno economical feas...