The increasing of standard living causes the increases energy consumption and waste or wastewater production. The possibility to combine wastewater treatment and electricity production can accomplish a microbial fuel cell. The possibility of wastewater treatment using the Cu-B catalyst with KMnO4 catholyte for microbial fuel cells is presented in this paper. The measurements covered comparison of changes in the concentration of COD, NH4+ and NO3- in the reactor without aeration, with aeration and with using a microbial fuel cell (with Cu-B cathode and KMnO4 catholyte). The reduction time for COD with the use of microbial fuel cell with the Cu-B catalyst (and KMnO4 catholyte) is similar to the reduction time with aeration. It has been shown that the Cu-B (with KMnO4 catholyte) can be used as cathode catalyst in microbial fuel cells. Unfortunately in this case is needed to constant delivery of catholyte. ...
The study is supposed to start a series of research on the role of natural building as an environment friendly solution. It includes the results of a survey which was carried out to define the level of university students' ecological awareness of benefits and development prospects of this technology in Poland. Young people were surveyed to find out their knowledge of the solutions based on natural resources available in the environment. It has been established whether positive attitude of students toward the natural environment can find reflection in their approval of eco-building and subsequently, willingness to invest money in construction of such buildings in the future. An important question has been addressed, that is, whether people are interested in houses made of clay, straw or wood an whether they consider them as cheap, durable, modern and esthetic architectural forms. ...
