The suitable management and handling of the chemical wastes origínatíng from laboratories allow the saving of reagents and materíals; as well as the reductíon of costs assocíated wíth their handling and final disposal. lt also prevents detriment to the health of the people who have to conduct an academic activity in the laboratory (professors, assistants and students) ora professíonal activity related to service consulting dealíng with chemical analyses (analysts, assistants and auxiliary personnel). The responsible handling of chemícal wastes wíll reduce present and future threats to the health and the environment; as well as the deterioration of materials. Therefore, a method far envíronmental chemical waste management of laboratories is presented.

The suitable management and handling of the chemical wastes origínatíng from laboratories allow the saving of reagents and materíals; as well as the reductíon of costs assocíated wíth their handling and final disposal. lt also prevents detriment to the health of the people who have to conduct an academic activity in the laboratory (professors, assistants and students) ora professíonal activity related to service consulting dealíng with chemical analyses (analysts, assistants and auxiliary personnel). The responsible handling of chemícal wastes wíll reduce present and future threats to the health and the environment; as well as the deterioration of materials. Therefore, a method far envíronmental chemical waste management of laboratories is presented.

It has been obtained the mass and heat transfer coefficients from experimental data of the granular- cereals drying such as rice, wheat, barley and oat in a conventional spouted bed column. The range of mass air flow varies from 5.2 and 40 kg/sm2. The mass transfer coefficients varies from 0.331 and 0.789 Kg/(sm2atm), and heat transfer coefficient varies from 43.7 and 53.8 W/m2K

It has been obtained the mass and heat transfer coefficients from experimental data of the granular- cereals drying such as rice, wheat, barley and oat in a conventional spouted bed column. The range of mass air flow varies from 5.2 and 40 kg/sm2. The mass transfer coefficients varies from 0.331 and 0.789 Kg/(sm2atm), and heat transfer coefficient varies from 43.7 and 53.8 W/m2K

Copper (11) adsorption properties of pre-treated biomass of marina algae Grateloupia doryophora (Rhodophyta) were investigated. The native biomass was treated with 0.2 M CaCl2, solution for 24 h under slow stirring. The solution pH was kept constant at pH = 5.0 using 0.1 M NaOH. The treated biomass was dried in an oven at 40ºC for 24 h. The adsorption capacity of the biomass strongly depends on equilibrium solution pH. At solution pH between 4 and 4,5 were observed the maximum adsorptive capacity of the pre-treated biomass.

Copper (11) adsorption properties of pre-treated biomass of marina algae Grateloupia doryophora (Rhodophyta) were investigated. The native biomass was treated with 0.2 M CaCl2, solution for 24 h under slow stirring. The solution pH was kept constant at pH = 5.0 using 0.1 M NaOH. The treated biomass was dried in an oven at 40ºC for 24 h. The adsorption capacity of the biomass strongly depends on equilibrium solution pH. At solution pH between 4 and 4,5 were observed the maximum adsorptive capacity of the pre-treated biomass.