In this work is evaluated the yield of algínico acid from stems and leaves of the algae trabeculata Lessonia.

In this work is evaluated the yield of algínico acid from stems and leaves of the algae trabeculata Lessonia.

The purpose of this research is to evaluate the performance of production of alginic acid laboratory scale in order to compare the results of the kinds of brown algae: Lessonia trabeculata vs. Macrocystis pyrifera. The results indicate higher performance in the production of acid alginic from Macrocystis pyrifera regarding Lessonia trabeculata.

The purpose of this research is to evaluate the performance of production of alginic acid laboratory scale in order to compare the results of the kinds of brown algae: Lessonia trabeculata vs. Macrocystis pyrifera. The results indicate higher performance in the production of acid alginic from Macrocystis pyrifera regarding Lessonia trabeculata.

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.