3. Results and discussion
3.1. Comparison of biosorbents characteristics
Spirogyra and Cladophora spp. are benthic freshwater green algae
widely distributed throughout the world. We selected these
two algae genera as adsorption materials and used optical microscopes
to observe fresh samples, these two genera of algae could
be easily differentiated by their characteristics. The plant bodies
of Cladophora spp. showed branches. The Spirogyra spp. did not
show any branching. Spirogyra chloroplast bands a spiral belt. On
the plant bodies of Cladophora spp., we could observe a large
amount of epiphytic algae, mainly Bacillariophyta, and small epiphytic
algae such as Chlorophyta, Cyanophyta, and Euglenophyta.