Cyanobacteria for Bioremediation of Wastewaters by Inga Zinicovscaia, Liliana Cepoi

By Inga Zinicovscaia, Liliana Cepoi

This e-book displays using cyanobacteria for the bioremediation of wastewater via diversified mechanisms and pathways of transformation and move of harmful components from one medium to a different. the applying of microorganisms for bioremediation relies on their ubiquity, small dimension, excessive fee of copy and big surface-to-volume telephone ratio. Mechanisms of interplay of cyanobacteria with inorganic pollution contain biosorption, bioaccumulation with a chance to acquire steel nanoparticles either at the telephone floor and contained in the cells in addition to chelation and inclusion of metals within the composition of convinced natural buildings. facts awarded within the e-book presents experts within the box with worthwhile info for bioremediation applied sciences in addition to for acquiring worthy arrangements utilizing cyanobacteria.

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Sample text

03 mg/L on the 20th day of exposure. From the obtained results, we concluded that the highest reduction of NH4+ ion concentration by Synechocystis salina algae occured on the medium with 20 % of wastewater while in samples with 10 and 15 % of wastewater the assimilation of ammonium ions was slower. During the cultivation of Phormidium foveolarum species it was seen a drastic reduction in the amount of ammonium ion to 0 mg/L on the 15th day of cultivation and on the 20th day its amount began to increase.

The numerical effectiveness of cyanobacteria was counted on Goreaev counting camera. To determine the arithmetic media there means 10 replicates of each experiment were made. The cyanobacterial biomass was calculated on the basis of the volume of each cell or by weighing. To establish the veracity of the results statistical analysis using computerized application “Statistics 10 for Windows” was applied. Synechocystis salina Wisl. is one of the first cyanobacterium that inhabits intensely wastewater basins.

3 Conclusions 1. The wastewaters taken at the exit of the Biological Purification Station can be added in the amount 1–20 % in the nutrient medium for the cultivation of cyanobacteria. 2. 16 mg/L was optimal for the cultivation of Synechocystis salina species. 03 mg/L). 3. The role of Synechocystis salina and Phormidium foveolarum in the process of wastewater purification is explained by the overall reduction of the amount of ammonium, nitrate, nitrite and phosphate ions in the first 10–15 days from the moment of inoculation on the medium.

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