Evaluation of the Light/Dark Cycle and Concentration of Tannery Wastewater in the Production of Biomass and Metabolites of Industrial Interest from Microalgae and Cyanobacteria

Water

Jennyfer D. Rivera-Amaya¹  Néstor A. Urbina-Suarez¹  Darly D. Ayala-González¹  Andrés F. Barajas-Solano¹  Fiderman Machuca-Martínez² 

[1] Department of Environmental Sciences, Universidad Francisco de Paula Santander, Av. Gran Colombia No. 12E-96, Cucuta 540003, Colombia;School of Natural Resources and Environment, Universidad del Valle, Cali 760015, Colombia;

关键词: microalgae;    tannery effluents;    carbohydrates;    lipids;    proteins;   

DOI  :  10.3390/w14030346

来源: DOAJ

【 摘 要 】

The tanning industry transforms animal skins into leather and produces liquid effluents with a high organic and inorganic pollutant load. This work evaluated the effect of the tannery wastewater (TWW) concentration and the light/dark cycle on the production of biomass, carbohydrates, proteins, lipids, and pigments (carotenoids and phycobiliproteins) on two microalgae (Chlorella sp. and Scenedesmus sp.) and one cyanobacterium (Hapalosiphon sp.). A non-factorial central experimental design with a response surface was implemented using the STATISTICA 7.0 software. High removal percentages for nitrates (97%), phosphates (73.3%), and chemical oxygen demand (93.2%) were achieved with the three strains. The results also highlight that the use of a constant light regime (24:0) and the concentration of real TWW affect the biomass production, since the highest concentration of biomass recorded was 1.31 g L⁻¹ of Hapalosiphon sp. with 100% undiluted wastewater.

【 授权许可】

Unknown