Sustainable treatment potential of mixed algal consortia for domestic waste water: Growth and mixotropy
Journal Title: Carbon - Science and Technology - Year 2015, Vol 7, Issue 2
Abstract
The increasing levels of generation of nutrient-rich waste water pose serious challenge. Conventional biological and chemical methods of waste water treatment have failed in meeting sustainability challenges. Naturally occurring mixed algal species reared in mixotrophic growth modes have been deployed to recover nutrients (N and P) from domestic wastewater after anaerobic digestion. In this paper, we present the results pertaining to growth and mixotrophy. Pilot-scale operation shows that the cultivation methods adopted and the use of naturally selected species lead to a tendency among these species to clump at certain stages of growth that in turn float or settle rapidly making algal harvest and thereby the nutrient recovery processes energy efficient. The highest settling rate was found to be 6.37 ± 1.6 g/m2/d. Mixotrophy was seen to contribute 15 – 24 % across the various algal consortia in wastewater (polyculture).
Authors and Affiliations
Priyanka Murthy and Chanakya H. N
Keywords
Related Articles
- EP ID EP49959
- DOI -
- Views 227
- Downloads 0
Dry fermentation technology for utilization of Bio-energy crops/crop residues for biogas production
Indian state Punjab produces 160 lakh tones of paddy every year. More than this quantity of paddy, straw is also produced which is not properly utilized. Paddy is burnt in the farmer’s fields itself, which produces lot o...
An artificial neural network model of the Chemical Vapor Deposition Processes for Carbon – Carbon composites.
A model of artificial neural network (ANN) is developed for the analysis of the correlation between the chemical vapor deposition (CVD) processing parameters and the densification of carbon - carbon (C/C) composites. The...
Investigations on temperature distribution in welding of Aluminium alloys to steel using FEM
This research study focuses on the objective to establish an analytical model for determining the thermal distribution during friction stir welding (FSW), based on different assumptions of the contact condition between t...
Thermo-physical properties measurment of water based Fe3O4 nanofluids
Two-step method was used to prepare nanofluids in which nanoparticles were first prepared and then dispersed in basefluid. This paper presents the effect of different volume fractions of magnetic Fe3O4 on thermal conduct...
Identification of metabolically active methanogens in anaerobic digester by DNA Stable-Isotope Probing using 13C-acetate
Anaerobic digestion is gaining enormous attention due to the ability to covert organic wastes into biogas, an alternative sustainable energy. Methanogenic community plays a significant role in biogas production and also...