Evaluation of a thermo-tolerant acidophilic alga, Galdieria sulphuraria, for nutrient removal from urban wastewaters
| Autor: | Thinesh Selvaratnam, W. Van Voorhies, Felly Montelya, G. Rodriguez, Ambica Koushik Pegallapati, Nagamany Nirmalakhandan, Peter J. Lammers |
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| Rok vydání: | 2014 |
| Předmět: |
Environmental Engineering
Nitrogen chemistry.chemical_element Biomass Bioengineering Wastewater Biology Photobioreactors Nutrient Biomass yield Botany Cities Waste Management and Disposal Effluent Sewage Renewable Energy Sustainability and the Environment Galdieria sulphuraria Thermophile Temperature Phosphorus General Medicine Pulp and paper industry Adaptation Physiological Biodegradation Environmental chemistry Rhodophyta Water Pollutants Chemical |
| Zdroj: | Bioresource Technology. 156:395-399 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2014.01.075 |
| Popis: | Nutrient removal from primary wastewater effluent was tested using Galdieria sulphuraria, an acidophilic and moderately thermophilic alga. Biomass yield recorded in this study (27.42 g biomass per g nitrogen removed) is higher than the average reported in the literature (25.75 g g−1) while, the theoretical yield estimated from the empirical molecular formula of algal biomass is 15.8 g g−1. Seven-day removal efficiencies were 88.3% for ammoniacal-nitrogen and 95.5% for phosphates; corresponding removal rates were 4.85 and 1.21 mg L−1 d−1. Although these rates are lower than the average literature values for other strains (6.36 and 1.34 mg L−1 d−1, respectively), potential advantages of G. sulphuraria for accomplishing energy-positive nutrient removal are highlighted. Feasibility of growing G. sulphuraria outdoors at densities higher than in high-rate oxidation ponds is also demonstrated. |
| Databáze: | OpenAIRE |
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