Coupled nutrient removal from the wastewater and CO2 biofixation from the flue gas of iron and steel manufacturing

Cayli, Direnis
Uludag-Demirer, Sibel
Demirer, Göksel Niyazi
CO2 mitigation through photosynthesis has attracted attention as an alternative strategy over chemical methods because it is less costly and energy-consuming. When the microalgae are fed with wastewaters containing high nitrogen and phosphorus, they remove nitrogen and phosphorus from the wastewater. Moreover, the harvested biomass from microalgal reactors constitutes a raw material for the production of different high-value chemicals and bio-fuels. This study investigated the coupled removal of CO2 from the flue gas and nutrients (nitrogen and phosphorus) in the wastewater originating from the coking unit of iron-steel industry by using microalgal photobioreactors. The results indicated that the flue gas from coking unit of a typical iron and steel factory and the wastewater from the same process supported the microalgal growth. Photobioreactors achieved CO2 fixation rates of 11.45-13.52 mg/L day. Notable nutrient (up to 77% total ammonia nitrogen (TAN) and 61% PO4) and heavy metal (72% Cr, 63% Fe, 22% Cu and over 90% Cd) removals were observed in the coking process wastewater which was used to grow microalgal cultures.


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Üner, Deniz; İpek Torun, Bahar (Inderscience Publishers, 2011-01-01)
In this paper we intend to give a broad overview of natural and artificial photosynthesis systems. We point out seven orders of magnitude difference of the rates of water splitting between natural and state of the art artificial photosynthesis in favour of natural photosynthesis. We reviewed the open literature for photocatalytic water splitting, CO2 reduction and suggested routes for improvements in the low yields.
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The aim of this study was to examine bioremediation strategies for BDE-209 contaminated sediments. Sediment microcosms were established to observe anaerobic debromination of BDE-209 under conditions representing three bioremediadon strategies: biostimulation, bioaugmentation and natural attenuation. To simulate biostimulation, a defined mineral medium containing both a carbon source (sodium formate) and electron donor (ethanol) was added into sediments. Bioaugmentation was established by enrichment of the s...
Climate Change Effects on Runoff, Catchment Phosphorus Loading and Lake Ecological State, and Potential Adaptations
Jeppesen, Erik; Kronvang, Brian; Meerhoff, Mariana; Sondergaard, Martin; Hansen, Kristina M.; Andersen, Hans E.; Lauridsen, Torben L.; Liboriussen, Lone; Beklioğlu, Meryem; Ozen, Arda; Olesen, Jorgen E. (Wiley, 2009-09-01)
Climate change may have profound effects on phosphorus (P) transport in streams and on take eutrophication. Phosphorus loading from land to streams is expected to increase in northern temperate coastal regions due to higher winter rainfall and to a decline in warm temperate and and climates. Model results suggest a 3.3 to 16.5% increase within the next 100 yr in the P loading of Danish streams depending on soil type and region. In takes, higher eutrophication can be expected, reinforced by temperature-media...
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Mahowald, NM; Baker, AR; Bergametti, G; Brooks, N; Duce, RA; Jickells, TD; Kubilay, N; Prospero, JM; Tegen, I (American Geophysical Union (AGU), 2005-12-30)
Since iron is an important micronutrient, deposition of iron in mineral aerosols can impact the carbon cycle and atmospheric CO2. This paper reviews our current understanding of the global dust cycle and identifies future research needs. The global distribution of desert dust is estimated from a combination of observations of dust from in situ concentration, optical depth, and deposition data; observations from satellite; and global atmospheric models. The anthropogenically influenced portion of atmospheric...
Ozkan-Yucel, Umay Gokce; Gökçay, Celal Ferdi (OAIMDD - EcoZone Publishing House, 2017-07-01)
The kinetics of azo dye reduction based on combined effect of biochemical reduction by anaerobic mixed culture and chemical reduction with hydrogen sulfide was investigated. Hydrogen sulfide was produced by sulphate reducing bacteria existing in the anaerobic mixed culture. The effect of initial anaerobic biomass, initial substrate, and initial dye (Reactive Orange 107) concentrations on reduction kinetics were studied with batch assays. The municipal waste sludge was used as electron donating substrate for...
Citation Formats
D. Cayli, S. Uludag-Demirer, and G. N. Demirer, “Coupled nutrient removal from the wastewater and CO2 biofixation from the flue gas of iron and steel manufacturing,” INTERNATIONAL JOURNAL OF GLOBAL WARMING, pp. 148–161, 2018, Accessed: 00, 2020. [Online]. Available: