The Selective Use of Hypochlorite to Prevent Pond Crashes for Algae-Biofuel Production
Autor: | Yongsheng Chen, Terry W. Snell, Thomas Igou, Priya Pradeep, Steven W. Van Ginkel, Sichoon Park, Christine Yi |
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Rok vydání: | 2016 |
Předmět: |
0301 basic medicine
Food Chain Bleach Sodium Hypochlorite Rotifera chemistry.chemical_element Hypochlorite Aquaculture Chlorella 03 medical and health sciences chemistry.chemical_compound Algae Botany Brachionus calyciflorus Chlorine Environmental Chemistry Animals Ponds Waste Management and Disposal Water Science and Technology Anthelmintics biology Chemistry Ecological Modeling biology.organism_classification Pollution Algae fuel 030104 developmental biology Environmental chemistry Sodium hypochlorite Biofuels |
Zdroj: | Water environment research : a research publication of the Water Environment Federation. 88(1) |
ISSN: | 1061-4303 |
Popis: | Although algae-biofuels have many advantages including high areal productivity, algae can be preyed upon by amoebas, protozoans, ciliates, and rotifers, particularly in open pond systems. Thus, these higher organisms need to be controlled. In this study, Chlorella kessleri was used as the algal culture and Brachionus calyciflorus as the source of predation. The effect of sodium hypochlorite (bleach) was tested with the goal of totally inhibiting the rotifer while causing minor inhibition to the alga. The 24-hr LC(50) for B. calyciflorus in spring water was 0.198 mg Cl/L while the 24-hr LC(50) for C. kessleri was 0.321 mg Cl/L. However, chlorine dissipates rapidly as the algae serves as reductant. Results showed a chlorine dosage between 0.45 to 0.6 mg Cl/L and a dosing interval of two hours created the necessary chlorine concentrations to inhibit predation while letting the algae grow; thus giving algae farmers a tool to prevent pond crashes. |
Databáze: | OpenAIRE |
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