| 1. |
- Borde, X, et al.
(författare)
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Synergistic relationships in algal-bacterial microcosms for the treatment of aromatic pollutants.
- 2003
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Ingår i: Bioresource Technology. - 1873-2976. ; 86:3, s. 293-300
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Tidskriftsartikel (refereegranskat)abstract
- The potential of algal–bacterial microcosms was studied for the biodegradation of salicylate, phenol and phenanthrene. The isolation and characterization of aerobic bacterial strains capable of mineralizing each pollutant were first conducted. Ralstonia basilensis was isolated for salicylate degradation, Acinetobacter haemolyticus for phenol and Pseudomonas migulae and Sphingomonas yanoikuyae for phenanthrene. The green alga Chlorella sorokiniana was then cultivated in the presence of the pollutants at different concentrations, showing increasing inhibitory effects in the following order: salicylate85%) was recorded only in the systems inoculated with both algae and bacteria and incubated under continuous lighting. This study presents, to our knowledge, the first reported case of photosynthesis-enhanced biodegradation of toxic aromatic pollutants by algal–bacterial microcosms in a one-stage treatment.
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| 2. |
- Guieysse, Benoit, et al.
(författare)
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Influence of the initial composition of algal-bacterial microcosms on the degradation of salicylate in a fed-batch culture
- 2002
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Ingår i: Biotechnology Letters. - 1573-6776. ; 24:7, s. 531-538
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Tidskriftsartikel (refereegranskat)abstract
- The influence of the initial composition of an algal-bacterial microcosm constituted of Chlorella sorokiniana and Ralstonia basilensis was tested for the fed-batch degradation of salicylate at 5 mM. Salicylate degradation was always limited by the O-2 generation rate, which was initially proportional to the algal density, but rapidly became limited by the availability of light once the algae started to grow. The decrease of the salicylate removal rate observed at high algal densities was likely caused by mutual shading within the algal population and the increase of O-2 consumption due to algal dark respiration. With repeated salicylate amendments, all systems converged towards the same characteristics, reaching an optimum rate of salicylate degradation at 1 mmol l(-1) day.
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| 3. |
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| 4. |
- Prieto, C, et al.
(författare)
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Structural order and chemical disorder in the mechanically alloyed Fe-Co-Cu nano-crystalline system
- 2001
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Ingår i: Recent Res. Devel. Non-Crystalline Solids. - : Transworld Research Network, Kerala, India. ; 1, s. 151-169
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Tidskriftsartikel (refereegranskat)abstract
- In this paper we present a structural study of the formation of a metastable Fe-Co-Cu alloy that can be prepared by mechanical alloying. Several steps in the alloy formation are described by using three different techniques: X-ray absorption spectroscopy,
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