Abstract:
:A rapid method for harvesting and immobilization of oleaginous microalgae using pellet-forming filamentous fungi was developed. The suitable conditions for pellet formation by filamentous fungi were determined. Among the strains tested, Trichoderma reesei QM 9414 showed superior pellet forming ability. Its pellets were used to harvest oleaginous microalga Scenedesmus sp. With increasing volume ratio of fungal pellets to microalgae culture up to 1:2, >94% of microalgal cells were rapidly harvested within 10 min. The ratio of fungal pellets could manipulate both harvesting time and initial concentration of microalgal cells in the pellets. The microalgae-fungal pellets were successfully used as immobilized cells for effective phytoremediation of secondary effluent from seafood processing plants under nonsterile condition. The chemical oxygen demand, total nitrogen, and total phosphorus removal were >74%, >44%, and >93%, respectively. The scanning electron microscopy showed that the microalgal cells were not only entrapped in the pellets but also got attached to the fungal hyphae with sticky exopolysaccharides, possibly secreted by the fungi. The extracted lipids from the pellets were mainly composed of C16-C18 (>83%) with their suitability as biodiesel feedstocks. This study has shown the promising strategy to rapidly harvest and immobilize microalgal cells and the possible application in phytoremediation of industrial effluent.
journal_name
Int J Phytoremediationjournal_title
International journal of phytoremediationauthors
Srinuanpan S,Chawpraknoi A,Chantarit S,Cheirsilp B,Prasertsan Pdoi
10.1080/15226514.2018.1452187subject
Has Abstractpub_date
2018-08-24 00:00:00pages
1017-1024issue
10eissn
1522-6514issn
1549-7879journal_volume
20pub_type
杂志文章abstract::Inadequate abandonment of copper mine tailings under semiarid Mediterranean climate type conditions has posed important environmental risks in Chile due to wind and rain erosion. There are cost-effective technologies for tailings stabilization such as phytostabilization. However, this technology has not been used in C...
journal_title:International journal of phytoremediation
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journal_title:International journal of phytoremediation
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journal_title:International journal of phytoremediation
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