Nitrate removal from liquid effluents using microalgae immobilized on chitosan nanofiber mats

Eroğlu, Ela; Agarwal, Vipul; Bradshaw, Michael; Chen, Xianjue; Smith, Steven M.; Raston, Colin L.; Iyer, K. Swaminathan

doi:10.1039/c2gc35970g

Cited by 120 publications

(96 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the related study was performed by our group in which Acinetobacter calcoaceticus STB1 cells were immobilized on electrospun cellulose acetate nanobrous webs (CA-NFW) in order to achieve enhanced ammonium removal in aqueous environments. 26 Moreover, Eroglu et al 23 have shown in their study that, algal cells were effectively immobilized on electrospun chitosan nanober mats to generate a hybrid system for nitrate removal. In our recent study, decolorization of methylene blue (MB) dye in aqueous medium was achieved by using three types of bacteria (Aeromonas eucrenophila, Clavibacter michiganensis and Pseudomonas aeruginosa) that were immobilized on the CA-NFW within 24 hours and the MB dye removal efficiency was $95%.…”

Section: -22mentioning

confidence: 99%

Removal of a reactive dye and hexavalent chromium by a reusable bacteria attached electrospun nanofibrous web

et al. 2015

View full text Add to dashboard Cite

A contaminant resistant Lysinibacillus sp. NOSK was isolated from a soil sample and its Reactive Black 5 (RB5) and Cr(VI) removal efficiencies were investigated as a function of changes in the initial pH values, temperature, static/shaking conditions, reactive dye and Cr(VI) concentrations. In this study, an electrospun polysulfone nanofibrous web (PSU-NFW) was found to be effective in attachment of bacterial cells. Bacteria attached PSU-NFWs (bacteria/PSU-NFW) have shown highly efficient removal of RB5, as 99.7 AE 0.9% and 35.8 AE 0.4% for the pristine PSU-NFW. Moreover, the highest Cr(VI) removal efficiencies measured were 98.2 AE 0.6% for bacteria attached PSU-NFW and 32.6 AE 0.6% for the pristine PSU-NFW. Simultaneous removal of RB5 and Cr(VI) were also investigated. Reusability test results indicate that, bacteria/PSU-NFW can be reused for at least 7 cycles with 28.1 AE 0.6% and 66.7 AE 0.8% removal efficiencies for RB5 and Cr(VI), respectively.

show abstract

Section: -22mentioning

confidence: 99%

Removal of a reactive dye and hexavalent chromium by a reusable bacteria attached electrospun nanofibrous web

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Over the past years, several magnetic particles have been employed for the separation or entrapment of microalgae. These materials include uncoated iron oxides (Bitton et al 1975;Xu et al 2011;Prochazkova et al 2013), surface functionalized iron oxide nanoparticles with cationic polyacrylamides (Wang et al 2014), chitosan (Eroglu et al 2012;Lim et al 2012), polyvinylpyrrolidone (Eroglu et al 2013), and cationic polyelectrolytes (Toh et al 2014a). Among various separation methods for microalgal harvesting, magnetic separation exhibits high recovery efficiency at short operation time, and no residual magnetic nanoparticles remain in the liquid after separation (Xu et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Harvesting of freshwater and marine microalgae by common flocculants and magnetic microparticles

2015

View full text Add to dashboard Cite

The aim of this study was to investigate the harvesting of freshwater (Scenedesmus rubescens) and marine microalgae (Dunaliella tertiolecta) using common flocculants and iron oxide magnetic microparticles. Aluminum sulfate, aluminum chloride, and iron (III) chloride were tested as flocculants, while iron oxide magnetic microparticles were prepared by microwave treatment. The algal separation efficiency was evaluated, in the presence of aluminum and iron salts, under various operating conditions (stirring time and intensity, coagulant dose). Aluminum salts, and especially aluminum sulfate, were more efficient than iron chloride on algal removal. Turbidity removal was 99 % at a concentration of aluminum sulfate 1.26 mg Al 3+ L −1 . FeCl 3 ·6H 2 O was not effective for freshwater microalgae, and the turbidity removal was 20 and 93 % for S. rubescens and D. tertiolecta, respectively. The algal separation efficiency in the presence of the magnetic microparticles depended on the initial algal and magnetic material concentration. The removal efficiency was ranged between 75 and 91 % for 6.2 and 62 mg L −1 magnetic particles, respectively.

show abstract

“…The functional nanofibers containing microalgae have great potential for the environmental practices. In a study by Eroglu et al 40 algal cells were effectively immobilized on electrospun chitosan nanofiber mats for nitrate removal.…”

Section: ■ Introductionmentioning

confidence: 99%

Microalgae Immobilized by Nanofibrous Web for Removal of Reactive Dyes from Wastewater

Keskin

Çelebioğlu²,

Uyar³

et al. 2015

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

In this study, we have developed microalgae immobilized by polysulfone nanofibrous web (microalgae/PSU-NFW) for the removal of reactive dyes (Remazol Black 5 (RB5) and Reactive Blue 221 (RB221). Here, an electrospinning technique was used to produce polysulfone nanofibrous web (PSU-NFW) as a free-standing material on which microalgae Chlamydomona reinhardtii was immobilized on PSU-NFW. The decolorization capacities of microalgae/PSU-NFW were significantly higher than that of pristine PSU-NFW. The decolorization rate for RB5 was calculated as 72.97 ± 0.3% for microalgae/PSU-NFW, whereas it was 12.36 ± 0.3% for the pristine PSU-NFW. In the case of RB221 solution, decolorization rates were achieved as 30.2 ± 0.23 and 5.51 ± 0.4% for microalgae/PSU-NFW and pristine PSU-NFW, respectively. Reusability tests revealed that microalgae/PSU-NFW can be used in at least three successive decolorization steps in which the decolorization rate of the RB5 was found to be 51 ± 0.69% after the third reuse step. These results are promising and therefore suggest that microalgae/PSU-NFW could be applicable for the decolorization of dyes because of their versatility and reusability.

show abstract

Nitrate removal from liquid effluents using microalgae immobilized on chitosan nanofiber mats

Cited by 120 publications

References 27 publications

Removal of a reactive dye and hexavalent chromium by a reusable bacteria attached electrospun nanofibrous web

Removal of a reactive dye and hexavalent chromium by a reusable bacteria attached electrospun nanofibrous web

Harvesting of freshwater and marine microalgae by common flocculants and magnetic microparticles

Microalgae Immobilized by Nanofibrous Web for Removal of Reactive Dyes from Wastewater

Contact Info

Product

Resources

About