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Second Cheese Whey Treatment Using Zeolite under Continuous Flow Mode and Its Application on Wheat Growth

1
Department of Chemical Engineering, University of Patras, GR-26504 Patras, Greece
2
Department of Environmental and Natural Resources Management, University of Patras, 2 G. Seferi Str., GR-30100 Agrinio, Greece
3
Department of Civil Engineering, Democritus University of Thrace, GR-67100 Xanthi, Greece
4
Institute of Chemical Engineering Sciences (FORTH/ICE-HT), Stadiou Str., Platani, P.O. Box 1414, GR-26504 Patras, Greece
*
Author to whom correspondence should be addressed.
Water 2019, 11(5), 928; https://doi.org/10.3390/w11050928
Received: 5 April 2019 / Revised: 23 April 2019 / Accepted: 26 April 2019 / Published: 1 May 2019
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Abstract

The efficiency of natural zeolite to treat second cheese whey (SCW) and remove ammonium from artificial wastewater (AWW) was examined. Since zeolite has been reported to improve nitrogen availability in soils, its effect on wheat plant growth was also examined. Continuing a previous study using batch reactors, results are presented concerning experiments in fixed-bed columns under continuous operation. Results from the continuous flow column experiments using AWW and zeolite (2.0–2.8 mm) indicated that low flow rates (4 mL/min and 8 mL/min) did not significantly affect zeolite adsorption ability, while maximum zeolite adsorption capacity reached 15.30 mg NH4+-N/g. Finally, the effect of zeolite saturated with NH4+-N on plant growth was examined. The application of saturated zeolite affected significantly wheat plant growth and resulted in faster growth and higher biomass production. View Full-Text
Keywords: zeolite; secondary cheese whey; ammonium removal; column experiments; continuous flow; plant growth experiments zeolite; secondary cheese whey; ammonium removal; column experiments; continuous flow; plant growth experiments
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Kotoulas, A.; Agathou, D.; Triantaphyllidou, I.E.; Tatoulis, T.I.; Akratos, C.S.; Tekerlekopoulou, A.G.; Vayenas, D.V. Second Cheese Whey Treatment Using Zeolite under Continuous Flow Mode and Its Application on Wheat Growth. Water 2019, 11, 928.

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