Clay-starch combination for micropollutants removal from wastewater treatment plant effluent

In this study, a new, more effective and cost-effective treatment alternative is investigated for the removal of pharmaceuticals from wastewater treatment plant effluent (WWTP-eff). The potential of combining clay with biodegradable polymeric flocculants is further highlighted. Flocculation is viewe...

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Bibliographic Details
Published in:Water science and technology 2016-04, Vol.73 (7), p.1719-1727
Main Authors: Mohd Amin, M F, Heijman, S G J, Rietveld, L C
Format: Article
Language:English
Subjects:
Activated carbon
Adsorbents
Adsorption
Aluminum Silicates - chemistry
Atrazine
Biodegradability
Biodegradation
Biodegradation, Environmental
Caffeine
Cations
Chemical oxygen demand
Clay
Effluents
Flocculants
Flocculation
Herbicides
Micropollutants
Pharmaceuticals
Pollutant removal
Polymers
Removal
Sediments
Sludge
Starch
Starch - chemistry
Studies
Waste Disposal Facilities
Waste Disposal, Fluid - methods
Waste Water - chemistry
Wastewater
Wastewater treatment
Wastewater treatment plants
Water Pollutants, Chemical - chemistry
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Summary:In this study, a new, more effective and cost-effective treatment alternative is investigated for the removal of pharmaceuticals from wastewater treatment plant effluent (WWTP-eff). The potential of combining clay with biodegradable polymeric flocculants is further highlighted. Flocculation is viewed as the best method to get the optimum outcome from clay. In addition, flocculation with cationic starch increases the biodegradability and cost of the treatment. Clay is naturally abundantly available and relatively inexpensive compared to conventional adsorbents. Experimental studies were carried out with existing naturally occurring pharmaceutical concentrations found and measured in WWTP-eff with atrazine spiking for comparison between the demineralised water and WWTP-eff matrix. Around 70% of the total measured pharmaceutical compounds were removable by the clay-starch combination. The effect of clay with and without starch addition was also highlighted.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2016.001