title: Hepatotoxic microcystin removal using pumice embedded monolithic composite cryogel as an alternative water treatment method.
abstract: Microcystins are the most commonly encountered water-borne cyanotoxins which present short- and long-term risks to human health. Guidelines at international and national level, and legislation in some countries, have been introduced for the effective health risk management of these potent hepatotoxic, tumour-promoters. The stable cyclic structure of microcystins and their common production by cyanobacteria in waterbodies at times of high total dissolved organic carbon content presents challenges to drinking water treatment facilities, with conventional, advanced and novel strategies under evaluation. Here, we have studied the removal of microcystins using three different forms of pumice particles (PPs), which are embedded into macroporous cryogel columns. Macroporous composite cryogel columns (MCCs) are a new generation of separation media designed to face this challenging task. Three different MCCs were prepared by adding plain PPs, Cu(2+)-attached PPs and Fe(3+)-attached PPs to reaction media before the cryogelation step. Column studies showed that MCCs could be successfully used as an alternative water treatment method for successful microcystin removal.
authors.affiliation: Department of Environmental Engineering University of Aksaray, Aksaray 68200, Turkey. Electronic address: fatma_gurbuz@yahoo.com.
authors.forename: Fatma
authors.initials: F
authors.lastname: Gurbuz
authors.affiliation: Department of Chemistry, Faculty of Science, Aksaray University, Aksaray, Turkey.
authors.forename: Şeyda
authors.initials: Ş
authors.lastname: Ceylan
authors.affiliation: Department of Chemistry, Faculty of Science, Aksaray University, Aksaray, Turkey.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Odabaşı
authors.affiliation: Biological and Environmental Sciences University of Stirling, Stirling FK9 4LA, UK; School of the Environment, Flinders University Adelaide, South Australia 5042, Australia.
authors.forename: Geoffrey A
authors.initials: GA
authors.lastname: Codd
mesh_terms: D000327:Adsorption; D002244:Carbon / Q000737:chemistry; D002846:Chromatography, Affinity / Q000379:methods; D002851:Chromatography, High Pressure Liquid; D003300:Copper / Q000737:chemistry; D059985:Cryogels / Q000737:chemistry*; D000458:Cyanobacteria / Q000737:chemistry; D007477:Ions / Q000737:chemistry; D007501:Iron / Q000737:chemistry; D008024:Ligands; D052998:Microcystins / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D046931:Microcystis; D008855:Microscopy, Electron, Scanning; D017640:Silicates / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods*; D014867:Water / Q000032:analysis; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000032:analysis; D018508:Water Purification / Q000379:methods*; D014881:Water Supply
chemical_list: D059985:Cryogels; D007477:Ions; D008024:Ligands; D052998:Microcystins; D017640:Silicates; D014874:Water Pollutants, Chemical; D014867:Water; D002244:Carbon; C078588:microcystin; D003300:Copper; D007501:Iron; C005144:pumice
keywords: Cryogels; IMAC; Microcystin; Pumice; Water treatment