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Main Title: Conditioning fixed-bed filters with fine fractions of granulated iron hydroxide (µGFH)
Author(s): Hilbrandt, Inga
Ruhl, Aki S.
Jekel, Martin
Type: Article
Language Code: en
Abstract: The fine fraction of granular ferric hydroxide (µGFH, <0.3 mm) is a promising adsorbent for the removal of heavy metals and phosphate, but properties of µGFH were hitherto not known. The present study aimed at characterizing µGFH regarding its physical and chemical properties and at evaluating methods for the conditioning of fixed-bed filters in order to develop a process that combines filtration and adsorption. Conditioning was done at different pH levels and for different particle sizes. Anthracite, coke, pumice and sand were studied as potential carrier materials. A method for the evaluation of the homogeneity of the iron hydroxide particle distribution on pumice filter grains using picture analysis was developed. Pre-washed pumice (pH 8.5) proved to lead to high embedment and a homogeneous distribution of µGFH. Filter runs with phosphate (2 mg/L P) showed similar breakthrough curves for the embedded fine fraction adsorbent and for conventional GFH.
Issue Date: 25-Sep-2018
Date Available: 22-Oct-2018
DDC Class: 690 Hausbau, Bauhandwerk
Subject(s): granular ferric hydroxide
fixed-bed adsorber
distribution analysis
filter conditioning
Sponsor/Funder: DFG, TH 662/19-1, Open Access Publizieren 2017 - 2018 / Technische Universität Berlin
Journal Title: Water
Publisher: MDPI
Publisher Place: Basel
Volume: 10
Issue: 10
Article Number: 1324
Publisher DOI: 10.3390/w10101324
EISSN: 2073-4441
Appears in Collections:FG Wasserreinhaltung » Publications

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