- AutorIn
- Marina Maia Federal University of Rio Grande do Sul, Chemical Engineering Department, Laboratory for Leather and Environmental Studies – LACOURO, Porto Alegre, Brazil
- O. Perez-LopezFederal University of Rio Grande do Sul, Chemical Engineering Department, Laboratory for Leather and Environmental Studies – LACOURO, Porto Alegre, Brazil
- M. GutterresFederal University of Rio Grande do Sul, Chemical Engineering Department, Laboratory for Leather and Environmental Studies – LACOURO, Porto Alegre, Brazil
- Titel
- Adsorptive removal of sulfate, phosphate and chloride by Mg-Al and Zn-Al Layered Double Hydroxides from aqueous solutions
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-343231
- Konferenz
- XXXV IULTCS Congress Dresden 2019 / 8th Freiberg Leather Days. Dresden, 25. - 28. Juni 2019
- Quellenangabe
- XXXV IULTCS Congress 2019 - Proceedings
Herausgeber: Dr. Dietrich Tegtmeyer, Dr. Michael Meyer
Erscheinungsort: Dresden
Verlag: Verein für Gerberei-Chemie und -Technik e. V., Freiberg, Forschungsinstitut für Leder und Kunststoffbahnen (FILK) gGmbH, Freiberg
Erscheinungsjahr: 2019 - Erstveröffentlichung
- 2019
- Abstract (EN)
- Content: The wastewater of leather industry contains pollution loads which includes anionic contaminants such as chloride, sulfate and phosphate. Different treatment technologies for tannery wastewater have been investigated. Adsorption is a promising technique due to its greater selectivity, simple operation, faster regeneration kinetics and high uptake capacity even at trace levels. In the present study, Mg-Al and Zn-Al Layered Double Hydroxides were synthesized by the co-precipitation method at variable pH through a semi-batch system. The prepared material was characterized by XRD, BET surface area determination, TGDTA and FTIR. The chloride, sulfate and phosphate adsorption properties onto Mg-Al and Zn-Al Layered Double Hydroxides from aqueous solutions were evaluated. The adsorption experiments of chloride, sulfate and phosphate were investigated through batch studies at initial concentrations of 100 mg/L of these anions as NaCl, K2SO4 and KH2PO4, respectively. The experiments were carried out separately for each anionic specie by mixing 10 ml of solution with 1 g/L of adsorbent for 5 h. Mixing was performed on a thermostatic shaker at 200 rpm and at room temperature (25 °C). The effect of co-existing anions on the adsorption capacity were also analyzed. After ion adsorption, chloride, sulfate and phosphate concentrations were measured by ion chromatography. The results showed a removal ratio for Mg-Al Layered Double Hydroxide of 24% and 51% for sulfate and phosphate, respectively, while chloride was not removed from the solution. For the adsorbent Zn-Al Layered Double Hydroxide, the removal ratio of sulfate, phosphate and chloride reached 12.76 %, 69.07 % and 6.34%, respectively. Take-Away: Both adsorbents exhibited a satisfactory removal ratio of phosphate. Therefore, Mg–Al and Zn–Al LDHs can be used as effective adsorbents for phosphate removal from industrial wastewaters.
- Freie Schlagwörter (EN)
- Adsorption, layered double hydroxides, tannery wastewater treatment
- Klassifikation (DDC)
- 620
- Klassifikation (RVK)
- ZS 7250
- Verlag
- Verein für Gerberei-Chemie und -Technik e. V., Freiberg
- Forschungsinstitut für Leder und Kunststoffbahnen (FILK) gGmbH, Freiberg
- Sonstige beteiligte Institution
- International Union of Leather Technologists and Chemists Societies
- Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa2-343231
- Veröffentlichungsdatum Qucosa
- 28.06.2019
- Dokumenttyp
- Konferenzbeitrag
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis