Coal-based bottom ash (CBBA) waste material as adsorbent for removal of textile dyestuffs from aqueous solution
Küçük Resim Yok
Tarih
2007
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A locally available CBBA waste material was used as adsorbent for removal of reactive dyes from synthetic textile wastewater. This study presents the results of our investigation on color removal from synthetic wastewater containing Vertigo Blue 49 (Cl Blue 49) and Orange DNA 13 (Cl Orange 13) by adsorption onto CBBA waste material. The effectiveness of CBBA waste material in adsorbing reactive dyes from aqueous solutions was studied as a function of contact time, initial dye concentration and pH by batch experiments. Leachability of waste material was also evaluated using standard leaching test with deionized water (DIN38414-S4). pH 7 was more favorable for color removal from both Vertigo Blue 49 (Cl Blue 49) and Orange DNA (Cl Orange 13). Dyestuff adsorption capacities of CBBA for Vertigo Blue 49 and Orange DNA13 were 13.51 and 4.54 mg dye/g adsorbent, respectively. The adsorption isotherms for the CBBA can be better described by the Freundlich isotherm. The results showed that the dyestuff uptake process for both dyes followed the second-order kinetics. The bottom ash used in this study is not classified as ecotoxic/hazardous material according to the French proposal for a criterion and evaluation methods of waste ecotoxicity (CEMWE) and the German regulation on Hazardous Waste Classification (HWC). (c) 2006 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Adsorption, Bottom Ash, Color Removal, Leaching, Wastewater Treatment, Activated Carbon, Malachite Green, Acid Dyes, Equilibrium Uptake, Sorption Dynamics, Column Operations, Methylene-Blue, Reactive Dye, Rhodamine-B, Basic-Dyes
Kaynak
Journal Of Hazardous Materials
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
141
Sayı
3
