Effect of hydraulic retention time on continuous biocatalytic calcification reactor
Yükleniyor...
Tarih
2010
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevıer Scıence Bv
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
High calcium concentrations in the wastewaters are problematic, because they lead to clogging of pipelines, boilers and heat exchangers through scaling (as carbonate, sulfate or phosphate precipitates), or malfunctioning of aerobic and anaerobic reactors. As a remedy to this problem, the industry typically uses chemical crystallization reactors which are efficient but often require complex monitoring and control and, as a drawback, can give rise to highly alkaline effluents. Biomineralization are emerging as alternative mechanisms for the removal of calcium from aqueous environments. Biocatalytic calcification reactors (BCR) utilize microbial urea hydrolysis by bacteria for the removal of calcium, as calcite, from industrial wastewater. Hydraulic retention time (HRT) effect on calcium removal was studied with a continuous feed BCR reactor treating a simulated pulp paper wastewater. Study showed that HRT is important parameter and HRT of 5-6 h is optimum for calcium removal from calcium-rich wastewaters. (C) 2010 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Biocatalytic, HRT, Alkalinity, Precipitation
Kaynak
Journal of Hazardous Materials
WoS Q Değeri
N/A
Scopus Q Değeri
Q1
Cilt
182
Sayı
01.Mar
