Analysis of Metabolites and Carbon Balance in the Biofilteration of Cumene Using Loofa Sponge as Biofilter Media

Abstract

A laboratory-scale biofilter study was performed to treat cumene-inoculated mixed culture of bacterial community and loofa sponge (Luffa cylindrica) as support media for a period of 120 days in five distinct phases. The removal efficiency was obtained in the range of 40-85 % with maximum elimination capacity of 700 g m(-3) h(-1) at the inlet load of 1167 g m(-3) h(-1). The result demonstrated that loofa sponge is good support media for the removal of cumene at higher loading rates. Loofa sponge was characterized via chemical analysis and analytical techniques such as XRD; FTIR; XPS; and CHN, and the result obtained confirms its suitability as biofilter media. The SEM results of loofa with inoculum shows the formation of a biofilm layer on the surface of loofa. The GC-MS analysis of leachate confirms the presence of different organic compounds such as acetaldehyde and 4-hydroxy-2-oxopentanoic acids which are stable metabolites during cumene biodegradation. About 12.69 % of carbon present in inlet cumene was converted to biomass.

Biofiltration of methane in presence of ethylbenzene or xylene

“…A linear relation between PCO 2 and EC variation was obtained with slopes of 1.02 and 0.94 for BF1 and BF2, respectively. The slopes show the PCO 2 /EC ratios (mass ratio), and the deviation from the theoretical mass ratios (lower than 2.75-3.32) indicates that microorganisms produced biomass and other by-products such as extracellular polymeric substances (EPS), catechol, formaldehyde, etc., along with CO 2 (Cruz--García et al, 2019;Khabiri et al, 2020b;Shahi et al, 2016). Since the slope for BF1 was 7% higher than for BF2, a higher portion of the consumed carbon was converted to CO 2 compared to biomass.…”

Bioremediation of propylbenzenes by a novel marine microalga Rhinomonas reticulata S6A isolated from Daya Bay: acute toxicity, growth kinetics and biodegradation performance

“…The bacteria Pseudomonas putida RE204 and Pseudomonas fluorescen IP01 can degrade i-PBZ via meta-cleavage of the aromatic ring and oxidize the side chain to isobutyric acid and 2-oxo-4-pentenoic acid (Aoki et al, 1996;Habe et al, 1996;Eriksson et al, 2005). A soilderived bacterial community converts i-PBZ to several different metabolites such as acetaldehyde and 4-hydroxy-2-oxovaleric acid (Shahi et al, 2016). Eriksson et al (2005) studied the anaerobic biodegradation of n-PBZ under iron-reducing conditions and n-PBZ was reduced to propylphenols over 18 weeks.…”

Evaluation of Immobilization of Selected Peat-Isolated Yeast Strains of the Species Candida albicans and Candida subhashii on the Surface of Artificial Support Materials Used for Biotrickling Filtration

“…The most important element of the biofiltration apparatus 2 of 21 is a column packing that is colonized by the microorganisms responsible for VOC removal, the compounds of odor nuisance. Usually, ambiguous term like fungi or microbial consortium is used, without clear indication of the species present in a biofilter bed [4][5][6][7][8][9]. At present, especially bacterial strains used in biofiltration are a subject of extensive studies [10,11].…”