Comparative study of the eliminating of waste gas containing toluene in twin biotrickling filters packed with molecular sieve and polyurethane foam

Co-treatment of single, binary and ternary mixture gas of ethanethiol, dimethyl disulfide and thioanisole in a biotrickling filter seeded with Lysinibacillus sphaericus RG-1

“…Therefore, the decrease of the REs and slightly increase of ECs were found as the reaction limitation occurred. This result agrees with the viewpoint that the inlet concentration is a significant limiting parameter in the biotrickling filter as described in the previous references [37,38]. In addition, high inlet concentration may enhance the production of biomass, which subsequently increases the biofilm thickness, decreases the porosity of carrier material and walls up the air flow in the biotrickling filter [39].…”

Efficient bio-deodorization of thioanisole by a novel bacterium Brevibacillus borstelensis GIGAN1 immobilized onto different parking materials in twin biotrickling filter

“…That is, volatile contaminants were firstly adsorbed onto the biofilm when they passed through the reactor, then transformed into simple, odorless end products (Hort et al, 2009;Liu et al, 2009). Nevertheless, BTF is by far proved to be the most perspective bioreactor for odor treatment from industrial and municipal airstreams due to its superiority in the elimination of high concentrated gaseous pollutants (He et al, 2009). Compared with other bioreactors, BTF possessed circulated trickling nutrimental solution, which is conducive to control the operational environment (Shareefdeen and Singh, 2005).…”

“…Compared with other bioreactors, BTF possessed circulated trickling nutrimental solution, which is conducive to control the operational environment (Shareefdeen and Singh, 2005). Besides, the packing materials of BTF such as resins, ceramic particles (CP) (Wan et al, 2011c), Celite, polyurethane foam and molecular sieve (He et al, 2009;Mudliar et al, 2010) are also beneficial to the flow of gas and liquid through the bed, as well as the formation of biofilm. Furthermore, the outstanding removal efficiency of off-gas emission in BTF packed with CP and activated carbons (AC), which have excellent absorption capacity, microporous structural properties and good resistance to crush, has already been demonstrated in previous studies Duan et al, 2007).…”

Effect of empty bed residence time on biotrickling filter performance: case study—triethylamine

“…Many methods have been studied for the reduction and elimination of air pollution. Biological process has been determined to be a highly efficient technology to remove odorous or toxic waste gas of volatile organic compounds (He et al 2009;Kaosol and Pongpat 2012;Luvsanjamba et al 2008;Wan et al 2011a).…”

“…A biofilter is substantially a compost bed through which the waste gases can pass and be absorbed simultaneously, leading to the compost bed to be degraded by the immobilized microorganism on the packing materials. Although BTFs operate in a similar way to BFs, nutrimental solution that contains essential inorganic nutrients such as nitrogen, phosphorous, potassium, and some microelements is continuously trickled on the packing materials (He et al 2009). The contaminants in the gas phase are dissolved into the liquid phase and then diffused into the biofilm phase to be degraded (Lee et al 2010).…”