Evaluation of sewage sludge and yard waste compost as a biofilter media for the removal of ammonia and volatile organic sulfur compounds (VOSCs)

Mechanisms of Malodor Reduction in Dewatered Sewage Sludge by Means of The Hydrothermal Torrefaction

“…The odor samples were measured by gas chromatography to evaluate the malodor reduction (Table 4), and the results support our organoleptic evaluation to some extent. Previous reports indicated that, in general, sulfur-containing compounds characterize the odor from DSS (16,17) , and we also detected sulfur-containing compounds in the odor sample from untreated DSS. After the hydrothermal torrefaction, the sulfur-containing compound concentrations decreased, whereas the concentrations of aldehydes, light aromatics, and organic acid compounds increased slightly.…”

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

“…Comparatively, all of the results showed that both much higher RE and EC were achieved in this work than other reported references. For example, Luis et al [22] seeded with an alkaliphilic sulfo-oxidizing bacteria in a biotrickling filter to purify ethanthiol under the alkaline condition, and achieved only 3.65 g/m 3 /h of maximum EC with a 50% RE at EBRT 40 s. Hort et al [27] reported an approximately 100% of RE of a biofilter packed with compost and sludge for 16 and 45 ppbv ethanethiol and DMDS at EBRT 60 s, respectively. For DMDS and thioanisole, similar increase trend of total ECs and decrease of REs with increase of the inlet concentrations as ethanethiol were observed.…”

“…Few researches have been reported to biologically treat thioanisole waste gas. It is worthwhile to point out that the various odorous pollutants always co-exist in real environment [27]. Nevertheless, in strong contrast to the level of understanding towards the degradation of single organic compound, little has been known regarding the biotreatment of waste gas mixture, especially the binary mixture gas of ethanethiol and DMDS and ternary mixture gas of ethanethiol, DMDS and thioanisole, which is more often encountered in the practical case.…”

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

“…Although a wide and various bioreactors can be selected, the principle of them is almost the same. 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).…”