Simultaneous Removal of H2S, NH3, and Ethyl Mercaptan in Biotrickling Filters Packed with Poplar Wood and Polyurethane Foam: Impact of pH During Startup and Crossed Effects Evaluation

Hernández, J.; Lafuente, Javier; Prado, Ó.J.; Gabriel, David

doi:10.1007/s11270-012-1126-4

Cited by 33 publications

(20 citation statements)

References 33 publications

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“…Although the direct inhibition of sulphur oxidising bacteria by H 2 S alone has not been noted, the reaction of SO 4 2À oxidised from H 2 S with another malodorous sewer gas, NH 3 , to form (NH 4 ) 2 SO 4 has been shown to inhibit both SOB (Nixon, 1997) and SRB (Pikaar et al, 2014). Ammonia gas was not monitored in this study, however this gas with H 2 S and volatile organic compounds make up typical constituents of sewer gases (Hernandez et al, 2012;Kim et al, 2013;Upadhyay et al, 2013) and may have also impacted the growth of both SRB and SOB. Our results show the potential roles played by the organic acid and H 2 S metabolites in the growth and metabolism of fungi and acidophilic bacteria.…”

Section: Effect Of H 2 S Concentrationmentioning

confidence: 81%

Biogenic acids produced on epoxy linings installed in sewer crown and tidal zones

Valix

Shanmugarajah

2015

Water Research

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Section: Effect Of H 2 S Concentrationmentioning

confidence: 81%

Biogenic acids produced on epoxy linings installed in sewer crown and tidal zones

Valix

Shanmugarajah

2015

Water Research

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“…The pH has a significant impact on treatment efficiency; microbial activity and colonization is disturbed by any modification of pH in the biofilter [39,40]. The pH was therefore monitored in the middle of each stratum, namely at 25 and 75 cm height, and showed a decrease in the two stratums (Fig.…”

Section: Influence Of Ph On the Removal Of H 2 S Dmds And Etshmentioning

confidence: 99%

Impact of nutrients supply and pH changes on the elimination of hydrogen sulfide, dimethyl disulfide and ethanethiol by biofiltration

Jaber

Anet²,

Amrane

et al. 2014

Chemical Engineering Journal

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h i g h l i g h t sThe treatment of sulfur odorous compounds in mixture, H 2 S, DMDS and EtSH by biofiltration was examined. Removal efficiencies of biofilters packed with pine bark and composted wood mulch were compared. The degradation of the three compounds decreased as follows: H 2 S > DMDS > EtSH. Contrarily to EtSH and DMDS, H 2 S removal was not affected by the lack of nutrients in the biofilter. pH decrease caused by H 2 SO 4 accumulation impacted EtSH and DMDS degradation contrarily to H 2 S removal. a b s t r a c tThe treatment of sulfur odorous compounds in mixture, hydrogen sulfide (H 2 S), dimethyl disulfide (DMDS) and ethanethiol (EtSH), by biofiltration was examined. A significant effort was focused on the impact of nutrients supply, without forgetting the effect of other parameters such as the pH, on the process performances. Removal efficiencies of three biofilters packed with pine bark and composted wood mulch and sprinkled by different nutritive solutions were compared.Owing to the biodegradability of H 2 S, its removal was not affected by the lack of nutrients in the biofilter. However, for EtSH and DMDS, considered as more recalcitrant, the influence of nutrients on biodegradation was clearly observed; it was enhanced when the supplementation in the watering solution was increased. Furthermore, EtSH removal yield increased from 80% in the absence of supplementation to an almost total removal in the presence of nutrients in the watering solution. The degradation of the three compounds decreased as follows: H 2 S > DMDS > EtSH. The impact of the pH of the packing materials was also underlined. The decrease in pH caused by the accumulation of sulfuric acid in the packing material, the most abundant product of the biological oxidation of sulfur compounds, led to a reduction of the elimination efficiencies of EtSH and DMDS; while the microorganisms involved in H 2 S degradation appeared active in a large pH range, from less than 3 to close to 9.

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“…Odor emissions are usually related to hydrogen sulfide (H 2 S), mercaptans (R-SH), organic sulfides (R-S-R), and disulfides (R-S-S-R) ( Barbosa et al 2002;Hernandez et al 2012;Zhang et al 2013). As far as mercaptan is concerned, ethyl mercaptan (EM) is always used as an intermediate and starting material in the manufacture of plastics, insecticides, and antioxidants and as an odorant to serve as a warning property for natural gas NRC US 2013).…”

Section: Introductionmentioning

confidence: 99%

“…To date, common studies have focused on the removal of EM using a continuous bioreactor ArellanoGarcia et al 2010;Hernandez et al 2012;Wan et al 2011). However, these studies showed that 100 % removal of EM could only be achieved when low loading rate was applied under higher empty bed residence times (EBRTs) of 1103 22 s. Therefore, isolation and identification of a highly efficient strain for EM biodegradation is of great importance to ensure its complete removal in an effective and economical bioreactor system.…”

Section: Introductionmentioning

confidence: 99%

Degradation of ethyl mercaptan and its major intermediate diethyl disulfide by Pseudomonas sp. strain WL2

Wang

Liu

et al. 2014

Appl Microbiol Biotechnol

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A Pseudomonas sp. strain WL2 that is able to efficiently metabolize ethyl mercaptan (EM) into diethyl disulfide (DEDS) through enzymatic oxidation was isolated from the activated sludge of a pharmaceutical wastewater plant. One hundred percent removal of 113.5 mg L(-1) EM and 110.3 mg L(-1) DEDS were obtained within 14 and 32 h, respectively. A putative EM degradation pathway that involved the catabolism via DEDS was proposed, which indicated DEDS were further mineralized into carbon dioxide (CO2), bacterial cells, and sulfate (SO4 (2-)) through the transformation of element sulfur and ethyl aldehyde. Degradation kinetics for EM and DEDS with different initial concentrations by strain WL2 were evaluated using Haldane-Andrews model with maximum specific degradation rates of 3.13 and 1.33 g g(-1) h(-1), respectively, and maximum degradation rate constants of 0.522 and 0.175 h(-1) using pseudo-first-order kinetic model were obtained. Results obtained that aerobic degradation of EM by strain WL2 was more efficient than those from previous studies. Substrate range studies of strain WL2 demonstrated its ability to degrade several mercaptans, disulfides, aldehydes, and methanol. All the results obtained highlight the potential of strain WL2 for the use in the biodegradation of volatile organic sulfur compounds (VOSCs).

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Simultaneous Removal of H2S, NH3, and Ethyl Mercaptan in Biotrickling Filters Packed with Poplar Wood and Polyurethane Foam: Impact of pH During Startup and Crossed Effects Evaluation

Cited by 33 publications

References 33 publications

Biogenic acids produced on epoxy linings installed in sewer crown and tidal zones

Biogenic acids produced on epoxy linings installed in sewer crown and tidal zones

Impact of nutrients supply and pH changes on the elimination of hydrogen sulfide, dimethyl disulfide and ethanethiol by biofiltration

Degradation of ethyl mercaptan and its major intermediate diethyl disulfide by Pseudomonas sp. strain WL2

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