Removal of hydrogen sulfide by complete aerobic oxidation in acidic biofiltration

Chaiprapat, Sumate; Mardthing, Rohana; Kantachote, Duangporn; Karnchanawong, Seni

doi:10.1016/j.procbio.2010.09.007

Cited by 100 publications

(51 citation statements)

References 18 publications

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“…The removal efficiency at this stage reduced to less than 10 % and did not improve after more than 10 days of continued operation under the same conditions. This is similar to examples in the literature which show a drop in removal efficiency of a biofilter at higher concentrations of H2S because of sulphate accumulation which inhibits microbial activity (Ben Jaber et al 2016;Chaiprapat et al 2011;Romero Hernandez et al 2013;Solcia et al 2014;Yang and Allen 1994).…”

Section: Removal Of H2s From the Inlet Airsupporting

confidence: 89%

“…The maximum elimination capacity of 16.3 g m −3 h −1 in this study is within the range of similar lab-scale biofilters (Chaiprapat et al 2011;Converse et al 2003;Kim et al 2008;Park et al 2011;Roshani et al 2012;Solcia et al 2014). …”

Section: Removal Of H2s From the Inlet Airsupporting

confidence: 76%

“…For example, a study conducted by Dumont et al showed that a biofilter using expanded schist for the removal of H2S had a pressure drop of 10-80 Pa m −1 , but the gas velocity in that study was considerably higher (89-229 m h −1 ) (Dumont et al 2012a). The conversion of H2S to H2SO4 is dependent on the ratio of H2S and O2, and since the intention of this study is to harvest H2SO4, it was important to avoid the formation of anaerobic zones inside the biofilter (Chaiprapat et al 2011;Jensen and Webb 1995). In their study of aerobic acidic biofilters for the removal of H2S, Chaiprapat et al showed that the highest efficiency of conversion of H2S to sulphate or sulphuric acid was obtained when the H2S to O2 ratio was 1:4 (Chaiprapat et al 2011).…”

Section: Removal Of H2s From the Inlet Airmentioning

confidence: 98%

“…In the case of biofilters used to remove hydrogen sulphide in an aerobic environment, the overall biological reaction that occurs is given below (Oyarzun et al 2003;Wang et al 2003): H2S+2O2→SO4 2− +2H + H2S can be oxidised to either elemental sulphur or SO4 2− depending on the ratio of H2S to O2in the treated air (Chaiprapat et al 2011;Jensen and Webb 1995). If the oxygen is supplied in a limited amount, incomplete oxidation of H2S produces elemental sulphur (Chaiprapat et al 2011;Jensen and Webb 1995). Microorganisms that can oxidise H2S include Thiobacillus denitrificans, Thiobacillus thioparus and Acidithiobacillus thiooxidans.…”

Section: Introductionmentioning

confidence: 99%

“…A common strategy to control pH in conventional biofilters is to wash out the accumulated acidity in the biofilm with a buffered media or chemicals like sodium hydroxide or calcium carbonate (Jover et al 2012;Shareefdeen et al 2003b;Solcia et al 2014). This leads to production of as much as 2000 mL L −1 day −1 of neutral or slightly acidic leachate (pH = 2) which is treated as waste and requires proper disposal (Abdehagh et al 2011;Chaiprapat et al 2011;Park et al 2011;Solcia et al 2014). Instead of considering this leachate as waste, the leachate can be thought of as a source of sulphur.…”

Section: Introductionmentioning

confidence: 99%

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Biofilter for generation of concentrated sulphuric acid from H2S

Rabbani

Charles

Kayaalp

et al. 2016

Environ Sci Pollut Res

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Biofilters are used for the conversion of odorous hydrogen sulphide to odourless sulphate in wastewater treatment plants under the right conditions of moisture and pH. One of the consequences of maintaining the suitable pH and moisture content is the production of large volumes of weakly acidic leachate. This paper presents a biofilter with a maximum H2S elimination capacity of 16.3 g m −3 h −1 and removal efficiency greater than 95 % which produces small volumes (1 mL of solution L −1 of reactor day −1 ) of sulphuric acid with a concentration greater than 5.5 M after 150 days of continuous operation. The concentrated sulphuric acid was produced by intermittently trickling a minimum amount of nutrient solution down the upflow biofilter which created a moisture and pH gradient within the biofilter resulting in an environment at the top for the bacterial conversion of H2S, while sulphuric acid was accumulated at the base. Genetic diversity profiling of samples taken from different sections of the biofilter confirms that the upper sections of the biofilter had the best environment for the bacteria to convert H2S to sulphate. The formation of concentrated sulphuric acid presents an opportunity for the recovery of sulphur from the waste stream as a usable product.

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Section: Removal Of H2s From the Inlet Airsupporting

confidence: 89%

Section: Removal Of H2s From the Inlet Airsupporting

confidence: 76%

Section: Removal Of H2s From the Inlet Airmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Biofilter for generation of concentrated sulphuric acid from H2S

Rabbani

Charles

Kayaalp

et al. 2016

Environ Sci Pollut Res

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show abstract

Biodesulfurization of Natural Gas

2018

Biodesulfurization in Petroleum Refining

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Upgrading strategies for effective utilization of biogas

Salihu

Alam

2015

Env Prog and Sustain Energy

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Production of biogas is based on anaerobic digestion of different renewable raw materials including human, animal, agricultural, industrial, and municipal wastes. In addition to methane content, biogas contains carbon dioxide along with water vapor, hydrogen sulfide, ammonia, and depending on the raw materials siloxane can be present. Thus, different purification and upgrading strategies are necessary in order to enhance the methane content; this review presents some of the upgrading technologies for practical removal of major contaminants in biogas. Recent development in membrane technology with high selectivity and permeability could serve as a boost in search for the most efficient biogas upgrading process capable of meeting the requirements for its use in vehicle fuel as well as incorporation in the natural gas grid. © 2015 American Institute of Chemical Engineers Environ Prog, 34: 1512–1520, 2015

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Removal of hydrogen sulfide by complete aerobic oxidation in acidic biofiltration

Cited by 100 publications

References 18 publications

Biofilter for generation of concentrated sulphuric acid from H2S

Biofilter for generation of concentrated sulphuric acid from H2S

Biodesulfurization of Natural Gas

Upgrading strategies for effective utilization of biogas

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