Catalytic removal of sodium sulfide from aqueous solutions and application to wastewater treatment

Ueno, Yasuo

doi:10.1016/0043-1354(76)90173-1

Cited by 4 publications

(2 citation statements)

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“…18 For this latter process, catalysts may be used to favor the reaction towards sulfate or elemental sulfur formation. Catalytic removal of sodium sulde from aqueous solutions by catalytic aerobic oxidation with hydroquinone/ferric salts 19 or with carbon materials or carbon materials/ferric salts has also been reported. 20,21 Microorganisms can also be used to oxidize sulde into sulfur-containing species (mainly elemental sulfur, poly-suldes, thiosulfates, thionates and sulfates).…”

Section: Introductionmentioning

confidence: 99%

Oxidized few layer graphene and graphite as metal-free catalysts for aqueous sulfide oxidation

et al. 2013

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Section: Introductionmentioning

confidence: 99%

Oxidized few layer graphene and graphite as metal-free catalysts for aqueous sulfide oxidation

et al. 2013

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“…Indeed, sulfide containing wastewaters are generated by a plethora of industries such as petrochemical plants, tanneries, viscose rayon manufactures or by an anaerobic treatment of sulfate-containing wastewater. The removal of sulfide from wastewater can be mediated by a number of methods such as membrane process, [1] chemical oxidation with hydrogen peroxide, [2] adsorption with activated carbon, [3,4] catalytic method, [5] electro coagulation, [6] combined with anaerobic ammonium oxidation (ANAMMOX) [7−9] and aerobic treatment process. Of all the afore-mentioned removal methods, aerobic treatment process is the most widely used because of its simplicity, commercial viability and cost-effective potential.…”

Section: Introductionmentioning

confidence: 99%

Investigation on laboratory and pilot-scale airlift sulfide oxidation reactor under varying sulfide loading rate

Pokasoowan¹,

Kanitchaidecha²,

Krishna³

et al. 2009

Journal of Environmental Science and Health, Part A

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Airlift bioreactor was established for recovering sulfur from synthetic sulfide wastewater under controlled dissolved oxygen condition. The maximum recovered sulfur was 14.49 g/day when sulfide loading rate, dissolved oxygen (DO) and pH values were 2.97 kgHS(-)/m(3)-day, 0.2-1.0 mg/L and 7.2-7.8, respectively. On the other hand, the increase in recovered sulfur reduced the contact surface of sulfide oxidizing bacteria which affects the recovery process. This effect caused to reduce the conversion of sulfide to sulfur. More recovered sulfur was produced at high sulfide loading rate due to the change of metabolic pathway of sulfide-oxidizing bacteria which prevented the toxicity of sulfide in the culture. The maximum activity in this system was recorded to be about 3.28 kgS/kgVSS-day. The recovered sulfur contained organic compounds which were confirmed by the results from XRD and CHN analyzer. Afterwards, by annealing the recovered sulfur at 120 degrees C for 24 hrs under ambient Argon, the percentage of carbon reduced from 4.44% to 0.30%. Furthermore, the percentage of nitrogen and hydrogen decreased from 0.79% and 0.48% to 0.00% and 0.14%, respectively. This result showed the success in increasing the purity of recovered sulfur by using the annealing technique. The pilot-scale biological sulfide oxidation process was carried out using real wastewater from Thai Rayon Industry in Thailand. The airlift reactor successfully removed sulfide more than 90% of the influent sulfide at DO concentration of less than 0.1 mg/L, whereas the elementary sulfur production was 2.37 kgS/m(3)-day at sulfide loading rate of 2.14 kgHS(-)/m(3)-day. The sulfur production was still increasing as the reactor had not yet reached its maximum sulfide loading rate.

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Chapter 8 Chemical Oxidation and Reduction

1979

Industrial Waste Water Management

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Catalytic removal of sodium sulfide from aqueous solutions and application to wastewater treatment

Cited by 4 publications

References 1 publication

Oxidized few layer graphene and graphite as metal-free catalysts for aqueous sulfide oxidation

Oxidized few layer graphene and graphite as metal-free catalysts for aqueous sulfide oxidation

Investigation on laboratory and pilot-scale airlift sulfide oxidation reactor under varying sulfide loading rate

Chapter 8 Chemical Oxidation and Reduction

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