Bioconversion of High Concentrations of Hydrogen Sulfide to Elemental Sulfur in Airlift Bioreactor

Zytoon, Mohamed A.; Al-Zahrani, Abdulrahim A.; Noweir, Madbuli H.; El-Marakby, Fadia A.

doi:10.1155/2014/675673

Cited by 19 publications

(5 citation statements)

References 44 publications

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“…al., 2016), energy consumption and consequential production of secondary pollutants (Watsuntorn, et. al., 2017;Zytoon, et. al., 2014).…”

Section: Characterization and Quality Analysis Of Petroleum Refinery mentioning

confidence: 99%

Integrated co-cultured bacterial strains capabilities to aqueous sulfide and chemical oxygen demand mitigation from high-strength petroleum refinery wastewater

Mani¹,

Aziz²

2019

Nig. J. Biotechnol

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The heterogeneous nature of petroleum refinery based wastewater (PRW) couple with the documented paucity of the classical physicochemical mitigation approaches were behind the quest for a cost-effective and ecofriendly alternative with minimum negative effects. The toxic and inhibitory substances contained in PRW have made its treatment strenuous using a simple pure culture. A novel integrated bacterial mixed culture (BMC), Pseudomonas putida (ATCC 49128) and Bacillus cereus (ATCC 14579) with traceable imprints in biodegradation of high-strength PRW was proposed as a suitable alternative for sulfide oxidation and COD reduction with a potential alternative to classical physicochemical mitigation approaches. Comparative biodegradation potential of two acclaimed bacteria mixed-culture regimen was evaluated. The degree of inhibition cast was assessed based on the effectiveness of BMC to remove the targeted compounds (aqueous hydrogen sulfide and COD) within the assigned period of 8 hours hydraulic retention time (HRT). The PRW was found to contained initial concentration of 8,155 ppm COD, and 500 ppm sulfide, coupled with other refractory substances. The experiment was repeated batch-wise under defined optimal conditions of 0.25 L/min O , 2 o the temperature of 30 C, agitation of 140 rpm at 8 hours retention time. The results obtained indicated 97.47±1.7 % (mg/L) COD reduction and 99.75±1.8 (ppm) sulfide removal efficiency (RE). In addition, the SEM analysis revealed further the potential of BMC to degrade sulfide from PRW to economically feasible elemental sulfur species, while EDXS demonstrated a proportionate elemental composition revealing appreciable sulfur content and high organic carbon accumulation. Despite the expected toxicity and inhibitory effect of the medium, an overwhelming biodegradation was achieved disproportionately, hence the model can be suggested for further research of repulsive wastewaters.

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“…al., 2016), energy consumption and consequential production of secondary pollutants (Watsuntorn, et. al., 2017;Zytoon, et. al., 2014).…”

Section: Characterization and Quality Analysis Of Petroleum Refinery mentioning

confidence: 99%

Integrated co-cultured bacterial strains capabilities to aqueous sulfide and chemical oxygen demand mitigation from high-strength petroleum refinery wastewater

Mani¹,

Aziz²

2019

Nig. J. Biotechnol

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“…Traditional physicochemical technologies have been employed for the treatment of gaseous emissions containing VSCs of waste and/or sour gas streams. However, these methods in contrast to biological methods (biodesulfurization) [2,10], which are based on the oxidation of H 2 S by sul de oxidizing bacteria (SOB), are not very environmentally friendly and cost-effective due to high energy consumption for operating at high pressure and temperature [6,11].…”

Section: Introductionmentioning

confidence: 99%

Assessing the Efficiency and Microbial Diversity of H2S-removing Biotrickling Filters at Various pH Conditions

Rouhollahi,

Giyahchi,

Dastgheib

et al. 2024

Preprint

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Reduced sulfur compounds such as H2S are extremely toxic and highly corrosive, produced in many industrial activities. The biological desulfurization process has been established to be a technically and economically effective alternative to traditional physicochemical processes. This study aimed to investigate the operation of three parallel biotrickling filters (BTFs) in removing H2S at different pH conditions (haloalkaliphilic, neutrophilic, and acidophilic) and their associated microbial population in the biodesulfurization process. BTF columns were inoculated with enriched inoculum and experiments were performed by gradually reducing Empty Bed Retention Time (EBRT) and increasing inlet concentration (Ci). The maximum Removal Efficiency (RE) and Maximum Elimination Capacity (EC) in EBRT 60s for haloalkaline, neutral and acidic conditions were, 91% and 179.5 g S-H2S m-3 h-1, 85.7%, and 141 g S-H2S m-3 h-1, 88% and 145 g S-H2S m-3 h-1 respectively. For visualizing the attached microbial biofilms on pall rings, Scanning Electron Microscopy (SEM) was used and microbial community structure analysis by NGS showed that the most abundant phyla in haBTF, nBTF, and aBTF belong to gammaproteobacteria, betaproteobacteria, and acidithiobacillia, respectively. The alpha analysis according to the Shannon and Simpson indexes showed a lower diversity of bacteria in the aBTF reactor than that of nBTF and haBTF and beta analysis indicated a different composition of bacteria in haBTF compared to the other two filters. These results indicated that the proper performance of BTF under haloalkaliphilic (natron) conditions is the most effective way for H2S removal from air pollutants of different industries.

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“…Traditional physicochemical technologies have been employed for the treatment of gaseous emissions containing VSCs of waste and/or sour gas streams. However, these methods in contrast to biological methods (biodesulfurization) [ 2 , 10 ], which are based on the oxidation of H 2 S by sulfide oxidizing bacteria (SOB), are not very environmentally friendly and cost-effective due to high energy consumption for operating at high pressure and temperature [ 6 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Assessing the efficiency and microbial diversity of H2S-removing biotrickling filters at various pH conditions

Rouhollahi,

Giyahchi,

Dastgheib

et al. 2024

Microb Cell Fact

View full text Add to dashboard Cite

This study aimed to investigate the operation of three parallel biotrickling filters (BTFs) in removing H2S at different pH conditions (haloalkaliphilic, neutrophilic, and acidophilic) and their associated microbial population in the biodesulfurization process. BTF columns were inoculated with enriched inoculum and experiments were performed by gradually reducing Empty Bed Retention Time (EBRT) and increasing inlet concentration in which the maximum removal efficiency and maximum elimination capacity in EBRT 60 s reached their maximum level in haloalkaline condition (91% and 179.5 g S-H2S m−3 h−1). For visualizing the attached microbial biofilms on pall rings, Scanning Electron Microscopy (SEM) was used and microbial community structure analysis by NGS showed that the most abundant phyla in haBTF, nBTF, and aBTF belong to Gammaproteobacteria, Betaproteobacteria, and Acidithiobacillia, respectively. Shannon and Simpson indexes evaluation showed a lower diversity of bacteria in the aBTF reactor than that of nBTF and haBTF and beta analysis indicated a different composition of bacteria in haBTF compared to the other two filters. These results indicated that the proper performance of BTF under haloalkaliphilic conditions is the most effective way for H2S removal from air pollutants of different industries. Graphical Abstract

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Bioconversion of High Concentrations of Hydrogen Sulfide to Elemental Sulfur in Airlift Bioreactor

Cited by 19 publications

References 44 publications

Integrated co-cultured bacterial strains capabilities to aqueous sulfide and chemical oxygen demand mitigation from high-strength petroleum refinery wastewater

Integrated co-cultured bacterial strains capabilities to aqueous sulfide and chemical oxygen demand mitigation from high-strength petroleum refinery wastewater

Assessing the Efficiency and Microbial Diversity of H2S-removing Biotrickling Filters at Various pH Conditions

Assessing the efficiency and microbial diversity of H2S-removing biotrickling filters at various pH conditions

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