Control of dissolved CH4 in a municipal UASB reactor effluent by means of a desorption – Biofiltration arrangement

Huete, Alfredo; Cobos-Vasconcelos, Daniel de los; Gómez-Borraz, Tania L.; Morgan-Sagastume, Juan Manuel; Noyola, A.

doi:10.1016/j.jenvman.2017.06.061

Cited by 26 publications

(16 citation statements)

References 24 publications

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“…One of the main advantages of UASB system is represented by the production of methane and therefore the feasibility of energy recovery. This aspect contributes to the significant widespread of these reactors in low–middle-income countries [ 13 , 14 ]. This is a crucial aspect since water sanitation and energy production are inserted in the Sustainable Development Goals (SDGs) of the United Nations (SDG 6 and SDG 7, respectively) [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Applications of Up-Flow Anaerobic Sludge Blanket (UASB) and Characteristics of Its Microbial Community: A Review of Bibliometric Trend and Recent Findings

Collivignarelli

Abbà

Caccamo

et al. 2021

IJERPH

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The interest in research on up-flow anaerobic sludge blanket (UASB) reactors is growing. The meta-analysis of bibliometric data highlighted the growing interest in four diverse topics: (i) energy recovery production; (ii) combination with other treatments; (iii) the study of processes for the removal of specific pollutants and, (iv) characterization of microbial community and granular sludge composition. In particular, the papers published in the first 6 months of 2021 on this process were selected and critically reviewed to highlight and discuss the results, the gaps in the literature and possible ideas for future research. Although the state of research on UASB is to be considered advanced, there are still several points that will be developed in future research such as the consolidation of the results obtained on a semi-industrial or real scale, the use of real matrices instead of synthetic ones and a more in-depth study of the effect of substances such as antibiotics on the microbiota and microbiome of UASB granular biomass. To date, few and conflicting data about the environmental footprint of UASB are available and therefore other studies on this topic are strongly suggested.

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Section: Introductionmentioning

confidence: 99%

Applications of Up-Flow Anaerobic Sludge Blanket (UASB) and Characteristics of Its Microbial Community: A Review of Bibliometric Trend and Recent Findings

Collivignarelli

Abbà

Caccamo

et al. 2021

IJERPH

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“…In this case, the waste gas had a CH 4 content of 22% v/v , above the minimum content of 20% v/v recommended for combustion and heat production (Browell et al 2009). Compared with Huete et al (2018), the better D-H 2 S desorption performance reported by Santo (2017) (pKa 1 ), and by the lower HLR considered in this study (0.10-1.00 m 3 m −2 min −1 ). In a demonstration-scale desorption chamber packed with electrical corrugated pipe (diameter = 35 cm; packed height = 1.0 m), Machado (2018) found D-H 2 S and D-CH 4 desorption efficiencies of 87-90% and 75-82%, respectively, at G/L ratios in the range of 2.3-4.0, and HLR of 0.15-0.27 m 3 m −2 min −1 .…”

Section: Packed Desorption Chambermentioning

confidence: 49%

“…The waste gas had an H 2 S content of approximately 420 ppm. The low D-H 2 S desorption could be associated with the pH of the UASB reactor effluent, which was 8.0 ± 0.3 during the experiments (Huete et al 2018), and with the HLR considered in this study (0.85-1.70 m 3 m −2 min −1 ).…”

Section: Packed Desorption Chambermentioning

confidence: 70%

“…1c). Huete et al (2018) used the Onda model (Onda et al 1968) to design a packed desorption chamber at a pilot scale (inner diameter = 0.10 m and packed height = 1.0 m). The tower was packed with plastic Pall rings (diameter = 2.5 cm; specific area = 280 m 2 m −3 ; void fraction = 0.90).…”

Section: Packed Desorption Chambermentioning

confidence: 99%

“…When operated at G/L ratios of 0.5 and 1.0, 99% of the D-CH 4 (12.5 mg L −1 ± 3.52 mg L −1 ) was removed from the UASB reactor effluent and waste gases with CH 4 concentrations of 4.3% v/v and 2.7% v/v , respectively, were achieved. In terms of D-H 2 S, Huete et al (2018) reported desorption efficiencies of 28% and 32% at G/L ratios of 0.5 and 1.0, respectively, considering an average of 15 mg L −1 D-H 2 S in UASB reactor effluent. The waste gas had an H 2 S content of approximately 420 ppm.…”

Section: Packed Desorption Chambermentioning

confidence: 99%

See 2 more Smart Citations

Mitigation of diffuse CH4 and H2S emissions from the liquid phase of UASB-based sewage treatment plants: challenges, techniques, and perspectives

Centeno-Mora

Fonseca

Andreão

et al. 2020

Environ Sci Pollut Res

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Upflow anaerobic sludge blanket (UASB) reactors are considered to be a sustainable and well-established technology for sewage treatment in warm climate countries. However, gases dissolved in the effluent of these reactors, CH 4 and H 2 S in some instances, are a major drawback. These dissolved gases can be emitted into the atmosphere downstream of the anaerobic reactors, resulting in odour nuisance and, in the case of H 2 S, corrosion, while in the case of CH 4 , increasing greenhouse gas emissions with a significant loss of potentially recoverable energy. In this sense, this study aims to provide a critical review of the recent efforts to control CH 4 and H 2 S dissolved in UASB reactor effluents, with a focus on the different available techniques. Different desorption techniques have been tested for the removal/recovery of dissolved CH 4 and H 2 S: diffused aeration, simplified desorption chamber, packed desorption chamber, closed downflow hanging sponge reactor, membrane contactor, and vacuum desorption chamber. Other recent publications addressing the oxidation of these compounds in biological posttreatments with simultaneous nitrification/denitrification of ammonia were also discussed. Additionally, the rationale of CH 4 recovery was determined by energy balance and carbon footprint approaches, and the H 2 S removal was examined by modelling its emission and atmospheric dispersion.

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Exploring the potential of biofiltration for mitigating harmful gaseous emissions from small or old landfills: a review

Merouani,

Ferdowsi,

Buelna

et al. 2024

Biodegradation

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Control of dissolved CH4 in a municipal UASB reactor effluent by means of a desorption – Biofiltration arrangement

Cited by 26 publications

References 24 publications

Applications of Up-Flow Anaerobic Sludge Blanket (UASB) and Characteristics of Its Microbial Community: A Review of Bibliometric Trend and Recent Findings

Applications of Up-Flow Anaerobic Sludge Blanket (UASB) and Characteristics of Its Microbial Community: A Review of Bibliometric Trend and Recent Findings

Mitigation of diffuse CH4 and H2S emissions from the liquid phase of UASB-based sewage treatment plants: challenges, techniques, and perspectives

Exploring the potential of biofiltration for mitigating harmful gaseous emissions from small or old landfills: a review

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