New process for simultaneous removal of nitrogen and sulphur under anaerobic conditions

Fdz‐Polanco, F.; Fdz-Polanco, M.; Fernández, N.; Urueña, M. A.; Garcı́a, Pilar Garcı́a; Villaverde, S.

doi:10.1016/s0043-1354(00)00474-7

Cited by 121 publications

(78 citation statements)

References 2 publications

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“…This was not in line with the findings from Liu et al [17]. Both NH 4 + -N/ SO 4 2--S conversion ratio (at 15.96 ± 2.41) and n(TN)/n(TS) removal ratio (at 9.69±1.84) were far away from the theoretical value [10,17] when n(N)/n(S) was 4. At the same time, 38.7% of the converted NH 4 + -N was oxidized to NO 3 --N. Therefore, it is concluded that n(N)/n(S) had little effect on NH 4 + -N conversion efficiency.…”

Section: Figure 6 Effect Of N(n)/n(s) Ratio On Substrates Conversationcontrasting

confidence: 71%

“…Recent studies have found that the conversion of sulfur might be related to nitrate or ammonia [9,10], which brings new ideas for simultaneous removal of nitrogen and sulfur. Sulfide and nitrate can be removed simultaneously with dinitrogen and elemental sulfur as the product at anoxic condition, defined as a denitrifying sulfide removal (DSR) process.…”

Section: 03h O +mentioning

confidence: 99%

“…Fdz-Polanco et al [10,15] reported that ammonia and sulfate could be removed synchronously in an anaerobic fluidized bed reactor (AFBR) filled with granular activated carbon (GAC) when treating industrial wastewater that was rich in organic matter, nitrogen and sulfate. Such a procedure was named sulfate reduction and ammonia oxidation (SURAMOX), main chemical reaction of which is shown in Equation (2) …”

Section: 03h O +mentioning

confidence: 99%

“…But there are many unanswered questions related to the characteristics of this reaction. For instance, some researchers considered that S 2-should be the intermediate product [10,[18][19] due to S 2-detection in heterotrophic environment. While other researchers considered S 2-should not be the intermediate product [17] due to no S 2-observed in autotrophic environment.…”

Section: ∆Gmentioning

confidence: 99%

“…According to the detected HS -/S 2-, Fdz-Polanco et al [10] speculated the equations might be that as follows:…”

Section: The Materials Balance During Sulfate Reductionammonia Oxidationmentioning

confidence: 99%

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S115 Characteristics of Sulfate Reduction–Ammonia Oxidation under Anaerobic Conditions

YUAN¹,

HUANG²,

LI³

et al. 2015

JRST

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ABSTRACT:The sulfate reduction-ammonia oxidation reaction with ANAMMOX sludge at autotrophic condition was investigated. It was found that the pH level decreased, and elemental sulfur and dinitrogen were produced at the end of this process, while NO 3 --N was a byproduct. A lower ratio of n(N) to n(S) can improve SO 4 2--S conversion ratio where a larger portion of NH 4 + -N was oxidized into NO 3 --N, resulting in a decreased removal ratio of n(TN)/n(TS). This indicates that ammonia can be oxidized into NO 2 --N or NO 3 --N by sulfate, then the residual NH 4 + -N and the produced NO 2 --N would be removed via ANAMMOX.

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Section: Figure 6 Effect Of N(n)/n(s) Ratio On Substrates Conversationcontrasting

confidence: 71%

Section: 03h O +mentioning

confidence: 99%

Section: 03h O +mentioning

confidence: 99%

Section: ∆Gmentioning

confidence: 99%

“…According to the detected HS -/S 2-, Fdz-Polanco et al [10] speculated the equations might be that as follows:…”

Section: The Materials Balance During Sulfate Reductionammonia Oxidationmentioning

confidence: 99%

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S115 Characteristics of Sulfate Reduction–Ammonia Oxidation under Anaerobic Conditions

YUAN¹,

HUANG²,

LI³

et al. 2015

JRST

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Biogeochemistry of Nitrogen in the Marine System with Special Emphasis on the Arabian Sea and Bay of Bengal

Sivan

Mazumdar

Peketi

et al. 2022

Systems Biogeochemistry of Major Marine Biomes

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Eliminating non-renewable CO2 emissions from sewage treatment: An anaerobic migrating bed reactor pilot plant study

Hartley

Lant

2006

Biotechnol. Bioeng.

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The aim of this work was to demonstrate at pilot scale a high level of energy recovery from sewage utilising a primary Anaerobic Migrating Bed Reactor (AMBR) operating at ambient temperature to convert COD to methane. The focus is the reduction in non-renewable CO(2) emissions resulting from reduced energy requirements for sewage treatment. A pilot AMBR was operated on screened sewage over the period June 2003 to September 2004. The study was divided into two experimental phases. In Phase 1 the process operated at a feed rate of 10 L/h (HRT 50 h), SRT 63 days, average temperature 28 degrees C and mixing time fraction 0.05. In Phase 2 the operating parameters were 20 L/h, 26 days, 16 degrees C and 0.025. Methane production was 66% of total sewage COD in Phase 1 and 23% in Phase 2. Gas mixing of the reactor provided micro-aeration which suppressed sulphide production. Intermittent gas mixing at a useful power input of 6 W/m(3) provided satisfactory process performance in both phases. Energy consumption for mixing was about 1.5% of the energy conversion to methane in both operating phases. Comparative analysis with previously published data confirmed that methane supersaturation resulted in significant losses of methane in the effluent of anaerobic treatment systems. No cases have been reported where methane was considered to be supersaturated in the effluent. We have shown that methane supersaturation is likely to be significant and that methane losses in the effluent are likely to have been greater than previously predicted. Dissolved methane concentrations were measured at up to 2.2 times the saturation concentration relative to the mixing gas composition. However, this study has also demonstrated that despite methane supersaturation occurring, micro-aeration can result in significantly lower losses of methane in the effluent (<11% in this study), and has demonstrated that anaerobic sewage treatment can genuinely provide energy recovery. The goal of demonstrating a high level of energy recovery in an ambient anaerobic bioreactor was achieved. An AMBR operating at ambient temperature can achieve up to 70% conversion of sewage COD to methane, depending on SRT and temperature.

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New process for simultaneous removal of nitrogen and sulphur under anaerobic conditions

Cited by 121 publications

References 2 publications

S115 Characteristics of Sulfate Reduction–Ammonia Oxidation under Anaerobic Conditions

S115 Characteristics of Sulfate Reduction–Ammonia Oxidation under Anaerobic Conditions

Biogeochemistry of Nitrogen in the Marine System with Special Emphasis on the Arabian Sea and Bay of Bengal

Eliminating non-renewable CO2 emissions from sewage treatment: An anaerobic migrating bed reactor pilot plant study

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