A mathematical model of a high sulphate wastewater anaerobic treatment system

Knobel, Anthony N.; Lewis, Alison

doi:10.1016/s0043-1354(01)00209-3

Cited by 60 publications

(64 citation statements)

References 61 publications

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“…Leachate was pumped to the bottom inlet of the reactor using a peristaltic pump connected to a timer to keep leachate flow rate at a controlled 0.4 l/day. COD/(SO 4 2− ) ratio was varied over the different experimental phases. During the acclimatization phase (phase 1), the reactor was fed with fivefolddiluted leachate so that influent COD was 8.25 g/l and sulfate concentration was increased to 2.03 g/l by adding sodium sulfate to keep a COD/(SO 4 2− ) ratio of 4.06.…”

Section: Bioreactor Operating Conditionsmentioning

confidence: 99%

“…Industrial wastewaters, particularly those originating from pharmaceutical and chemical units or from edible oil, paper, pulp and molasses-producing plants, contain high concentrations of sulfate in addition to the organic load [1][2][3][4][5][6][7]. Sulfate-containing wastewaters are normally treated by employing physicochemical and biological methods.…”

Section: Introductionmentioning

confidence: 99%

“…Biologically, sulfate-containing wastewaters are generally treated by anaerobic processes [1,2,[7][8][9]. The anaerobic process is mediated by a sequential series of fermentation reactions revealed by diverse groups of microorganisms in which hydrocarbons are converted to simple molecules and ultimately to CO 2 and CH 4 . Metabolic interactions between the various groups of organisms are essential to successful and complete mineralization of the organic molecules.…”

Section: Introductionmentioning

confidence: 99%

“…Mizuno et al [11] reported that when COD/(SO 4 2− ) ratio was higher than 6, methanogens predominated, but at ratios less than 1.5, SRB were more competitive, resulting in a significant increase of free H 2 S that severely affects methanogens but not sulfate reducers. According to Lens et al [12], a ratio of 0.67 or higher contains enough COD for [13].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Anaerobic degradation of landfill leachate using an upflow anaerobic fixed-bed reactor with microbial sulfate reduction

Thabet

Bouallagui

Cayol

et al. 2009

Journal of Hazardous Materials

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Section: Bioreactor Operating Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Anaerobic degradation of landfill leachate using an upflow anaerobic fixed-bed reactor with microbial sulfate reduction

Thabet

Bouallagui

Cayol

et al. 2009

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…1, 2 and 3 (ASMs) [18], published by the International Water Association, are able to describe the removal of organic carbon and nitrogen compounds in the reactor (R2 and R3 in Figure 1). Mathematical models have also been applied to predict sulfate removal during industrial wastewater treatment (R1, R6 and R7 in Figure 1) [19][20][21][22][23], as extensions of Anaerobic Digestion Model No. 1 (ADM1) [24].…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling of simultaneous carbon-nitrogen-sulfur removal from industrial wastewater

Chen

Wang

et al. 2017

Journal of Hazardous Materials

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(Nan-Qi Ren) 2 Highlights:1. Simultaneous C-N-S removal from industrial wastewater was mathematically modeled 2. Interactions between SRB, NRB, SOB, FB and MPA were depicted in the model 3. Kinetic parameters for competitive coefficient between SRB and NRB were best estimated 4. The developed mode was the first simulation tool for complicated C-N-S dynamics 5. The model was versatile and feasible to predict relevant processes (e.g., SR-SO, DSR)ABSTRACT A mathematical model of carbon, nitrogen and sulfur removal (C-N-S) from industrial wastewater was constructed considering the interactions of sulfate-reducing bacteria (SRB), sulfide-oxidizing bacteria (SOB), nitrate-reducing bacteria (NRB), facultative bacteria (FB), and methane producing archaea (MPA). For the kinetic network, the bioconversion of C-N by heterotrophic denitrifiers (NO3 -→NO2 -→N2), and that of C-S by SRB (SO4 2-→S 2-) and SOB (S 2-→S 0 ) was proposed and calibrated based on batch experimental data. The model closely predicted the profiles of nitrate, nitrite, sulfate, sulfide, lactate, acetate, methane and oxygen under both anaerobic and micro-aerobic conditions. The best-fit kinetic parameters had small 95% confidence regions with mean values approximately at the center. The model was further validated using independent data sets generated under different operating conditions. This work was the first successful mathematical modeling of simultaneous C-N-S removal from industrial wastewater and more importantly, the proposed model was proven feasible to simulate other relevant processes, such as sulfate-reducing, sulfide-oxidizing process (SR-SO) and denitrifying sulfide removal (DSR) process. The model developed is expected to enhance our ability to predict the treatment of carbon-nitrogen-sulfur contaminated industrial wastewater.

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An alternative approach of UASB dynamic modeling

2007

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in Wiley InterScience (www.interscience.wiley.com).A mathematical model was developed and validated to simulate the dynamic behavior of a UASB reactor. This model took into consideration all the biological and physicochemical reactions. Seven microbial populations were selected using Monod kinetics where inhibition terms were added. The overall biological reactions were determined by first evaluating the reactions for energy and synthesis separately and then adding them together. For each differential time interval, the biomass produced was estimated from the stoichiometry of these reactions. The feasibility of each reaction was determined by thermodynamic calculations. A thermodynamic solution was suggested for the microorganisms that are able to follow more than one catabolic routes and produce several products in spite of the fact that they consume just one substrate. All the reactions that may be performed were realized according to the relative percentage of their free energies. The validation of the model was based on a set of dynamical experiments designed to cover a wide spectrum of operating conditions that are likely to take place in the practical operation of a UASB plant. The model can be a useful tool for the prediction of process performance in transient conditions, even in failure, and can be used to assist in the operation of biogas plants.

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A mathematical model of a high sulphate wastewater anaerobic treatment system

Cited by 60 publications

References 61 publications

Anaerobic degradation of landfill leachate using an upflow anaerobic fixed-bed reactor with microbial sulfate reduction

Anaerobic degradation of landfill leachate using an upflow anaerobic fixed-bed reactor with microbial sulfate reduction

Mathematical modeling of simultaneous carbon-nitrogen-sulfur removal from industrial wastewater

An alternative approach of UASB dynamic modeling

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