Biotechnological Treatment of Sulfate-Rich Wastewaters

Lens, P.N.L.; Visser, André W.; Janssen, A.J.H.; Pol, L.W. Hulshoff; Lettinga, G.

doi:10.1080/10643389891254160

Cited by 490 publications

(273 citation statements)

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“…However, high sulfate concentration could unbalance the natural sulfur cycle (Lens et al 1998). Wastewater containing sulfate is normally treated with physicochemical and biological methods.…”

Section: Introductionmentioning

confidence: 99%

Performance and granulation in an upflow anaerobic sludge blanket (UASB) reactor treating saline sulfate wastewater

et al. 2013

Biodegradation

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An upflow anaerobic sludge blanket reactor was employed to treat saline sulfate wastewater. Mesophilic operation (35 ± 0.5°C) was performed with hydraulic retention time fixed at 16 h. When the salinity was 28 g L -1 , the chemical oxygen demand and sulfate removal efficiencies were 52 and 67 %, respectively. The salinity effect on sulfate removal was less than that on organics removal. The methane productions were 887 and 329 cm 3 L -1 corresponding to the NaCl concentrations of 12 and 28 g L -1 , respectively. High salinity could stimulate microbes to produce more extracellular polymeric substances (EPSs) and granulation could be performed better. Besides, with the high saline surroundings, a great deal of Na ? compressed the colloidal electrical doublelayer, neutralized the negative charge of the sludge particles and decreased their electrostatic repulsion.The repulsion barrier disappeared and coagulation took place. The maximum size of granules was 5 mm, which resulted from the coupled triggering forces of high EPSs and Na ? contents. Sulfate-reducing bacteria (SRB) were dominant in the high saline surroundings while the methane-producing archaea dominated in the low saline surroundings. The SRB were affected least by the salinity.

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Section: Introductionmentioning

confidence: 99%

Performance and granulation in an upflow anaerobic sludge blanket (UASB) reactor treating saline sulfate wastewater

et al. 2013

Biodegradation

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“…In an anaerobic/anoxic habitat, facultative bacteria (FB) and methane producing archaea (MPA) can co-exist with the other strains for carbon degradation. Considering only the two sequential reactions with SRB (sulfate reduction) and SOB (sulfide oxidation) yields the so-called SR-SO process [15]. Under micro-aerobic conditions (DO<0.5 mg/L), these two steps can be achieved in a single reactor [13], which can be described as the SR-SO process and the O2OH -step.…”

Section: Introductionmentioning

confidence: 99%

“…Although simultaneous biological C-N-S removal has been widely studied [14,15], few efforts have been devoted to modeling the integrated process, especially the synergistic and competitive relationships among microorganisms [48,51,[53][54]. The Activated Sludge Models Nos.…”

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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“…O efeito do sódio na estrutura do grânulo foi determinante na inibição da metanogênese observada. LETTINGA, 1988;LENS et al, 1998;GREBEN;MAREE;MNQANQENI, 2000;DAMIANOVIC & FORESTI, 2009;COSTABILE et al, 2011) O efeito do sódio sobre a digestão anaeróbia tem sido extensivamente estudado (FEIJOO et al, 1995;GUERRERO et al, 1997;VALLERO et al, 2003), no entanto os resultados disponíveis na literatura sobre as concentrações inibitórias do íon Na + são escassos. Esses autores admitem que o limite máximo de sódio em reatores anaeróbios ainda não está bem definido e depende de fatores tais como: adaptação da biomassa e efeitos como antagonismo/sinergismo, causados pela presença de outros cátions.…”

Section: Introductionunclassified

Influência da razão DQO/[SO 4 2- ] e da concentração de Na + na remoção de matéria orgânica e sulfato em reator UASB

Callado

Damianovic

Foresti

2016

Eng. Sanit. Ambient.

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Biotechnological Treatment of Sulfate-Rich Wastewaters

Cited by 490 publications

References 0 publications

Performance and granulation in an upflow anaerobic sludge blanket (UASB) reactor treating saline sulfate wastewater

Performance and granulation in an upflow anaerobic sludge blanket (UASB) reactor treating saline sulfate wastewater

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

Influência da razão DQO/[SO 4 2- ] e da concentração de Na + na remoção de matéria orgânica e sulfato em reator UASB

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