A tanks-in-series bioreactor to simulate macromolecule-laden wastewater pretreatment under sewer conditions by Aspergillus niger

Coulibaly, Lacina; Naveau, Henry; Agathos, Spiros N.

doi:10.1016/s0043-1354(02)00117-3

Cited by 19 publications

(23 citation statements)

References 26 publications

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“…Filtration of mixed liquor was done on Whatman No. 4 filter paper, followed by oven drying at 105°C (Coulibaly et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

“…Prior to use in the reactor system, A. niger was precultured in the medium described by Garcia et al (1997). Preculture of spores and fungal biomass recovery were carried out as described previously (Coulibaly et al, 2002). Three fungal dry biomass weights (0.06, 1.15 and 1.8 g) were used to inoculate reactor R 1 .…”

Section: Microorganisms and Culture Conditionsmentioning

confidence: 99%

“…The sewer simulating-system was the reactor system previously described by Coulibaly et al (2002). Briefly, it is composed of a set of five stirred tanks in series.…”

Section: Reactor Systemmentioning

confidence: 99%

“…The reactor system was operated at an overall hydraulic residence time (HRT) of 14 h, which is found in long sewer lines (Özer and Kasirga, 1995). The reactor system was inoculated and sampled in the same way as that described in our previous research (Coulibaly et al, 2002). Briefly, each subreactor (R 1 to R 5 ) was filled with 500 ml of synthetic wastewater, giving a total volume of 2500 ml for the reactor system.…”

Section: Reactor Systemmentioning

confidence: 99%

“…Whereas macromolecular substrate degradation in biological wastewater treatment processes is well documented (Maxham and Maier, 1978;Confer and Logan, 1991;Haldane and Logan, 1994;Confer and Longan, 1997a and b;Ubukata, 1997;Goel et al, 1997Goel et al, , 1998, information on the degradation of these molecules under sewer conditions is scarce (Coulibaly et al, 2002;. Optimising macromolecular substrate hydrolysis in a sewer network could lead to production of assimilable molecules.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Aspergillus niger inoculum concentration upon the kinetics of starchy wastewater pretreatment in a tanks-in-series bioreactor under transitory conditions

Coulibaly

Agathos

2007

Braz. J. Chem. Eng.

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-This paper discusses the effects of three Aspergillus niger inoculum concentrations (0.12, 2.3 and 3.6 g/l) upon the kinetics of starch pretreatment under aerobic and transitory conditions using a tanks-in-series reactor. A synthetic wastewater containing starch as model polysaccharide was fed into the reactor system to study this polymer transformation by Aspergillus niger. Starch and metabolites (oligosaccharides with a molecular weight lower than 1 kDa) in the individual reactors were quantified respectively by the starch iodine complex (SIC) and anthrone methods. Enzyme activities were characterised with API ZYM kits. Starch degradation and metabolite accumulation were both influenced by both fungal inoculum and reactor HRT. Starch degradation improved from 34 to 99% with a parallel in increase inoculum concentration from 0.12 to 3.6 g/l. An overall of 400 mg/l of metabolites accumulated in the reactor system. A. niger secreted both extracellular and cell-wall-bound enzymes among which amylases.

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“…Filtration of mixed liquor was done on Whatman No. 4 filter paper, followed by oven drying at 105°C (Coulibaly et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

Section: Microorganisms and Culture Conditionsmentioning

confidence: 99%

“…The sewer simulating-system was the reactor system previously described by Coulibaly et al (2002). Briefly, it is composed of a set of five stirred tanks in series.…”

Section: Reactor Systemmentioning

confidence: 99%

Section: Reactor Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Aspergillus niger inoculum concentration upon the kinetics of starchy wastewater pretreatment in a tanks-in-series bioreactor under transitory conditions

Coulibaly

Agathos

2007

Braz. J. Chem. Eng.

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Aspergillus niger upregulated glycerolipid metabolism and ethanol utilization pathway under ethanol stress

et al. 2019

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Organic solvent-tolerant microbes play key roles in many industrial bioprocesses, such as biofuel production, biocatalysis, and bioremediation (Nicolaou, Gaida, & Papoutsakis, 2010). To obtain strains with tolerance to these solvents, an approach involves genetically engineering selected strains based on the knowledge of organic solvent-induced stresses and responses (Taylor, Tuffin, Burton, Eley,

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Production of bio‐fertilizer by biotransformation of poultry waste enriched with molasses and algae

Ozi

Boutaleb

Hadidi

et al. 2022

Environmental Quality Mgmt

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This research work consists on valorizing poultry waste by biotransformation into biofertilizers, associating this agro‐industrial waste with algae (abundant natural resources) and molasses (a by‐product of the sugar refining industry) ensuring a good contribution of nutritional chemical elements and obtaining a balanced formulation. A total of seven different formulations of the above three components, were examined in a simplex centroid design. A fungal inoculum of Aspergillus niger was used as a fermentation agent for better quality of biotransformation. The monitoring of this biotransformation is ensured during 15 days by following the evolution of physicochemical and microbiological parameters and, to understand the bioconversion of the simple compounds of the biofertilizer mixture such as short aliphatic chains, sugar, and amino acids into soluble mineral compounds, a Fourier transform infrared spectroscopy (FTIR) analysis was carried out before and after biotransformation. Finally, germination and fertilization tests were performed to evaluate the efficiency of the final product on a barley crop. The overall results of the present study showed that the mixture which contained 68.75% poultry waste, 12.5% molasses, and 18.75% algae presented the better microbiological and chemical safety criteria required for a good biofertilizer according to NF U44‐551 standard.

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A tanks-in-series bioreactor to simulate macromolecule-laden wastewater pretreatment under sewer conditions by Aspergillus niger

Cited by 19 publications

References 26 publications

Effects of Aspergillus niger inoculum concentration upon the kinetics of starchy wastewater pretreatment in a tanks-in-series bioreactor under transitory conditions

Effects of Aspergillus niger inoculum concentration upon the kinetics of starchy wastewater pretreatment in a tanks-in-series bioreactor under transitory conditions

Aspergillus niger upregulated glycerolipid metabolism and ethanol utilization pathway under ethanol stress

Production of bio‐fertilizer by biotransformation of poultry waste enriched with molasses and algae

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