Simultaneous dark fermentative hydrogen and ethanol production from waste bread in a mixed packed tank reactor

Han, Wei; Hu, Yunyi; Li, Shiyi; Huang, Jingang; Nie, Qiulin; Zhao, Hongting; Tang, Junhong

doi:10.1016/j.jclepro.2016.09.143

Cited by 69 publications

(14 citation statements)

References 12 publications

(16 reference statements)

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“…The FCE include equipment purchase cost, process piping, equipment installation, electrical systems, instrumentation and controls, yard improvements, buildings, and construction as well as the working capital cost (WCC) which might represent 6.5% of FCE as suggested by Han et al [52]. Therefore, the FCE for design a treatment plant with 1000 m 3 /day of capacity reach to USD 950,000.00.…”

Section: Resultsmentioning

confidence: 99%

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Inactivating pathogenic bacteria in greywater by biosynthesized Cu/Zn nanoparticles from secondary metabolite of Aspergillus iizukae; optimization, mechanism and techno economic analysis

et al. 2019

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The inactivation of antibiotic resistant Escherichia coli (Gram negative) and Staphylococcus aureus (Gram positive) seeded in greywater by bimetallic bio-nanoparticles was optimized by using response surface methodology (RSM). The bimetallic nanoparticles (Cu/Zn NPs) were synthesized in secondary metabolite of a novel fungal strain identified as Aspergillus iizukae EAN605 grown in pumpkin medium. Cu/Zn NPs were very effective for inhibiting growth of E. coli and S. aureus. The maximum inactivation was optimized with 0.028 mg mL-1 of Cu/Zn NPs, at pH 6 and after 60 min, at which the reduction of E. coli and S. aureus was 5.6 vs. 5.3 and 5.2 vs. 5.4 log reduction for actual and predicted values, respectively. The inactivation mechanism was described based on the analysis of untreated and treated bacterial cells by Field emission scanning electron microscopy (FESEM), Energy Dispersive X-Ray Spectroscopy (EDS), Atomic Force Microscopy (AFM) revealed a damage in the cell wall structure due to the effect of Cu/Zn NPs. Moreover, the Raman Spectroscopy showed that the Cu/Zn NPs led to degradation of carbohydrates and amino structures on the bacteria cell wall. The Fourier transform infrared spectroscopy (FTIR) analysis confirmed that the destruction take place in the C-C bond of the functional groups available in the bacterial cell wall. The techno economic analysis revealed that the biosynthesis Cu/Zn NPs is economically feasible. These findings demonstrated that Cu/Zn NPs can effectively inhibit pathogenic bacteria in the greywater.

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Section: Resultsmentioning

confidence: 99%

“…Therefore, the FCE for design a treatment plant with 1000 m 3 /day of capacity reach to USD 950,000.00. (Table 3) The additional costs for the treatment process might reach 50% of the equipment cost which was equivalent to USD 475,000.00 [52]. The TCI of the plant could reach to USD 1,425,000.00.…”

Section: Resultsmentioning

confidence: 99%

Inactivating pathogenic bacteria in greywater by biosynthesized Cu/Zn nanoparticles from secondary metabolite of Aspergillus iizukae; optimization, mechanism and techno economic analysis

et al. 2019

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“…e method mentioned by Han et al [10] was used to quantify protease activity with modification. Exactly, the reaction mixture containing 0.3 mL of 20% (w/v) azocasein (Sigma), 0.1 mL of enzyme preparation, and 0.2 mL of citrate buffer at pH 5.2 was incubated for 4 h at 45°C.…”

Section: Protease Assaymentioning

confidence: 99%

“…BW is a good fermentation feedstock also since it is available year round and its availability is not associated with the harvest season [9]. It is used for its high yielding bioenergy substrates mainly for ethanol and biohydrogen production [10]. e work of Pleissner et al [11] suggested hydrolysed BW for bioplastic production by Halomonas boliviensis.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Protease and Amylase Production by Rhizopus oryzae Cultivated on Bread Waste Using Solid-State Fermentation

Benabda

M’hir

Kasmi

et al. 2019

Journal of Chemistry

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This research was carried for the coproduction of two industrial enzymes: α-amylase and protease via SSF by Rhizopus oryzae on humidified bread waste. Fermentation time, inoculum size, initial moisture content, salt solutions, and the thickness of the substrate were investigated one by one. Fungus culture was carried out in sterile aluminum trays, and pH was adjusted to 5.5. The main results showed that the highest levels of enzyme production were obtained at 120 h, 65% relative humidity, height media of 1 cm, 105 spore/g, and M-9 solution (g/L): NaH2PO4, 12.8; KH2PO4, 3; NaCl, 0.5; NH4Cl, 1; MgSO4 7H2O, 0.5; CaCl2 2H2O, 0.01. α-Amylase (100 U/g) and protease (2400 U/g) produced by SSF from Rhizopus oryzae (CH4) on BW as substrate are of great interest in industries and could be valorized as enhancers of the bread making process.

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“…The specific cost of these products

(kg/U.S.D) is the deliberated, which is dependent on the utility cost

, annual costs of capital

, raw material cost

, extra cost

, and the annual PhACs production, as presented by [ 36 ] (Equation (6)).

…”

Section: Resultsmentioning

confidence: 99%

Enhanced Pharmaceutically Active Compounds Productivity from Streptomyces SUK 25: Optimization, Characterization, Mechanism and Techno-Economic Analysis

et al. 2021

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The present research aimed to enhance the pharmaceutically active compounds’ (PhACs’) productivity from Streptomyces SUK 25 in submerged fermentation using response surface methodology (RSM) as a tool for optimization. Besides, the characteristics and mechanism of PhACs against methicillin-resistant Staphylococcus aureus were determined. Further, the techno-economic analysis of PhACs production was estimated. The independent factors include the following: incubation time, pH, temperature, shaker rotation speed, the concentration of glucose, mannitol, and asparagine, although the responses were the dry weight of crude extracts, minimum inhibitory concentration, and inhibition zone and were determined by RSM. The PhACs were characterized using GC-MS and FTIR, while the mechanism of action was determined using gene ontology extracted from DNA microarray data. The results revealed that the best operating parameters for the dry mass crude extracts production were 8.20 mg/L, the minimum inhibitory concentrations (MIC) value was 8.00 µg/mL, and an inhibition zone of 17.60 mm was determined after 12 days, pH 7, temperature 28 °C, shaker rotation speed 120 rpm, 1 g glucose /L, 3 g mannitol/L, and 0.5 g asparagine/L with R2 coefficient value of 0.70. The GC-MS and FTIR spectra confirmed the presence of 21 PhACs, and several functional groups were detected. The gene ontology revealed that 485 genes were upregulated and nine genes were downregulated. The specific and annual operation cost of the production of PhACs was U.S. Dollar (U.S.D) 48.61 per 100 mg compared to U.S.D 164.3/100 mg of the market price, indicating that it is economically cheaper than that at the market price.

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Simultaneous dark fermentative hydrogen and ethanol production from waste bread in a mixed packed tank reactor

Cited by 69 publications

References 12 publications

Inactivating pathogenic bacteria in greywater by biosynthesized Cu/Zn nanoparticles from secondary metabolite of Aspergillus iizukae; optimization, mechanism and techno economic analysis

Inactivating pathogenic bacteria in greywater by biosynthesized Cu/Zn nanoparticles from secondary metabolite of Aspergillus iizukae; optimization, mechanism and techno economic analysis

Optimization of Protease and Amylase Production by Rhizopus oryzae Cultivated on Bread Waste Using Solid-State Fermentation

Enhanced Pharmaceutically Active Compounds Productivity from Streptomyces SUK 25: Optimization, Characterization, Mechanism and Techno-Economic Analysis

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