Hydrodynamic cavitation of brewery spent grain diluted by wastewater

Montusiewicz, Agnieszka; Pasieczna-Patkowska, Sylwia; Lebiocka, Magdalena; Szaja, Aleksandra; Szymańska-Chargot, Monika

doi:10.1016/j.cej.2016.10.132

Cited by 56 publications

(26 citation statements)

References 76 publications

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“…Thus, in present case, inlet pressure of 5 bars exists for both plate configurations and degradation of CPF. Similar observations of optimum inlet pressure are seen in treatment of brewery spent wastewater [31]; degradation of organic wastewater [32]; decolorization of azo dyes [33].…”

Section: Inlet Pressure Effect On Degradation Of Chlorpyrifos and Codsupporting

confidence: 67%

Comparing geometric parameters of a hydrodynamic cavitation process treating pesticide effluent

Randhavane

2018

Environmental Engineering Research

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Paper focuses on comparison between two different orifice plate configurations (plate number 1 and plate number 2) used as cavitating device in the hydrodynamic cavitation reactor for improving pollutant removal efficiencies. Effect of four different parameters such as hydraulic characteristics (in terms of range of flow rates, orifice velocities, cavitation number at different inlet pressures); cavitation number (in range of 5.76-0.35 for plate number 1 and 1.20-0.35 for plate number 2); inlet pressure (2-8 bars) and reaction time (0 to 60 min) in terms of chemical oxygen demand (COD) removal and chlorpyrifos degradation has been studied and compared. Optimum inlet pressure of 5 bars exists for degradation of pollutants for both the plates. It is found that geometry of orifice plate plays important role in removal efficiencies of pollutant. Results obtained confirmed that orifice plate 1 with configuration of 1.5 mm 17 holes; cavitational number of 1.54 performed better with around 60% COD and 98% chlorpyrifos removal as compared to orifice plate 2 having configuration of 2 mm single hole; cavitational number of 0.53 with 40% COD and 96% chlorpyrifos in 2 h duration time.

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Section: Inlet Pressure Effect On Degradation Of Chlorpyrifos and Codsupporting

confidence: 67%

Comparing geometric parameters of a hydrodynamic cavitation process treating pesticide effluent

Randhavane

2018

Environmental Engineering Research

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“…Moreover, the pulverization of spent malts shown in Section 4.2, leading to the improvement of their biodegradability, as was recently proven (Montusiewicz et al, 2016), could lead to the respective energy recovery in the form of biogas, thereby adding to the overall energy efficiency of HC-assisted brewing.…”

Section: Energy Efficiencymentioning

confidence: 94%

Beer-brewing powered by controlled hydrodynamic cavitation: Theory and real-scale experiments

Albanese

Ciriminna

Meneguzzo

et al. 2017

Journal of Cleaner Production

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The basic beer-brewing industrial practices have barely changed over time. While well proven and stable, they have been refractory to substantial innovation. Technologies harnessing hydrodynamic cavitation have emerged since the 1990s' in different technical fields including the processing of liquid foods, bringing in advantages such as acceleration of extraction processes, disinfection and energy efficiency. Nevertheless, so far beer-brewing processes were not investigated. The impacts of controlled hydrodynamic cavitation, managed by means of a dedicated unit on a real microbrewery scale (230 L), on the beer-brewing processes is the subject of this paper. The physico-chemical features of the obtained products, analyzed by means of professional instruments, were compared with both literature data and data from the outcomes of a traditional equipment. Traditional processes such as dry milling of malts and wort boiling becoming entirely unnecessary, dramatic reduction of saccharification temperature, acceleration and increase of starch extraction efficiency, relevant energy saving, while retaining safety, reliability, scalability, virtually universal application to any brewing recipe, beer quality, were the most relevant experimental results. The impacts of these findings are potentially far reaching, beer being the worldwide most widely consumed alcoholic beverage, therefore highly relevant to health, environment, the economy and even to local identities.

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“…Ferraz et al [28] also monitored the changes in the biomass composition during the study of chromium (III) biosorption onto spent grains residues obtained from a Portuguese brewing industry. Further studies on the FTIR spectroscopy of BSG include that of Montusiewicz et al [29] Becidan et al [18], and Xi et al [30]. Other analyses include Raman spectroscopy and X-ray diffraction (XRD), which could be deployed to investigate the structure of carbon and deduce the degree of cellulose crystallinity respectively [31,32].…”

Section: Introductionmentioning

confidence: 99%

Thermo-kinetic, spectroscopic study of brewer’s spent grains and characterisation of their pyrolysis products

Balogun

Sotoudehniakarani

McDonald

2017

Journal of Analytical and Applied Pyrolysis

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A B S T R A C TBrewer's spent grains, major by-products of the beverage industries, were obtained from a Nigerian brewery and subjected to pyrolysis at 500°C. Analytical pyrolysis (Py-GC/MS) was conducted on the original BSG, extractivefree BSG and BSG CH 2 Cl 2 extract. There was a marked difference in the concentration of levoglucosan between the extractive-free BSG (40.5%) and the original BSG (11.5%). The Py-GC/MS detected significant amount of palmitic and oleic acids in the three samples. Prior to pyrolysis, the extractives content were isolated through methanolysis, transesterified and subjected to GC/MS analysis. The analysis revealed the presence of linoleic, oleic and palmitic acids in an appreciable quantity. The BSG and its biochar were also characterised according to Fourier transform infrared and Raman spectroscopic, and thermogravimetric analyses alongside some conventional physico-chemical analysis. The total crystallinity and condensation indices were evaluated from specific FTIR spectra peaks so as to monitor structural transformations in the bio-char. Kinetic data were deduced from TGA measurements and it was apparent that thermal decomposition of BSG is better modelled as a multi-step reaction mechanism. The nitrogen content of the bio-char was relatively high making it a suitable feedstock for the production of in situ nitrogenised activated bio-carbon. There was a significant variation between the structural configuration of the original BSG and the bio-char as revealed by the change in the value of the condensation index as well as the cellulose crystallinity content. It may thus be concluded that the BSG biomass would be a viable feedstock for thermal decomposition and other valorisation processes.

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Hydrodynamic cavitation of brewery spent grain diluted by wastewater

Cited by 56 publications

References 76 publications

Comparing geometric parameters of a hydrodynamic cavitation process treating pesticide effluent

Comparing geometric parameters of a hydrodynamic cavitation process treating pesticide effluent

Beer-brewing powered by controlled hydrodynamic cavitation: Theory and real-scale experiments

Thermo-kinetic, spectroscopic study of brewer’s spent grains and characterisation of their pyrolysis products

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