Solid wastes in brewing process: A review

For the municipal solid waste (MSW) to be used in a proper way, it is necessary to implement clean technologies capable of thermal treatment of MSW and RDF in order to produce heat and electricity while meeting current ecological requirements. Nowadays, a number of technologies for MSW/RDF thermal treating are being used worldwide. Among them, the most proven technologies, applicable for industrial introduction, have been considered while analyzing their advantages/ disadvantages accounting for local conditions of Ukraine.

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New Systems for the Digestion of Solid Wastes

Water Science & Technology ◽

10.2166/wst.1992.0164 ◽

1992 ◽

Vol 25 (7) ◽

pp. 319-326 ◽

Cited By ~ 3

Author(s):

A. Wellinger ◽

U. Baserga ◽

K. Egger

Keyword(s):

Dry Matter ◽

Gas Production ◽

Matter Content ◽

Solid Wastes ◽

Dry Matter Content ◽

Feeding System ◽

Shear Forces ◽

Tank Reactor ◽

Strong Shear ◽

First Results

Two new systems for the digestion of solid wastes at thermophilic temperatures were developped and are currently being investigated at our research institute. The first system (ANCOM) was designed to process straw-rich cattle manure with a natural dry matter content of 18% to 22%. First results demonstrated a good specific gas production of 1.2 m3 biogas per m3 digester volume and day (54% methane) corresponding to a gas yield of 400 l per kg VS. A second digester system was developed to treat fruit, garden and vegetable (FGV-) waste. Because FGV-waste tends to float, a stirred tank reactor was designed in cooperation with an engineering firm. The reactor includes a distinguished new stirring system taking up strong shear forces and a hydraulic feeding system which guarantees that even during recirculation of the material, the hygenized digested substrate leaving the digester is not brought in contact with the fresh incoming material. First results measured at an HRT of 40 days demonstrated a specific gas production of 2.7 m3 per m3 fermenter and day.

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Conditioning of oily sludges with municipal solid wastes incinerator fly ash

Water Science & Technology ◽

10.2166/wst.1997.0318 ◽

1997 ◽

Vol 35 (8) ◽

pp. 231-238 ◽

Cited By ~ 7

Author(s):

Tay Joo Hwa ◽

S. Jeyaseelan

Keyword(s):

Heavy Metals ◽

Fly Ash ◽

Specific Resistance ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Solid Wastes ◽

Municipal Solid Wastes ◽

Capillary Suction ◽

Optimum Dosage

Conditioning of sludges improves dewatering characteristics and reduces the quantity of sludge to be handled. Anaerobic digested sludge collected from a sewage treatment plant contained 1.8% to 8% oil. The increase of specific resistance and capillary suction time (CST) with increasing oil content observed in these samples indicates the interference of oil in dewatering. It has been found that addition of municipal solid wastes incinerator fly ash decreases the specific resistances and capillary suction times of oily sludges rapidly up to 3% dosage. Beyond 3% fly ash, the decrease is less significant and the solids content in the sludge cake increases. This optimum dosage remains the same for sludges with varying oil contents from 1.8% to 12%. The total suspended solids of filtrate decreases with fly ash dosage but the toxic concentrations of heavy metals increases considerably. However at the optimum dosage of 3%, concentrations of heavy metals are within the limits for discharging into the sewers. The correlations of CST with the dewatering characteristics such as specific resistance, filter yield and corrected filter yield are established. These correlations can be used to obtain a quick prediction on dewaterability.

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Characterization of pellets made from rose oil processing solid wastes/coal powder/pine bark

Renewable Energy ◽

10.1016/j.renene.2019.10.070 ◽

2020 ◽

Vol 149 ◽

pp. 933-939 ◽

Cited By ~ 1

Author(s):

Orhan Alp Atay ◽

Kamil Ekinci

Keyword(s):

Solid Wastes ◽

Pine Bark ◽

Oil Processing ◽

Coal Powder ◽

Rose Oil

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From the leather industry to building sector: Exploration of potential applications of discarded solid wastes

Journal of Cleaner Production ◽

10.1016/j.jclepro.2021.125960 ◽

2021 ◽

Vol 291 ◽

pp. 125960

Author(s):

Marina Vidaurre-Arbizu ◽

Silvia Pérez-Bou ◽

Amaia Zuazua-Ros ◽

César Martín-Gómez

Keyword(s):

Solid Wastes ◽

Leather Industry ◽

Building Sector ◽

Potential Applications

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Utilization of inorganic solid wastes in cementitious materials – A systematic literature review

Construction and Building Materials ◽

10.1016/j.conbuildmat.2021.122833 ◽

2021 ◽

Vol 285 ◽

pp. 122833

Author(s):

Fábio Friol Guedes de Paiva ◽

Jacqueline Roberta Tamashiro ◽

Lucas Henrique Pereira Silva ◽

Angela Kinoshita

Keyword(s):

Literature Review ◽

Systematic Literature Review ◽

Cementitious Materials ◽

Solid Wastes

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Spent Brewer’s Yeast as a Source of Insoluble β-Glucans

International Journal of Molecular Sciences ◽

10.3390/ijms22020825 ◽

2021 ◽

Vol 22 (2) ◽

pp. 825

Author(s):

Ionut Avramia ◽

Sonia Amariei

Keyword(s):

Emulsion Stability ◽

Extraction Process ◽

Brewer’S Yeast ◽

Brewer's Yeast ◽

Brewing Process ◽

Food Applications ◽

Water Holding ◽

Potential Food ◽

Insight Into

In the brewing process, the consumption of resources and the amount of waste generated are high and due to a lot of organic compounds in waste-water, the capacity of natural regeneration of the environment is exceeded. Residual yeast, the second by-product of brewing is considered to have an important chemical composition. An approach with nutritional potential refers to the extraction of bioactive compounds from the yeast cell wall, such as β-glucans. Concerning the potential food applications with better textural characteristics, spent brewer’s yeast glucan has high emulsion stability and water-holding capacity fitting best as a fat replacer in different food matrices. Few studies demonstrate the importance and nutritional role of β-glucans from brewer’s yeast, and even less for spent brewer’s yeast, due to additional steps in the extraction process. This review focuses on describing the process of obtaining insoluble β-glucans (particulate) from spent brewer’s yeast and provides an insight into how a by-product from brewing can be converted to potential food applications.

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