Recovery and utilization of effluents from meat processing industries

Rahman, Ubaid ur; Sahar, Amna; Khan, Muhammad Azam

doi:10.1016/j.foodres.2014.09.026

Cited by 51 publications

(43 citation statements)

References 50 publications

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“…Odpady z przemysłu spożywczego zawierają głównie zanieczyszczenia organiczne. Usuwanie i utylizacja tego typu produktów jest skomplikowana ze względu na niestabilność biologiczną, wysoką zawartość wody, słabą stabilność oksydacyjną i zagrożenia sanitarne [6]. Odpady z przemysłu mięsnego mogą być poddawane recyklingowi i przekształcane w produkty o wysokiej wartości biologicznej.…”

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Characteristics of Wastewater from Animal Rendering Plant

Rodziewicz

Mielcarek

Bryszewski

et al. 2017

Eng. Prot. Environ.

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In this study, wastewater originating from a post-slaughter waste management plant, the main activity of which is the recovery of other than hazardous wastes of animal origin and wastes from the agri-food processing, were analyzed. The main substrates processed in the installation include post-slaughter wastes and wastes from the agri-food processing, like e.g.: waste animal tissue, raw materials and products unsuitable for consumption and processing originating from the food, dairy, bakery and confectionery industries, sludge from the onsite wastewater treatment plant, unusable dietary fats, cooking oils and fats, and biodegradable kitchen waste. The above-mentioned wastes are recovered and processed into meat-bone meal, blood meal, feather meal as well as technical fat. The wastewater was characterized by a high concentration of organic matter (COD from 20 345 to 66 260 mg O2/dm 3 ), total suspended solids (from 1068 to 4336 mg/dm 3 ), and fats (from 1186 to 2244 mg/dm 3 ). Phosphorus concentration in raw wastewater ranged from 75 to 230 mg P/dm 3 , that of total nitrogen from 496 to 910 mg N/dm 3 , and that of ammonia nitrogen from 450 to 846 mg N/dm 3 . The process line of the onsite wastewater treatment plant included: rotary screen, floatation--flocculation station (agents and procedures aiding the process: PIX coagulant, pH adjustment with soda lye, polyelectrolyte), aerobic bioreactor, and ultrafiltration station. The excess sludge from the bioreactor is dewatered on a filtration press and collected by an external company as a waste product. Removal effectiveness reached 99.7% for organic matter, 98.5% for total phosphorus, 95.2% for total nitrogen, 98.5% for ammonia nitrogen, and 98.9% for suspended solids. The total effectiveness of the first two stages of the treatment process (screening on rotary screens and wastewater treatment via floatation and flocculation) exceeded 50% in the case of most of the contaminants (except for total nitrogen with effectiveness accounting for 46%). The highest total effectiveness of the first two stages of the treatment process, reaching over 90%, was noted in the case of fats. Concentrations of contaminants in the treated wastewater did not exceed the permissible values, stipulated in the integrated permit.Keywords: slaughterhouse waste, rendering plant, wastewater quality, wastewater treatment WprowadzenieSektor mięsny wytwarza duże ilości ścieków w związku z ubojem zwierząt i czyszczeniem obiektów rzeźni i przetwórstwa mięsnego. Przemysł mięsny wykorzystuje 24% wody zużywanej przez przemysł spożywczy i aż do 29% wody

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Characteristics of Wastewater from Animal Rendering Plant

Rodziewicz

Mielcarek

Bryszewski

et al. 2017

Eng. Prot. Environ.

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“…The usage of abattoir wastes as secondary fuel through thermal recycling in power plants has been reported to be achievable [73]. In spite of this, cattle manure, poultry litter and pig waste are also important for biogas and electric power production [74] while solid waste generated from abattoirs and meat processing is used as fuel in the cyclonic combustor [75].…”

Section: Biogas Industrymentioning

confidence: 99%

“…After the removal of hides and skin from slaughtered animal in the abattoir, it is necessary to cure the skin to prevent microbial and enzymatic decomposition [74]. The by-product such as hide and skin provides raw materials for industrial processing and export in many countries around the world.…”

Section: Cosmetic and Fabric Industrymentioning

confidence: 99%

The Potential of Animal By-Products in Food Systems: Production, Prospects and Challenges

et al. 2017

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Abstract:The consumption of animal by-products has continued to witness tremendous growth over the last decade. This is due to its potential to combat protein malnutrition and food insecurity in many countries. Shortly after slaughter, animal by-products are separated into edible or inedible parts. The edible part accounts for 55% of the production while the remaining part is regarded as inedible by-products (IEBPs). These IEBPs can be re-processed into sustainable products for agricultural and industrial uses. The efficient utilization of animal by-products can alleviate the prevailing cost and scarcity of feed materials, which have high competition between animals and humans. This will also aid in reducing environmental pollution in the society. In this regard, proper utilization of animal by-products such as rumen digesta can result in cheaper feed, reduction in competition and lower cost of production. Over the years, the utilization of animal by-products such as rumen digesta as feed in livestock feed has been successfully carried out without any adverse effect on the animals. However, there are emerging gaps that need to be further addressed regarding the food security and sustainability of the products. Therefore, the objective of this review highlights the efficacy and effectiveness of using animal by-products as alternative sources of feed ingredients, and the constraints associated with their production to boost livestock performance in the industry at large.

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“…The material of the computational domain was reacting mixture of all chemical compounds involved in reactions described in (2)(3)(4)(5)(6)(7)(8)(9), and inert gas -nitrogen Heat transfer has been described with convection mechanisms. On this early stage of modeling, radiation model and heat transfer through the external walls was not included.…”

Section: Fig 8 Computational Domainmentioning

confidence: 99%

“…They are used in the production of fertilizers, animal feed and the pharmacological and cosmetic industry [3]. However, some components of wastes cannot be processed in any ways, so they have to be utilized [4].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical studies of rotating drum grate furnace

et al. 2017

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Abstract. Waste material from the meat industry can be taken into account as a biofuel. Studies confirm, that calorific value is higher and ash content is lower comparing to some conventional fuels. EU directives regulate details of thermal disposal of the waste material from the meat industry -especially in range of the process temperature and time of the particle presence in area of the combustion zone. The paper describes design of the rotating drum grate stove, dedicated to thermal disposal of the meat wastes as well as solid biomass (pellet, small bricket, wood chips) combustion. Device has been developed in frames of cooperation between AGH University of Science and Technology (Krakow, Poland) and producer focused on technologies of energy utilization of biomass in distributed generation. Results of measurements of selected operational parameters performed during startup of the furnace have been presented and discussed. Furthermore, numerical model of the combustion process has been developed to complement experimental results in range of the temperature and oxygen distribution in the area of the combustion chamber. ANSYS CFX solver has been applied to perform simulations including rotational domain related with specifics of operation of the device. Results of numerical modelling and experimental studies have been summarized and compared.

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Recovery and utilization of effluents from meat processing industries

Cited by 51 publications

References 50 publications

Characteristics of Wastewater from Animal Rendering Plant

Characteristics of Wastewater from Animal Rendering Plant

The Potential of Animal By-Products in Food Systems: Production, Prospects and Challenges

Experimental and numerical studies of rotating drum grate furnace

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