The use of oak chips and coconut fiber as biofilter media to remove vocs in rendering process.

Tymczyna, L.; Chmielowiec-Korzeniowska, Anna; Paluszak, Zbigniew; Dobrowolska, Magadalena; Banach, Marcin; Pulit, Jolanta

doi:10.18388/abp.2013_2052

Cited by 2 publications

(3 citation statements)

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“…Rendering plants are built to treat dead livestock and poultry, and mainly produce grease and bone meal under high temperature ranging from 115 to 145°C for 40-90 min (Bhatti et al, 2014;Meeker, 2021). Volatile organic compounds (VOCs) contained in the waste gases emitted from the rendering plants are very much complex, including organic acids, alcohols, aldehydes, amines, aliphatic hydrocarbons and aromatic hydrocarbons (Shareefdeen et al, 2005, Tymczyna et al, 2013Bhatti et al, 2014;NRA, 2016;Guerra et al, 2017). At present, the rendering plants in Taiwan commonly use the batch feeding system to process the animal carcasses, resulting in unstable concentrations of VOCs in the exhaust gas are unstable, and the freshness of carcasses will also affect the VOC treatment efficiencies of the air pollution control devices (APCDs).…”

Section: Introductionmentioning

confidence: 99%

“…Rendering plants usually adopted bio-filters (Shareefdeen et al, 2003(Shareefdeen et al, , 2005Tymczyna et al, 2013) and wet scrubbers (Kastner and Das, 2002) for the abatement of VOCs. However, according to the earlier experiments in the field, bio-filters and wet scrubbers are suitable to treat the large flow rates of exhausted gas from rendering plants.…”

Section: Introductionmentioning

confidence: 99%

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VOC Emissions from a Rendering Plant and Evaluation for Removal of Pentanal by Oxidization Using Hydrogen Peroxide

Cheng

Lin²,

Yuan³

et al. 2023

Aerosol Air Qual. Res.

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Rendering plants treat dead livestock and produce grease and bone meal. In a rendering plant, the cooking and drying processes are the main sources of odor emissions. Non-fresh dead livestock reduce the performance of odor control devices, and in Taiwan, the treatment facilities in a rendering plant mostly are operated in a batch feeding, which causes volatile organic compound (VOC) emissions in the exhausted gas, that always caused complaints from the nearby neighborhood. This study used respectively ozone and hydrogen peroxide to evaluate the removal efficiencies of pentanal, hexanal and toluene those are common VOCs in the rendering exhaustion. Experimental results indicated that ozone could not effectively reduce aldehydes and toluene, and the residual ozone remaining in the exhaust gas is a secondary air pollutant and irritate the human respiratory tracts. Oppositely, hydrogen peroxide effectively removed pentanal as a feasible VOC treatment oxidant by adding into a contact reactor. When the pentanal exhaustion concentration from the rendering process was around 36.23 ppm in the flue with the flow rates from 100 to 250 Nm 3 min -1 , the reaction rate constant of pentanal for the first-order reaction by aqueous hydrogen peroxide of 1,000 mg L -1 was obtained as 0.536 1 s -1 , and then the pentanal reduced to 0.68 to 2 ppm. Based on the simulation using the Gaussian dispersion model, the concentration ranges of pentanal in the exhausted stream resulted in the pentanal emission rate lower than 0.01 g s -1 , which no longer causes surrounding residents' complaints.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

VOC Emissions from a Rendering Plant and Evaluation for Removal of Pentanal by Oxidization Using Hydrogen Peroxide

Cheng

Lin²,

Yuan³

et al. 2023

Aerosol Air Qual. Res.

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“…CS consist mainly cellulose, hemicellulose, lignin and moisture which are a potential source of Si-based refractory [3]. Coconut serves as a byeproduct for beverages, some medicine, cosmetics, natural fiber, fuel and also for much other commercialization [4][5][6][7][8]. Silicon carbide (SiC) is an essential ceramics material possessing a wide range of application.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Si-Based Refractory Compounds from Coconut Shell by Carbothermal Method

Adediran

Alaneme

Oladele

2019

JERA

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The synthesis of Si-based refractory compounds from coconut shells (CS) by carbothermal treatment was investigated. Coconut shells, an agro-waste was utilised in the processing of the Si-based refractory compounds in a single stage carbothermal processing route. The treatment scheduled was carried out in a conventional heat treatment furnace at a temperature window of (900-1900 °C) at 10 °C/min heating rate in a controlled atmosphere. X-ray Diffractometer (XRD) was used to analyzed and quantify the crystalline and amorphous phases in the reaction products. The results from Fourier transform infrared spectroscopy (FTIR) revealed that, the dominant functional groups present after the carbothermal treatment were mainly Si-O-Si and Si-C groups. Also, the XRD results showed that the polytypes are mainly of α-SiC type precipitating as hexagonal symmetry of 6H-SiC and 4H-SiC type. The silica polytypes amount to about 8-14 wt.% of the silica polytypes as observed for different processing temperatures adopted. However, the total yield of SiC-made up between 11 to 40 wt.% of the crystalline phases as identified by XRD from the process. It is evident that the adoption of this processing route is a viable option for the synthesis of coconut shells as potential reinforcement for composites design.

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The use of oak chips and coconut fiber as biofilter media to remove vocs in rendering process.

Cited by 2 publications

References 0 publications

VOC Emissions from a Rendering Plant and Evaluation for Removal of Pentanal by Oxidization Using Hydrogen Peroxide

VOC Emissions from a Rendering Plant and Evaluation for Removal of Pentanal by Oxidization Using Hydrogen Peroxide

Synthesis of Si-Based Refractory Compounds from Coconut Shell by Carbothermal Method

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