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Title: Recycling Slaughterhouse Waste into Fertilizer: How Do Pyrolysis Temperature and Biomass Additions Affect Phosphorus Availability and Chemistry?

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Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 1097-0010
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of the Science of Food and Agriculture; Journal Volume: 95; Journal Issue: 2
Country of Publication:
United States

Citation Formats

Zwetsloot, M, Lehmann, J, and Solomon, D. Recycling Slaughterhouse Waste into Fertilizer: How Do Pyrolysis Temperature and Biomass Additions Affect Phosphorus Availability and Chemistry?. United States: N. p., 2015. Web. doi:10.1002/jsfa.6716.
Zwetsloot, M, Lehmann, J, & Solomon, D. Recycling Slaughterhouse Waste into Fertilizer: How Do Pyrolysis Temperature and Biomass Additions Affect Phosphorus Availability and Chemistry?. United States. doi:10.1002/jsfa.6716.
Zwetsloot, M, Lehmann, J, and Solomon, D. 2015. "Recycling Slaughterhouse Waste into Fertilizer: How Do Pyrolysis Temperature and Biomass Additions Affect Phosphorus Availability and Chemistry?". United States. doi:10.1002/jsfa.6716.
title = {Recycling Slaughterhouse Waste into Fertilizer: How Do Pyrolysis Temperature and Biomass Additions Affect Phosphorus Availability and Chemistry?},
author = {Zwetsloot, M and Lehmann, J and Solomon, D},
abstractNote = {},
doi = {10.1002/jsfa.6716},
journal = {Journal of the Science of Food and Agriculture},
number = 2,
volume = 95,
place = {United States},
year = 2015,
month = 1
  • A system to turn a potentially harmful stream of solid waste into a set of substreams with either commercial value or highly concentrated residual streams is presented. The waste which is considered is metal impregnated (in particular Chromated Copper Arsenate (CCA) treated) wood waste and timber, such as telephone poles, railway sleepers, timber from landscape and cooling towers, wooden silos, hpo-poles, cable drums and wooden playground equipment. These waste streams sum up to several 100,000 tons of material per year currently to be dumped in every major country of the european Community (EC). Technologies need to be developed to reducemore » this CCA treated wood waste, such that all of the metals are contained in a marketable product stream, and the pyrolysis gases and/or pyrolysis liquid are used to their maximum potential with respect to energy recuperation. Pyrolyzing the CCA treated wood waste may be a good solution to the growing disposal problem since low temperatures and no oxidizing agents are used, which result in lower loss of metals compared to combustion. An experimental labscale pyrolysis system has been developed to study the influence of the pyrolysis temperature and the duration of the pyrolysis process on the release of metals and the mass reduction. The macrodistribution and microdistribution of the metals in the solid pyrolysis residue is studied using Inductively coupled Plasma mass Spectrometry (ICP-MS) and Scanning Electron Microscopy coupled with Energy Dispersive X-ray Analysis (SEM-EDXA). Furthermore, a complete mass balance is calculated over the pyrolysis system. Based on these results a semi-industrial pyrolysis system has been developed consisting of three stages: grinding, packed bed pyrolysis and metal separation. Special types of equipment have been developed to carry out the three stages. A new grinding system has been developed, based on a crushing mechanism rather than a cutting mechanism.« less
  • Highlights: • Co-digestion process finalized to bio-H{sub 2} production was tested in batch tests. • Slaughterhouse waste (SHW) and food waste (FW) were co-digested in different proportions. • The presence of SHW affected the H{sub 2} production from FW. • When SHW ranging between 50% and 70% the H{sub 2} production is improved. • SHW percentages above 70%, led to a depletion in H{sub 2} production. - Abstract: The aim of this study was to evaluate the influence of slaughterhouse waste (SHW; essentially the skin, fats, and meat waste of pork, poultry, and beef) in a fermentative co-digestion process formore » H{sub 2} production from pre-selected organic waste taken from a refectory (food waste [FW]). Batch tests under mesophilic conditions were conducted in stirred reactors filled with different proportions of FW and SHW. The addition of 60% and 70% SHW to a mixture of SHW and FW improved H{sub 2} production compared to that in FW only, reaching H{sub 2}-production yields of 145 and 109 ml gVS{sub 0}{sup -1}, respectively, which are 1.5–2 times higher than that obtained with FW alone. Although the SHW ensured a more stable fermentative process due to its high buffering capacity, a depletion of H{sub 2} production occurred when SHW fraction was higher than 70%. Above this percentage, the formation of foam and aggregated material created non-homogenous conditions of digestion. Additionally, the increasing amount of SHW in the reactors may lead to an accumulation of long chain fatty acids (LCFAs), which are potentially toxic for anaerobic microorganisms and may inhibit the normal evolution of the fermentative process.« less
  • Highlights: • Thermal and catalytic pyrolysis is a powerful method for recycling of WEEEs. • Liquid products obtained from the pyrolysis of PC or HIPS found in waste CDs are very different. • Mainly phenols are obtained from pyrolysis PC based wastes while aromatics from HIPS. • Use of MgO catalyst increases the amount of phenols from CD recycling compared to ZSM-5. • Use of MgO or ZSM-5 catalysts reduces the amount of styrene recovered from HIPS. - Abstract: Pyrolysis appears to be a promising recycling process since it could convert the disposed polymers to hydrocarbon based fuels or variousmore » useful chemicals. In the current study, two model polymers found in WEEEs, namely polycarbonate (PC) and high impact polystyrene (HIPS) and their counterparts found in waste commercial Compact Discs (CDs) were pyrolysed in a bench scale reactor. Both, thermal pyrolysis and pyrolysis in the presence of two catalytic materials (basic MgO and acidic ZSM-5 zeolite) was performed for all four types of polymers. Results have shown significant recovery of the monomers and valuable chemicals (phenols in the case of PC and aromatic hydrocarbons in the case of HIPS), while catalysts seem to decrease the selectivity towards the monomers and enhance the selectivity towards other desirable compounds.« less
  • The Mitscherlich-Bray relationship was applied to soil test-extractable P and K in coal waste, and yield of tall fescue (Festuca arundinacea Schreb.) grown in the waste at pH 6.5. The typical exponential function between yield and extractable P obtained with soil-grown plants was not exhibited by the waste-grown plants for dilute acid or acid ammonium fluoride extractants, partly because values >15 mg/kg extractable P in the waste could not be obtained despite heavy P fertilization. Correlation coefficients (r/sup 2/) for extractable P in the growth media vs. P concentrations in shoots were 0.45 for the waste, and 0.81 for Elliottmore » silt loam. Results with extractable K and yield on the waste were inconclusive, due to the confounding effect of an apparent Ca interference with K uptake. It is concluded that results of ''soil testing'' for P and K in coal waste should be interpreted with caution; in some cases, the tests may be inappropriate as indices of available forms of these elements in the waste.« less