Pyrolysis and gasification of food waste: Syngas characteristics and char gasification kinetics

Ahmed, Islam; Gupta, Ashwani K.

doi:10.1016/j.apenergy.2009.08.032

Cited by 226 publications

(80 citation statements)

References 15 publications

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“…However, they need specific conditions and many times produce more problems than solving them, such as odours [7,8]. Additionally, the microorganisms are quite sensitive and carbon content in feedstock cannot be fully utilized, since it is partially accumulated in microbes [9,10]. Thus, there is an immediate need to find novel effective ways to cope with waste that are produced in households.…”

Section: Introductionmentioning

confidence: 99%

“…Food samples used in pyrolysis reactors in literature are: cereals [19]; peanut crisps [19]; potato peels [20]; soybean protein [21]; peelings and chopping's of various raw vegetables and fruits [22]; mixture of rice, vegetable and meat/bones [16], or even dog food [9]. An important advantage of this work is the fact that discarded materials are not pre-treated in any special way and sample consist of real waste from kitchen in UK's household.…”

Section: Introductionmentioning

confidence: 99%

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Products’ composition of food waste low-temperature slow pyrolysis

et al. 2018

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Abstract. Food waste generation is one of the most crucial problems of our constantly developing world. There are several common methods of its treatment, however each one has its own advantages and disadvantages. Pyrolysis attracting attention in this field since a long time, because it allows to utilize this valuable resource with energy and material recovery. Moreover, the environmental impact of the process is relatively low. In this paper, products of low temperature household waste pyrolysis underwent a detailed chemical analysis. Liquid and solid residues was examined. Composition and concentration of particular compounds and elements indicates presence of long chain alkane, alkene and carboxylic acid molecules together with small amounts of aromatics within the bio-oil samples. The presence of heavy metals in residues was detected, too. Since the products are usually described as non-toxic, the idea of waste' lowtemperature thermal treating in household was analyzed. In general, examined residues from the process are safe for the environment, thus pyrolysis can be considered as a legitimate mechanism to treat kitchen waste combined with energy recovery for homes.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Products’ composition of food waste low-temperature slow pyrolysis

et al. 2018

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“…Although it has been proven to be a promising alternative to petroleum fuels, it also has a potencial for use in producing value-added chemicals. The possibility of using food wastes through thermal reduction methods is presented in the paper [6], the authors focused mainly on the process gas. Pyrolysis of food waste with respect to the production of bio-oil is the subject of the paper [7].…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis Processing of Waste Peanuts Crisps

Grycová¹,

Koutník²,

Pryszcz³

et al. 2015

GeoScience Engineering

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Wastes are the most frequent "by-product" of human society. The Czech Republic still has a considerable room for energy reduction and material intensiveness of production in connection with the application of scientific and technical expertise in the context of innovation cycles. Pyrolysis waste treatment is a promising alternative to the production of renewable hydrogen as a clean fuel. It can also reduce the environmental burden and the amount of waste in the environment at the same time.This paper presents the laboratory pyrolysis experiments of peanuts crisps waste to the final temperature of 800 °C. After the pyrolysis process of the selected waste a mass balance of the resulting products, off-line analysis of the pyrolysis gas and evaluation of solid residue in terms of adsorption properties and energy production and liquid products were carried out. The highest concentration of measured hydrogen (66 vol. %) was analysed during the 4 th gas sampling at the temperature varying from 750 to 800 °C.

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“…Li et al [14] showed that the greatest amount of energy was produced at 250 • C, although a change in carbon content was not significant through the characteristic food waste carbonization products using hydrothermal carbonization at 225 • C, 250 • C, and 275 • C. Parshetti [15] and Han et al [16] presented a possibility to treat contaminated water with carbonized food waste using the fact that char has an adsorption ability according to the carbonization temperature. Ahmed and Gupta [17] carried out the study regarding syngas, hydrogen gas, and energy recovery through food waste pyrolysis and gasification at the high temperature of 800~900 • C and Liu, Haili, et al [18] studied the effects of chloride salts contained in food waste on the production of bio-oil and gas through pyrolysis using microwave. Caton et al [19] focused on dehydration and combustion and discovered that commercial food waste showed high calorific value, indicating a higher possibility of being combustion fuel than a wood pellet.…”

Section: Introductionmentioning

confidence: 99%

Recycling Possibility of the Salty Food Waste by Pyrolysis and Water Scrubbing

Lee

Kim

et al. 2017

Energies

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Abstract:Salty food waste is difficult to manage with previous methods such as composting, anaerobic digestion, and incineration, due to the hindrance of salt and the additional burden to handle high concentrations of organic wastewater produced when raw materials are cleaned. This study presents a possibility of recycling food waste as fuel without the burden of treatment washing with water by pyrolyzing and scrubbing. For this purpose, salty food waste with 3% NaCl was made using 10 materials and pyrolysis was conducted at temperature range between 200-400 • C. The result was drawn from elementary analysis (EA), X-ray photoelectron spectroscopy (XPS) analysis, atomic absorption spectrophotometry (AAS) analysis, water quality analysis and calorific value analysis of char, washed char, and washing water. The result of the EA showed that NaCl in food waste could be volatilized at a low pyrolysis temperature of 200-300 • C and it could be concentrated and fixed in char at a high pyrolysis temperature of 300-400 • C. The XPS analysis result showed that NaCl existed in form of chloride. Through the Na content result of the AAS analysis, NaCl remaining in char after water scrubbing was determined to be less than 2%. As the pyrolysis temperature increased, the chemical oxygen demand (COD) value of scrubbing water decreased rapidly, but the total phosphorus and nitrogen contents decreased gradually. The cleaned pyrolysis char showed an increase of higher heating value (HHV) approximately 3667-9920 J/g due to the removal of salt from the char and, especially at 300-400 • C, showed a similar HHV with normal fossil fuels. In conclusion, salty food waste, which is pyrolyzed at a temperature of 300-400 • C and cleaned by water, can be utilized as high-energy refuse derived fuel (RDF), without adverse effects, due to the volatilization of Cl and an additional process of contaminated water.

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Pyrolysis and gasification of food waste: Syngas characteristics and char gasification kinetics

Cited by 226 publications

References 15 publications

Products’ composition of food waste low-temperature slow pyrolysis

Products’ composition of food waste low-temperature slow pyrolysis

Pyrolysis Processing of Waste Peanuts Crisps

Recycling Possibility of the Salty Food Waste by Pyrolysis and Water Scrubbing

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