Thermally assisted bio-drying of food waste: Synergistic enhancement and energetic evaluation

Ma, Jun; Zhang, Lei; Mu, Lan; Zhu, Kongyun; Li, Aimin

doi:10.1016/j.wasman.2018.09.023

Cited by 37 publications

(13 citation statements)

References 47 publications

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“…Although derived from composting, the drying of bio-wastes has been extensively studied for many purposes, such as energy recovery, bio-chemicals, and bio-fertilizer production [53]. Composting aims at producing a stabilized, safe and nutrient-enriched soil fertilizer with humic substance formation during microbial metabolism [54].…”

Section: Overall Comparisonmentioning

confidence: 99%

Evaluation of Infrared Radiation Combined with Hot Air Convection for Energy-Efficient Drying of Biomass

et al. 2019

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Cost-effective biomass drying is a key challenge for energy recovery from biomass by direct combustion, gasification, and pyrolysis. The aim of the present study was to optimize the process of biomass drying using hot air convection (HA), infrared (IR), and combined drying systems (IR-HA). The specific energy consumption (SEC) decreased significantly by increasing the drying temperature using convective drying, but higher air velocities increased the SEC. Similarly, increasing air velocity in the infrared dryer resulted in a significant increase in SEC. The lowest SEC was recorded at 7.8 MJ/kg at an air velocity of 0.5 m/s and an IR intensity of 0.30 W/cm2, while a maximum SEC (20.7 MJ/kg) was observed at 1.0 m/s and 0.15 W/cm2. However, a significant reduction in the SEC was noticed in the combined drying system. A minimum SEC of 3.8 MJ/kg was recorded using the combined infrared-hot air convection (IR-HA) drying system, which was 91.7% and 51.7% lower than convective and IR dryers, respectively. The present study suggested a combination of IR and hot air convection at 60 °C, 0.3 W/cm2 and 0.5 m/s as optimum conditions for efficient drying of biomass with a high water content.

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Section: Overall Comparisonmentioning

confidence: 99%

Evaluation of Infrared Radiation Combined with Hot Air Convection for Energy-Efficient Drying of Biomass

et al. 2019

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“…Aer 144 h, the MC of sludge aer EDW was 44%, which was 6.3% lower than the control sludge. According to Ma et al and Velis et al, 40,41 these results may be attributed to the fact that higher microbial activity of sludge pile aer EDW produces more heat, which increases the matrix temperature; the resulting higher temperature (T > 50 C) effectively promotes water evaporation. Additionally, owing to the lysis of sludge aer EDW, intracellular water can be easily removed.…”

Section: Effect Of Edw On the Bio-drying Processmentioning

confidence: 99%

Electro-dewatering pretreatment of sludge to improve the bio-drying process

Liu

et al. 2019

RSC Adv.

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“…Solid fuel with higher energy content is obtained at the end of the bio-drying process. Bio-drying method uses energy produced from microbial degradation in the FW to heat up water with the assistance of forced aeration (16). This condition increases water evaporation and stimulates microbial degradability.…”

Section: Thermally Assisted Bio-dryingmentioning

confidence: 99%

“…These mixed wastes contaminate other MSW components and recyclable materials in them. Dewatering and drying are very important for achieving high energy recovery from FW and thermal drying is still a main method for FW drying (16). A correct pre-treatment method of FW can convert it into feedstock for incinerators or boilers.…”

Section: Introductionmentioning

confidence: 99%

The Research on Food Waste Pre-Treatment Technology for Incineration in Malaysia

2020

J. Environ. Treat. Tech.

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Food waste and food loss are used to describe materials that are actually produced for consumption, but are discarded, lost, degraded or contaminated. Food waste (FW) is one of the main parts of municipal solid waste. Landfill is not preferable when compared with other types of waste handling method. It has been reported that the impact of landfill on climate change can be ten times higher than other waste handling methods. However, most FW end up in landfills. This paper reviewed the performance of several food waste pre-treatment technologies to convert FW into feedstock for incinerators/boilers in terms of electrical power generation purposes. The performance of food waste pre-treatment methods and their products were extensively discussed and compared in this paper in terms of calorific value, energy density, and compound reduction, which later directly corresponded with the energy, environmental, and economic factors for the sustainability of future renewable power generation.

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Thermally assisted bio-drying of food waste: Synergistic enhancement and energetic evaluation

Cited by 37 publications

References 47 publications

Evaluation of Infrared Radiation Combined with Hot Air Convection for Energy-Efficient Drying of Biomass

Evaluation of Infrared Radiation Combined with Hot Air Convection for Energy-Efficient Drying of Biomass

Electro-dewatering pretreatment of sludge to improve the bio-drying process

The Research on Food Waste Pre-Treatment Technology for Incineration in Malaysia

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