Optimization of bio-drying of kitchen waste: inoculation, initial moisture content and bulking agents

Song, Xiao Yan; Ma, Jun; Gao, Jian-dong; Liu, Yanbo; Hao, Yongce; Li, Wei; Hu, Ruhai; Li, Aimin; Zhang, Lei

doi:10.1007/s10163-015-0450-3

Cited by 19 publications

(4 citation statements)

References 27 publications

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“…To achieve efficient drying of MSW, it is imperative to ensure high porosity within the waste matrix [33]. Several researchers [4,33,80,81] have used BA to improve the efficiency of bio-drying process by adjusting the initial moisture content and free air space of waste which provides high porosity and easier transport of oxygen through the waste matrix. Table 1 shows the reviewed drying methods, drying parameters and MSW properties before and after drying.…”

Section: Effect Of Bulking Agentsmentioning

confidence: 99%

Drying methods for municipal solid waste quality improvement in the developed and developing countries: A review

Tun

Juchelková

2018

Environmental Engineering Research

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Nowadays, drying methods for municipal solid waste quality improvement have been adopted in the developed and developing countries to valorize wastes for a renewable energy source, reduce dependency on fossil fuel and keep safer disposal at landfills. Among them, biodrying, biostabilization, thermal drying and solar drying are the most common. Drying of municipal solid waste could offer several environmental and economic benefits. Therefore, this review highlighted the drying methods for municipal solid waste quality improvement around the world and compared them based on the reduction of moisture, weight and volume of municipal solid wastes against drying temperature and time by using statistical analysis. It was observed that the drying temperature of different drying methods accounted for 115 ± 40°C for thermal drying, 59 ± 37°C for solar drying, 55 ± 15°C for biodrying and 58 ± 11°C for biostabilization. Among the drying methods, thermal drying provided the shortest drying time. The moisture reduction, weight reduction, volume reduction and heating value increase of municipal solid waste could vary with drying temperature and time. Finally, the benefits and drawbacks of different drying methods were specified, and recommendations were made for the future efficient drying.

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Section: Effect Of Bulking Agentsmentioning

confidence: 99%

Drying methods for municipal solid waste quality improvement in the developed and developing countries: A review

Tun

Juchelková

2018

Environmental Engineering Research

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“…Conditioners play an important role in the bio-drying process of sludge. By adding conditioners, the porosity of the mixed material can be increased, the initial moisture content can be reduced, and the organic matter content can be increased, thereby improving the bio-drying performance of sludge and enhancing the drying effect [5,15]. Some conditioners are natural substances, but some need to be processed from raw materials.…”

Section: Introductionmentioning

confidence: 99%

Study on the Effect of Thermal Assisted Combined Plant-Based Biomass Conditioning on Dehydrated Sludge Bio-Drying

Li,

Luo,

Jiang

et al. 2024

Processes

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In recent years, the production of municipal sludge has gradually increased, and finding suitable sludge treatment and disposal technologies is an urgent problem that needs to be solved. Bio-drying of sludge is a relatively efficient and convenient drying method, but currently, there are still problems with unstable drying effects and high moisture content of dried products, which limits the subsequent utilization of bio-drying products. This article uses a thermal assisted bio-drying device that simulates carbonization waste heat reflux, and uses corncob, straw, sawdust, and rice husk as conditioners to carry out bio-drying of dehydrated sludge. The influence of the types and ratios of conditioner under thermal assistance on the bio-drying of dehydrated sludge is explored. The results showed that the moisture removal efficiency of the corncob and straw groups was better, and their material moisture content could be reduced to below 10% within 24 h. The lower calorific value of straw-sludge drying products was the highest, at 11,608.8 kJ/kg. The best conditioner under the conditions of this experiment was straw, and the drying effect was best when the mass ratio of dehydrated sludge to straw was 4:1. The research results contribute to promoting the development of sludge bio-drying technology.

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“…Thus, the porosity of the material matrix becomes an important parameter for the process. 14 Insufficient porosity will reduce the rate of aerobic degradation and result in lower temperature values. Furthermore, low porosity of the biodrying bed may cause formation of anaerobic regions generating methane and odor emissions.…”

Section: Introductionmentioning

confidence: 99%

Biodrying for fuel recovery from sewage sludge: An integrated evaluation by ultimate and proximate analyses

Özbay

Akdemir

2021

Env Prog and Sustain Energy

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This study investigates the utilization of the biodrying process, which is an eco-friendly approach for sewage sludge management to produce a fuel-like product.Biodrying tests were conducted for six trials containing different amounts of bulking agents (straw and sawdust). Higher volatile matter removal was achieved for trials with sawdust as a result of better porosity conditions. Consequently, biodrying indexes were higher for straw containing trials (7.73-30.85) with straw than those trails with sawdust (6.94-13.99). Trials with straw resulted in biodried materials with lower moisture content and higher calorific value due to lower water holding capacity of straw. However, sawdust provided better fuel quality due to the higher bulk density of the product. Thus, fuel value indexes determined for trials with sawdust (81.62-152.17) were remarkably higher than those of trials with straw (16.02-68.97). Furthermore, biomass characterization indexes (>25.000) indicated that products with sawdust can be used as promising alternatives to biomass such as wood chips and wood chunks in combustion facilities.

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Optimization of bio-drying of kitchen waste: inoculation, initial moisture content and bulking agents

Cited by 19 publications

References 27 publications

Drying methods for municipal solid waste quality improvement in the developed and developing countries: A review

Drying methods for municipal solid waste quality improvement in the developed and developing countries: A review

Study on the Effect of Thermal Assisted Combined Plant-Based Biomass Conditioning on Dehydrated Sludge Bio-Drying

Biodrying for fuel recovery from sewage sludge: An integrated evaluation by ultimate and proximate analyses

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