Food waste co-digestion with sewage sludge – Realising its potential in the UK

Iacovidou, Eleni; Ohandja, Dieudonné‐Guy; Voulvoulis, Nikolaos

doi:10.1016/j.jenvman.2012.07.029

Cited by 178 publications

(90 citation statements)

References 79 publications

(154 reference statements)

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“…density result of 2.86 g/cm 3 was obtained. This is a value higher compared to typical natural aggregate -quartz sand (2.65 g/cm 3 ). Furthermore, a microscope evaluation was also conducted with the use of both stereo (Figure 4a) and electron (Figure 4b) microscopes.…”

Section: Methodsmentioning

confidence: 59%

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The slag original from the process of sewage sludge incineration selected properties characteristic

2017

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Abstract. This work characterizes the physical and chemical properties of slag from combustion of municipal sewage sludge in "Pomorzany" waste treatment plant in Szczecin. The technology of sludge management is based on drying the sludge in low-temperature belt driers, to a content level of at least 90%, dry mass., and then burning in a grate boiler with mobile grate. The research of the slag resulting from combustion of municipal sewage sludge was conducted using reference methods, presenting images from a scanning electron microscope. The tested waste contained from 16.300 to 23.150% P2O5 completely soluble in strong acids, pH 8.03, mineral substance 98.73% dry mass. The content of heavy metals did not exceed the permissible amount specified in the Regulation of the Minister of Agriculture and Rural Development of 18 June 2008 on the implementation of certain provisions of the Act on fertilizers and fertilization (Journal of Laws of 2008 No. 119, item. 765). The screening trials showed that 48.4% are fractions of 630 µm-1.25 mm. The results show that the waste code 19 01 12 may be used as: alternative source of phosphorus for direct application to soil treatment, for production of organic -mineral fertilizers and as construction aggregate for production of concrete mortars.

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Section: Methodsmentioning

confidence: 59%

“…Sewage sludge is characterized by a high organic load, chemical pollutions. It also constitutes a health risk, due to the presence of pathogenic bacteria, viruses and other pathogenic organisms [1][2][3][4]. The increase in the degree of sewage treatment increases the amount of sludge.…”

Section: Introductionmentioning

confidence: 99%

The slag original from the process of sewage sludge incineration selected properties characteristic

2017

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“…MSW is a heterogeneous waste stream that requires pre-treatment and post-treatment to digest. For this reason, AD facilities extend beyond the biochemical reactions and include a series of processes that involve the collection, pre-treatment, digestion, and digestate post-treatment of MSW that are often not properly accounted for or understood in policy making [4]. Depending on the MSW fractions and processes employed, AD produces biogas and digestate which may be appropriate for application to land or disposal as treated waste (Fig.…”

Section: Ad (Anaerobic Digestion)mentioning

confidence: 99%

Anaerobic Digestion in the Nexus of Energy, Water and Food

Voulvoulis¹

2015

JEPE

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Conventional waste management practices focusing principally on waste collection, treatment and disposal or even minimisation often prove insufficient to address resource management challenges in a sustainable manner. Taking into account the relationship between water provision, energy security and resource efficiency, a systems approach that delivers a strong information basis and provides opportunities for resource use optimisation at various levels of application provides opportunities for synergies that could deliver real benefits when cross-sectoral solutions are applied. By-products from sewage treatment in combination with organic solid waste such as food waste can provide a valuable source of energy if managed properly and utilised effectively. This way, waste can be seen as a raw material than can be turned into a resource rather than simply be discarded. As such, AD (anaerobic digestion), the co-digestion of food waste with sewage sludge, could become a strategic and cross-sectoral solution, if carefully applied, with the potential to convey beneficial synergies for the water and the waste industries. However, barriers to the development of such systems are diverse and often interlinked. Institutional frameworks, decision making constraints, and regulatory boundaries might still appear to require an answer for three different problems, but this can be overcome if presented as just three different parts of the same answer. Such synergies could deliver economic benefits from the additional renewable energy generated and its associated incentives, and savings on costs for the infrastructure required for the exclusive digestion of food waste.

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“…In general, animal products contain a lot of proteins and lipids; fruits, vegetables and grains are rich in carbohydrates. The elemental composition of basic nutrients indicates that significant amount of carbon is available, thus discarded food is easy to degrade [3]. It is worth noting, that pieces of packaging (plastics, paper, aluminium foil), paper tissues, toothpicks etc.…”

Section: Introductionmentioning

confidence: 99%

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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Food waste co-digestion with sewage sludge – Realising its potential in the UK

Cited by 178 publications

References 79 publications

The slag original from the process of sewage sludge incineration selected properties characteristic

The slag original from the process of sewage sludge incineration selected properties characteristic

Anaerobic Digestion in the Nexus of Energy, Water and Food

Products’ composition of food waste low-temperature slow pyrolysis

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