Impact of the pre-collection phase at different intensities of source segregation of bio-waste: An Italian case study

Maria, Francesco Di; Micale, Caterina; Morettini, Emanuela

doi:10.1016/j.wasman.2016.04.026

Cited by 10 publications

(3 citation statements)

References 18 publications

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“…Among the different activities involved in the management of urban waste, the collection is one of the most relevant, both for the cost and for the potential impacts on the quality of the urban context (Di Maria et al, 2016). This activity requires care in the administration of the best alternatives from the environmental point of view as well as in terms of work safety, since the employees involved with it are subject to physical, chemical, biological, ergonomic and accident risks.…”

Section: Introductionmentioning

confidence: 99%

Analysis of environmental risks and accidents at work in urban solid waste collection services

Ferrão

Moraes

2021

Gest. Prod.

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The heterogeneity and the volume of solid urban waste generated daily cause difficulties in their management, which causes environmental impacts, health and public safety problems. Among all waste management activities, collection is one of the most relevant from an occupational point of view because employees are subject to physical, chemical, biological, ergonomic risks as well as suffering accident. This article aims to instruct companies to apply multidisciplinary management tools that conciliate and serve as a basis for decision making related to environmental and occupational safety management. Therefore, the Ad Hoc Environmental Impact Assessment techniques and the RMT Risk Management Tool were used to identify the environmental impacts generated and the risks to which employees in the urban solid waste collection sector are exposed. It happened through the collection of operational, environmental information and work safety data, in 2017, of companies operating in 7 (seven) municipalities in the state of Rio Grande do Sul. The Ad Hoc report showed that the environmental aspects of surface water, groundwater, soil, odor and air pollution, generate negative and irreversible environmental impacts. Furthermore, the analysis of accidents at work, the identification of the major agents that cause accidents at work and the nature of injuries, showed their high frequency and severity. In total 60 accidents were recorded and all occurred with garbage collectors. Among these, 13 had as causative agents “glassware, fiberglass, blade, except vial, bottle” and the most recurrent types of injuries were “excoriation and abrasion (superficial wound)” and “by cutting, laceration, blunt wound, puncture (open wound)”, both with 22% of occurrence, which generate work leave. Furthermore, the elaboration of Action Plans and application of the 5W2H Quality Management tool proved to be excellent tools for assessments regarding the minimization of environmental impacts and the control of accidents at work.

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Section: Introductionmentioning

confidence: 99%

Analysis of environmental risks and accidents at work in urban solid waste collection services

Ferrão

Moraes

2021

Gest. Prod.

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“…Source-segregation is considered as a solution in a nonlandfill waste management system, but plenty of environmental, economic and social factors, together with changing governance and political systems have an impact on the final effect. Source-segregation of waste may be intractable within high density urban communities [6,7]. Among municipal solid wastes (MSW) collected globally, only 15% is recycled.…”

Section: Introductionmentioning

confidence: 99%

Treatment of By-Products Generated from Anaerobic Digestion of Municipal Solid Waste

Seruga

Krzywonos

Wilk

2019

Waste Biomass Valor

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Purpose This study aimed to examine the possibilities of the treatment of the by-products generated in the anaerobic digestion (AD) of the organic fraction of municipal solid waste (OFMSW): oxygen stabilization (composting) of the solid digestate and pretreatment with air stripping of the effluents (liquid digestate and leachate from maturation field and reactors from composting). Methods Oxygen stabilization (OS) was performed in full-scale in a mechanical-biological treatment (MBT) plant using three different methods, using an open field or enclosed box reactor with aeration. The ammonia stripping was performed in a pilot-scale installation using effluents from AD (liquid digestate) and OS (leachate from maturation field and reactors). Results The lowest self-heating possibility after the OS was recorded at 28.5 °C, which proves that the most stabilized was the sample after processing with structuring material addition. Due to air stripping, the highest efficiency of ammonium ions removal was noted at the level of 50.6%, with an initial pH value of 10.5, after 12 h. Among the examined factors pH value was found to be significant [the determination coefficient (R 2) of 0.93]. Conclusions The oxygen stabilization of the digestate requires the structuring material addition before being placed in the reactor with aeration. The inert fraction from the ballistic separation of the OFMSW can be an interesting solution, as required structuring material. Air stripping as the effluents pre-treatment step can meet the MBT plants expectations.

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“…For instance, the UK increased diversion from 11% in 2000-2001to 43.2% in 2011-2012(DEFRA, 2012, however, the rate of progress has reduced year on year since 2005 and from 2012 to 2013 the diversion rate only increased by 0.3% (DEFRA, 2013). Often source-segregation is advocated as a 'key to the success' in non-landfill waste management systems (Yang et al, 2016), but, success is determined by the complex interplay of environmental, economic, and social factors (Di Maria et al, 2016;Tavares et al, 2009;Rispo et al, 2015;Bulkeley & Gregson, 2009) interacting within changing governance and political systems (Bulkeley et al, 2005). Interestingly, Rispo et al, (2015) has suggested that that source-segregation may be particularly challenging within hard to reach high density urban communities.…”

Section: Introductionmentioning

confidence: 99%

Evaluating an anaerobic digestion (AD) feedstock derived from a novel non-source segregated municipal solid waste (MSW) product

Blake¹,

Halim²,

Gray³

et al. 2017

Waste Management

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In many nations industrial scale AD of non-agricultural waste materials (such as MSW) has not yet reached its full potential, often constrained by the lack of secure, inexpensive, high quality AD feedstocks, and markets for the resulting digestate material. We tested the output material of a high throughput novel industrial process to define its potential as an AD feedstock (based on quality and consistency). This process, designed to circumvent the constraints of source segregation while still generating segregated waste streams, resulted in the production of a temporally homogenous fibrous material with: an average moisture content of 44.2 (±2.33)%; C:N ratio of ∼32.9:1 (±3.46:1), C:P ratio of ∼228:1 and gross calorific value of 17.4 (±0.29)MJ/kg. This material provided a CH yield of between 201 and 297m CH/tonne (271-401mCH/tonne) comparable to commonly used AD feedstocks. Material contaminant levels were temporally consistent (P>0.05), (average values being Cd 0.63 (±0.19), Cu 56.3 (±7.45), Cr 51.4 (±4.41), Hg<0.3, Ni 28.9 (±5.17), Pb 79.2 (±23.71), Zn 202 (±44.5), total polyaromatic hydrocarbons (PAH) 2.2 (±0.3), and total polychlorinated biphenyls (PCB) (<0.2)mg/kg). Calculated digestate contaminant levels were below the median contaminant threshold limits for anaerobic digestates of all countries within the European Union i.e. of Cd 3.35, Cu 535, Cr 535, Hg 8.15, Ni 185, Pb 397.5, Zn 2100mg/kg. We suggest that novel high throughput processes that produce high quality AD feedstocks, may have a place in further diversion of waste from landfill.

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Impact of the pre-collection phase at different intensities of source segregation of bio-waste: An Italian case study

Cited by 10 publications

References 18 publications

Analysis of environmental risks and accidents at work in urban solid waste collection services

Analysis of environmental risks and accidents at work in urban solid waste collection services

Treatment of By-Products Generated from Anaerobic Digestion of Municipal Solid Waste

Evaluating an anaerobic digestion (AD) feedstock derived from a novel non-source segregated municipal solid waste (MSW) product

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