Anaerobic co-digestion of oil refinery waste activated sludge and food waste

Castro, Tayane Miranda Silva de; Cammarota, Magali Christe; Pacheco, Élen Beatriz Acordi Vasques

doi:10.1080/09593330.2021.1946598

Cited by 4 publications

(17 citation statements)

References 32 publications

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“…The study was carried out in four stages: 1) identifying the internal and external aspects of AD, based on a literature review, to compile the SWOT matrix; 2) ranking elements of the SWOT matrix based on sustainability criteria; 3) matching information from the SWOT matrix to assess the positive and negative aspects on AD for oil refinery waste activated sludge; 4) reassessing the SWOT matrix based on primary data obtained experimentally in a previous study [ 14 ].…”

Section: Methodsmentioning

confidence: 99%

“…The use of experiments is also relevant to validate secondary data. The secondary data sources were compared with the primary data obtained from a previous study [ 14 ]. Thus, an analysis was conducted to determine whether the information obtained in the SWOT analysis was confirmed, refuted or inconclusive for OR-WAS and if points that contrasted with the literature were included in the SWOT matrix for general sludge.…”

Section: Methodsmentioning

confidence: 99%

“…AD is an alternative use for OR-WAS, as reported by Castro et al [ 14 ]. This process involves the biological conversion of organic waste by microbial population in the absence of oxygen [ 15 ].…”

Section: Introductionmentioning

confidence: 92%

“…No studies were found that assess treatment techniques for industrial or refinery sludge. As such, this study aimed to use SWOT analysis to assess the sustainability of AD technology for treating secondary sludge generated in oil refinery-activated sludge systems, based on the literature and experimental data from a previous study [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

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Sustainability of the anaerobic digestion of oil refinery secondary sludge

2023

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Among the waste generated at oil refineries, secondary sludge from biological wastewater treatment processes (activated sludge systems) stands out. This paper aimed to assess the use of anaerobic digestion (AD) to treat sludge by SWOT (Strength, Weakness, Opportunity, and Threat) analysis, ranking the different factors based on sustainability criteria. Additionally, the SWOT factors were matched (TOWS matrix) to help interpret the results. AD was found to be compatible with sustainability. The results demonstrated that the strength of AD (reduced organic load) compensates for its weaknesses (need for operational control and initial implementation costs), thereby avoiding the threat (sludge composition) and making the most of the opportunity (lower disposal cost). AD and co-digestion (added with food waste) used to treat oil refinery sludge showed that around 60% of the factors analyzed were confirmed experimentally. It was concluded that AD should be considered in the sustainable treatment of oil refinery waste activated sludge, especially when mixed with other readily biodegradable wastes.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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Sustainability of the anaerobic digestion of oil refinery secondary sludge

2023

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“…Outputs may vary according to the processing system [66] and research-led system improvement continues to build capacity and add value to household food waste both at policy and practical levels [67][68][69][70]. For example, industrial waste management is looking at how household food waste can be used to deal with biological sludge from oil refineries [71], or sewage [72,73] or in bioproduct development [74]. In 2016/17, biogas provided around 0.5% of Australia's electricity with an estimated 9% capacity at that time [75].…”

Section: Household Food Waste Processing Systems (The Outputs)mentioning

confidence: 99%

Out of Sight, Out of Mind: Using Post-Kerbside Organics Treatment Systems to Engage Australian Communities with Pro-Environmental Household Food Waste Behaviours

et al. 2022

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Dealing with the wicked problem of global food waste and loss is a complex and challenging area. In Australia, increased political will has landed the diversion of domestic food waste from landfill squarely at the feet of local government (councils), often requiring significant change to kerbside collections systems. This paper discusses how post-kerbside household food waste treatment systems can encourage pro-environmental behaviours. To achieve this, current food waste literature is examined against kerbside domestic waste collection measurable outcomes (diversion rates, system uptake and contamination rates). The hypothesis is that specific interventions can establish, or rebuild, community trust, responsibility and pro-environmental behaviours around food waste avoidance and diversion. Two post-kerbside systems—commercial composting and anaerobic digestion—provided the framework. Two themes emerged from the study: (1) the benefits of connecting the community with the interactions of household food waste inputs with post-treatment outputs (compost, soil conditioners, digestates and biogases); and (2) providing engaged communities with pathways for sustainable, pro-environmental actions whilst normalizing correct kerbside food waste recycling for the less engaged (habitual behaviours, knowledge and cooperation). The paper contributes to understanding how councils can connect their communities with the issues of household food waste.

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