Managing biowaste and promoting sustainability - profiling community composting

The voluntary and community waste sector makes an important contribution to waste objectives (Williams et al, 2006). The community composting sector would appear to be leading the development of innovative biowaste collection and processing systems in areas unsuitable for traditional kerbside. Such schemes can contribute to developing local areas by improving local soils and green spaces as well as diverting waste from landfill. However, this is often only part of the story. Well managed community activity has huge potential for providing work and volunteering opportunities, as well as bringing people together and improving skills, knowledge and self-confidence. Considered collectively these factors may contribute to local sustainability more effectively than reliance on meeting particular targets. Although there is some anecdotal and financial evidence for the growth in, and diversity of, community composting, there is very little comprehensive data that draws together the activity of the sector as a whole. The paper addresses this gap by presenting findings from a national survey profiling community based composting. Results show that a range of activities fall under the umbrella of community composting and these include: collecting / receiving and processing material, running education campaigns, promoting home composting and facilitating others to develop / promote community composting. The survey recorded over 100 groups actively engaged in at least one of these activities with many involved in more than one. Overall 80% of groups are involved in collecting and composting material and 20% are involved in composting related activity other than collecting and composting, such as educational and promotional activities. The sector has a large potential for providing work and volunteering opportunities and results indicate over 1,300 volunteers, trainees and staff involved in community composting. In addition, most groups (68%) carry out composting alongside other waste and recycling activities or, more commonly, alongside non-waste activities such as community gardens, city farms, local food production, day and residential services and work integration schemes. These activities may bring about positive environmental impacts and social benefits over and above quantities of material diverted from landfill, and these benefits often cut across different policy agendas. Knowing and understanding these impacts and benefits is important in understanding the role of the community composting sector. In addition to results from profiling the sector, this paper will also present findings from participatory research with groups to develop ways to better understand and demonstrate the impacts of their work

Enhancing sustainable biowaste management in the UK: the role of the commercial and community composting sectors

This paper considers the different roles of the commercial and community composting sectors in contributing to sustainable biowaste management in the UK. Legislation and policy have driven the rapid development of a diverse composting sector. The next section sets out this policy context. This is followed with an analysis of the growth in, and characteristics of, the commercial composting sector and then the community composting sector. It is contended that both sectors have different strengths in contributing to sustainable biowaste management. For commercial composting this is based around large-scale composting and quality products, for the community sector this is based around services in difficult collection environments, local sustainability, promoting social cohesion and building stronger communities. The extent to which the benefits from the commercial and composting sectors will be realised in the future will depend on whether the sectors can develop synergistically and the extent to which this is encouraged by national and local policies

Factors influencing the nematode community during composting and nematode-based criteria for compost maturity

Pilot studies indicate that shifts in the nematode species composition, life strategies and feeding behavior during composting appear to be fairly consistent and, therefore, promising as a potential tool to assess compost maturity. However, this has been only based on a limited number of, mainly, non-replicated observations. In this study, we tested whether the nematode community succession patterns are recurrent for parallel processes and assessed the relationship between the changes in the nematode community and potential important variables (i.e., temperature, duration of composting and the microbial community). The nematode and microbial community of three simultaneously running Controlled Farm Composting and a reference Green Waste composting process were analyzed through time. Bacterial-feeding enrichment opportunists were most numerous during and directly after the heat peaks. Subsequently, the bacterial-feeding/predator community dominated and the fungal-feeding nematodes became more dominant during maturation, confirming general community patterns from previous experiments. Nematode abundances significantly fluctuated with temperature and the relative abundance of fungal-feeding nematodes increased as the duration of the curing process increased. The amount of fungal-feeding nematodes was associated significantly with both duration of composting and temperature, and the F/(F + B) ratio was only significantly associated with duration of composting. Based on these results, and additional data from an industrial reference compost process and on available literature, a Nematode-based Index of Compost Maturity (NICM) is proposed, combining four nematode-based criteria (i.e., nematode abundance, F/(F + B) ratio, the presence of more than one fungal-feeding taxon and the presence of diplogasterids). Nevertheless, the NICM should be considered as work in progress which should be tested for a wider range of composts from diverse feedstock mixtures, locations (sites) and composting techniques, to validate the use of the index and allow more reliable interpretation of particular values of this index

Unlocking the potential of community composting: Full project report

Community based composting schemes can make valuable contributions to the development of local infrastructure and amenities by improving soils and green spaces in addition to diverting waste from landfill. Furthermore, well managed community activities have potential for providing work and volunteering opportunities, as well as bringing people together and improving skills, knowledge and self-confidence. Considered collectively these factors may contribute to local sustainability more effectively than focusing on meeting particular waste related targets. Although there is some anecdotal and financial evidence for the growth in, and diversity of, community composting, there is very little comprehensive data that draws together the activity of the sector as a whole. This research set out to understand and assess the current and potential role of the community composting sector in achieving Defra’s waste related targets and Government’s other wider environmental and social objectives. Thus this research is timely both in terms of establishing what has been achieved in the community composting sector to-date and in terms of possibilities for future achievements

Community composting activity in the UK - 2006

This report presents findings from a comprehensive survey of the community composting sector across the UK in 2006. The report characterises community composting activity in terms of: 'The types of groups and organisations involved in the sector 'The range, mix and details of composting and related activities 'Volunteer and employment opportunities 'The sector's work and relationship with local authorities 'Barriers, problems and opportunities 'Evaluation processes 'Income and funding 'Age of the sector and future plans This report is one output from a Defra funded project called 'Unlocking the Potential of Community Composting' (WRO211). The project is lead by the Integrated Waste Systems research group at the Open University in association with the Community Composting Network (CCN), London Community Recycling Network (LCRN) and the New Economics Foundation (nef

Empowering Community via Composting Practices in Promoting Sustainable Lifestyle

Composting practice is among the many sustainable practices that can be easily carried out through either small or large scale efforts. Unfortunately, composting has not been widely practiced by the public due to lack of awareness. This paper is part of a research project to promote and diffuse sustainable lifestyle to the community by exploring how the sustainability agenda can be partly addressed through composting practices carried out within the Universiti Sains Malaysia, Penang campus to its surrounding neighborhood. The project highlights the university community engagement to achieve community empowerment with regard to sustainable urban lifestyle. The result indicates a need to increase community awareness with regards to composting practices in order to inculcate sustainable lifestyle. The university community can be regarded as the agents to diffuse and transfer knowledge on composting best practices

Black, Gold, and Green: Food Waste Management at Bryant University

The basis of this project is to examine the food waste management system at Bryant University, and to make feasible, sustainable, and cost-effective solutions for improving the system. An effective, sustainable food waste management system is an important achievement for the university in particular as Rhode Island’s landfill is quickly reaching its capacity. The study focuses on analyzing the advantages and disadvantages of the university’s current solution of sending the waste to a local pig farmer versus alternative options such as composting the waste. Research methods include surveying local food recycling and composting experts and key stakeholders, a numeric ranking system to analyze different options for Bryant, as well as benchmarking with comparable colleges and universities that have launched successful food waste management solutions

Sustainable valorisation of organic urban wastes : insights from African case studies

Understanding the problems and potentials of the organic waste stream is perhaps the single most important step that city authorities in Africa could take in moving towards sustainable, affordable, effective and efficient waste management. This publication presents four examples of recent attempts to manage organic waste sustainably in the African context. The participants in the ‘Nairobi organic urban waste’ project have structured this case exercise in order to use the case studies as object lessons, to harvest genuine insights into the feasibility of a variety of ways to successfully and sustainably valorise urban organic waste streams. Three contemporary case examples of compost production are presented. These include composting by a community-based organisation in the Kenyan private sector and by a public-private partnership in Malawi. In all three cases, the project and case study focus is on the relations between city waste and the agricultural supply chain. A fourth case study describes the technical and economic potential to produce and use biogas from urban organic waste

Characteristics of Compost Obtained from Winemaking Byproducts

A model procedure for the sustainable management of plant biomass related to wine production, namely vine branches from agricultural practices in the vineyard and marcs remaining after grapes crushing, was devised. An artificial humification process was set up that could respond to the needs of environmental sustainability and could be a safe way to be reintroduce in the vineyard part of the organic matter previously exported, thus contributing to recover or maintain vineyard soil fertility. Two different strategies for composting were tested, namely a static pile, made by branches and marcs, and a pile that was fed twice a year alternatively with vine branches and grape marcs. The experimentation lasted 710 days, during which environmental parameters, i.e. temperature and rainfalls were monitored. Growth dynamics of the principal functional groups of microorganism were followed. A characterization of the composted material was obtained by measuring several parameters among which, pH, carbon, nitrogen, sulfur and heavy metals content. The characteristics of the produced compost fulfill the requirements prescribed by the Italian legislation regarding the use of compost as soil amendment. Germination tests demonstrated the absence of phytotoxicity and conversely evidenced a stimulating activity towards root development