scholarly journals Modelling and Multi-Criteria Analysis of Anaerobic Digestion Process to Get Upgraded Methane from Bio-Residues in the City of Reykjavik

Proceedings ◽  
2019 ◽  
Vol 30 (1) ◽  
pp. 46
Author(s):  
Finger ◽  
Stepanovic ◽  
Llano

Anaerobic digestion of urban organic wastes, farming slurries or sewage sludge is a common practice in waste treatment plants. In the city of Reykjavik, the organic waste fraction constituted by 60% of biomass and 40% of food waste will be transformed by the local waste company SORPA providing biofuel for up to 10% of the cars. Such measures belong to the 2018-2030 Climate Action Plan from the Icelandic Government.

Author(s):  
Kai Schumüller ◽  
Dirk Weichgrebe ◽  
Stephan Köster

AbstractTo tap the organic waste generated onboard cruise ships is a very promising approach to reduce their adverse impact on the maritime environment. Biogas produced by means of onboard anaerobic digestion offers a complementary energy source for ships’ operation. This report comprises a detailed presentation of the results gained from comprehensive investigations on the gas yield from onboard substrates such as food waste, sewage sludge and screening solids. Each person onboard generates a total average of about 9 kg of organic waste per day. The performed analyses of substrates and anaerobic digestion tests revealed an accumulated methane yield of around 159 L per person per day. The anaerobic co-digestion of sewage sludge and food waste (50:50 VS) emerged as particularly effective and led to an increased biogas yield by 24%, compared to the mono-fermentation. In the best case, onboard biogas production can provide an energetic output of 82 W/P, on average covering 3.3 to 4.1% of the total energy demand of a cruise ship.


The development, implementation and monitoring of the Sustainable Energy and Climate Action Plan require a significant amount of data and analysis, as well as an effective and comprehensive decision making process. This chapter presents the pilot application of the proposed “MPC+ (Map - Plan - Choose - Check)” framework, through the “Action3” Decision Support System, in a Greek energy-producing community. The pilot application is conducted in three phases, namely the development of the baseline emission inventory (Phase I), the creation and evaluation of alternative Scenarios of Actions (Phase II) and the monitoring of the actions and measures implemented (Phase III). The city's univocal economy orientation of energy production through lignite is considered as a basic, inhibitory factor towards sustainability. In this respect, the city has committed to implement a series of appropriate renewable energy and rational use of energy activities in its territory, laying balanced emphasis on the local energy and heat production, and the promotion and implementation of measures on energy savings. A significant part of the CO2 emissions' reduction will come from the installation of biomass district heating systems in local communities.


2018 ◽  
Vol 7 (3) ◽  
pp. 316-346 ◽  
Author(s):  
Tiara R. Na’puti ◽  
Phaedra C. Pezzullo ◽  
Leah Sprain ◽  
Lydia Reinig

Abstract Energy democracy hopes to foster community engagement and participation in shaping our transition from fossil fuels to a renewable energy-based economy. These considerations result from critiques by environmental justice, climate justice, and just transition advocates. Although many are sympathetic to energy democracy ideals, climate goals often are articulated in math terms. This essay defines the aforementioned key terms and asks: what are the limitations and possibilities of engaging publics when climate action solely is articulated in numbers? A compelling case study is the City of Boulder – recognized as a global leader in climate science and a national leader in innovative environmental planning. This essay shares work from 2016, when the City shared a climate action plan for public feedback, supported several public participation events, and passed climate action legislation goals. We argue a just transition and energy democracy ideals are hindered if we reduce climate goals to math.


Author(s):  
Denise Regina da Costa Aguiar ◽  
Paulo Eduardo Alves Camargo-Cruz ◽  
Flávia Grecco Resende

This article sought to analyze the Climate Action Plan for the City of São Paulo 2020-2050 (PlanClima SP), published in June 2021, in dialogue with the documents: Curriculum of the City of Natural Sciences and 2030 Agenda. In a critical perspective of Environmental Education, the PlanClima SP establishes some actions towards zero carbon in 2050. In this sense, the objective of the study was to analyze the potentialities presented in the document for the development of sustainable pedagogical practices. The methodology selected for this study was qualitative, carried out with the analysis of the cited documents based on the concept of the Critical Environmental Education. The results found demonstrate practical possibilities for actions aimed at training critical and reflective students for a sustainable development. The Environmental Education actions proposed in the analyzed material point to the modification and construction of behaviors and attitudes aimed at the culture of environmental preservation. It is concluded that the discussion about carbon emissions in a critical and conscious way, through pedagogical practices, is powerful in environmental preservation and sustainability.


2018 ◽  
Author(s):  
SeaPlan

Despite global efforts to mitigate climate change, climate change impacts are occurring, and will likely increase in severity in the coming decades. The City of Boston has stated its commitment to mitigating climate change and preparing the city for its impacts through the establishment of the Climate Action Plan (2010). Through their report, the Climate Action Leadership Committee and the Community Advisory Committee of the City of Boston established the need for an indicators framework to track the progress of the City of Boston in preparing for climate change. “A Draft Climate Adaptation Indicators Framework for the City of Boston, MA” provides a pragmatic approach to establishing indicator metrics to better understand the City of Boston’s vulnerabilities and to evaluate and track its progress in implementing preparedness and resilience measures. This report describes the four-step methodology to develop a climate change adaptation (CCA) indicators framework, the resulting draft CCA indicators framework, and recommendations for next steps in implementing and honing this framework.


2017 ◽  
Vol 244 ◽  
pp. 996-1005 ◽  
Author(s):  
Dalal E. Algapani ◽  
Jing Wang ◽  
Wei Qiao ◽  
Min Su ◽  
Andrea Goglio ◽  
...  

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