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Opportunities for value addition to selected Western Cape organic waste streams
The report identifies five primary lignocellulosic waste streams in the Western Cape: invasive alien vegetation (IAV), industrial composite wood materials, pallets, paper sludge, and green waste. It evaluates the current utilisation of these resources, the barriers to unlocking their value—such as high logistics costs for IAV and chemical toxicity in composites—and identifies potential business partners and stakeholders. The analysis concludes that while some streams like paper sludge and green waste have established markets, others like IAV and composite woods offer opportunities for higher-value products and energy recovery if technical and logistical challenges are addressed.
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Document type: Report
Combustibles ingénieux
The document describes 'smart-sourced fuels' as ecological heating products made from local agricultural residues, wetland plants, and forestry waste. It highlights the environmental and economic benefits of these fuels in Manitoba, specifically noting the potential of cattails (quenouilles) as a sustainable biomass source. The text provides data on biomass availability around Winnipeg and Brandon and argues that replacing coal with biomass could significantly reduce greenhouse gas emissions in the province.
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Document type: Fact sheet
Cattail Biomass in a Watershed-Based Bioeconomy
The report details the 'Lake Winnipeg Bioeconomy Project', which investigates the use of cattail (Typha spp.) as a sustainable biomass feedstock. Through pilot harvests at Pelly’s Lake, Manitoba, the study demonstrates that using a rotary disc mower with conditioning rolls improves harvesting efficiency and drying times, enabling the use of large square balers. The harvested biomass was processed into solid fuel cubes and biocarbon (biochar), with the latter showing a higher heating value (31.41 MJ/kg) than wheat straw biocarbon (23.75 MJ/kg). Nutrient analysis indicates that cattail ash can serve as a potassium-rich fertilizer, though its phosphorus is largely insoluble at neutral pH. The report estimates the total cattail biomass resource in southern Manitoba between 2.7 and 5.4 megatonnes per year.
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Document type: Report
Biochar—climate change mitigation strategy
The report examines biochar—charcoal produced from biomass to store carbon—as a method for removing carbon dioxide from the atmosphere. While biochar could theoretically sequester carbon for thousands of years and improve soil fertility, a review of 212 peer-reviewed references indicates that current data are insufficient to accurately estimate its long-term stability. Consequently, the report concludes it is premature to rely on biochar as an effective climate mitigation tool or to allocate public resources for its deployment.
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Document type: Report
The Scientific Basis for Biochar as a Climate Change Mitigation Strategy: Does it Measure Up?
The report concludes that there is insufficient scientific evidence to support the use of biochar as a reliable climate change mitigation tool. A review of 329 references found that only 15 field studies measured biochar decomposition, and of those, only six provided data to estimate stability. These six studies showed wildly varying results, with mean residence times (MRT) ranging from 8.3 years to over 3,000 years. The authors argue that the science is too immature to justify public investment in biochar for carbon sequestration, as the influence of biochar on the whole system carbon balance remains poorly quantified.
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Document type: Report
Climate Economics: The State of the Art
The report argues that climate economics lags behind climate science, often relying on outdated damage functions and oversimplified cost-benefit frameworks. It advocates for a shift toward standards-based (precautionary) decision-making to avoid catastrophic tipping points, such as the collapse of ice sheets or the Amazon rainforest. The authors recommend that models incorporate endogenous technological change, explicit discount rate justifications, and regional equity considerations to provide policy-relevant guidance for staying below a 2°C warming threshold.
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Document type: Report
Greenhouse gas and air pollutant emissions of alternatives for woody biomass residues
The report evaluates 'post-harvest to grave' emissions for woody biomass residues in the Pacific Northwest and Alaska. It finds that alternatives displacing fossil fuels—such as industrial boilers, biochar, and integrated gasification—significantly reduce greenhouse gases, carbon monoxide, and fine particulate matter compared to on-site burning. Conversely, residential wood stoves and fireplaces often increase local air pollutants.
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Document type: Report
The Plus Side
The report outlines how tropical forests can be transitioned from net carbon emitters to net sinks through the REDD+ framework. It details specific reforestation, restoration, and sustainable production forestry techniques, while emphasizing the necessity of 'additional' carbon benefits beyond business-as-usual baselines. The authors argue that achieving zero net emissions by 2030 requires a combination of reducing deforestation and scaling up sequestration activities, supported by international financial incentives and national policies that protect biodiversity and the rights of indigenous and local communities.
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Document type: Report
REDUCING BLACK CARBON OFFERS IMMEDIATE OPPORTUNITY FOR CLIMATE AND PUBLIC HEALTH BENEFITS
The document advocates for targeting black carbon—a potent short-lived climate forcer—as a 'no regrets' strategy to slow near-term global warming and reduce premature deaths. It identifies diesel engines, cook stoves, and agricultural burning as primary controllable sources and proposes specific regulatory and financial mechanisms, such as diesel particulate filters and clean stove deployment, to address them.
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Document type: Statement
The Economics of 350
The report argues that stabilizing atmospheric CO2 at 350 ppm is economically feasible, with estimated costs ranging from 1% to 3% of global GDP per year. It challenges 'go slow' economic recommendations, specifically critiquing the DICE model's default assumptions, and suggests that the costs of inaction far outweigh the costs of rapid mitigation. The authors emphasize that achieving this target requires a comprehensive global transition to carbon-free energy and the implementation of negative emissions technologies, such as large-scale reforestation and biomass energy with carbon capture and storage (CCS).
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Document type: Report
AGRICULTURAL FIRES AND ARCTIC CLIMATE CHANGE
The report examines how agricultural fires in the Northern Hemisphere, particularly in Russia, Kazakhstan, and China, emit black carbon (soot) that travels to the Arctic. This soot reduces the albedo of snow and ice, accelerating melting and contributing to Arctic warming. The document argues that while these fires are smaller than forest fires, their smoldering nature produces higher concentrations of black carbon. It identifies Russia as the dominant springtime emitter and suggests mitigation strategies including shifting burning seasons, implementing biochar technology, and improving international fire management coordination.
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Document type: Report
Expanding Agriculture’s Role in a Post-2012 Climate Change Regime
The document analyzes the role of agriculture in global GHG mitigation and adaptation, highlighting that while the sector has a technical mitigation potential of 5.5 to 6 GtCO2e per year by 2030, progress is hindered by accounting complexities and non-permanence of soil carbon. It details Canada's domestic offset experiences, such as Alberta's tillage protocol, and argues for expanding the Clean Development Mechanism (CDM) or creating new market mechanisms for sustainable development (MMSDs) to engage developing countries, where 70% of agricultural mitigation potential resides.
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Document type: Report
Rapid Trade and Environment Assessment (RTEA) 2009 National Report for Namibia
The 2009 Rapid Trade and Environment Assessment (RTEA) for Namibia argues that the country should pivot from a bulk export model toward high-value niche sectors based on its comparative advantages in biodiversity and dryland landscapes. The report identifies significant opportunities in carbon markets, ecotourism, and indigenous natural products, while warning against 'green protectionism' and technical barriers to trade, such as EU sanitary requirements for red meat. It highlights the vulnerability of Namibia's water and agricultural sectors to climate change and recommends the establishment of a national forum on trade and environment to coordinate inter-ministerial policies and international negotiating positions.
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Document type: Report
Bioenergy with Carbon Capture and Storage as a Tool for Climate Change Mitigation
The document examines BECCS as a tool for carbon dioxide removal (CDR) and energy production, detailing the interactions between biomass feedstocks, conversion technologies, and system outputs. It highlights the potential for BECCS to mitigate emissions from forest thinnings and agrifood wastes, while warning against land-use changes that compromise carbon sinks. The authors emphasize that BECCS cannot be categorically labeled as beneficial or detrimental, as lifecycle impacts vary based on the supply chain and technology used.
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Document type: Policy brief
CRCF background information
The briefing examines the EU's Carbon Removals Certification Framework (CRCF), specifically criticizing the Delegated Act for permanent removals. It argues that the current methodologies for Direct Air Capture with Storage (DACCS), Biomass with capture and storage (BioCCS), and Biochar fail to account for environmental knock-on effects, lack proper monitoring and liability, and breach the 'Do No Significant Harm' principle. The author warns that these flaws could lead to certified activities increasing atmospheric emissions and undermine the EU's path to climate neutrality, potentially exposing buyers to greenwashing accusations if integrated into the EU Emission Trading System or voluntary markets.
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Document type: Briefing
Carbon negative handbook - November 2024
The handbook evaluates six carbon removal methods: BioCCS, afforestation/reforestation, biochar, terrestrial enhanced weathering, DACCS, and soil carbon sequestration. It highlights the trade-offs between permanence, cost, and ecological impact, emphasizing that land-based solutions often conflict with planetary boundaries and food security, while technological solutions like DACCS face high energy and cost barriers. The document recommends prioritizing sustainable feedstocks, rights-based approaches for local communities, and the development of standardized monitoring, reporting, and verification (MRV) frameworks.
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Document type: Fact sheet
Container-based sanitation GUIDELINES AND BEST PRACTICES
The guidelines establish standards for container-based sanitation (CBS), a system where toilets collect excreta in sealable containers for transport to treatment facilities. It defines a service chain comprising customer relations, design and operations (containment, collection, and transfer), and the commercialisation of reuse products. The document outlines 'Safe Minimum Standards' and 'Aspirational Standards' across the sanitation chain, including toilet design (in-home vs. standalone), servicing frequency (typically 2-3 times per week), container cleaning, and waste beneficiation into products like animal protein, biochar, and liquid fertiliser. It emphasizes the importance of user engagement, occupational health and safety (OHS) for workers, and the integration of CBS into broader waste management and urban planning, particularly for informal settlements where sewer infrastructure is not feasible.
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Document type: Guide
TRADE AND ENVIRONMENT: EMERGING DYNAMICS FOR NAMIBIA’S SUSTAINABLE DEVELOPMENT
The document outlines the results of the first Rapid Trade and Environment Assessment (RTEA) conducted in Africa, focusing on Namibia. It argues that Namibia should avoid a bulk export industrial model and instead leverage its comparative advantages in high-value niche sectors such as eco-tourism, natural products, and carbon offsets. The brief identifies a need for better inter-sectoral coordination and a national forum to monitor international green labeling and certification standards that could act as technical barriers to trade.
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Document type: Policy brief
Sludge to Energy: An Environment-Energy-Economic Assessment of Methane Capture from Sludge in Xiangyang City, Hubei Province
The World Resources Institute (WRI) evaluated a sludge-to-energy project in Xiangyang City, China, which utilizes high-temperature thermal hydrolysis and anaerobic digestion. The project achieves significant environmental gains, including the recovery of 96% of nitrogen and 99% of phosphorous, and the reduction of greenhouse gas emissions by 95% to 98% compared to landfilling and incineration. Over a 21-year period, the project is expected to produce 45.4 million m3 of natural gas, replacing 60,000 m3 of gasoline and further reducing CO2e emissions by 140,000 metric tons. Economically, the project's success is attributed to a 'government-bank-enterprise' partnership involving the municipal government, KfW Bankengruppe of Germany, and the Export-Import Bank of China, alongside a market-oriented design focusing on the sale of compressed natural gas (CNG) and biochar.
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Document type: Research paper
Technological Carbon Removal in the United States
The paper assesses technological carbon removal options in the United States, specifically bioenergy with carbon capture and storage (BECCS), direct air capture with storage (DACS), and frontier technologies. It argues that while these technologies are critical for stabilizing global temperatures and meeting Paris Agreement targets, their deployment requires significant policy investment in research, development, and infrastructure. The author emphasizes that carbon pricing or regulatory mandates will be essential for sustained large-scale deployment, as CO2 utilization markets alone are insufficient.
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Document type: Research paper