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RNG: Zero Scope 1 Emissions and Negative Carbon Intensity -- RNG Recycles Carbon and Reduces Our Dependence on Fossil Natural Gas

by Shashi Menon (EcoEngineers) However, recycling the carbon already in the atmosphere prevents the extraction and combustion of fossilized carbon sources.  Think of an aquifer below the ground that holds water; let’s say you want to limit your dependence on it. You

March 03, 2021 Read Full Article

Campaigns Questioning the Use of Woody Biomass for Energy Are Missing Key Facts Says IEA (International Energy Agency) Bioenergy

(International Energy Agency) There are concurrent media campaigns and publications questioning the use of woody biomass for renewable energy production. Several of them misrepresent on-the-ground forestry practise and bioenergy systems, and associate the use of woody biomass for energy with overexploitation

February 11, 2021 Read Full Article

Clean Energy Inks Multi-Year RNG Supply Contract with LA Metro

by Matthew Mercure (NGT News) Clean Energy Fuels Corp., a provider of clean fuels to the transportation market, says the Los Angeles County Metropolitan Transportation Authority (LA Metro) has signed a new agreement for an estimated 47.5 million gallons of renewable natural gas

February 09, 2021 Read Full Article

Hydrogen Is Hot! 584 Hydrogen Fueling Stations in 33 Countries, Ways2H Expansion, Preem, Siemens and More

by Helena Tavares Kennedy (Biofuels Digest)  ... What is making hydrogen so hot right now is the news that hydrogen fueling stations are having a dramatic acceleration in growth with 584 hydrogen stations deployed in 33 countries by the end

February 01, 2021 Read Full Article

Microsoft Invests in Carbon Removal

by Kelsey Tamborrino (Politico's Morning Energy)  Microsoft — which previously committed to become carbon negative by 2030 — detailed its investments Thursday in carbon removal and capture technologies, including purchasing the removal of 1.3 million metric tons of carbon from

January 29, 2021 Read Full Article

Recording and Highlights from the ARPA-E Web Conference: “Changing What’s Possible for a Sustainable Future”

by Tammy Klein (Transport Energy Strategies)  Thanks to all of you who attended the recent webinar with Dr. David Babson, Program Director, Advanced Research Projects Agency – Energy (ARPA-E).  The title of his talk was “Changing what’s possible for a sustainable future,”

January 21, 2021 Read Full Article

Clean Energy, Total Enter MoU to Expand RNG Infrastructure

by Matthew Mercure (NGT News)  Clean Energy Fuels Corp., a provider of renewable natural gas (RNG) as a transportation fuel in the U.S. and Canada, and Total S.E. have entered a memorandum of understanding (MoU) to create a 50/50 joint

December 22, 2020 Read Full Article

Is RNG a California-Only Fuel?

by Jake Drake (ACT News/Trillium) ... It is true that California continues to make great strides in RNG investment and production. In just the first half of 2020, RNG made up nearly 90% of all natural gas vehicle fuel consumed in

December 03, 2020 Read Full Article

Greenhouse Gases to Carbon Neutrality and Carbon Negativity; an Overview of Popular Emission Terms

by Aytek Yuksel (Cummins) ... This article brings you the basics around some of the common terms associated with air quality and emissions. What are the different greenhouse gases (GHG)? There are four primary greenhouse gases: carbon dioxide (CO2), methane (CH4), nitrous oxide

November 19, 2020 Read Full Article

Plants Rule! Harnessing the Sun for a Negative-Carbon Bio-economy

(Mid-Atlantic Renewable Energy Association) ... Among the Carbon-negative (and climate positive) solutions, those based on photosynthesis are by far the cheapest and most scalable options now, and likely for many decades to come. Properly implemented, these solutions can also provide

October 23, 2020 Read Full Article

Use of Switchgrass Growing in Popularity for Ag Conservation

by Ad Crable (Bay Journal) Will switchgrass, a tall, resilient and fast-growing native plant once familiar to pioneers, become the next cash crop for farmers in states in the Chesapeake Bay drainage?  In a convergence of promising developments, a new study gives

October 23, 2020 Read Full Article

Suburban Propane Partners Acquires Stake in Oberon Fuels

by Michael Bates (NGT News) Suburban Propane Partners LP, a nationwide distributor of propane, fuel oil, and related products and services, says it is purchasing a 39% stake in Oberon Fuels Inc., based in San Diego.  Oberon, a development-stage producer of low-carbon, renewable dimethyl

September 23, 2020 Read Full Article

Plants Rule! Harnessing the Sun for a Negative-Carbon Bio-economy --- September 29, 2020 --- ONLINE

Tom L. Richard, PhD, Penn State professor of Agricultural and Biological Engineering and Director of PSU Institutes of Energy and the Environment shares the importance of biological processes in reaching a Carbon-negative future and what is needed to reverse our

September 12, 2020 Read Full Article

Lignocellulosic Platform Goes Beyond Biofuels: The Digest’s 2020 Multi-Slide Guide to Clariant’s Sunliquid

by Jim Lane (Biofuels Digest) Chemicals, catalysis, additives – At ABLC Digital this July, Clariant shared how they are working on advancing biofuels globally and details on their sunliquid technology to decarbonize transportation. A fully integrated and carbon negative process, sunliquid

September 06, 2020 Read Full Article

Expert Q&A: Negative Emissions & Environmental Assessment Could Help Save the Planet

by Anthony J. Campanella (State University College at Buffalo/Planet Forward)  George Washington University recently hosted a daylong workshop for NGOs on carbon dioxide removal and negative emissions. ... One of the experts presenting at the event, Stanford University senior research scientist

September 04, 2020 Read Full Article

RNG’s Growing Role in Decarbonization Strategies

by Sam Lehr, David Cox and Mike Alaimo (RNG Coalition/Biomass Magazine) Renewable natural gas (RNG) has become an increasingly important part America's push toward clean energy sources and technology.  --  ... Renewable natural gas (RNG) has become an increasingly important part

August 29, 2020 Read Full Article

Celebrating National Aviation Day … and Commenting on How Sustainable Aviation Fuel (SAF) Is Tied to Future Sustainability, and Success, of the Enterprise

by Steve Csonka (Commercial Aviation Alternative Fuel Initiative)  Today is National Aviation Day in the U.S., a recognition instituted by FDR in 1939, honoring the birthday of Orville Wright, but also creating awareness of, and celebrating the progress and vision

August 19, 2020 Read Full Article

Biomethane, the Key to Decarbonize Now the European Mobility

(European Biogas Association/NGV Journal) The European Biogas Association (EBA) is launching a new paper providing a comprehensive analysis on the potential of biomethane for the fast decarbonization of the transport sector and policy recommendations to ensure the further scale-up of this

July 03, 2020 Read Full Article

What is Carbon-Negative Fuel and How Can Fleets Procure It?

by Marc Rowe (ACT News/Trillium) One question we hear often from our customers is how can the use of renewable natural gas as a transportation fuel remove carbon from the atmosphere? This is a hard concept for many to wrap their

July 02, 2020 Read Full Article

Smart Farms of the Future: Making Bioenergy Crops More Environmentally Friendly

by Julie Chao (Joint BioEnergy Institute) Farmers have enough worries – between bad weather, rising costs, and shifting market demands – without having to stress about the carbon footprint of their operations. But now a new set of projects by scientists at

June 22, 2020 Read Full Article

Part 3 – A Third Pathway to Hydrogen: The Digest’s 2020 Multi-Slide Guide to Hydrogen from Biomass and Waste

by Jim Lane (Biofuels Digest)  Ways2H shows us a third pathway towards energy decarbonization via waste to hydrogen. Check out this illuminating slide guide that looks at the need for hydrogen, renewable hydrogen production pathways, how biomass including municipal solid

June 17, 2020 Read Full Article

Smart Farms of the Future: Making Bioenergy Crops More Environmentally Friendly

by Julie Chao (Lawrence Berkeley National Laboratory)  Berkeley Lab launches three new projects to advance sustainable agricultural practices ... The three projects, funded by the U.S. Department of Energy (DOE), leverage Berkeley Lab’s strengths in artificial intelligence, sensors, and ecological biology.

June 03, 2020 Read Full Article

How Much Clean Air Could $100 Million Buy?

by Todd Campbell (California Natural Gas Vehicle Partnership/Advanced Clean Tech News)  ... (L)et’s look at what a hypothetical $100 million government investment could achieve when using one of California’s most popular funding programs. Which option would you chose if both cost

May 08, 2020 Read Full Article

Jet Fuel, Isooctane Gasoline, Ethanol and Isobutanol: The Digest’s 2020 Multi-Slide Guide to Gevo’s Low Carbon Drop-In Transportation Fuels

by Jim Lane (Biofuels Digest)  Gevo’s business strategy is to secure off take agreements for jet fuel and isooctane striking a price that gives attractive returns for project financing for large scale build out of capacity. But how? How will they

May 08, 2020 Read Full Article

There’s More than One Way to Save the Planet! Carbon Capture and Sequestration (CCS) Another New Market for Bioenergy

by Mike Newman (Parhelion Underwriting/Biofuels Digest)  Carbon capture and sequestration (CCS) is an important strategy to reduce greenhouse gas (GHG) emissions and mitigate climate change.  CCS is a process by which large amounts of carbon dioxide (CO2) are captured, compressed, transported, and sequestered.

March 18, 2020 Read Full Article

Biomass Fuels Can Significantly Mitigate Global Warming

(American Associates/Ben-Gurion University of the Negev/EurekAlert!) Biomass fuels derived from various grasses could significantly mitigate global warming by reducing carbon, according to a long-term field study by researchers at Ben-Gurion University of the Negev (BGU) and Michigan State University (MSU). In a

March 10, 2020 Read Full Article

How Can Renewable Natural Gas Provide a Negative Carbon Impact?

by Ashley Duplechien (ACT News/Trillium)  Renewable natural gas is growing rapidly in the transportation fuel industry and decades of research confirms that it is a price-stable, low-carbon—and even carbon-negative—fuel option for fleets.  --  The attention surrounding the benefits of renewable natural

March 09, 2020 Read Full Article

Carbon Capture Initiatives and 45Q

by Cácia Pimentel* (Advanced Biofuels USA) On February 15th the Center on Global Energy Policy (CGEP) Carbon Management Research Initiative and the Women in Energy program hosted a panel of experts to discuss carbon capture policies and technologies, especially Carbon Capture, Utilization

February 18, 2020 Read Full Article

LLNL Report Lays out Technology Pathways for California to Become Carbon-Neutral and Then -Negative by 2045; 3 Pillars of Negative Emissions

(Green Car Congress) Lawrence Livermore National Laboratory (LLNL) scientists have identified a suite of technologies to help California to become carbon-neutral—and ultimately carbon-negative —by 2045. To achieve the goal of carbon-neutrality, California will likely have to remove on the order of 125 million

February 03, 2020 Read Full Article

Cellulosic Biofuel Technology: The Digest’s 2019 Multi-Slide Guide to Mercurius Biorefining

by Jim Lane (Biofuels Digest)  Reaching high is something Mercurius is familiar with, esp. with their REACH technology. Standing for renewable, acid-hydrolysis, condensation, hydrotreating, their REACH technology works at low temperature, low pressure and enzyme free. According to Knud Balslev at

January 02, 2020 Read Full Article

RNG Opportunities and Takeaways: The Digest’s 2019 Multi-Slide Guide to Renewable Natural Gas

by Jim Lane (Biofuels Digest)  What are the current opportunities in renewable natural gas? Mike McCurdy, Managing Director at ICF set out to answer that question at ABLC NEXT in San Francisco. Check out his illuminating presentation on their view

December 26, 2019 Read Full Article

When Negative Is Good – Carbon Negative: The Digest’s 2019 Multi-Slide Guide to Gevo’s Biojet Fuel

by Jim Lane (Biofuels Digest) Noone wants to be negative…unless they are talking about carbon negative of course. The aviation industry has been all abuzz about lowering their carbon footprints for years, then carbon neutral, now carbon negative. According to Gevo’s

December 14, 2019 Read Full Article

Dairy Farm, BMW Partner on Biogas Electricity to Power Cars

(Straus Family Creamery/Biomass Magazine) Straus Family Creamery, a leader in organic farming and sustainable dairy innovation, announces a collaboration between its Founder and CEO Albert Straus’ organic dairy farm and BMW Group. Together, they’re making low carbon charging available for BMW’s

December 04, 2019 Read Full Article

From Waste Woody Biomass to Carbon Negative Transportation Fuels via CCUS

by Philipp Stratmann (Velocys/Biofuels Digest) At this year’s ABLC Next Conference in San Francisco Velocys presented on the opportunity to produce negative emission fuels at our planned Bayou Fuels facility in Natchez, Mississippi. Whilst we were not the only company presenting on

December 03, 2019 Read Full Article

Cemvita Factory Rockin’ It: The Digest’s 2019 Multi-Slide Guide to Cemvita’s CO2 Utilization

by Jim Lane (Biofuels Digest)  Earlier this week we talked about making protein and meat out of air, so taking CO2 and utilizing it seems right in line. C+C Music Factory’s song from the early 90’s “Everybody Dance Now” comes to

November 29, 2019 Read Full Article

BECCS to the Future: The Digest’s 2019 Multi-Slide Guide to ARPA’s Methane Fuel

by Jim Lane (Biofuels Digest) If you missed ABLC NEXT in San Francisco, let’s go back to the future and look at BECCS – Bio-Energy with Carbon Capture and Storage – and examine the challenges, how it is fueled by methane

November 29, 2019 Read Full Article
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(FIT) feed prices Feedstock Flexibility Program for Bioenergy Producers feedstock logistics feedstock material feedstock prices feedstock storage feedstock terminal feedstock transportation Feedstocks fermentation ferry fertilizer fiber Fiji Financing Finland Fischer-Tropsch Synthetic Kerosene with Aromatics (FT-SKA) Fischer-Tropsch Synthetic Paraffinic Kerosene (FT-SPK) Fischer-Tropsch Synthetic Paraffinic Kerosene with Aromatics (FT-SPK/A) Fischer-Tropsch/FT fish feed fish oil fish waste fit for purpose Fixed Base Operator (FBO) flameleaf sumac flavors flax fleet turnover Fleets fleshings flex-fuel vehicles (FFV) flight tests Flightpath flixweed/tansy/herb-Sophia flood-prone soil Florida flue gas FOG (Fats/Oils/Grease) follow-the-crop food Food and Agriculture Organisation (FAO) Food and Drug Administration (FDA) food and fuel food policy food prices food processing waste food safety food security food vs biomaterials/bioplastics food vs fuel food waste for forage forage sorghum forecasts foreign oil Foreign Policy forest Forest Biomass for Energy forest biotechnology forest residue/waste Forest resources Forest Service forestry forklifts Formate formic acid fossil carbon fossil fuel Frace fracking fractionation fragrance France franchise fraud free fatty acids (FFA) Freedom of Information Act (FOIA) freight/cargo French French Guiana fructose fruit FT-SKA fuel fuel additives fuel cell electric vehicle (FCEV) fuel cells fuel economy fuel efficiency fuel injection fuel mixtures fuel molecules fuel oil fuel performance fuel prices Fuel Quality Directive (FQD) fuel registration Fuel Retailers fuel testing fuel transportation fuel use fuel wholesaler fully burdened cost fund funding fungus/fungi Furanics furfural fusel oils Future Farmers of America (FFA) Gabon gallium Gambia games gas prices gas tax/highway user fee gas-to-liquid (GTL) gasification gasoline gasoline baseline gasoline consumption gasoline mandate gasoline markets gasoline price gasoline-range hydrocarbons Gemany General Services Administration general waiver authority generators genetically engineered yeast cells genetically enhanced microbes genetically modified organism (GMO) genome Georgia Georgia (country) geothermal German Germany Gerrmany Ghana GHG (Greenhouse Gas Emissions) GHG (Greenhouse Gas Emissions) Intensity giant cane giant kelp Giant King Grass Giant Reed/Arundo GIS glass tubing gliricidia sepium global rebound effect Global South global warming global warming potential glucose glycerin glycerin standards glycerol goats gorse Governance practices) Government Accountability Office (GAO) government investment government resources government subsidies grain sorghum/milo grain speculators grains GRAND-AM grants grants-local grants-state grapefruit grapes graphene graphite GRAS (generally regarded as safe) Grasses grasses grasshoppers grease Great Green Fleet Great Lakes Greece green bonds green chemistry Green Deal EU green economy green house facility Green Jobs Green New Deal Green Racing Green Recovery green/black economy Greenland GREET Greenhouse Gases Regulated Emissions and Energy Use in Transportation Model Grenada gribble growers gua beans Guam guar Guatemala guayule Guerbet reaction Guinea Guinea Bissau Gulf states gulmohar Gumweed (grindelia squarosa) Guyana GWP gypsum h Haiti Halophytes harvest site processing harvesting Hawai'i hay hazardous waste hazelnut HBIIP Higher Blends Infrastructure Incentive Program HDCJ HDO-SAK (hydro deoxygenated synthetic aromatic kerosene) health health benefits health effects heat of combustion heat of vaporization heat-tolerance heather heating oil/fuel Heavy Duty Truck Rule heavy duty vehicles (HDV) hedging HEFA (Hydro-processed esters and fatty acids) HEFA50 helicopters hemicellulace enzymes hemicellulose hemicellulosic sugars Hemp hemp oil hemp seed herb hexanol HFO (Heavy Residual Fuel Oil) hibiscus high blend renewable fuels (HBRF) High Hydrogen Content Synthetic Paraffinic Kerosene (HHC-SPK) High Octane Fuel (HOF) High Octane Fuel Standard High Octane Gasoline (HOG) high octane low carbon (HOLC) fuel High Octane Vehicles (HOV) high performance regular high school project high sulphur fuel oil (HSFO) high-octane/low-carbon (HOLC) liquid fuels Highway Bill highway rights-of-way Highway Trust Fund history hog farmers hombayniya homogeneous-charge compression-ignition Honduras honey locust Hong Kong Honge tree nuts hops horticulture Housing and Urban Development (HUD) HPF (High Performance Fuels) HRJ (Hydrotreated Renewable Jet) human rights Hungary Hurricane Sandy HVO (Hydrotreated vegetable oil) HVO100 HVO20 HVO30 Hybrid aircraft hybrid buses hybrid locomotive hybrid ships hybrids hydrocarbon fuels Hydrocarbon-Hydroprocesed Esters and Fatty Acids (HC-HEFA-SPK) hydrodeoxygenation hydrodiesel hydrofaction hydroformylation hydrogen aircraft hydrogen carrier hydrogen combustion engines hydrogen fuel cells hydrogen leaks hydrogen pipeline hydrogen price hydrogen pumps/fueling stations hydrogen tax credit hydrogen terminal Hydrogen/Renewable Hydrogen Hydrogen/Renewable Hydrogen Price hydrogenase hydrogenation hydrogenation-derived renewable diesel (HDRD) hydrogenolysis hydropower Hydroprocessed fermented sugars to synthetic isoparaffins (HFS-SIP) hydroprocessing hydropyrolysis hydrothermal carbonization hydrothermal gasification hydrothermal liquefaction (HTL) hydrothermal treatment Hydrotreated renewable diesel (HRD) hydrotreating hydrotreatment hydrous ethanol hypoxia zone Iceland Idaho Illinois Illiois illuppai ILUC (Indirect/Induced Land Use Change) import/export incinerator ash India Indian beech tree Indian grass Indiana indirect effects indirect emissions indirect fuel use change indium Indonesia industrial burners industrial ethanol industrial gases industrial sugars industrial waste industrial waste gases IndyCar infographic Infrastructure inhibitors innovation insecticide/pesticide insects insurance integrated biorefineries integrated food/energy systems intellectual property Inter-American Development Bank inter-crop interactive map intercropping internal combustion engine (ICE) internal combustion engine (ICE)/gasoline engine ban International international balance of payments International Council on Clean Transportation (ICCT) International Energy Agency (IEA) International Maritime Organization (IMO) International Monetary Fund (IMF) International Organization for Standardization (ISO) International Renewable Energy Agency (IRENA) International Sustainability and Carbon Certification model(ISCC) International Trade International Trade Administration International Trade Commission Internships inulin invasive species Investing investment tax credit Invvesting ionic liquids Iowa IPCC Intergovernmental Panel on Climate Change Iran Iraq Ireland iridium iron iron oxide IRS (Internal Revenue Service) IS 1460 ISO 8217 (marine distillate fuel standard) ISO 9000 isobutanol isobutanol price isobutanol pump price isobutene isobutylene isomerisation isooctane isooctene isopropanol Israel Italy Ivory Coast JAA jackfruit Jamaica jamelão Japan jatobá Jatropha Jersey Jerusalem artichoke jet jet A Jet A-1 jet B Jetfuel (Sustainable Aviation Fuel (SAF)) Jimmy Carter Jobs Joint Office of Energy and Transportation jojoba Jordan JP-10 JP-4 JP-5/NATO F-44 JP-8/NATO F-34 juniper Just A MInute Just Transition jute K-12 Education Kabakanjagala kalanchoe kamani Kans grass Kansas Karanja Kazakhstan kelp Kemiri Sunan kenaf Kentucky Kenya kerosene ketones kinggrass Kiribati knotweed Knowledge Discovery Framework Korea Kosovo kudzu kukui nut kulpa kusum Kuwait Kygryzstan labels labor policy Labrador lactic acid lactose Lake County lamp oil land ownership land prices land rights land subsidence land tenure land transfer land use land use change land use policy landfill methane Landfills landscape Laos Latin America Latvia LCFS (Low Carbon Fuel Standard) lead Leadtree leaf ant Lebanon lecithin legislation Legislation-Federal 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microbiology microorganisms/microbes microwave Mid-Atlantic Middle East Midwest mileage military military policy military reserves military specifications military strategic flexibility military strategy military use of biofuels milk permeate millennium fruit millet millettia pinnata milo stover mineralization minerals mining Minn Minnesota miscanthus misfueling missile fuel Mississippi Missouri mixed prarie mobile refinery modeling modular molasses mold molinia molybdenum MON (Motor Octane Number) Monaco Mongolia mongongo monitoring/measuring reporting verifiction (MRV) Montana Montenegro moose morama Moringa tree Morocco morula motorcycles motors MOVES (motor vehicle emissions simulator) modeling system MOVES2014 MOVES3 (MOtor Vehicle Emission Simulator model) Mozambique MSW (Municipal Solid Waste) MTBE (Methyl tert-butyl ether) multi-fuel municipal/city mushroom mushroom substrate mustard seed mvr Myanmar n-butanol n-butene nahar Namibia nano nano particles nanocatalysts 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Nevada New Brunswick new fuel approval New Guinea New Hampshire New Jersey New Mexico New South Wales New York New Zealand Newfoundland Newfoundland and Labrador next generation biofuels next generation vehicles NHRA drag racing Nicaragua nickel Niger Nigeria nipa sap nitrate leaching nitrates nitrogen Nitrogen fertiliser nitrogen starvation nitrous oxide (N2O) Niue NO2 noodles nopal North Africa North America North Carolina North Dakota North Korea Northeast northern catalpa Northern Ireland Northern Territory Northwest Territories Norwary Norway Nova Scotia NOx (nitrogen oxides) noxious weeds nuclear Nunavut nut shells nutraceuticals nutrient credit trading nutrient management nutrients nutrition oak oat hulls oat straw oats Obligated Parties/Point of Obligation (PoO) ocean-based energy Oceania octane octane price/value octanol Office of Energy Efficiency and Renewable Energy Office of Management and Budget (OMB) Office of Science and Technology Policy Office of Science and Technology Policy (OSTP) Office of Science Technology and Policy (OSTP) Offices of Inspector Generals offtake agreements Ohio oil oil embargo oil exploration oil monopoly oil p oil price parity oil prices oil production oil refineries oil replacement oil sands oil seed oil seed crops oil speculators oil spill oil subsidies oil taxes oil/gas terminals Oils Oklahoma olefins oligomerization olive cake olive oil olive pits olive pomace olive water olives Oman Omega-3s on-farm algae production on-farm ammonia production on-farm biodiesel on-farm ethanol production on-farm natural gas production on-farm processing on-site hydrogen production one p one pound waiver onion waste online courses Ontaio Ontario OPEC (Organization of the Petroleum Exporting Countries) open fuel standard open pond opportunity zones optimized flex fuel vehicles orange peel orchard grass orchard prunings Oregon organic solar cells Organization for Economic Cooperation and Development (OECD) osage orange OSHA Overseas Private Investment Corporation overview overview/survey course owa oxygen oxygenate ozone Pakistan Palau palm palm biomass palm fatty acid distillate palm fiber palm fronds palm kernel palm kernel oil palm kernel shell palm oil Palm Oil Methyl Ester (PME) palm oil mill effluent (POME) palm oil prices palm trunk sap palm waste Paludiculture/peatland cultivation Panama pandas panic grass papaya paper Papua Indonesia Papua New Guinea paraffins Paraguay Paris Agreement parity partial waiver particulates pasture land Patent and Trademark Office (PTO) patents pathways Paulownia paulownia tree payments peach shell peaches peak oil peak oil demand peanuts/groundnuts peas pectin peela kaner pellet pellets Pennsylvania pennycress/stinkweed pentane pentanol pentose pequi perennial grains perennial grasses Performance permitting Peru pest-tolerance pesticide-tolerance pests pet food petition petroleum pharmaceuticals phase separation Philippines phosphorus photobioreactor photoelectrocatalysis 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RNG tax credit roadmap rocket fuel Romania RON (Research Octane Number) rosin rotation crops Roundtable on Sustainable Biomaterials (RSB) royalties RP-1 RTP (rapid thermal processing) rubber rubber seeds rumen ruminants rural development Rural Energy for America Program (REAP) Rural Energy Self-Sufficiency Initiative Rural Renewable Energy Pilot Program rushes Russia Russian olive rutabaga Rwanda ry rye Rye grass rye straw s saccharification SAF pipeline SAF10 SAF30 SAF40 SAFc (Sustainable Aviation Fuel certificates) Safer and Affordable Fuel Efficient Vehicles (SAFE) safety safflower sago pond weed SAIC sal tree Salicornia salt water salt-tolerant saltbush saltcedar Samoa Sanctions Santa Monica sardine oil Saskatchewan Saudi Arabia sawdust scale up Scandinavia scholarships/fellowships Science Advisory Board (SAB) Science Based Targets initiative (SBTi) Science Policy scooters Scotland scum sea level rise seaports seashore mallow seawater seaweed cultivation Seaweed/Macroalgae 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