Hudson Valley Next Generation is promoting a bio-gas energy facility to capitalize on local resources and infrastructure while promoting environmental and financial sustainability for our community. This solution also integrates our agriculture, shipping, transportation, energy, and waste sectors and contrasts the traditional "take, make, dispose" mentality.
According to the US Energy Information Association, in 2016, bio-fuels made up a total of 2% of the country’s electricity generation. The US Department of Energy (DOE) is committed to advancing technological solutions to promote and increase the use of clean, abundant, affordable, domestic, and sustainable bio-fuels to diversify our nation's energy sources, reduce greenhouse gas emissions, and reduce our dependence on oil. The Energy Independence and Security Act calls the U.S. to reduce natural gas consumption by 20% over 10 years which equates to approximately 36 billion gallons of bio-fuels by 2022.
Contributes to an eco-friendly, low-carbon future
Mitigates climate change through substitution of fossil fuels
Increases soil carbon content with a deep root system
Cools local surface temperature relative to annual crops
Improves ecosystem services and biodiversity
Can be grown on abandoned and degraded agricultural fields
Prevents and reverts conditions of land degradation
Reduces soil and water pollution
Bio-gas is considered to be a renewable resource because its production-and-use cycle is continuous, and it generates no net carbon dioxide. As the organic material grows, it is converted and used. It then regrows in a continually repeating cycle. From a carbon perspective, as much carbon dioxide is absorbed from the atmosphere in the growth of the primary bio-resource as is released, when the material is ultimately converted to energy.
(Image source: ResearchGate.net)
Bio-gas is produced in a closed system by anaerobic digestion with methanogen or anaerobic organisms. The resulting gases are methane, hydrogen, and carbon monoxide which are cleaned and upgraded to natural gas standards. This bio-methane can be used to create electricity or power motor vehicles.
(Image source: ResearchGate.net)
Biomass sources can come from forestry, agriculture, trade & industry, and aquaculture. These can include residues from wood, crops, plant material, manure, municipal waste, and algae. The Hudson Valley has a vast network of transportation infrastructure and resources to implement a prolific supply of bio-mass material destined for a significant amount of energy generation.
Some bio-fuel crops are carbon neutral or even carbon negative. The amount of carbon sequestrated and the amount of greenhouse gases (GHGs) emitted will determine if the total GHG life cycle cost of a bio-fuel project is positive, neutral or negative. A carbon negative life cycle is possible if the total below-ground carbon accumulation more than compensates for the total life-cycle GHG emissions above ground. In other words, to achieve carbon neutrality, yields should be high and emissions should be low.
On average, every American uses about 60 gallons of water per day for purposes that include food preparation, flushing toilets, bathing and doing laundry. Most of the used water will eventually become wastewater that must be treated before it can be discharged into nature. Treatment uses a lot of energy, and according to the U.S. Environmental Protection Agency, water and wastewater facilities account for more than a third of municipal energy budgets. The residual, semi-solid material that is produced as a by-product during sewage treatment of industrial or municipal wastewater is called sewage sludge, and it can be used as an input into a bio-gas production facility. There are many sewage treatment systems throughout the Hudson Valley which experience maximum or over capacity conditions on a regular basis. In many cases, this inability to properly manage the inflow of sewage results in an excess amount being expelled into the Hudson River. A bio-energy facility offers an opportunity to monetize this material and introduce a process that can return valuable nutrients to our agriculture sector while improving the health of the estuary.
Food waste occurs at the stages of production, retailing, and consuming. Globally, this amounts to between one-third and one-half of all food produced. In low-income countries, most loss occurs during production, while in developed countries, about 220 lbs per person per year is wasted at the consumption stage. This food, destined for land-fills or incineration, could be used as an input fuel source to produce renewable bio-gas for electricity generation. For the Hudson Valley, investments would need to be made in separate collection bins designated for bio-waste. This could start with large corporate institutions like malls and department store complexes. It could also include areas with high densities of restaurants. Collecting individual household waste may not be an economically viable investment at this time and the collection act itself may be an offsetting penalty in consideration of the materials needed to create all of the bins and the transportation. Local collection points may serve as an alternative option which could be implemented at schools to integrate the benefits of proper waste disposal into education.
One crop which demonstrates many attractive qualities as a source of bio-fuel is switchgrass. The US Department of Agriculture and the University of Nebraska have been conducting research on this plant since the mid-1930s. It is a summer perennial grass that is native to North America and has been seeded on millions of hectares of Conservation Reserve Program (CRP) grasslands since 1986. As a valuable soil protection cover crop, it is familiar to many farmers as it binds loose soils and provides valuable wildlife habitat.
Progress has been made in switchgrass breeding and genetics, to promote northeastern establishment, fertility management, production economics, harvest and storage management, and a variety of ecosystem services. To date, net energy and sustainability research fully support the use of switchgrass as a bio-mass energy crop. It can take a few years for the switchgrass to become established to full productivity on a piece of land. Therefore, establishment of a supply network can coincide with the construction of a bio-gas facility.
A great deal of land in New York is suitable for growing switchgrass (Cornell). Cave-in-Rock is an upland variety that is generally recommended as it has been shown to do well in northern climates. Others include Forestburg, Blackwell, Nebraska, Pathfinder, Sunburst, Trailblazer, and Shawnee.
Water chestnut is an aquatic invasive plant that is native to Eurasia and Africa. It was introduced in the United States in the mid-1800's as an ornamental plant. The plant colonizes freshwater lakes and ponds and is found in forty-three counties in New York. There is an opportunity to include this plant as an input to the bio-fuel production process.
The non-native Phragmites australis, or common reed, may also be able to be used an input fuel. It can rapidly form dense stands of stems which crowd out or shade native vegetation in inland and estuary wetland areas and turns rich habitats into mono-cultures devoid of the diversity needed to support a thriving ecosystem.
In this way, the community has an economic incentive to harvest and destroy these plant that destroy aquatic ecosystems and negatively impact water recreation.
The composition of bio-gas varies depending upon the substrate composition as well as the conditions within the anaerobic reactor (temperature, pH, and substrate concentration). Landfill gas typically has methane concentrations around 50%, whereas advanced waste treatment technologies can produce bio-gas with 55%–75% methane. For reactors with free liquids, this can be increased to 80%–90% methane using purification techniques. It can be used as the fuel in the system of producing more bio-gas through co-generation of heat and electricity in a combined heat and power (CHP) plant. Unlike wind and solar, the bio-gas can be quickly accessed on demand.
Fertilizers can be created from the bio-energy production byproduct and supplied to farmers. In effect, this replenishes the soil and avoids the high intensity impact of producing fertilizers elsewhere. Phosphorous resources are becoming more scarce throughout the world and the impact of extracting this crucial mineral from the earth can be very environmentally taxing. By returning this to the farmers, the fertilizer is integrated into a circular economy and thus minimizes the effects of eutrophication from the continuous importation of fertilizer products.
Plants absorb heavy metals that are in our soil. As such, these elements are also present in our municipal solid waste (MSW). There are extraction methods which can be introduced into the bio-gas facility which can recovers ferrous non-ferrous metals, such as steel and aluminum, respectively. As a result, these potentially toxic elements are collected from our environment and can be used for industrial applications.
A fertilized compost byproduct can be used to substitute peat moss that is traditionally used for its water retention qualities. This material serves as a complement to nutrient rich soil in order to allow plants consistent and non-overbearing access to water. Peat-lands are a type of wetlands that cover about 3% of the global land surface. Over millennia, this material builds up and becomes several feet thick. However, these areas are being depleted from over-harvest, agricultural conversion, and drainage. Their destruction leads to ecosystem damage and massive release of stored carbon. Many countries around the world are taking steps to manage and restore peat-lands as well as prohibit the use of peat moss. The Hudson Valley has an opportunity to become a regional supplier of an alternative material that will serve to preserve biodiversity, sustain our wetlands, and provide an additional revenue stream.
The Hudson Valley wants clean, environmentally responsible power generation solutions for our future. We are willing to negotiate construction plans with new and innovative technologies, but the final design must align with our community's interest.
We can implement a green and circular system to build a future alongside Mother Nature.
Hudson Valley Next Generation is focusing its efforts on the production of bio-gas because if refined properly, it can substitute natural gas in a power generator. However, additional fuel production outputs should be explored for the future. Biomass fuels can be also be produced in various solid and liquid forms which include bio-ethanol and bio-diesel. They can be used for transportation services, heat, and electricity. In addition, various byproducts are created throughout this process that can serve as inputs for other sectors in the economic cycle. Production and economic sustainability can be secured in the Hudson Valley with strategic infrastructure choices that are necessary to make in the near future. Establishing long term contract services with local industries and infrastructure offers an opportunity for a closed loop materials cycle which also alleviates the pressures of global price fluctuation in fossil fuels.
Switching to biogas as vehicle fuel can reduce greenhouse gas emissions in the transport sector between 60% and 80% compared to fossil-based fuels like gasoline and diesel. Transport accounts for about 30% of global energy use, making renewable transport crucial for a sustainable energy future. Cost reduction remains the critical challenge. Yet, increasing synergies with other power and transport technologies could further reduce biogas production costs. There are opportunities to integrate this energy source into local supply chains to provide cost efficient fuel for the region. Long-term contracts should be explored with county and state agencies that are looking to update their public transportation vehicle fleets.
NASA has determined that 50% aviation biofuel mixture can cut air pollution caused by air traffic by 50–70%. It is considered by some to be the primary means by which the aviation industry can reduce its carbon footprint. After a multi-year technical review from aircraft makers, engine manufacturers and oil companies, biofuels were approved for commercial use in July 2011. The focus of the industry has now turned to second generation sustainable biofuels (sustainable aviation fuels) that do not compete with food supplies nor are major consumers of prime agricultural land or freshwater. The Hudson Valley region has many airports that could be served with this type of fuel. Long-term contract agreements can be explored with a variety of airline companies to establish an eco-friendly and sustainable fueling option for the future.
The International Energy Agency (IEA) is a Paris-based autonomous intergovernmental organization established within the framework of the Organization for Economic Co-operation and Development (OECD). Over 53% of global primary oil consumption in 2010 was used to meet 94% of the total transport energy demand, with biofuels supplying approximately 2%, electricity 1% and natural gas and other fuels 3%. Bioenergy represents around 10% of the world’s primary energy supply, and in order to reduce dependency on petroleum, the IEA wants biofuels to meet more than a quarter of world demand for transportation fuels by 2050. From 2020 to 2030 global biofuel output has to increase by 10% each year to reach this goal.
In 2014, biomass accounted for over 63% of primary renewable energy production in the EU, placing it at the forefront of renewable energies used in the area ahead of solar, hydro, wind turbines. Most biofuel is sustainably produced from crops grown according to prevailing farming standards in the US, South America and Europe. Biofuels are not the only solution for climate change mitigation, but they are deemed to play an essential role in achieving the world’s mitigation goals.
The Intergovernmental Panel on Climate Change (IPCC) special report on 1.5 Celsius warming says biofuel usage in transport will likely need to increase by a factor of seven if catastrophic climate change is to be averted. As a fundamental principle, climate action taken now is far more important than hypothetical climate action in the future.