The Interesting World of Solar Panels

WRITTEN BY: John Mulunda, ISTC intern

Can you guess which energy source has had an average annual growth of 59% in the past decade? If you guessed solar energy then you’re right. Solar energy’s sustained annual growth is due to advances in module technology creating competitiveness with other energy technologies, as well as the decline in soft costs for residential and small commercial installations.   

About Solar Panels

Simply put, solar panels are devices that turn the sun’s light into electricity. Each solar panel is made up of multiple cells connected/wired together to create the necessary electrical power needed for the application. Most solar panels on the market today are made from silicon, a semiconducting material. Each cell contains a semiconductor wafer that forms an electric current that is positive on one side and negative on the other. When light energy hits the solar panel, electrons are knocked loose from the atoms in the semiconductor material. If electrical conductors are attached to the positive and negative sides, they form an electrical circuit for electricity to flow to an electrical load such as a light or computer.

Issues

With the large increase in expected solar installations in Illinois and beyond over the next several years, what happens to these panels if they are damaged or when they reach the end of their design-life? While some of them are being repurposed or recycled, many are ending up in landfills. However, landfill disposal may not be the best use of human and natural resources. The International Renewable Energy Agency (IRENA) estimates that by 2050, there will be 60 to 78 million cumulative metric tons of solar panel waste globally. Careful deconstruction of this waste is essential to recover component toxics (cadmium, lead) and valuable metals (silver, iridium, gallium) that otherwise would be landfilled, which prevents possible contamination of water and air systems through leaching and open burning, respectively.

In addition, recyling solar panels allows the opportunity to recover metals, such as silver, aluminum, silicon, and gallium, that would otherwise have to be extracted. In fact, it takes a lot of work to extract gallium because it is not found as a free element in nature. It exists only in trace amounts of various compounds such as zinc or aluminum ores.

Law & Policy – Planning for the Future

There is a bright side to all of this: the value of the recovered materials from solar panel recycling and reuse could be over $15 billion by 2050. Furthermore, many countries have thought about what to do with damaged and or end-of-life solar panels.Some governments have already created laws, while others are in the process of doing so. The European Union (EU) passed a law that requires all producers who sell solar panels in the EU to pay the costs of collecting and recycling panels.

In the U.S., there are no federal laws for solar panel disposal, but the Solar Energy Industries Association (SEIA) is working to establish a national network of certified solar recyclers. Additionally, the State of Washington requires solar manufacturers that sell in Washington to finance the upfront costs of collecting and recycling the panels. The state of New York is in the process of writing a law that will allow the Department of Environmental Conservation (DEC) to work with manufacturers to create a program to help with the collection, transportation, recycling, and disposal of used solar panels. This program would be funded by the manufacturers.

As of 2018, Illinois does not have solar panel recycling regulations. The Illinois Sustainable Technology Center is working with the Illinois EPA, Illinois Solar Energy Association, SEIA, and recycling companies to create a solar panel recycling network. On July 18, 2018, ISTC staff, Nancy Holm and Jennifer Martin, will be at a SWANA Illinois meeting presenting a joint talk about how to make the emerging solar panel market in Illinois more sustainable through recycling.

Advancing carbon capture technology

Research is progressing on a novel biphasic solvent absorption method that holds promise as an innovative, cost-saving alternative to the conventional CO2 capture process in power plants. ISTC researchers have been assisting the Illinois State Geological Survey (ISGS) on a lab-scale (10KWe) project developing a biphasic CO2 absorption process (BiCAP) with multiple stages of liquid-liquid solvent phase separation, which improves CO2 absorption kinetics and increases the carbon capture capacity.

“And, more importantly,” explained Wei Zheng, senior research chemist at ISTC who is working on the project, “this new technology can also significantly reduce both the energy use and equipment cost for CO2 capture compared to the conventional amine-based process.”

The lab-scale research is being led by ISGS, supported by a grant from U.S Department of Energy (DOE).

Currently, the team has evaluated the corrosive properties of solvents on carbon and stainless steel, which are main materials used for CO2 absorbers and strippers. “Corrosion is not a concern,” said ISTC senior research engineer Brajendra Sharma. “We’re moving forward with the project and are on track with all our milestones.”

Now the research efforts are ready for the next step.  Recently U.S. DOE announced $3M of additional funding for ISGS and ISTC to conduct a three-year bench-scale (40KWe) study of their BiCAP technology.

The primary goal of this new project is to leverage the BiCAP process and validate its technical advantages through a fully-integrated bench-scale testing in a relevant flue gas environment. The proposed technology is aimed at achieving a CO2 capture cost of $30/tonne and >95% CO2 purity to meet DOE’s Transformational CO2 Capture goals.

Read more about the biphasic project on ISTC’s website.

Mr. Grinch says ‘demand fast, free shipping at all times’

free two-day shipping
Two-day free shipping is shifting competition toward more speed. But is it the green thing to do?

What a wonderful world when we can shop online and get free two-day shipping.

 

What could be better?

 

From a climate perspective, perhaps slower is better.

 

More than thirty years of engineering have made passenger cars highly efficient and clean burning. That trip to the local store might have a smaller footprint than that uber-delivery to your door. Diesel trucks are lightly regulated and impact air quality more.

 

Experts at the University of California say today’s competition to get it to you fastest is eroding the logistical progress they had made in consolidating their shipments.
Grist explains some of the complexities of shipping that determine the carbon-intensively of your shipping choice. All of those individual shipping boxes have also been implicated for their impacts.

 

MIT’s 2013 analysis concludes that you’ll impact the planet least if you shop completely online, without going to the store to field test your purchase.

 

But now there is the added variable of free two-day shipping? Just because it is free you don’t have to choose it, according to Miguel Jaller, of the Institute for Transportation Studies at the University of California Davis. Consolidate your own purchases and choose a slower delivery option — that gives shippers the best chance of consolidating their shipments. Happy Holidays!

Jobs and growth can help halt greenhouse gas

Experts worldwide are meeting this week in Calabria, Italy to focus on ways to deploy carbon dioxide capture, utilization, and storage (CCUS) technologies.

Kevin OBrien
Kevin OBrien, director of ISTC and interim director of ISWS, at CO2 Summit III in Calabria, Italy.

Today Kevin OBrien, who leads both the Illinois Sustainable Technology Center and the Illinois State Water Survey, spoke about the opportunities to treat “CCUS as a Regional Economic Development Tool.”

The presentation was made at the CO2 Summit III: Pathways to Carbon Capture, Utilization, and Storage Deployment conference.

Reducing CO2 emissions while also maintaining economic growth requires balancing many complex technological, political, and social aspects, according to OBrien.

Deployment will bring significant implications for regional energy, water, and transportation, he said. By focusing on job growth and community resilience, OBrien said, CCUS can draw on, and build on, regional alliances for education, business, and community development.

The Prairie Research Institute, through its Illinois State Geological Survey and ISTC, have become leaders in the development and implementation of carbon capture and storage. ISTC is also developing a Center for Carbon Utilization on the University of Illinois campus.

“The goal is to not only evaluate technologies, but also demonstrate how communities may be able to monetize captured CO2,” said Kevin OBrien. The effort provides a unique opportunity to create jobs and build new markets, he said.

conference participants
CCUS experts from around the world gathered in Calabria, Italy this week to explore ways to speed the implementation of carbon capture, utilization, and storage.

Army to pilot ISTC innovation to improve installation resilience, energy security

waste water treatment plant energy recovery
The U.S. Army will pilot a U of I waste to energy system that converts wastewater biosolids to biocrude oil. The design benefits include removal of many bioactive pollutants and a high efficiency of energy extraction.

 

The U.S. Army has funded a project to demonstrate technology developed on the University of Illinois’ South Farm that disposes of wastewater biosolids by turning them into energy.

 

The Army has embraced a range of innovations in its Net Zero program, which strives for zero waste and clean, on-site, renewable energy sources. Two areas where the Army still pays for landfill disposal are food waste and wastewater biosolids.

 

The U of I system will be demonstrated over a two-month period at Fort Detrick, in Frederick, Maryland, where Net Zero team members will document the effectiveness of this approach to improve the environmental footprint and enhance resiliency at Army installations. Fort Detrick has been designated to be an Army pilot installation for Net Zero energy and waste initiatives.

 

The pilot-scale reactor developed by university personnel from Agricultural and Biological Engineering and the Illinois Sustainable Technology Center (ISTC), a division of the Prairie Research Institute, converts these organic materials into biofuels through a hydrothermal process.

 

Instead of expending energy to sterilize and break down organic wastes for landfilling, the one ton per day reactor can produce 3 million BTUs of heat energy, which corresponds to 300 kilowatt-hours of electricity each day. In addition, instead of expending energy to dry the feedstocks, as in most biofuel processes, wet feedstocks are essential to the reaction.

 

“In a hostile theatre, it is dangerous to supply fuel by truck to run electric generators,” said Lance Schideman, the researcher who has led the development efforts at ISTC. “The ability to supply renewable energy on-post promotes readiness and minimizes its environmental impact,” he added.

 

“The system’s small size and portability also make the approach appealing for deployment at military installations here and abroad,” said Stephen Cosper, an engineer with the Army’s Construction Engineering Research Laboratory who has spent a sabbatical year collaborating with researchers at ISTC.

 

Challenges of Carbon Utilization Have Regional Solutions

istc director kevin o'brien speaks at technology summit in San Antonio Texas
Advances in carbon utilization technology holds diverse options for job and economic development, according to ISTC Director Kevin O’Brien.

Emerging technologies for carbon dioxide (CO2) utilization present significant opportunities for job creation and economic growth, said Kevin O’Brien, director of the Illinois Sustainable Technology Center (ISTC), a division of the Prairie Research Institute at the University of Illinois at Urbana-Champaign, in a presentation to the Eighth Carbon Dioxide Utilization Summit Feb. 22 in San Antonio, Texas.

 

But success in deriving those benefits from carbon utilization depends on the assets (economic and human) of each particular region, O’Brien emphasized to energy, chemical, plastics, and construction industry leaders at the conference.

 

Mature regional partnerships for workforce development, higher education, economic development, government support, and responsive research and development capabilities are some of the factors that contribute to development of a sustainable CO2 value chain.

 

O’Brien pointed to reasons why Illinois, where coal underlies nearly the entire state and remains a $2.5 billion annual industry, is seizing on every advantage it has to align with the potential of carbon utilization innovations.

 

  • Illinois research universities have leading programs in engineering, engineering geology, carbon capture, and other scientific innovation. One example is the use of CO2 as a fertilizer substitute at the University of Illinois. In a major agricultural state with nutrient loss problems and where the climate is expected to reduce carbon retention in soil, synergies abound.
  • College curricula, community colleges, economic development professionals, political leaders, and employers are already connected to existing supply chains.
  • The University of Illinois’ Prairie Research Institute, ISTC’s parent organization, has assembled decades-long reservoirs of valuable data on Illinois weather, regional climate, soil, groundwater, stream flow, and other factors that is relevant to an economic pivot toward carbon utilization.

 

On the research front, a Midwest Regional Approach to Carbon Utilization workshop is being planned for June 28 by co-organizers ISTC, the Gas Technology Institute, and the Advanced Coal and Energy Research Center of Southern Illinois University-Carbondale.

 

Other regions will have different assets and opportunities. For instance, carbon utilization will necessitate pipelines or another cost-effective transportation method for captured CO2. Markets with a track record for facilitating transportation will be ahead of the game, O’Brien said.

Electric Coops Seek Veterans for Skill Positions

Serve our co-op serve our country logoThe National Rural Electric Cooperative Association (NRECA) has job openings and wants America’s veterans to apply.

The organization’s “Serve Our Coops/Serve Our Country” initiative has established a website to tap into the skills of armed forces veterans to join the energy sector.

Across the nation, 750 electric distribution cooperatives anticipate the need for 15,000 workers. They seek various skills for electrical and mechanical engineers; network administrators and specialists, cyber security IT specialists; marketing; accounting and finance; human resources; GIS supervisors and technicians; generation/transmission dispatchers; electric linemen and many others.

The program is focused on supporting member coops with work force education and training and to care for the veteran communities that live in suburban and rural areas.

In Race to Capture Carbon Dioxide, Remember the Need to Use It

Kevin O'Brien at the International Conference on Greenhouse Gas Technologies
ISTC Director Kevin O’Brien spoke in Lausanne, Switzerland today on the importance of developing new uses for ‘waste’ carbon dioxide.

The capture and utilization of CO2 provides a unique opportunity to create jobs and build new markets. Illinois is leading this charge, said ISTC Director Kevin O’Brien today in a presentation at the International Conference on Greenhouse Gas Technologies (GHGT-13) in Lausanne, Switzerland.

 

While research on economical technologies to capture and store CO2 is a priority at the University of Illinois and around the world, it is equally important to develop new approaches to monetize and utilize the gas as a commodity, O’Brien said.

 

He outlined the Carbon Dioxide Utilization and Reduction (COOULR) Center being formed at the University’s Prairie Research Institute. He called this effort a model for other communities committed to creating jobs and accelerating economic engines.

 

The University’s openness to discovery and innovation, coupled with the U of I’s interest in becoming carbon neutral by 2050 makes for a fortunate confluence of factors. “There is a need to be able to explore a multitude of utilization approaches in order to identify a portfolio of potential utilization mechanisms,” he said. “This portfolio must be adapted based on the economy of the region.”

 

The Carbon Dioxide Utilization and Reduction (COOULR) Center being formed at the University's Prairie Research Institute.
The Carbon Dioxide Utilization and Reduction (COOULR) Center being formed at the University’s Prairie Research Institute is intended to be a model for other communities to explore new uses for captured CO2.

A research effort like the COOULR Center “is one of the key steps in the formation of a market for captured CO2,” he added. “The goal of the Center is to not only evaluate technologies, but also demonstrate at a large pilot scale how communities may be able to monetize captured CO2.”

 

The GHGT Conference is held every two years by the International Energy Agency‘s (IEA) Greenhouse Gas R&D Programme. The IEA consists of the U.S. and 28 other industrialized nations that work to ensure reliable, affordable and clean energy supplies.

 

Co-authors of the paper delivered by O’Brien are: Yongqi Lu, Sallie Greenberg, Randall Locke (Illinois State Geological Survey); Vinod Patel (ISTC); Michael Larson (U of I’s Abbott Power Plant); Krish R. Krishnamurthy, Makini Byron, Joseph Naumovitz (Linde LLC); and David S. Guth, Stephen J. Bennett (Affiliated Engineers Inc. (AEI)). The university team and the private partners are currently involved in major research projects to test advanced carbon capture systems at the University’s power plant.

Illinois Governor’s Sustainability Award, Illinois R&D Demonstrate Growing Commitment to Sustainable World

carbon capture and utilization research
ISTC Director Kevin O’Brien discusses new research in carbon capture and utilization at the Illinois Governor’s Sustainability Award event in Chicago Nov. 1.

 

On Friday Nov. 4, the Paris Agreement on climate change became official. The U.S., China, and 53 other nations have ratified the treaty representing half of the world’s carbon emissions.

 

“The politically difficult step was Paris,” said Robert Stavins, an environmental economist at Harvard University was quoted today in The Wall Street Journal. “The technically difficult steps now remain.”

 

While a new administration in Washington could scuttle the U.S. commitment to the international pact, undoubtedly innovation will be essential to decarbonize the atmosphere. Action was evident Nov. 1 at the Illinois Governor’s Sustainability Awards event in Chicago. From towns and neighborhoods to major corporations, the 25 winners for 2016 demonstrated significant ownership of the need to reduce our carbon footprint.

 

Also on Nov. 4, Shell, BP, and eight other oil and gas giants announced an industry collaboration creating a $1 billion investment fund to accelerate carbon capture and storage and energy efficiency over the next 10 years.

 

The Prairie Research Institute and its Illinois Sustainable Technology Center are also working to be impactful on a grand scale. PRI’s effort to outfit the power plant at the University of Illinois with next-generation carbon capture represents a collaboration of multinational corporations with state and university partners. Success could be a game-changer for coal- and gas-fired power plants around the world.

 

Another major research project at ISTC could turn wastewater treatment in America from a cost sink and carbon producer, into a profit center and a carbon sink.

 

“Our approach is to simultaneously work toward sustainable and renewable energy, while taking responsibility for reducing the problems caused by traditional energy sources,” said Kevin C. O’Brien, ISTC director.

 

Green Fans, Mavens and Admirers Can Join Campus Sustainability Celebration

sustainability open house 4 p.m. Oct. 26

Stop by the Alice Campbell Alumni Center 4-6 p.m. Wednesday, Oct. 26 for snacks, prizes and the latest information on sustainability efforts on campus. Awards will be announced at 4:30 p.m. (iSEE‘s Recycling Competition winners, and F&S‘s Energy Conservation Incentive Program awards).

And in Chicago, look for the 30th anniversary winners of the Illinois Governor’s Sustainability Awards on Tuesday Nov. 1 at the Union League Club.

register for the 2016 Illinois Governor's Sustainability Award