Research profile: Dr. Craig Just


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Dr. Craig Just (right) stands with Senator Senator Bob Dvorsky (left) at this year’s Iowa legislative breakfast, where many researchers from the University of Iowa came to share their work with legislators. (Iowa Senate)

Dr. Craig Just is an assistant professor of Civil and Environmental Engineering at the University of Iowa. Up for tenure this summer, Dr. Just teaches graduate level courses along with an undergraduate principles of environmental engineering course. His research interests range from freshwater mussels’ impacts on the nitrogen cycles in rivers and streams to the fate of explosive chemicals once they are released into the natural environment. Iowa Environmental Focus caught up with Dr. Just to discuss his research on wastewater treatment in smaller communities.

Jenna Ladd: I wanted to focus on your wastewater treatment research in smaller communities. So, why can’t people in smaller communities flush their toilets affordably?

Dr. Craig Just: So, in a town like Iowa City, we just had an over $15 million expansion to our wastewater treatment plant but that cost was spread, you know, among a population base of 75,000 or 80,000 people so the per person cost for such an advance treatment system is under probably a thousand bucks each, give or take, prorate over a certain amount of time. But for smaller towns, who have increasingly rigorous environmental regulations they have to meet, particularly with respect to the discharge of ammonia and bacteria, they’re small so when you have to do a technology upgrade, it’s more expensive per resident and that’s one of the main issues. The other issue is that it also becomes more expensive then to pay an operator for the plant, someone that has the expertise needed to operate an increasingly more sophisticated treatment system. So, then you have to spread that cost amongst a small population base as well and so both of those factors are really scaling issues that, really, small towns have a problem dealing with compared to some other places. Those are some of the main issues going on there.

Jenna Ladd: How were those issues brought to your attention?

Dr. Craig Just: Sometimes it’s with screaming mayors at small town hall meetings. I’ve been going to Des Moines to talk about this issue since at least 2005. Legislators know it’s a problem, their constitutes tell them it’s a problem. In 2010, I was one of the co-leaders of what’s known as the faculty engagement tour. We get faculty who are typically stuffed in their offices and labs and we stuff them in a bus and took them all around Iowa to say, “You know, here are the people that pay your salaries, really, in a way, and let’s be aware.” So, we had a town hall meeting in Goodell, Iowa, town of about 225 people facing a $2.2 million waste water treatment plant upgrade bill and the mayor of that town and the mayor of three or four other towns came to this meeting. Over 100 people showed up to this meeting in all that was left of the school, the old gymnasium. The school’s gone….Everybody came out, it was such a big deal. People were mad, they were shouting. They viewed me as part of the cultural elite who wasn’t doing enough for them in rural Iowa, and that we were putting unrealistic environmental constraints on them that led them to essentially go bankrupt as a town. So I’ve heard it in casual conversation, I’ve heard legislators talk about it, I’ve heard it in town hall meetings. Candidly, at this point it’s hard for me to get away from. I’m from rural Iowa, you know, that’s where I’m from. So I’ve seen it first hand, it’s not hard to see.

JL: Are these newer wastewater treatment regulations or are communities just kind of playing catch up to those regulations that were already in place?

CJ: They’re new, and I would say that they’re based at the federal level. I would say one of the things that’s happening, and it’s a challenge for Iowa in particular, so the population in the U.S. has gone up. I think in just the U.S. alone, we’re up to like 330 million people now, whatever, 50 years ago, I think it was like 200 million or something. I don’t know those numbers, but the point is the overall population density has been going up. Most towns in these watersheds that have a discharge into a stream, most of them have gotten more dense so then you have to have more stringent regulations to not kill the stream. But when you apply those things at the federal level for the National Pollution Discharge Elimination System, it kind of puts a disproportionate burden on the places that haven’t grown. In fact, in rural Iowa, it’s less dense but then you still have to meet these federal standards which are somewhat one-size-fits all and so, I don’t disagree with the fact that the federal standards have become more strict but it’s difficult to apply it in a place that’s population and tax base isn’t growing. It puts rural Iowa at a very special pinch point where those two things converge.

JL: Are there any solutions you’ve come up with for this problem?

CJ: Well, first of all, there are already some alternative technologies, they’re called, that are approved in Iowa that are robust and more affordable, not as affordable as you might like but still more affordable. So, one of the things that we’re doing in partnership with H.R. Green Consulting Engineers, one of our alums there Matt Wildman has really kind of led the use of this technology in Iowa. We’ve partnered with them and the community of Walker, Iowa to extensively test one of these alternative technologies called—it’s a lagoon modification—a submerged attached growth reactor, essentially rocks in a box. A couple lagoons. The lagoons are aerated, they take care of some of the wastewater issues and then it goes to these rocks in a box where the bacteria then are attached to the rocks, they further covert the ammonia with aeration to nitrate, which you can still legally discharge in Iowa—it’s a fertilizer though. It doesn’t solve all of our problems if you look at the broader watershed problems with respect to nutrient discharges, but yet it removes the acute toxicity associated with ammonia discharges. So, that works out well in many regards. It still doesn’t solve all the problems because at least, approximately half the cost of the system is just the pipes that collect the waste from each house and those systems are deteriorating in these towns as well. So, even if we’re improving the system at the end of all those pipes it still kind of tricky to deal with that.

I’m even thinking of almost having your toilet be more like an appliance where you don’t have to convey your waste someplace else. If we could find a way to do that, almost like a compost toilet would work, the composting waste you’d have to collect. The nice thing about that sort of a mentality is you could then use that waste as a resource because there are nutrients in there, there is energy value in that waste. Right now we send it to a lagoon and then one of these box of rocks with bacteria, we treat it but we don’t harvest any of the energy…in fact, we have to put energy in. I think if we could find ways to do that, even in these small towns, then it would make them more sustainable. It would give them extra resources that I think would be valuable. So in the future, I think it would be valuable to maybe not have these lagoons at all. Especially for these towns that are increasingly small, you know, like 600 people or less.

But anyway, so I’m thinking even longer term, but in the short-term, these alternative technologies are better. One of the things that we’ve been able to do then, with all this data collection that’s been going on in Walker since 2013 is now, we can more appropriately size the technology. Since we didn’t have very much data before, we kind of over-sized it in the name of kind of a safety factor. Now with data, we can shrink the size which then makes it cheaper. So that’s where the researcher comes in. As a researcher, I can come in, get this data, say “No, it doesn’t need to be this big” and then work with Iowa Department of Natural Resources to get that approved. That just recently happened. So, now going forward this particular technology can now be about a third smaller, which would have saved Walker, Iowa about $150,000 on a 2.5 million project. That’s real money. 750 people and $150,000 saved, that would be a lot. You multiple that across the nearly 800 or 900 communities these technologies are targeting so that’s a lot of money that Iowans can save. That’s kind of where research and the practical nature of trying to make things affordable come together. Sizing things appropriately so they still work and then making sure the operators still know how to handle any disruptions and understand why things do get disrupted from time to time.

JL: Are you communicating with people working to solve these problems in rural communities in other states?

CJ: In general, Iowa is a little bit behind. Even our peers on our borders: Minnesota would be ahead of us in many regards, some other places too. A lot of these alternative technologies have been utilized in warmer climates. Since they’re biological processes, the bacteria work better when they’re warm, just like you or I do. I don’t move so fast when I’m cold and neither do bacteria. So the challenge for Iowa has been even though some other states have been embracing these alternative technologies more readily, they are easier case studies too. So really, for Iowa, it’s been “How do we manage the cold weather?” that we have and “Will these systems still work when it’s cold?” So, we’ve applied what we can from other states in trying to catch up and now we have to deal with that in our own Iowa circumstance going forward. So yeah, we’ve learned from other places, but we still have to make sure we deal with, you know, Iowa’s situation.

JL: In what ways does this research relate to your teaching?

CJ: Increasingly, developing countries, where again you lack a population base and kind of a resource base and a tax base, some of the challenges are like rural areas in the United States. They’re kind of falling into some of those same categories sometimes so I want our engineers that graduate from our program to understand the rural dilemma. It’s relatively easy to be an engineer when you have all the resources you need, you got money. Yeah, shoot, design away, and it’s fun to kind of do it like that, but when you have to apply your engineering skills and really your community engagement skills at the same time to try to make a difference in a community that’s struggling just to keep their doors open, that’s a cool place. That’s very satisfying and rewarding for an engineer to be operating there. So I’m encouraging our students to do that in some way or another so when they go out into engineering and consulting, they’ll be aware of the issues that small rural communities face in contrast to what growing, urban areas face: fundamentally different engineering problems.

CGRER co-director Dr. Jerry Schnoor comments on U.S. withdrawal from the Paris Climate Agreement


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Jerry Schnoor speaks with Des Moines mayor Frank Cownie at the COP21 climate conference in 2015. (CGRER)
Jenna Ladd | June 2, 2017

President Trump is expected to back out of the Paris Climate Agreement, a 2015 climate accord that committed most of the world’s nations to limiting greenhouse gases. CGRER co-director, Dr. Jerry Schnoor, responded to the White House’s decision in a statement authored on May 31, 2017:

           “President Donald Trump expects to withdraw the U.S. from the Paris Climate Agreement this week. It is a sad time for U.S. leadership in the world. We should remain in the Agreement that we faithfully signed for important environmental, political, and economic reasons.

Climate change is already here – even in Iowa – and it is going to get much worse if we do not reduce our greenhouse gas emissions that are accumulating in the atmosphere and heating the planet. We recognize climate change in the Cedar Rapids flood of 2008, from which we are still recovering, and the (extremely unusual) Cedar River Basin flood of September last year. Temperatures are warmer, especially at night and in the winter. Intense precipitation is more severe and frequent. It is a wetter/warmer Iowa with more humidity in the air and greater runoff in our rivers.

At the global scale, ice is breaking and melting – in the Arctic, Greenland, Antarctica and land-based continental glaciers everywhere. Animals, which depend on the ice for fishing and hunting, like polar bears, are in trouble. Oceans are 30% more acidic than 50 years ago due to carbon dioxide from burning fossil fuels, subsequently bleaching coral reefs and undermining fisheries. More frequent droughts and floods affect agriculture and food supplies. Sea level is rising and already influencing real estate prices and the number of days with “clear sky” flooding in the streets in Miami. Impacts on human health, heat stroke, air quality, pollen, emphysema and asthma, and the migration of mosquitoes and ticks as vectors of disease are especially worrisome.

Politically, the U.S. is losing its credibility in the world as a stable partner whether one speaks of the Paris Climate Agreement, NAFTA, the Trans-Pacific Partnership, or NATO. Once broken, trust is hard to restore. America First means everyone else be damned, and friends can be difficult to find in times of need. Moral and ethical reasons would dictate that the richest country, which dumped more greenhouse gases into the atmosphere than any other nation, should be the first to act. I stood in Paris with representatives from the most vulnerable nations like the Marshall Islands, Kiribati, and the Maldives, who are already losing whole islands to sea level rise and abandoning ancestral homes. I listened in Paris to coastal nations like Bangladesh, Senegal, Mozambique, and the Philippines, embattled by improbable storm surge and increasingly powerful storms. And my heart cries for the children of drought and famine in South Sudan, Somalia, and Ethiopia. These vulnerable countries profited the least from the fossil fuel age, but they suffer the most.

It is not often when 194 countries agree on anything. What makes the Paris Climate Agreement unique is that for the first time, nearly every nation (rich and poor alike) agreed on an equitable “bottom-up” plan to decrease emissions and to fund the most vulnerable nations. It is certainly not a perfect agreement, and it does not go far enough to stem the tide of climate change. More will be needed.

But the U.S. will not be a party to the agreement, and that is a major economic mistake. It is quite possible that China and President Xi Jinping will step into the limelight and lead the world forward. After all, China is already the world’s leading producer of solar photovoltaic panels and wind power. Interestingly, the Chinese written word for “crisis” has two characters. One character means “danger”, and there is certainly danger in the effects of climate change, both now and in the future. The other character stands for “opportunity”. It is the economic opportunity that the U.S. will miss, which China realizes fully. Transitioning from the fossil fuel age represents a great opportunity to create jobs, wealth, and prosperity for our children and for future generations. Iowa has already benefitted tremendously from wind power, turbine manufacturing, and energy efficiency. We stand to profit as well from solar photovoltaics, if we can but understand the crisis of climate change.”

Jerry Schnoor is Professor of Environmental Engineering and Co-Director of the Center for Global and Regional Environmental Research at the University of Iowa. He attended the Paris Climate Convention in December 2015 as an official member of the media.

UI to hold Media Workshop and Forum on post-truth culture this Friday


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Jake Slobe | March 22, 2017

Friday, March 24, 2017
11:30am – 2:00pm
UI Main Library
TILE Classroom 1140

This Friday, POROI (Project on the Rhetoric of Inquiry) will host “A Moment of (Post) Truth: a Media Workshop and Forum.” The event will focus on new challenges that audiences and journalists are facing in a moment when the legitimacy of the press, science and facts themselves are vigorously  opposed. The forum will open up a dynamic space for students, researchers, journalists, faculty, scientists and politicians to reflect together on the stakes of post-factualism in a democracy, along with issues of dissent, authority and authoritarianism.

During the event will be a panel with three speakers from the University of Iowa. First, will be Jiyeon Kang’s speech titled, “Desires Gone Viral: Reading Fake News, Rumors and Internet Bubbles as Political Symptoms.”  Second John S. Nelson will give a presentation titled, “Truth as Common Sense and Fervent Feeling in American Populism, Left and Right.” Lastly will be a presentation by Jerry Schnoor titled, “Climate Change: The Truth and Post-Truth from the Trump Administration, and How the Press Should Report It.”

The event is free and open to the public. Click here to register for the event.

Participants

  • Jeff Charis-Carlson, reporter, Iowa City Press-Citizen
  • Jiyeon Kang, Assistant Professor, Communication Studies, University of Iowa
  • Frank Durham, Associate Professor of Journalism and Director, Masters Program in Strategic Communication, University of Iowa
  • Meenakshi Gigi Durham, Professor of Journalism and Associate Dean of CLAS, University of Iowa
  • John S. Nelson, Professor of Political Science and founder of POROI, University of Iowa
  • Jerald Schnoor, Professor of Civil and Environmental Engineering, University of Iowa

SCHEDULE

11:30 – Interactive Media Workshop
12:15 – Drinks & snacks
12:20 – Panel: Truth & Consequences
1:10 – snacks & drinks
1:15 – Roundtable & Group Discussion
1:50 – Collective Reflections

CGRER co-director delivers UI Presidential Lecture


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Dr. Gregory Carmichael (left) and University of Iowa President Bruce Harreld (right) at the 34th Annual Presidential Lecture on Sunday. (Jake Slobe/CGRER)
Jenna Ladd | February 21, 2017

UI Center for Global and Regional Environmental Research co-director Dr. Gregory Carmichael delivered the 34th Annual Presidential Lecture to a crowded assembly hall at the Levitt Center for University Advancement on Sunday.

The lecture, titled “What Goes Around, Comes Around: The Global Reach of Air Pollution” featured opening remarks from University of Iowa President Bruce Harreld. Quoting Dr. Jerry Schnoor, Carmichael’s co-director at CGRER, President Harreld joked, “Greg is now more traveled than George Clooney’s character in Up in the Air, four million miles and counting.” Carmichael’s extensive research of the long-range transport of air pollution has taken him to many parts of Eastern Asia, South America, Africa and Europe, among other locations.

Carmichael’s lecture was organized into three parts: the global reach of air pollution, the link between climate change and air pollution, and a finally, a discussion about the action necessary to curb air pollution worldwide. The lecturer made a strong case for air pollution research, citing that it is the root cause of 7 million avoidable deaths per year. Carmichael pointed out that air pollution has economic consequences too; each year, it leads to loss of 10 percent of U.S. soybean yields.

The lecture encouraged a sense of urgency when it comes to cleaning up the atmosphere. Carmichael warned, “That molecule that we put in the air today will stay in the air for a long time.” He went on to say that 20 percent of carbon dioxide released into the atmosphere today will remain there for thousands of years. Professor Carmichael’s research focuses primarily on the utilization of comprehensive computer models and big data to simulate the interplay of air pollutants with weather and climate.

His work has been instrumental in understanding the way in which air pollutants from China move across the Pacific Ocean and affect the Western U.S. He said, “Fifteen to twenty percent of clean air policies in the Western U.S. are being offset by Chinese emissions.”

Above all, the Karl Kammermeyer professor of chemical and biochemical engineering emphasized his passion for instructing and advising students. Carmichael has supervised the research of 40 PhD and 35 Masters of Science students at the University of Iowa.

To learn more about Dr. Carmichael’s career, check out episode 5 of CGRER’s EnvIowa podcast.

EnvIowa Podcast: Nitrates in drinking water and their effects on human health


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Pete Weyer discusses some of the health concerns that are associated with elevated nitrate levels in drinking water. (Jenna Ladd)
Jake Slobe | December 15, 2016

On this episode of EnvIowa, we sit down with Pete Weyer, Interim Director of the Center for Health Effects of Environmental Contamination, to discuss his recent research, which looks at nitrates in Iowa drinking water and their effects on human health. A number of studies suggest links between elevated nitrate concentrations in drinking water and other health issues, including birth defects, cancers, thyroid problems and a variety of other health concerns.

The EnvIowa podcast can also be found on iTunes and SoundCloud. For a complete archive of past episodes, click on the EnvIowa Podcast tab at the top of the page.

University of Iowa to hold forum on the water rights tonight in the University Capitol Center


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(Flickr / Peter Esser)
 Jake Slobe | November 30, 2016

Tonight in the University Capitol Center, the University of Iowa will hold a forum discussing the significance of humans having access and rights to water.

University Capitol Centre Rm 1117
Wednesday, November 30 
7:30 PM – 9:00 PM

During this event, the panelists will discuss the fundamental importance of the basic human right to water and it’s implications for human health and well-being. The event aims to engage community members and students in a productive dialogue concerning how these rights and our water resources are being threatened in surprising and worrisome ways domestically and globally. The goal that those in attendance leave feeling informed about the often unconsidered implications of these threats and use their knowledge to stand up for their rights to water and those of others.

The Panelists will include Eric Tate, assistant professor of Geography and Sustainability Studies, and Maureen McCue, an adjunct clinical assistant professor at the University of Iowa Colleges of Public Health and Liberal Arts and Sciences.  She is a founding member, faculty, and former director of the University of Iowa Global Health Studies Program. UI students Kareem Butler and Channon Greer will also be on the panel.

The panel discussion is sponsored by Iowa Chapter  of Physicians for Social Responsibility. Co-sponsors are the UI Global Health Studies Program, the Office of Sustainability,  the UI Center for Human Rights.

NPR science writer Joe Palca to visit University of Iowa


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Jake Slobe| November 16, 2016

The Public Policy Center is hosting NPR science correspondent Joe Palca for a talk, “Reporting on Remarkable Science and Remarkable Scientists.” The talk, which is part of the Creative Matters series, is free and open to all.

Wednesday, November 16
7:00 pm – 8:00 pm

100 Phillips Hall

Joe Palca will discuss creativity, innovation, and the translation of science as part of the Office of Research and Economic Development’s Creative Matters series.

Palca has been a science correspondent for NPR since 1992 where he has covered a range of science topics including everything from biomedical research to astronomy.  He also has his own series, “Joe’s Big Idea,” which explores the minds and motivations of scientists and inventors.

Palca has won numerous awards throughout his career including the National Academies Communications Award, the Science-in-Society Award from the National Association of Science Writers, the American Chemical Society James T. Grady-James H. Stack Award for Interpreting Chemistry for the Public, the American Association for the Advancement of Science Journalism Prize, and the Victor Cohn Prize for Excellence in Medical Writing.

The Creative Matters lecture series seeks to demonstrate that creativity is not only at the core of all research and discovery, but also central to our human experience. The exciting lineup of invited speakers includes artists, thinkers, builders, and doers who challenge conventional thinking about creativity, science, and artistic expression and borrow from a range of influences and disciplines in their work.

The Creative Matters series brings together artists, thinkers, builders and doers who challenge conventional thinking about creativity, science, and artistic expression. The series, which has grown out of the Arts Advancement Committee, has set in motion a campus-wide conversation about the centrality of creativity and discovery to all that we do at the University.

To learn more about the talk, visit ppc.uiowa.edu.