What’s happened to acid rain?

If we don’t see it in the news, does that mean it has gone away?

02/02/2012


Dear Control Engineering: How come we never read about acid rain in our newspapers anymore? Not even in Minnesota, land of 10,000 tree huggers. Tom D., retired control engineer.

As the graph from the U.S. EPA shows, acid rain reductions are a success story in that the amount has indeed declined for a number of reasons.

As the graph from the U.S. EPA shows, acid rain reductions are a success story in that the amount has indeed declined for a number of reasons. Most relate to coal use, as sulfur content is the primary source. Here are a few specifics:

EPA regulations have worked in that they have driven utilities to install scrubbers and other remediation strategies. The Economist pointed out that 53% of coal-fired generating capacity now has scrubbers.

Utilities are closing older plants. For example, FirstEnergy just shut down a group of old coal burners in Ohio, and there are more on the hit list in other areas. That will raise the proportion of plants with scrubbers.

Coal-fired generation is declining overall. Ten years ago, coal-fired plants accounted for 52% of our electricity. Now that figure is 45%, and predictions suggest that downward trend will continue as natural gas and renewables grow.

As the Economist article notes, there are many more costs related to producing and burning coal than most people realize. There are technologies to mitigate the problems, but these are generally only installed at newer facilities. Getting over the problems will take time, but you may have more trees to hug.

Peter Welander, pwelander(at)cfemedia.com



No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2013 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Leaders Under 40 program features outstanding young people who are making a difference in manufacturing. View the 2013 Leaders here.
The new control room: It's got all the bells and whistles - and alarms, too; Remote maintenance; Specifying VFDs
2014 forecast issue: To serve and to manufacture - Veterans will bring skill and discipline to the plant floor if we can find a way to get them there.
2013 Top Plant: Lincoln Electric Company, Cleveland, Ohio
Case Study Database

Case Study Database

Get more exposure for your case study by uploading it to the Plant Engineering case study database, where end-users can identify relevant solutions and explore what the experts are doing to effectively implement a variety of technology and productivity related projects.

These case studies provide examples of how knowledgeable solution providers have used technology, processes and people to create effective and successful implementations in real-world situations. Case studies can be completed by filling out a simple online form where you can outline the project title, abstract, and full story in 1500 words or less; upload photos, videos and a logo.

Click here to visit the Case Study Database and upload your case study.

Bring focus to PLC programming: 5 things to avoid in putting your system together; Managing the DCS upgrade; PLM upgrade: a step-by-step approach
Balancing the bagging triangle; PID tuning improves process efficiency; Standardizing control room HMIs
Commissioning electrical systems in mission critical facilities; Anticipating the Smart Grid; Mitigating arc flash hazards in medium-voltage switchgear; Comparing generator sizing software

Annual Salary Survey

Participate in the 2013 Salary Survey

In a year when manufacturing continued to lead the economic rebound, it makes sense that plant manager bonuses rebounded. Plant Engineering’s annual Salary Survey shows both wages and bonuses rose in 2012 after a retreat the year before.

Average salary across all job titles for plant floor management rose 3.5% to $95,446, and bonus compensation jumped to $15,162, a 4.2% increase from the 2010 level and double the 2011 total, which showed a sharp drop in bonus.

2012 Salary Survey Analysis

2012 Salary Survey Results

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.