Environment Category Archive

Continuity in Renewable Energy

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air

Renewable Energy

Here at Technology Bloggers we are all great fans of renewable energy developments, so I was extremely interested in a project that has just received funding on the Northern Irish coast.

As we all know there are problems with wind and tidal electricity generation, not least due to the weather, lack of wind, sun and sea swell being the obvious thoughts. But developers have an interesting proposal that may work towards alleviating some of these problems.

The idea is to use excess power to compress air and store it in huge caverns underground, to then use it to drive turbines when the wind drops. Sounds like a great idea, but of course there are always pros and contras for these things.

The caverns have to be mined, about 1.5 km below ground, and this will be done using a salt water erosion process. Simply put, a bore is drilled down, water pumped in that will circulate as if in a bottle, erode the surrounding rock salt and be washed out of a drain hole into the sea. The salt solution that comes out with then disperse into the wider sea.

When the cavern is ready, wind turbines will be used to force air into them, which can then be released in a controlled manner to turn turbines on days when you couldn’t dry a handkerchief in the back garden.

Environmental Concerns

So it sounds great, but there are of course those who argue that it is not a good idea. What will the impact be of pumping all of this salt solution into the sea? I think everyone concerned realizes that it will kill wildlife over an area, but how big that area might be, how long it will take to recover and how much damage it will do seems to be under debate.

Some locals suggest that it might lead to an industrial wasteland.

More is explained on this BBC report. Once again a new and possibly extremely positive power development brings the many complexities surrounding renewable energy sources. Issues of responsibility loom large, as do issues of public engagement and risk.

One to follow.

A Drinkable Book

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drinkable book

 

Water Filters in a Book

Dr Teri Dankovich, a researcher at Carnegie Mellon University in Pittsburgh USA has developed and tested a book whose pages can be torn out and used to filter drinking water. Trails are impressive, with the process bringing the water up to US drinking water standards.

The book’s pages contain nanoparticles of silver or copper, which kill bacteria in the water as it passes through. Some of the particles do remain in the water however, but they remain within the legal limits.

Nanomaterials

Now here I have to add my own input to the debate. As readers might know I have written several posts about nanomaterials and it is one of the fields that I work in, and I would question how legal limits are defined.

Nanoparticles are treated like any other particles, and their scale is not taken in account, but this seems to raise some questions. The fact that they are so small means that they can pass easily into the blood stream, so their effects may not be the same as larger particles of the same materials.

So I have to leave an open question mark over the legal issue, but the fact that the water is drinkable is a great advantage. And this leads me to ponder the fact that innovation, and its level of responsibility and ethical justification, must be local. An invention or innovation that brings drinkable water to millions, is portable and cheap and could save many lives, must be seen within its context. Nanoparticles in the water in this situation, may not be same an nano particles found in water because of factory pollution or deliberate addition when other processes might be readily available.

An article on the BBC explains that “All you need to do is tear out a paper, put it in a simple filter holder and pour water into it from rivers, streams, wells etc and out comes clean water – and dead bacteria as well”. And one page can clean up to 100 litres of water. A book could filter one person’s water supply for four years.

The project is looking for funding, so if you are interested and have some money to spare click on the link at the start of the post and pass them over your pocket money.

As a final thought, nanotechnology has come in for criticism from the academic community for its lack of regulation, and rightly so. But it also brings a world of possibilities, many of which like the story above that could transform people’s lives. This is the fine line that interests me in my work, how to make the most of scientific developments at the least environmental and social costs, and for the highest number of people.

Experiences of an Online Conference

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adobe

Online Conference

Last month I attended a conference with a difference, The INSS annual meeting was held in 5 different cities at the same time, as well as online, in an attempt to cut down on travel for participants. I attended the London site and was one of only 2 people to fly to the event. This is remarkable considering that last year we all met in North Carolina and dozens of people flew internal and trans continental legs.

The physical Conference was held at UNC Charlotte in North Carolina, Oregon State university, Arizona State University, Michigan State University and University College London.

Very much an experiment, the practicalities of conducting a conference over several different time zones posed some issues, with early starts for those on the US West Coast and late finishes for those in Europe. The technology worked incredibly well, with very few glitches over the days’ events. Participants were able to ask questions, follow seminars in any of the sites they chose, and interact with the poster and key note presenters using online media.

The event was run out of North Carolina, and the web management was all taken care of from that site. I must say that I was rather skeptical at the beginning, having lived with Skype developments over the years, but how wrong could I be?

Communication Technology

The communication was taken care of using Adobe Connect, so anyone could participate through their own computer or by visiting any of the sites. We in London lost the last 5 minutes of a discussion after one of the lectures, but for the rest it all worked perfectly.

Now as someone who travels to a lot of these kinds of things I can only marvel at the progress made. Each site shared some seminars and papers, but all had different agendas. The London agenda included a day of field trips, as well as as a panel during which presenters discussed their experiences of building the Engineering Exchange, a university lead action group whose aim is to bridge the gap between communities and planners preparing urban regeneration projects. Read the abstract here.

We also toured some of the capital’s largest redevelopment projects, including a visit to Crossrail, a huge rail link and urban regeneration project that cuts through central London. A guided tour of the Elephant and Castle redevelopment area with the interest group “Social Life” followed, a context of urban regeneration that has caused many locals to question both existing and future plans in that area.

The context was also helped by the involvement of a member of a local interest group that aims to support people whose houses are under threat, and promote the idea of refitting houses to maintain communities, rather than rehousing and rebuilding. There is a lot more to think about in urban regeneration that you might imagine.

The Network

The closing panel was hosted in Charlotte and entitled Social Sustainability Initiatives in Planning and engineering Organization. Full details of all the participating site agendas can be found on the INSS website.

The network is open to all interested in participating, so keep an eye on the website for further information. We volunteer our time, we learn a lot, we try to raise social sustainability issues, and we always have a bit of a social at every event. I must say that the multi-site format was a worthy experiment that worked extremely well, and I think could offer a model for future events. Is the era of the online conference coming to life? Looks like it to me.