We leave town for a few days and the sky is falling.  Two inches of rain in less than two hours! That sounds unheard of but that is typical for our Monsoon storms here in the Valley and elsewhere in Arizona.  Watching these videos and walking around in the subsequent drizzle last night I could only think of the comments made on James’ previous posts on rainwater harvesting.  There will always be naysayers but seriously folks, just think if we had a plan going into this to harvest all of that water instead of just directing it back to the Salt River, along with all of the trash on the highway.

Even if we just applied rain water collection techniques to the Arizona State University Campus, near where the news video was taken it could make a huge difference. Lets figure out what we could have saved.  If we estimate the ASU main campus to be about a square mile and say the rain is falling at about 2 inches per hour (50.88mm) then in one hour we could have collected ~34 million gallons of water! This sounds completely unbelievable, but according to this USGS page it is true. For information on collecting rainwater from your own property take a look at the Rainwater Harvesting for Drylands website.

Apart from thinking of water use I must admit I had a serious case of schadenfreude watching the youtube video. We have only a few poorly distributed storm sewers here in the desert and little to no culverts diverting water under roadways and this leads to flooding of streets on a predictable yearly basis.  It does not take much water or current to not only stop a car but to carry it off coarse stranding the driver.  The best bet is to not drive in flood waters at all, take a break, wait it out. It is still the desert and things run off and soak up within a relatively short amount of time.  I wasn’t the one waiting in that traffic though so I can see the desire if there is no other way and you’re in a hurry.  Admittedly, I kept hoping we would see them get stuck. I know, I know, it is awful for me to think that but really it takes very little to get your car stuck.  If your engine doesn’t cut off from getting wet it is easy to lose traction. A car only needs an inch or two to become buoyant and then even the slightest current can carry it off the road or into another car where it can be stranded while waters potentially continue to rise.  Hence the Stupid Motorist Law where people have to pay for their own rescue.. think this is atypical? Think again.

Here’s a video of what happens when the freeway floods and traffic is stopped dead in its tracks.
http://www.kpho.com/video/16871937/index.html

Video of a wash during this storm.

The U.S. Department of Energy’s (DOE) Wind program arm just released a report (PDF, 4 MB) on the prospect of wind power generating 20% of U.S. electricity by the year 2030. News agencies have reported on this result, though typically only by reading the official press release. USA Today did do some additional research and their coverage accurately reflects both the intention and the results of the DOE report. In the following discussion I will suggest that you thumb through the report by highlighting a few items I found interesting. If wind power is going to produce such a significant portion of U.S. electricity, then there is a lot of difficult work to do (and don’t get discouraged if it fails).

The report is not a prediction that wind energy will be our savior. It begins by stating that President Bush motivated an improvement in the nation’s energy diversity. Give the DOE credit for taking the Bush Administration’s Energy Agenda and putting some real numbers behind it. Reading through this 248 page report will get you completely up to date in terms of the steps necessary for wind power to generate as much as 20% of all U.S. electricity by the year 2030. It’s not an easy climb, however, so it is important that the public have realistic expectations to avoid becoming disenchanted with wind power if it ends up costing more than this report suggests.

Points of Interest

Read the rest of this entry »

With the price of diesel shooting up by the day this could be a good time to start looking at home-brewing biodiesel. This is a great way to save tons of money on fuel, but it requires a significant investment of your time. For some people it is worth the time to be able to save money and to run a fuel that is more environmentally friendly than regular diesel. Pretty much your only monetary costs will be for parts to make a processor (a lot of which you can find for free), methanol and lye. You’ll also need to make sure you can secure some sources of free waste vegetable oil from local restaurants around you. Without a source of waste oil you are pretty much out of luck.

Does home-brewing biodiesel sound like it is for you? How do you even get started? Well it’s your lucky day because Hans Huth, a Tucson home-brewer, has written a thorough 286 page manual available for free online for just such interests. He writes extensively on making your own biodiesel in Arizona with more information than you ever thought you needed. This book is aimed at making bio specifically in Arizona. The information, however, is relevant to any location, you can just skip the info regarding Arizona laws, etc. Hans starts this free manual by exploring the history of the diesel engine and basic information about what biodiesel is.

Something you’ll find missing from most biodiesel homebrewing manuals is legal considerations. Hans covers these in detail giving information about zoning laws, road taxes, firecodes, waste disposal, etc. He covers these very well and I’d recommend not skipping this if you are serious about brewing your own bio and want to be as legitimate as possible. There are particularly important issues surrounding waste disposal. While biodiesel itself is quite harmless you still need to find a responsible way to dispose of the glycerin and dirty waste water which may contain residual methanol.

From there he goes on to cover other considerations to keep in mind when switching to the use of biodiesel, such as its potential affects on your car. If you have an older diesel vehicle, say from the 80’s, you may run into problems with rubber tubing and seals being eaten away. This is largely irrelevant with newer diesels as the use of rubber was phased out in the early 90s or late 80s. Something to be aware of in newer diesels that have never run on biodiesel is that regular old diesel fuel leaves deposits in your fuel tank and lines that biodiesel will sweep out. Biodiesel has very good cleaning properties and will clean your lines thoroughly and possibly clog your fuel filter. After this initial cleaning of your fuel system you won’t have to worry about clogging up your filters anymore.

Hans also writes in-depth about building a biodiesel processor, collecting oil, filtering oil, and actually brewing the oil into biodiesel. He does this in a very practical and helpful way with pictures that illustrate the whole process. Overall this is the best manual I’ve seen for home-brewing biodiesel. I highly recommend this.

Head over to www.biod101.com and download this book for free and start brewing! If you like it send Hans a donation, Good luck!

Not interested in homebrewing but want to run biodiesel? Check out our map showing where you can buy biodiesel in Arizona. [here]

If you’ve ever looked into buying solar panels or photovoltaics for your house you know how much it cost. It can be anywhere from twenty to thirty thousand dollars for a typical home. What if you could instead lease a solar system for little or no money down? That’s what some companies are doing now and it seems to be catching on. Two I’ve discovered lately that do this are Citizenre and SolarCity. Basically it’s like renting a car, but with much longer leases, you pay very little down to get the system, and you pay them a monthly rent. You are protected from utility price hikes because the cost of the solar doesn’t change and you save money over what you’d be paying without solar panels. You also don’t have to worry about maintenance if anything goes wrong, these companies cover that for you.

One thing I noticed is that neither company seems to mention the generous incentives homeowners get if they buy their own system. According to American Solar Electric’s site a 22,478 dollar system only costs 9,878 dollars after APS/SRP rebates, and Federal and State tax incentives. Depending on the financing you can get this might be the better solution. Of course if anything goes wrong with the system or a much better cheaper form of energy comes out you are stuck with those solar panels and out a lot of money. If like me you live in a location that isn’t served by SRP or APS leasing sounds like it might be a great option to save money and the environment.

I recently sent some questions via email to Casey Brooks (Marketing/Media Relations) over at Arizona Green Dining to learn more about what they do. Arizona Green Dining collects waste vegetable oil from restaurants here in Arizona and their partners Az Biodiesel recycle it into biodiesel. Here’s what he had to say:

Q) What criteria do you use to classify a restaurant as “green”?

The most significant and quickest impact a restaurant can make to the local environment is to have their used fryer oil be recycled into clean burning biodiesel. This is a abundant local renewable resource that can make a significant impact on the air we breath in Arizona. And for the restaurant it is the easiest transition to make the biggest impact on the environment.

Q) How do you use the waste oil you receive?

Our partners Az Biodiesel recycle the waste oil into clean burning low emissions biodiesel fuel to only be sold here in Arizona. For every gallon of biodiesel that Az Biodiesel makes it will take away 16 pounds of co2 emissions out of the skies in Arizona.

Q) What would happen to the waste oil otherwise?

Some of the waste oil that is too polluted to be recycled into biodiesel fuel will be used for feed stock here in Az. But unfortunately most of the used oil is being shipped out of state or even out of the country. Used waste oil is a commodity and some oil collection companies are selling it to other biodiesel manufacturers in other states. Our partners at AZ Biodiesel have committed to use the oil for biodiesel fuel to be only sold here in Arizona. Its a resource that should be utilized here in Arizona and not shipped elsewhere.

Q) What is the benefit to the restaurants, consumers, local economy, environment, and what is the benefit to az green dining?

The benefit to the restaurant is that they can take advantage of the advertising campaign that Az Green Restaurant org. has launched to increase business into these participating locations. People these days tend to favor businesses’ that are doing their part in helping the environment, so the restaurants can also benefit by promoting themselves as a environmentally friendly establishment (that should also increase their business.) The consumers benefit knowing they are actually helping out the local environment by dining at these establishments. And the consumers also benefit from the cleaner air. To the local economy: Creating jobs in biodiesel processing, fuel distribution, equipment maintenance, and many other collateral business’ associated with any industry and this is just the beginning of a new local industry. Glycerin by product is reducing costs at local water treatment plants.
AZ Biodiesel maintains the cleanliness of the restaurants oil collection area and environmentally clean accidental spills and try to use as many “recycled” collection systems (used, high quality, easy pour, fluid visible, barrels) as possible.

Q) Is the biodiesel that is produced from this oil going to be available to the general public?

Absolutely.
From the commercial supply our target market is the school bus system first and foremost. But, we definitely want to make available to all the individuals that want to be environmentally friendly. Its the community effort that will determine the size of the success and our potential to use as much local resources as possible. Its all about the public and I think people would agree on the commercial side that school bus’ first makes sense.

Q) Will any of the biodiesel be shipped out of state?

NO

Q) What is done with the byproducts of biodiesel production?

Currently, the city of mesa uses it (for free) in their water treatment plant to increase the “energy” produced. Glycerin is like a food for the microbes they grow to consume the solid waste. This will save mesa a lot of money, we expect, and we feel is the true “community benefit” that should come from it. We aren’t interested in making every nickel by selling glycerin when the community should benefit as this is really a community effort.

Q) Anything you would like to add?

Please help clean the skies in Arizona but supporting local restaurants that donate their used fryer oil to be recycled into clean burning biodiesel by visiting www.azgreendining.com

WVO Storage Tanks at Az Biodiesel - Biodiesel Mixing tanks at Az Biodiesel

Az Biodiesel should be opening soon, they have already passed ASTM specifications on their biodiesel and are currently waiting for an EPA certificate.

What else can restaurants do to be more stustainable?

• Serve dine-in customers with reusable, washable plates, cutlery, utensils, and glasses.
• Serve take-out customers with biodegradable packaging, cutlery, and utensils. Eco-Products
• Watch their energy usage. I can think of many places where it’s so cold you need a jacket to dine-in.
• Watch their water usage. Don’t unnecessarily waste water.