• The Environment

    Green Dream: A Solar Power Plant in Your Backyard

    By John B. Carnett Posted on 8.17.2009 27 Comments

    John B. Carnett, PopSci's staff photographer, is using the latest green technology to build his dream home. This is the first entry in his new blog tracking the build--follow along at popsci.com/green-dream No, it's not a death ray. The folks at RawSolar are creating what looks like a very affordable solar thermal tracking dish. This is a mini version of the concentrating solar power systems you see commercially in the 25 kilowatt range.

    7.19.2009 at 04:28am - Comment by TrueGreen

    There is an Israeli firm doing the exact same thing www.zenithsolar.com

  • The Environment

    Florida to Make Gas from Trash

    By Jaya Jiwatram Posted on 11.18.2008 12 Comments

    Trash is a stinky topic. With 130 million tons of it hitting landfills annually, it is the nation's largest human-caused producer of methane gas. And now, residents in Florida's St. Lucie County are turning that stench to gold. Or at least to gas. The county has paired up with Atlanta-based company Geoplasma to implement a plasma gasification plant.

    Article Rating:
    11.23.2008 at 03:47am - Comment by TrueGreen

    Dear Mike Cook, I structured my arguments as objectively as i could attempting to address the issues at hand and respond to those raised. Furthermore, I provided references for those of you to look into the matter further. As your response was essentially an attack i will respond to your points yet refrain from your emotional delivery. The "we" vs. The "I" I specifically stated that it would not be possible to recycle into 32 containers as for the US that would be logistically impossible. However, i did provide the link to a company who is providing incentives the public to recycle through a similar structure compared to airline miles. So, would you recycle more if someone was paying you??? When you say that you dispute the factual validity of issues dear to the heart of people like "me"... I presume you are referring to global warming... which was not the core foundation of this discussion. Furthermore, this thread forum is not the scene to be educating people on global warming. The issue was specific to Municipal Solid Waste so i will remain consistent with the topic. I don't care what car you buy but please look into the facts on your own time. Safe minimum level of air pollution? This statement does not help your argument at all. Fight pollution with dilution! What spacial area of air do you need to dilute an incineration plant with? Furthermore, what about all those individuals in the surrounding area outside of your supposed "dilution area". In the general air circulation there are over a 100 different Polycyclic aromatic hydrocarbons (PAHs) present, all of which either carcinogenic, mutagenic, and /or teratogenic. On this topic, there is a whole new medical branch called Nano Pathology to understand the effects of these neurotoxins and furanes. The studies to date show significant health issues ranging from disfigured babies to young adults under the age of 20 getting brain tumors and thyroid cancer. So, maybe you don't live close to one and simply don't care...i can not argue to that standpoint. Billions are spent in abestos removal as a preventive measure to ensure that no further people get sick from its toxic nature. In NO sense am i making an argument against plastics! Human kind relies significantly on its use and implementation across the diverse range of its demand. All of your examples are thus futile. This is not about medical waste it is about domestic waste. If a company (like that mentioned before) essentially pays (incentives) the individual to recycle plastic, paper/cardboard, aluminum, glass and anything else possible that is great. You don't have to join a program that disrupts your "life-style". But what will be the life style of your children and their children. Mathematics vs. Economics You made one correct statement - we are not going to run out of landfill room at least not in this century. However, as those landfills in use today reach capacity, it is very expensive for the waste mgmt providers to source and permit new locations and even more expensive for them to restructure their vertically integrated value chain to bring the waste to those sites now 100 - 200 miles further from the cities then the last site. Thus, these trucks have to drive much further to do the same thing. I would much rather that landfills are used and methane collection that arises is contained and reprocessed into energy. That is the lessor of the bad. I said in the beginning that i would refrain from emotional delivery but your generalization of the American Dream to include a toxic polluted environment is simply gross misuse of the people's dream. Nonetheless, "dreams" are individual and maybe yours are distorted. I don't understand what your point of the recent elections. If anything, it showed the American dream. More importantly, i think the Obama presidency will provide enormous incentives (in the billions) for energy efficiency and other environmental programs. Always open for discussion Thanks!

  • The Environment

    Florida to Make Gas from Trash

    By Jaya Jiwatram Posted on 11.18.2008 12 Comments

    Trash is a stinky topic. With 130 million tons of it hitting landfills annually, it is the nation's largest human-caused producer of methane gas. And now, residents in Florida's St. Lucie County are turning that stench to gold. Or at least to gas. The county has paired up with Atlanta-based company Geoplasma to implement a plasma gasification plant.

    Article Rating:
    11.20.2008 at 09:38am - Comment by TrueGreen

    Oakspar77777 - Very well articulated discussion thread! You are right that this does qualify as a green technology but not a closed loop non-polluting. My concern maintains consistent with the pragmatist approach where waste stream itself is a huge natural resource for all sorts of materials. Now it is true that currently there are no real full scale technologies (5 tons per hour or higher) cost effective enough to recycle everything in the waste stream. However, look at Japan where consumers have to separate their daily waste into 32 different containers before they are picked up. Now one is suggesting that be case in the US as it will never happen, but some companies are on the right track to either provide a solution or incentive the public (recyclebank.com) 1) Landfill space. Yes - this is not the right strategy but given the economics invovled still the only "cheap" methodology. However, look into the future. These waste mgmt companies have landfills as their liabilities as they have to be maintained 30 yrs after closing for environmental protection and maintenance. This period accounts for 12-15% of the total disposal cost structure which is almost the exact percentage of their profit. So in laymen terms, over the life cycle of the landfill, the waste mgmt player makes approx. the same amount of money as it has to spend to remediate the site after it reaches full capacity. 2) Distance. Agree 3) Methane. Agree that pure methane coming from the landfill should be used rather then released. 4) Electricity now. It is difficult to compare burning trash and decomposition. Firstly, the Incineration companies are not burning the old waste but only the fresh waste from the consumers in order to get the tipping fees. secondly, incineration companies come in and buy out all of the players in their field completely disrupting any and all recycling efforts presented in the regional value chain. They do this because they can not turn the machine off once started requiring a constant flow of garbage and have such high installation and implementation costs (10s of to 100s of millions $) that it is crucial for them to control the local waste stream and in turn their financials. A simple home experiment is burn a piece of plastic and see how it smells. Think about if someone was burning 100s of tons in your back yard. which brings me to my third point. Whether you see it or not, these nano particles produced from incineration are like a new asbestos polluting of neighborhoods with neurotoxins and furanes. Now lets entertain the idea that 10yrs from now stack scrubbers can take out the toxins from the exhaust, all of the hardcore toxins are left in the fly ash which is either used as a replacement to sedimentary layering in the landfills or as filler aggregate in cement. So next time you build something out of concrete see if you are using something with toxic fly ash or bottom ash! My final response is that there is not one single incineration plant that has performed according to the "plan" and all of them dramatically exceed their pollution caps - but hard for municipalities to stop them at this point because so much has already been invested 5) I agree landfills are not the way to go. But using fly ash in any application is simply not environmentally friendly either. Look into any construction development project and you will see that it has not passed any of the standards (ASTM or ISO). The standards require you to grind the materials you use and test the powders. You do not have to be a rocket scientist to imagine what kind of toxins are present in this fly and bottom ash. For those of you interested in this, you can visit youtube and see so many public accounts of incineration facilities sparking publi health issues like brain cancer, TB, and so many other chronic illnesses. We have to reduce our consumption, reuse what we can, and recycle the core materials. Technologies will arise that can handle waste without sorting or burning but in the mean time lets not pollute our finite world further by simply burning our problems away.

  • The Environment

    Florida to Make Gas from Trash

    By Jaya Jiwatram Posted on 11.18.2008 12 Comments

    Trash is a stinky topic. With 130 million tons of it hitting landfills annually, it is the nation's largest human-caused producer of methane gas. And now, residents in Florida's St. Lucie County are turning that stench to gold. Or at least to gas. The county has paired up with Atlanta-based company Geoplasma to implement a plasma gasification plant.

    Article Rating:
    11.19.2008 at 09:24am - Comment by TrueGreen

    After millions of dollars investment in PR these companies are rephrasing their technologies to include more public friendly names like Plasma Arch, Gasification, Pyrolysis etc. They are continuously justifying their technologies as green and producing gas for energy etc. This is all absurd and i am shocked that POPSCI does not include a disclaimer about the issues that are involved. All of these thermal treatment processes are essentially incineration process. So the beginning stage is special but all the stages that follow are identical to combustion. the only difference is that they are igniting the gases from breaking down the waste rather than the waste itself directly. For those of you who are really interested in this please follow the link to see a speech by Paul Connett (SpeedyB - Ottawa def. does not need this process!!!) http://www.youtube.com/watch?v=XB5iOtxlpCs This is part 1 of three scenes and really gives you a detailed insight to the spin we are all being fed. Be Green - TrueGreen



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