Brennan Jorgensen: Dr. Burns, I have been on a novice quest to design for a solar-powered desalination system coupled to a chloralkali industrial process. I typed up a 40-page rough draft and have not yet completed a final draft. I need to revise the chloro-alkali process per my conversation with Greg Rau. The brine wastewater leftover from desalination is used as a nutrient-rich medium for Arthrospira cyanobacteria (a means for photosynthetic carbon assimilation). After desert brine wastewater lakes evaporate, the goal is to generate convective cloud formations in the low latitude subtopics. The remaining salt fields further deflect incoming solar radiation from the sun much similar to the albedo effect of polar ice caps.
Here is an abstract:
The Reverse Entropy Utility System or REUS is a technologically reliable and economically feasible model for the capture of C02 because it is simply a novel reconfiguration of proven technologies and economic models that have performed successfully for over a quarter of a century. Namely, these technologies are parabolic solar concentrators, multi-effect desalination chambers and chloro-alkali industrial systems in addition to well known agriculture and silvaculture methodologies. The REUS model can arguably be classified as an integrated coastal desert terraforming operation that greatly expands photosynthetic capital with commercially valuable desert agriculture, forestry and algae aquaculture.
The REUS model is also specifically designed to parallel the 50% projected global demand for energy, water and agricultural resources required by an estimated 8 billion people by the year 2030 while greatly lessening market level demands on existing carbon reserves such as tropical forests. On average, a 100-MW REUS model operating at 200,000 MWh/yr will sequester at least 50 million tonnes of C02 primarily through photosynthesis and carbonates after 10 years. This represents an economy of scale average operational efficiency of 40 KWh of solar electricity required to sequester 1 metric ton of C02. Besides C02 being assimilated by sodium hydroxide in order to produce carbonates, most of the photosynthetically assimilated C02 will be turned into commercially valuable products in order to make the system economically viable. The sum total of sequestering 50 million tonnes of C02 into commercially valuable products for a 100-MW REUS model after 10 years of operation would amount to the following biomass figures and 2009 market values; 196,875 tonnes of bamboo (U.s. value $4.9 million), 187,500 tonnes of sugarcane ($1.8 million), 66,823 tonnes of tropical hardwood and fruit tree biomass ($2.0 million) and 18,560,000 tonnes of Arthrospira dry weight algae ($1,856.0 million). Plus the system will generate 27,600,000 tonnes of brine salts after 10 years of operation with a total U.S. market value of $414 million dollars. The solar thermal albedo offset from the REUS models nearly 2-Km2 of parabolic mirrors and total of 50-km2 of intermittent white carbonate and salt flats will also offset the total atmospheric thermal heating effects of 8 million tonnes of C02 in the atmosphere during its ten years of operation. If after 10 years of operation, 27,600,000 tonnes of white brine salts are left in place covering a 50-km2 area at a 30-degree subtropical desert latitude, the yearly thermal albedo effect would be equivalent to removing at least 2.5 million tonnes of C02 from the atmosphere annually. With combined photosynthetic, carbonate and albedo effects, A 100-MW REUS system operating at 200,000 MWh/yr can offset the C02 emissions of twenty 500-MW fossil fuel power plants producing 300,000 tonnes of C02 a year.
On Apr 21, 8:59 am, "Dr. Wil Burns"
FYI. wil
> TITLE: Climatic changes: what if the global increase of CO(2) emissions cannot be kept under control?
> AUTHORS: L A Barreto de Castro
> AFFILIATION: Ministério de Ciência e Technologia, Brasília, DF, Brasil. lbarr...@mct.gov.br
> REFERENCE: Braz J Med Biol Res 2010 Mar 43(3):230-3
> Climatic changes threaten the planet.
Most articles related to the subject present estimates of the disasters expected to occur, but few have proposed ways to deal with the impending menaces. One such threat is the global warming caused by the continuous increase in CO2 emissions leading to rising ocean levels due to the increasing temperatures of the polar regions. This threat is assumed to eventually cause the death of hundreds of millions of people. We propose to desalinize ocean water as a means to reduce the rise of ocean levels and to use this water for populations that need good quality potable water, precisely in the poorest regions of the planet. Technology is available in many countries to provide desalinated water at a justifiable cost considering the lives threatened both in coastal and desertified areas.
Source: Geongineering Google Group
http://groups.google.com/group/geoengineering/msg/907fb60ec1d4f4eb
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