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Arsenic in the News

Byoliveridley

Professor wins $1M for arsenic filter – Yahoo! News

The National Academy of Engineering announced Thursday that the 2007 Grainger Challenge Prize for Sustainability would go to Abul Hussam, a chemistry professor at George Mason University in Fairfax. Hussam’s invention is already in use today, preventing serious health problems in residents of the professor’s native Bangladesh.

This British Geological Survey website provides a good primer to the problem. Some key points:

  1. Arsenic is very toxic
  2. Arsenic is naturally occurring in the shallow groundwater aquifers of Bengal and Bangladesh at a toxic level
  3. The surface water is contaminated with bacteria and was responsible for high infant mortality, so aid agencies in the ’70s encouraged the use of tube wells and other groundwater pumps. While this contributed to a decline in infant mortality from gastrointestinal infections, it also dosed unsuspecting people with disease causing levels of arsenic
  4. The technology for removal of arsenic is very well known. But most solutions require electricity/periodic maintenance/technical skills and are thus not universal or sustainable.
  5. Simplicity is the key. You can’t tell the people to not drink the water, it is the only clean water available. You can’t install water treatment plants, there is no running water, you can’t rely on solutions that are centralized.

So with all that in mind, here’s what Prof. Hussam did:

The Gold Award-winning SONO filter is a point-of-use method for removing arsenic from drinking water.  A top bucket is filled with locally available coarse river sand and a composite iron matrix (CIM).  The sand filters coarse particles and imparts mechanical stability, while the CIM removes inorganic arsenic.  The water then flows into a second bucket where it again filters through coarse river sand, then wood charcoal to remove organics, and finally through fine river sand and wet brick chips to remove fine particles and stabilize water flow.  The SONO filter is now manufactured and used in Bangladesh. That’s great, and easy!

That’s pretty much freshman chemistry right there, further proof that most innovation does not need new science, only people willing to spend some time on problems that don’t necessarily get looked at.

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    Fishing Major threat to Turtles

    Byoliveridley

    Well, not the least bit surprising, sea turtles have always been very difficult to track, and we’re finally getting verification that, gasp, turtles’ lives cannot be described in simple juvenile = open sea, adult = coast behavior.

    BBC NEWS | Science/Nature | Fishing ‘major threat’ to turtles

    Until now scientists have believed that young turtles live in the open ocean, but change to a coastal habitat when they reach a certain size.

    But researchers working in Cape Verde found that most adults nesting there retain their open water behaviour, with the attendant risk posed by longline boats.

    “The bottom line is that we thought juveniles experienced this risk out in the open ocean with longline fisheries,” said Brendan Godley from the University of Exeter.

    “We thought that if you got them past that, then unless they’re being taken by inshore fisheries, you’re OK,” he told the BBC News website.

    “But now you’ve got adults exposed to longline fisheries, which is very worrying.”

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    "Eminent Domain" Police Firing Update

    Byoliveridley

    I had written recently about police firing deaths in West Bengal. It appears that there is a lot more to this story than a case of police overreaction.
    BBC NEWS | South Asia | Ten held over India police firing

    But there are suspicions that outsiders may have joined the police force to attack the villagers in Nandigram, protesting against the planned acquisition of farmland for an industrial complex.

    The West Bengal government has now said it is abandoning the project.

    “Outsiders”? That’s informative! Who might these “outsiders” be? More from an Indian source:

    The Central Bureau of Investigation -, probing last Wednesday’s Nandigram deaths in police firing, Saturday recovered a huge cache of arms and ammunition from Khejuri, a base of the Communist Party of India-Marxist -.

    Ten people, presumed to be members of the CPI-M, were arrested by the probe agency during the operation.

    The CPI-M is West Bengal’s ruling party, having been in power for more than thirty years. So the emerging hypothesis is that some “operatives” (read goons) from the ruling party decided to “help” the police clear out the protesting villagers. The tragedy has gone national because the CPI(M) is a supporter of the ruling coalition in India.

    It’s a complex issue, one that I want to learn a lot more about. But the gist of the story is that the ruling Communist party in Bengal is trying to kick start industrial development that has been stagnant for many years. The Haldia Development Authority has been tasked with this rather difficult task, and has been going about its merry business trying to acquire land and setup industrial parks and so called special economic zones.

    The issue here is not the idea, which is sound, but the process, which has been top-down, and designed and implemented with no input from the people who will be affected. Some level of increased industrialization will provide more infrastructure, jobs and money eventually. But the process needed to be planned so that the farmers affected could transition a little more easily from their generations of farm employment. Medinipur, the district where Nandigram is located is predominantly agricultural with 65% of the rural population working as farmers (source Indian Census 2001). There are nearly 6 million people involved in agriculture in this district alone. That’s an arkload of people who will be affected by a major change in the occupational profile, they need to be considered and consulted.

    So when the people affected protested and took the site over, the Chief Minister of West Bengal,  Budhaddeb Bhattacharya, asked the police to clear them out, and I guess they took that literally.

    These protests are spreading, with unrest in Orissa as well. The good news is that there’s been a lot of outcry, and the whole program has been put on hold pending a national policy on acquisition of land for industries. India is not China, people know how to organize, protest and generally make themselves heard. More importantly, the press will cover stories like these (at least for a few weeks, or until India loses to Bangladesh in the Cricket World Cup! – This happened on Saturday!), so development necessarily takes a slower and more tortuous path. That is not always a bad thing. Will they get the process right the next time they do it, I am not sure, but hopefully, these deaths will not have been in vain.

  • Where there’s a Will??

    Byoliveridley

    Let Cooler Heads Prevail

    Read the column, take a deep breath and marvel at the utter dishonesty. George Will is supposedly one of the less extreme conservative columnists out there. But I guess when it comes to this issue, he has no qualms about misleading, setting up strawmen, and actually lying. I don’t think I can add any to the rebuttal from Progress Report…

    On Sunday, conservative pundit George Will used prime space in the Washington Post and other major papers to suggest that not only is global warming not the result of human activity, but that global warming may not exist at all. There is no evidence to support Will’s claim, so he resorted to distortion.

    WILL SUGGESTS GLOBAL WARMING MIGHT NOT EXIST: George Will notes that global temperatures have risen about one degree over the last 100 years, but that “might be the margin of error when measuring the planet’s temperature.” Embarrassingly, the only support Will provides for this statement is a crude analogy. (“To take a person’s temperature, you put a thermometer in an orifice or under an arm. Taking the temperature of our churning planet, with its tectonic plates sliding around over a molten core, involves limited precision.”) There is not a shred of scientific evidence to support Will’s position that the earth is not warming. Science Magazine analyzed 928 peer-reviewed scientific papers on global warming published between 1993 and 2003. Not a single one challenged the scientific consensus that the earth’s temperature is rising due to human activity.

    LIES, DAMN LIES, AND GEORGE WILL’S CITATIONS: The highlight of Will’s column is a list of citations from the 1970s of publications that purportedly warn of “global cooling.” (Nevermind that, even if it were all true, it does not function as an analytic rebuttal to scientific evidence of global warming caused by human activity.) The first such citation is from a December 1976 edition of Science Magazine which warned of “extensive Northern Hemispheric glaciation.” The use of this quote is outrageously dishonest. First, the article in question deals with variations in the earth’s climate based on variations in the earth’s orbit over periods of 20,000 years or longer. Second, the article explicitly excludes the effect of humans on the climate. (The article states its predictions apply “only to the natural component of future climatic trends — and not to such anthropogenic effects as those due to the burning of fossil fuels.) George Will is clearly counting on the fact that most of his readers will not have access to a 1976 edition of Science Magazine.

    And it goes on to rebut every one of his bromides. Read it! Here’s a media issue that Will brings up:

    About the mystery that vexes ABC — Why have Americans been slow to get in lock step concerning global warming? — perhaps the “problem” is not big oil or big coal, both of which have discovered there is big money to be made from tax breaks and other subsidies justified in the name of combating carbon.

    Perhaps the problem is big crusading journalism.

    Perhaps the problem is utter lack of federal leadership on this issue. To use my favorite “If they can put a man on the moon” line of reasoning, Armstrong did not make it to the moon because a bunch of Americans on the street were “quick to get in lock step concerning the Moon program” (ah, to use Will’s own words). It took a coordinated effort on the part of government to establish clear targets, pump in a lot of money, and marshall the scientific resources towards achieving the target. And this was an engineering problem with a specific target and solution. Deal with the complex, only partly characterized beast that is global climate and even an idiot would conclude that no amount of individual awareness, innovation or market effort is going to be sufficient.

    Dealing with climate change requires a lot of effort on the part of a lot of people, it will require individual ingenuity, sacrifice and market forces, but it starts with the will to do it (and the George Will to not stand in the way!), and the will, as has been the case with many projects in the country starts with federal leadership and the injection of the federal dollar.

    If the president stood up every day and beat the drum about climate change at half the intensity with which he talks about “Exporting Democracy”, most people would listen and get in “lock step”. In this respect I guess we live in an idea monarchy! It has everything to do with who’s doing the convincing!

    Update

     http://www.realclimate.org/index.php?p=90

    The folks at RealClimate rebutted this very same comment from Will in December 2004, so this is an old, recycled lie. When will these pundits realize that in this day and age of a million fact checkers and gotcha people, you can’t really get way with this kind of BS. On the other hand, I guess he does not care.

  • Oceans of Carbon Dioxide?

    Byoliveridley

    Well, possibly the biggest climate change science news of the day, sequestration with a twist. Now if we can only get those friendly little carbon dioxide molecules to march down a couple of miles down to the ocean sediments to sequester themselves! But seriously, it will take a lot of pumping.

    Permanent carbon dioxide storage in deep-sea sediments — House et al., 10.1073/pnas.0605318103 — Proceedings of the National Academy of Sciences

    Stabilizing the concentration of atmospheric CO2 may require storing enormous quantities of captured anthropogenic CO2 in near-permanent geologic reservoirs. Because of the subsurface temperature profile of terrestrial storage sites, CO2 stored in these reservoirs is buoyant. As a result, a portion of the injected CO2 can escape if the reservoir is not appropriately sealed. We show that injecting CO2 into deep-sea sediments <3,000-m water depth and a few hundred meters of sediment provides permanent geologic storage even with large geomechanical perturbations. At the high pressures and low temperatures common in deep-sea sediments, CO2 resides in its liquid phase and can be denser than the overlying pore fluid, causing the injected CO2 to be gravitationally stable. Additionally, CO2 hydrate formation will impede the flow of CO2(l) and serve as a second cap on the system. The evolution of the CO2 plume is described qualitatively from the injection to the formation of CO2 hydrates and finally to the dilution of the CO2(aq) solution by diffusion. If calcareous sediments are chosen, then the dissolution of carbonate host rock by the CO2(aq) solution will slightly increase porosity, which may cause large increases in permeability. Karst formation, however, is unlikely because total dissolution is limited to only a few percent of the rock volume. The total CO2 storage capacity within the 200-mile economic zone of the U.S. coastline is enormous, capable of storing thousands of years of current U.S. CO2 emissions.

  • Obama: Warming must be tackled now – Climate Change- msnbc.com

    Byoliveridley

    He wasn’t expected to make an appearance, let alone a splash, but President-elect Barack Obama on Tuesday delivered a videotaped message to a climate change summit convened by California Gov. Arnold Schwarzenegger, vowing quick action to curb emissions and engage in international talks.

    You can be sure that the United States will once again engage vigorously in these negotiations, and help lead the world toward a new era of global cooperation on climate change," he told hundreds of scientists, executives, governors and even foreign officials gathered in Los Angeles.

    via Obama: Warming must be tackled now – Climate Change- msnbc.com

    No longer the climate outcast, is the president of the United States, that proud designation among the so called developed country leaders would now be Steven Harper.