Major advance in generating electricity from wastewater | KurzweilAI

smarterplanet:

Improved microbial fuel cell (credit: Oregon State University)

Engineers at Oregon State University have made a breakthrough in the performance of microbial fuel cells that can produce electricity directly from wastewater, opening the door to a future in which waste treatment plants not only will power themselves, but will sell excess electricity.

The new technology developed at OSU uses new concepts — reduced anode-cathode spacing, evolved microbes and new separator materials — and can produce more than two kilowatts per cubic meter of liquid reactor volume — 10 to 50 more times the electrical per unit volume than most other approaches using microbial fuel cells, and 100 times more electricity than some.

This technology cleans sewage by a very different approach than the aerobic bacteria used in the past. Bacteria oxidize the organic matter and, in the process, produce electrons that run from the anode to the cathode within the fuel cell, creating an electrical current.

Almost any type of organic waste material can be used to produce electricity — not only wastewater, but also grass straw, animal waste, and byproducts from such operations as the wine, beer or dairy industries.

Major advance in generating electricity from wastewater | KurzweilAI


Minnesota yields best in the corn belt, USDA says, via twincities


Food Prices & Model Simulation, via New England Complex Systems Institute


U.S. Drought Could Cause Global Unrest, via wired


A World Without Water, photoset, via foreignpolicy


Plasma Gasification Raises Hopes of Clean Energy From Garbage

“David Robau tours the country promoting a system that sounds too good to be true: It devours municipal garbage, recycles metals, blasts toxic contaminants and produces electricity and usable byproducts — all with drastic reductions in emissions.”

Plasma Gasification Raises Hopes of Clean Energy From Garbage


A staggering $25 billion in crop insurance claims to be filed by growers across the U.S. due to worst drought in decades

climateadaptation:

This finely written article explains how this year’s record drought affects insurance payouts to farmers for losses. Farmers insurance is subsidized by the Dept. of Agriculture. And the rates are capped, as well. Thus, farmers in the program only pay 40% of their insurance costs. Imagine the government paying 60% of your insurance premium for, say, your car. Socialism indeed.  

Thousands of farmers are filing insurance claims this year after drought and triple-digit temperatures burned up crops across the nation’s Corn Belt, and some experts are predicting record insurance losses — exacerbated by changes that reduced some growers’ premiums.

G.A. “Art” Barnaby, a Kansas State University Extension specialist in risk management, estimates underwriting losses on taxpayer-subsidized crop insurance will hit nearly $15 billion this year. He expects a staggering $25 billion in crop insurance claims to be filed by growers across the nation, driven primarily by one of the worst droughts in the U.S. decades. His loss estimate is based on a loss ratio of $2.50 for every dollar paid in premium.

The U.S. Department of Agriculture’s Risk Management Agency made changes to the insurance program in the past year which are expected to increase the underwriting losses from the drought. The changes meant farmers in some states paid smaller premiums this year for corn and soybeans. Not only that, the agency adjusted yields for those crops upwards to reflect recent trends, Barnaby said.

“Anyone that is concerned about whether this will be sustainable over time will have to ask the question whether this was a good idea to cut rates,” said Barnaby, who 20 years ago helped develop the insurance program. “Now, as a farmer, I like paying a lower rate. But my guess is the rates were not cut that much to be noticeable, but in aggregate they do make a difference.”

The rate reductions were based on the assumption that new technology, such as genetically modified, drought-resistant seeds, would eliminate or reduce big losses, Barnaby said. “So it is ironic they got hit the first year out.”

Under taxpayer-subsidized crop insurance, farmers pay about 40 percent of the premium cost and the federal government picks up the rest. The government sets the rates and the underwriting rules, but the private companies get to pick the contracts they want to take a risk on. Coverage is based on both yield and price. An underwriting loss or gain represents the difference between premiums paid and amount of claims paid.

Read it: Roxana Hegemen of the Associated Press

A staggering $25 billion in crop insurance claims to be filed by growers across the U.S. due to worst drought in decades


Will Water Become the Chief Commodity of the 21st Century?: Scientific American

wildcat2030:

See on Scoop.itThe Future of Water & Waste

The world faces a growing number of challenges surrounding water, from freshwater supply to flooding…

See on scientificamerican.com


The [town-country] rivalry is as false as the idea that an island is limited by water and defined by it, a landsman’s thinking which has no meaning for fishermen whose unending coming and going between the land and the sea breaks down the barriers between the elements to create a necessary unity of two apparently incompatible domains. The rivalry between town and country, which has for so long paralyzed the land, is also, above all, an urban concept.

André Corboz, from The Land as Palimpsest


The Great Flood of 1927