Bye Bye, Bisphenol A

A guest poster at the oil drum throws a little water over cellulosic ethanol (pouring a little water over scotch – good, over raging hype machines, even better).

What’s the moral in all of this? If corn ethanol is marginal on an energy returned on energy invested (EROEI) basis, it is very difficult to argue that biomass grown to make ethanol will be any better. To be blunt, if there are concentrated stocks of waste biomass in place, such as at lumber mills, then biomass ethanol probably makes sense. Otherwise, it appears to be more or less equivalent to corn based ethanol – in other words, a wash.

Overall, it’s a good take down. I am always leery about believing farm/agriculture promises because there’s way too much subsidy money involved for people not to have a vested interest in promoting some new plant or the other. Unfortunately, I know nothing about farming 🙁 , so I can’t judge his assumptions.

Why can’t we just agree to consume less (energy that is, not scotch)

News of possible interest only to me. It seems obvious that oil present in sediment enhances sorption and storage of PCBs than soot/black carbon. After all, it is a liquid phase and is present in higher amounts than black carbon. PCBs are so hydrophobic that almost any organic material has a higher affinity for PCBs than water/sediment. Carbon is a strong PCB adsorbent only for planar PCBs, and then only if it is itself graphitic, hence planar. In all other cases, oil should outcompete  carbon for PCBs. Glad they found experimental evidence. In all my (three) years of analyzing for PCBs, the oily samples are always the highest concentration ones.

Oil Is a Sedimentary Supersorbent for Polychlorinated Biphenyls

Oil Is a Sedimentary Supersorbent for Polychlorinated Biphenyls

Michiel T. O. Jonker and Arjan Barendregt

Institute for Risk Assessment Sciences, Utrecht University, P.O. Box 80176, 3508 TD Utrecht, The Netherlands

Received for review January 18, 2006

Revised manuscript received April 10, 2006

Accepted April 11, 2006

Abstract:

The often-observed enhanced sorption of hydrophobic organic chemicals (HOCs) to sediments is frequently attributed to the presence of soot and soot-like materials. However, sediments may contain other hydrophobic phases, such as weathered oil residues. Previous experiments have shown that these residues can be efficient sorbents for certain PAHs. In this study we investigated sorption of PCBs to sediments contaminated with different concentrations and types of oils, and from that derived oil-water distribution coefficients (Koil). Sorption of PCBs to both fresh and weathered oils was proportional to sorbate hydrophobicity, and no effects of PCB planarity were observed. Furthermore, the experiments demonstrated that different oils sorbed PCBs similarly and extensively (Koil up to 108.3 for PCB 169), and that weathering caused an almost 2-fold increase in sorption of the lower chlorinated PCBs. Koil values indicated that at the PCB equilibrium concentrations tested (pg-ng/L range), for many congeners weathered oil is a stronger sorbent than pure soot and soot-like materials. Due to attenuation of adsorption to the latter materials in sediments (caused by competitive adsorption with organic matter), sedimentary weathered oil will therefore, if present as a separate phase, defeat sedimentary soot, coal, and charcoal as PCB sorbent in most cases. Consequently, weathered oil probably is the ultimate sedimentary sorbent for PCBs and should be included in HOC fate models.

This time, it’s the killer algal bloom, to add to the dying bees and the dying fish.

Algae killing birds, sealife in Calif. – Yahoo News

A bloom of ocean algae that produces a toxic acid has sickened and killed hundreds of birds, sea lions and dolphins in California, environmentalists said.

Birds and animals have been washing up on shores from San Diego to San Francisco Bay.

In the past week, 40 birds have been taken to the International Bird Rescue Center in San Pedro with symptoms of domoic acid poisoning, which attacks the brain and can cause seizures.

In previous seasons, the center might see seven birds a week, director Jay Holcomb said.

“I have been doing this work for 35 years and I have never seen anything like this as far as the number of species affected, other than an oil spill,” Holcomb said Thursday.

Domoic acid is produced by microscopic algae. Birds and sea mammals ingest the acid by eating fish and shellfish who dine on the algae.

The algae population increases or “blooms” every year as the ocean waters warm but this year’s bloom seems early, extensive and “very, very thick,” said David Caron, who teaches in the biological sciences department at University of Southern California.

“In five years of study I have not seen a bloom this large at this particular time of year,” Caron said. “It’s having an extraordinary impact on pelicans and many other species.”

“There are conceivably thousands of animals being affected,” Caron said.

Domoic acid is a naturally occuring toxin from red algae. Increased nutrient loadings into the ocean, and warming ocean temperatures are both linked with an increasing incidence of this toxic “red tide“. It is a naturally occurring phenomenon every year, so it is hard to tease out human inputs and just plain ol’ natural variation. One more thing to keep an eye on, I guess.

Statutory Disclaimer: I don’t actually believe in the rapture – it’s just a cheap rhetorical trick.

Hidden in the beginning of an article on a county heavily dependent on coal contemplating a switch to natural gas heating…

“Heritage should account for something,” said James J. Rhoades, a Republican state senator from Schuylkill County.

King Coal Country Debates a Sacrilege, Gas Heat – NYTimes.com

Of course, this argument can be made to defend any practice including child marriage, the caste system, widow burning, slavery, genocide (the list goes on…). Coal is in august company.

Some of the issues with anthracite:

But what makes this brittle and lustrous rock, often known as black diamond, so hard and pure is that it is often deeper and under greater pressure than other forms of coal, which also explains why it is expensive and dangerous to extract.

The anthracite mines in this area have seen more than 30,000 deaths since 1870.

The argument about local jobs being lost and local economies being damaged is a valid one and needs to be addressed. In theory, destructive practices cannot be continued in order to prop up local economies. But decisions are made locally and it takes a lot of political courage to shutdown a destructive economy and possibly doom a town to fast death. I guess the solution is to provide alternative modes of economy and employment growth during the transition, easier said than done. Problem with being a one horse town, you better hope your horse stays forever young!