SciTech Chronicles. . . . . . . . .Feb 18th, 2025
#Ryugu #salt #precipated #sodium #solar-wind #beryllium-10 #interstellar #heliosphere #LIDAR #Zapotec #Guiengola #Tehuantepec #AI #decode #aphasia #converter #Ba3SiO5 #ruthenium #ammonia #mixed-anion
#Asteroid wiped out #dinosaurs, not a #comet
Analysis of #ruthenium #isotopes showed impactor was a carbonaceous-type asteroid.
Scientists identified likely impact site: large crater in #Chicxulub, #Mexico, first discovered by geophysicists in 1970s. The impactor that created it was sufficiently large (11-8km, or 7-50mi) to melt, shock, and eject granite from deep inside the Earth, probably causing a megatsunami and ejecting vaporized rock and sulfates into the atmosphere
https://arstechnica.com/science/2024/08/scientists-conclude-chicxulub-impactor-was-an-asteroid-from-beyond-jupiter/
From Detailedpedia: Discharge of radioactive water of the Fukushima Daiichi Nuclear Power Plant
Last updated at 2024-08-21
"Discharge to ocean, treated water
Advanced Liquid Processing System (2013–)
"To prevent the reactor meltdowns from worsening, a continuous supply of new water is necessary to cool the melted fuel debris. As of 2013, 400 metric tonnes of water was becoming radioactively contaminated each day. The contaminated water is pumped out and combined into the reactor-cooling loop, which includes strontium–cesium removal (KURION, SURRY) and reverse osmosis desalination processes.
"In October 2012, TEPCO introduced the "Advanced Liquid Processing System" (ALPS, Japanese: 多核種除去設備), which is designed to remove radionuclides other than tritium and carbon-14. ALPS works by first pre-processing the water by iron coprecipitation (removes alpha nuclides and organics) and carbonate coprecipitation (removes alkali earth metals including strontium elements). The water is then passed through 16 absorbent columns to remove nuclides.
"Wastewater is pumped to ALPS along with the concentrated saltwater from desalination. As some tritium still remains, even treated water would require dilution to meet drinkable standards. Although carbon-14 is not removed, the content in pre-treatment water is low enough to meet drinkable standards without dilution.
"Japan's Nuclear Regulation Authority (NRA) approved the design of ALPS in March 2013. ALPS is to be run in three independent units and will be able to purify 250 tons of water per day. Unit "A" started operation in April. In June, unit A was found to be leaking water and shut down. In July, the cause was narrowed down to chloride and hypochlorite corrosion of water tanks; TEPCO responded by adding a rubber layer into the tanks. By August, all systems were shut down awaiting repair. One unit was expected to come online by September, with full recovery planned by the end of 2013.
"By September 2018, TEPCO reports that 20% of the water had been treated to the required level.
"By 2020, the daily buildup of contaminated water was reduced to 170 metric tonnes thanks to groundwater isolation installations. TEPCO reports that 72% of the water in its tanks, some from early trials of ALPS, needed to be #repurified. The portion of ready-to-discharge water raised to 34% by 2021, and to 35% by 2023.
"Some scientists expressed reservations due to potential #bioaccumulation of #ruthenium, #cobalt, #strontium, and #plutonium, which sometimes slip through the ALPS process and were present in 71% of the tanks.
[...]
"Ferenc Dalnoki-Veress, a scientist-in-residence at the Middlebury Institute of International Studies at Monterey, said regarding dilution that bringing in living creatures makes the situation more complex. Robert Richmond, a biologist from the University of Hawaiʻi, told the BBC that the inadequate #radiological and #ecological assessment raises the concern that #Japan would be unable to detect what enters the environment and 'get the genie back in the bottle'. Dalnoki-Veress, Richmond, and three other panelists consulting for the #PacificIslandsForum wrote that #dilution may fail to account for #bioaccumulation and exposure pathways that involve organically-bound tritium (#OBT)."
Read more [includes references]:
https://www.detailedpedia.com/wiki-Discharge_of_radioactive_water_of_the_Fukushima_Daiichi_Nuclear_Power_Plant
The Pelikan's Perch posted: Pelikan’s Wolfram-Iridium Alloy: Subterfuge Or A Forgivable Case Of Genericization https://thepelikansperch.com/2023/09/13/pelikan-wolfram-iridium-nib-tipping/ #FountainPen #Wolfram-Iridium #NibTipping #Reference #Ruthenium #Tungsten #Iridium #Pelikan #Alloy
Japanese environment economist says ALPS-treated #Fukushima radioactive wastewater still contains radionuclides, urging Tokyo to stop dumping plan
By Xu Keyue
Published: Mar 27, 2023
"Kenichi Oshima, professor at Ryukoku University, told the Global Times that the Japanese government and TEPCO should not release the nuclear-contaminated wastewater.
"The Japanese government and TEPCO plan to use ALPS - Advanced Liquid Processing System - to treat the nuclear-contaminated wastewater from the Fukushima nuclear accident and then release the treated water into the ocean. The treated water contains radionuclides including #ruthenium, #strontium-90 and #iodine-129, in addition to #tritium, Oshima noted."
#Fukushima Daiichi Water: The World is Watching… or Should Be
Published on May 6, 2021 by Azby Brown
"In late 2018, however, [#TEPCO] admitted that roughly 80% of the water —890,000 of the 1.1 million tons of treated water then in storage— still contained above-limit levels of #strontium 90, #cobalt 60, #ruthenium 106 and many other #radionuclides that the [ALPS] system had failed to adequately remove. Upon learning that this fact had been intentionally concealed by Tepco, the public was outraged. Those supporting the release plan seem to hope that this massive betrayal of trust has been forgotten."
#NoNukes #FukushimaWater #Fukushima #TEPCOLies #StopTEPCO #OpFukushima #WaterIsLife
Read more:
https://safecast.org/2021/05/fukushima-daiichi-water-the-world-is-watching-or-should-be/
