| Biochar (51) |  |
#Iron-rich biochar filters arsenic from water Biochar may be a fast inexpensive and easy way to remove arsenicâ one of the world s most common pollutantsâ from water.
Because biochar can be produced from various waste biomass including agricultural residues this new technology provides an alternative
The resulting biochar which has the consistency of ground coffee was treated then with a saltwater bath to impregnate it with iron.
Plain biochar does not have the same effect Gao says. Current methods to remove arsenic include precipitation adding lime
Water treatment plants could use large biochar filters to extract the arsenic. Homeowners could use a small filter attached to their tap.
#Iron-rich biochar filters arsenic from water Biochar may be a fast inexpensive and easy way to remove arsenic one of the world s most common pollutants from water.
and has been shown to cause cancer. ecause biochar can be produced from various waste biomass including agricultural residues this new technology provides an alternative and cost-effective way for arsenic removalsays Bin Gao associate professor of agricultural
The resulting biochar which has the consistency of ground coffee was treated then with a saltwater bath to impregnate it with iron.
Plain biochar does not have the same effect Gao says. Current methods to remove arsenic include precipitation adding lime
Water treatment plants could use large biochar filters to extract the arsenic. Homeowners could use a small filter attached to their tap.
#Biochar changes how water flows through soil Rice university rightoriginal Studyposted by Jade Boyd-Rice on September 25 2014new research could help settle the debate about one of biochar s biggest benefits#its seemingly contradictory ability
or biochar to soil to both boost crop yields and counter global climate change the study offers the first detailed explanation for this mystery. nderstanding the controls on water movement through biochar-amended soils is critical
to explaining other frequently reported benefits of biochar such as nutrient retention carbon sequestration and reduced greenhouse gas emissionssays lead author Rebecca Barnes an assistant professor of environmental science at Colorado College who began the research as a postdoctoral research associate at Rice university.
Biochar can be produced from waste wood manure or leaves and its popularity among DIY types
and gardening buffs took off after archaeological studies found that biochar added to soils in the Amazon more than 1000 years ago was still improving the water-and nutrient-holding abilities of those poor soils today.
Studies over the past decade have found that biochar soil amendments can either increase or decrease the amount of water that soil holds
In the new study biogeochemists at Rice conducted side-by-side tests of the water-holding ability of three soil types#sand clay and topsoil#both with and without added biochar.
The biochar used in the experiments derived from Texas mesquite wood was prepared to exacting standards in the lab of Rice geochemist Caroline Masiello a study coauthor to ensure comparable results across soil types. ot all biochar
is created equal and one of the important lessons of recent studies is that the hydrological properties of biochar can vary widely depending on the temperature
and time in the reactormasiello says. t s important to use the right recipe for the biochar that you want to make
When biochar is added to clay it makes the soil less dense and it increases hydraulic conductivity
which makes intuitive sense. dding biochar to sand also makes it less dense so one would expect that soil to drain more quickly as well;
but in fact researchers have found that biochar-amended sand holds water longer. tudy coauthor Brandon Dugan assistant professor of Earth science at Rice says e hypothesize that this is likely due to the presence of two flow paths
for water through soil-biochar mixtures. One pathway is between the soil and biochar grains
and a second pathway is water moving through the biochar itself. arnes says the highly porous structure of biochar makes each of these pathways more tortuous than the pathway that water would take through sand alone.
Moreover the surface chemistry of biochar#both on external surfaces and inside pores#is likely to promote absorption
and further slow the movement of water. y adding our results to the growing body of literature we show that
when biochar is added to sand or other coarse-grained soils there is a simultaneous decrease in bulk density
if biochar a byproduct of the a process that converts plants materials into biofuel could be used in place of expensive activated carbon to make electrodes for supercapacitors.
and the biochar nanoparticles can create an extremely large surface area which can then hold more charge.
He deposits the biochar on a substrate using a patent-pending electrochemical process he developed
Through this project Fan developed a faster way of treating the biochar particles using a new technology called plasma activation.
The plasma treatment activates the biochar in five minutes and at room temperature Fan explained. Conventional chemical activation takes several hours to complete
The technique that treats biochar electrodes for supercapacitors can also be used in making displays explained Fan who was a research scientist at Wintek more than 10 years ago.
#Biochar from manure waste enhances soils Researchers at Universidad Politécnica de Madrid have obtained biochar using manure waste,
Biochar, a material obtained after thermal treatment of this waste through pyrolysis, is an organic fertilizer that applied in soils
It is highlighted the thermal treatment through pyrolysis for large scale production of biochar or biocarbon that can be defined as a carbonaceous material obtained through thermal treatment of biomass at low temperatures and under inert atmosphere.
and Mining engineering and Agricultural production of UPM shows that the biochar produced from manure of cattle,
These results give evidence of the positive effects of using biochar as a fertilizer on soils for better crop yields.
and create biochar a highly porous charcoal said project principal investigator Karl Linden professor of environmental engineering.
The biochar has a one-two punch in that it can be used to both increase crop yields
Biochar is a valuable material said Linden. It has good water holding capacity and it can be used in agricultural areas to hold in nutrients
A soil mixture containing 10 percent biochar can hold up to 50 percent more water and increase the availability of plant nutrients he said.
Additionally the biochar can be burned as charcoal and provides energy comparable to that of commercial charcoal.
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