Stran 9 od 9
Objavljeno: To Jul 25, 2017 3:10 pm
Napisal/-a mravlja
Pri sekancih lahko pride do samovziga.
Objavljeno: Sr Jul 26, 2017 9:41 am
Napisal/-a goIdhorn
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| Pri sekancih lahko pride do samovziga. |
Kolikor je bilo razvidno iz fotografij, so ti sekanci nastali iz odpadnih švelerjev.......
Objavljeno: So Avg 05, 2017 11:52 pm
Napisal/-a figula
Nekaj sem brskala po netu in mi je med prste padla analiza o rastlini s potencialno hiper-akumulacijo kadmija iz zemlje.
http://hywr.kuciv.kyoto-u.ac.jp/lecture/gss/SBabel/E3-20130118PM/DWT_2011.pdf
Raziskane so bile: Guinea grass (Panicum maximum), oranžna kozmeja (Cosmos sulphureus), African marigold (Tagetes erecta L.) in sončnica (Helianthus annuus).
Sklepna ugotovitev na koncu je, da Tagetes erekta zelo obetavna, poleg Guinea trave, ki je uspešnost povečala na račun večje biomase in večjega koreninskega sistema:
Based on the total cadmium accumulation in whole plants and shoots, marigold showed higher potential.
However, due to higher biomass and numerous roots, the total uptake of Cd from the soil by Guinea grass could be maximized. Cadmium accumulation in marigold shoots was > 100 mg kg–1, TF > 1 (Cd treatment of 50 mg kg–1)
and BCF was found to be > 1 for all Cd treatments.
The study shows that Tagetes erecta L. has the basic properties of a hyperaccumulator and possesses a great potential to be raised as an alternative flower crop for phytoremediation.
Although this is a slow process to clean the heavy metal contaminated soil, it has several advantages. This technology is inexpensive, environmental friendly reducing soil erosion, enriching soil organic matter leading to enhance soil fertility and also help in decreasing the Cd contamination of surface and ground water. It also helps in removing the CO2 from the air during the photosynthesis process.
Objavljeno: Ne Avg 06, 2017 12:15 am
Napisal/-a mravlja
Mene pri vsej tej zadevi zanima tudi sledece: kam z rastlinami, ki nam pomagajo v "boju" za cistejse okolje?
Na deponijo? V manjsih kolicinah, na manjsih povrsinah verjetno ja. Kaj storiti v primeru teh "vecjih" nesrec?