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Wyszukujesz frazę "phytoremediation" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Concentration of heavy metals in the soil and translocation with phytoremediation potential by plant species in military shooting range
Autorzy:
Magaji, Y.
Ajibade, G. A.
Yilwa, V. M. Y.
Appah, J.
Haroun, A. A.
Alhaji, I.
Namadi, M. M.
Sodimu, A. I.
Powiązania:
https://bibliotekanauki.pl/articles/1157708.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Heavy metals
Physicochemical parameters
Phytoremediation
Translocation
Opis:
Concentration of seven (7) metals (Pb, Cu, Zn, Mu, Ni, Cr, and Cd) in the samples of soil and some plant species collected from Kachia military shooting range were determined. The mineral ions were assayed using the acid digestion method and atomic absorption spectrophotometry (AAS). Physicochemical parameters (pH, EC, Bulk density, water holding capacity and Total Nitrogen) of the soil samples were also determined. Of the 7 metals determined in the soils samples, the concentration of Pb (14.85 ± 6.78 mg/kg-1) was the highest compared to the concentrations of other metals. Physicochemical parameters were within the range that allows effective phytoremediation. Cu showed the lowest concentration (0.55 ± 1.68 mg/kg-1). Ni was below the detectable limit in most of the samples. Similarly, concentrations of Pb (12.30 mg/kg-1) in the shoot of Albizia zygia among other metals were higher than those of the other metals in the plant tissues. Concentration of Cd (0.07 mg/kg-1) in the root of Eragotis tremula was the lowest. Generally, metal ion concentration in the soil and plant samples of the shooting range (polluted site) significantly) differed from those of the non-polluted site (P<0.05). Combretum hispidium among the plant species had the highest translocation factor (TF = 2.91). Although the TF was higher in the plant of the polluted site TF >1), reasonable amount of them were retained within the underground tissues (roots).
Źródło:
World Scientific News; 2018, 92, 2; 260-271
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Environmental, economic and health perspectives of arsenic toxicity in Bengal Delta
Autorzy:
Bhattacharya, Sayan
Ghosh, Uday Chand
Powiązania:
https://bibliotekanauki.pl/articles/1194026.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Arsenic
Bengal Delta
Bioaccumulation Groundwater
Phytoremediation
Toxicity
Opis:
Arsenic is a metalloid of great environmental concern because of its highly toxic nature and wide abundance. Arsenic contamination in groundwater has been reported in Bangladesh, India, China, Taiwan, Vietnam, USA, Argentina, Chile and Mexico. The clinical symptoms of arsenic toxicity in human body include skin itching to sun rays, burning and watering of the eyes, weight loss, loss of appetite, weakness, fatigue, limited physical activities and working capacities, chronic respiratory problems, moderate to severe anemia etc. The Bengal basin is regarded to be the most acutely arsenic infested geological province in the world. Heavy withdrawal of groundwater for fulfilling the needs of the increasing population in Bengal Basin resulted in increased arsenic level in the groundwater. Mobilization of arsenic in Bengal delta is further interfered by microbial activities and interactions. Different microbial strains have been isolated from Bengal Delta which can tolerate, transform and resist arsenic. The use of arsenic contaminated groundwater for irrigation purpose in crop fields elevates arsenic concentration in surface soil and in the plants grown in these areas. Several plant species have been studied for their ability to accumulate arsenic in the Bengal Delta. Rice is generally grown in submerged flooded condition, where arsenic bioavailability is high in soil. As arsenic species are very much toxic to plants and can execute oxidative stresses, they can also affect the overall production of rice and other vegetables, and can affect the agricultural and economic development of Bengal Basin. Cattle population also consume arsenic infested water in those areas and usually eat edible plants contaminated with arsenic, which, in turn, can further increase the toxicity level in their bodies and also can increase the arsenic bioaccumulation in meat and milk. In the rural areas of the Bengal Delta, arsenic contamination raised a number of social problems which are continuously weakening the structural integrity of rural society. Uses of phytoremediation and microbial remediation technologies, rainwater harvesting, use of arsenic resistant plant varieties for cultivation are some sustainable methods which can be applied for arsenic remediation. Besides, nano-agglomerates of mixed oxides have been synthesized and successfully employed for arsenic removal from aqueous solutions. Intensive investigation on a complete food chain is urgently needed in the arsenic contaminated zones, which should be our priority in future researches.
Źródło:
World Scientific News; 2015, 10; 59-87
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uptake of Microplastics by Plant: a Reason to Worry or to be Happy?
Autorzy:
Ebere, Enyoh Christian
Wirnkor, Verla Andrew
Ngozi, Verla Evelyn
Powiązania:
https://bibliotekanauki.pl/articles/1066238.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Agricultural soil
Food
Human health
Microplastic
Phytoremediation
Plant
Toxicity
Opis:
Microplastic (MP, 1 μm − 5 mm) pollution has become a global environmental concern with potential risk to ecosystem and human health. Information on the accumulation of MPs in aquatic species has been well documented, while information on the uptake and accumulation of MPs by higher plants is still very scarce. Terrestrial edible plants are directly exposed to MPs when soil was applied with sludge, organic fertilizer, plastic mulching, waste water irrigation, plastic littering, surface runoff or from atmospheric deposition of airborne MP. One study using fluorescent marker recently showed that plant can accumulate MP through uptake from MP polluted soil. Thus, potentially contaminating the base of the food-web and also indicating new exposure route to MP ingestion. This review present a discuss of the implication of these findings to human, who may be ingesting an estimated 80 g of MP through eating of plant daily as global consumption rate of plant continually increase. Also, benefit for the terrestrial ecosystem is discussed, by which plant acts as a potential remediator of MP polluted soil either by phytoextraction, phytostabilization and phytofilteration. We conclude by pointing knowledge gap and suggesting key future areas of research for scientists and policymakers.
Źródło:
World Scientific News; 2019, 131; 256-267
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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