Screening of plants of different species and functional groups for phytomining of rare earth elements in soil

2020 ◽  
Author(s):  
Precious Okoroafor ◽  
Oliver Wiche
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Functional Groups ◽  
Plant Species ◽  
Festuca Arundinacea ◽  
Cannabis Sativa ◽  
Grass Species ◽  
Herbaceous Species ◽  
Screening Experiment ◽  
Available Information

<p>To significantly contribute to the available information on potentials of different plants species for use in phytomining of  Rare Earth Elements(REEs) , a screening experiment was conducted to directly compare at once 8 plant species belonging to two functional groups (herbs and grasses), grown on a soil with high  REEs concentrations. The plants were grown for 10 weeks on potted soils, each containing 2kg of soil.  The plants evaluated are <em>Fagopyrum esculentum, Cannabis sativa, Brassica napus</em> and <em>Sinapis alba</em> for the herbaceous species and <em>Sorghum bicolor, Zea mays, Avena sativa</em> and <em>Festuca arundinacea</em> for the grass species. Concentrations of the four REEs namely Cerium (Ce), Lanthanum (La), Neodymium (Nd) and Yttrium (Y) and amount/content of each REE contained in the species investigated were determined and the data obtained were subjected to the statistical analysis Multivariate Analysis of Variance to identify differences that exist between species, within and between functional groups. Results show that the differences observed in amount of each of the REEs phytomined by the different grass species are statistically insignificant. Contrastingly, significant differences exist between the concentrations and content of each of the REEs between the herbaceous species, with <em>F. esculentum</em> significantly showing higher potential for use in phytomining compared to the rest of the herbaceous species. Results from statistical comparison of all species shows that <em>F. esculentum</em> is the candidate that showed more potential for use in phytomining , with <em>C. sativa</em> also being the next  specie with high potential for phytomining aside from <em>F.esculentum</em>  when compared to the rest of the species investigated. Functional groups were compared, and results showed that the herbaceous specie have a significantly higher potential for use in phytomining of REEs compared to grass species. Results from this experiment contributes to existing knowledge on potentials of different plant species for use in phytomining and suggest possible candidates in comparison to others, for use in experiments that seek to improve the chances of using plants as an eco-friendly alternative to conventional mining of rare earth elements in commercial quantities.</p>

scholarly journals Rare earth elements (REEs): Effects on germination and growth of selected crop and native plant species

Chemosphere ◽  
2014 ◽  
Vol 96 ◽  
pp. 57-66 ◽  
Author(s):  
Philippe J. Thomas ◽  
David Carpenter ◽  
Céline Boutin ◽  
Jane E. Allison
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Plant Species ◽  
Native Plant ◽  
Native Plant Species ◽  
Germination And Growth

Multitracer study on the uptake mechanism of yttrium and rare earth elements by autumn fern

2002 ◽  
Vol 90 (5) ◽  
Author(s):  
Takuo Ozaki ◽  
Shizuko Ambe ◽  
S. Enomoto ◽  
Y. Minai ◽  
S. Yoshida ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Plant Species ◽  
Ionic Radius ◽  
High Uptake ◽  
Uptake Mechanism ◽  
Chelating Reagents ◽  
Uptake Mechanisms

SummaryIrrespective of low bioavailability, some plant species accumulate Y and rare earth elements (REEs) to a great extent (accumulator species). The uptake mechanisms of Y and REEs were investigated for autumn fern, one of accumulator species. For comparison, plant species which accumulated poorly REEs (non-accumulator species) were also studied. In the present investigation, two noticeable phenomena were observed. (I) Autumn fern showed no ionic-radius dependence of Y-REE uptake by leaves, while non-accumulator species showed an extremely high uptake for Y compared with REEs. (II) Y-REE uptake by autumn fern was influenced by the addition of chelating reagents to the uptake solution, while no effect was observed for non-accumulator species.

scholarly journals Phytoextraction of rare earth elements in herbaceous plant species growing close to roads

2017 ◽  
Vol 24 (16) ◽  
pp. 14091-14103 ◽  
Author(s):  
Patrycja Mikołajczak ◽  
Klaudia Borowiak ◽  
Przemysław Niedzielski
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Plant Species ◽  
Herbaceous Plant

scholarly journals Seasonal variation in water buffaloes’ diet grazing in wet grasslands in Northern Greece

Hacquetia ◽  
2019 ◽  
Vol 18 (2) ◽  
pp. 201-212
Author(s):  
Eleni T. Tsiobani ◽  
Maria D. Yiakoulaki ◽  
Georgios Menexes
Keyword(s):  
Functional Groups ◽  
Plant Species ◽  
Functional Group ◽  
Cynodon Dactylon ◽  
Foraging Strategy ◽  
Herbaceous Species ◽  
Northern Greece ◽  
Water Buffaloes ◽  
Wet Grasslands ◽  
Trees And Shrubs

Abstract Seasonal variability in grasslands’ vegetation affects animals’ diet selection. We studied the seasonal changes in water buffaloes’ diet during grazing in wet grasslands in Northern Greece. We recorded each month the plant species of the vegetation and the species consumed by buffaloes. We categorized the former into three functional groups (graminoids, legumes, and forbs) and the latter into five groups (graminoids, legumes, forbs, shrubs, and trees). There were significant differences in the proportions (%) of functional groups in the vegetation and in buffaloes’ diet between seasons (χ2 test, P<0.05). Graminoids, legumes, and forbs participated in buffaloes’ diet in all seasons, while the less preferred functional groups were trees and shrubs. Buffaloes consumed ten species in all seasons but we observed the most diverse diet, in terms of plant species, in spring. The most frequently consumed species in each functional group were Cynodon dactylon (graminoids), Trifolium repens (legumes), Cichorium intybus (forbs), Rubus sp. (shrubs), and Populus sp. (trees). However, the majority of plant species in buffaloes’ diet was in very low proportions (<1%), while buffaloes did not sample at all 38 herbaceous species. Researchers need to conduct further research to understand water buffaloes’ foraging strategy regarding plants’ anti-quality characteristics.

Possible sources of rare earth elements near different classes of road in Poland and their phytoextraction to herbaceous plant species

2021 ◽  
Vol 193 ◽  
pp. 110580
Author(s):  
Patrycja Mleczek ◽  
Klaudia Borowiak ◽  
Anna Budka ◽  
Małgorzata Szostek ◽  
Przemysław Niedzielski
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Plant Species ◽  
Herbaceous Plant

scholarly journals Camel Feed Characterization of Ethiopian Somali Region Rangelands through Traditional Knowledge

2019 ◽  
pp. 1-15
Author(s):  
Aklilu Bajigo Madalcho ◽  
Bosenu Abera Tadesse ◽  
Kefyalew Gebeyew ◽  
Gebremedhin Gebresilassie
Keyword(s):  
Plant Species ◽  
Secondary Data ◽  
Primary Data ◽  
Grass Species ◽  
Herbaceous Species ◽  
Group Discussions ◽  
Feed Resources ◽  
Pastoral Communities ◽  
Household Heads ◽  
Trees And Shrubs

The study was conducted in five administrative zones of the Ethiopian Somali Regional State, with the objectives of characterizing the major camel browse and grazed plant species and their seasonal availability in pastoral and agro-pastoral areas. A semi-structured questionnaire, group discussions, field observations, and key informant interviews were used as the primary data collection tools, while different secondary data sources were also used. A total of 150 household heads were selected purposively for formal interview. The results showed that most (90.7%) of the respondents were male and 85.3% of the sampled households were illiterate. It was revealed that browsing trees and shrubs were the major camel feed resources in pastoral and agro-pastoral areas. Although the quality and quantity of camel feed vary in dry (66%) and wet (88%) seasons; trees and shrubs were the major feed resources at all seasons, while the herbaceous species cover only 34% in both pastoral and agro-pastoral areas. The identified camel feed species in the study districts comprise 38 tree species, 20 herbaceous species, 12 shrub, 7 bush, and 17 grass species. The study revealed that there is a need to raise awareness among the pastoralist and agro-pastoral communities on the importance of browse plant species management and sustainable utilization.

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