Ornamental plants for the phytoremediation of heavy metals: Present knowledge and future perspectives

Heavy metal pollution is among the important environmental problems in the world. Many techniques have already been used to remove the heavy metals such as lead (Pb) and cadmium (Cd). Among them, the phytoremediation method is an environmentally friendly and green technology. This study was carried out to determine the efficiency of fulvic acid (FA) application in removing Pb and Cd from polluted soil using Tagetes eracta L. and Zinnia elegans Jacq. ornamental plants. The results indicated that, FA application, number of flower per plants, and plant fresh weight of Tagetes eracta plants and Zinnia elegans plants increased 187.5%, 104.5% and 155.5%, 57.7%, respectively with application of 7000 mg L−1 FA at 100 mg kg−1 Pb pollution condition, whereas 42.85%, 16.5%, and 44.4–36.1% with application of 7000 mg L−1 FA at 30 mg kg±1 Cd pollution condition, respectively. With the FA application in the Zinnia elegans plant, the root part has accumulated 51.53% more Pb than the shoot part. For Cd, the shoot part accumulated 35.33% more Cd than the root. The effect of FA application on superoxide dismutase (SOD), peroxidase (POD) and, catalase (CAT) of the Tagetes eracta were decreased as 32.7%, 33.1%, and 35.1% for Pb, 21.2%, 25.1%, and 26,1%, for Cd, and 15.1%, 22.7%, and 37.7% for Pb, and 7.55%, 18.0%, and 18.8% for Cd were in Zinnia elegans respectively. In conclusion, Tagetes eracta and Zinnia elegans can not be recommended for remediation of Pb and Cd polluted area, but FA can be recommended for Pb and Cd stabilization in polluted soil.

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Plant-driven removal of heavy metals from soil: uptake, translocation, tolerance mechanism, challenges, and future perspectives

Environmental Monitoring and Assessment ◽

10.1007/s10661-016-5211-9 ◽

2016 ◽

Vol 188 (4) ◽

Cited By ~ 100

Author(s):

Sveta Thakur ◽

Lakhveer Singh ◽

Zularisam Ab Wahid ◽

Muhammad Faisal Siddiqui ◽

Samson Mekbib Atnaw ◽

...

Keyword(s):

Heavy Metals ◽

Future Perspectives ◽

Tolerance Mechanism ◽

Soil Uptake ◽

Removal Of Heavy Metals

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Distribution of Heavy Metals in Vegetative Biofiltration Columns

Water ◽

10.3390/w12030747 ◽

2020 ◽

Vol 12 (3) ◽

pp. 747

Author(s):

Rezaul Chowdhury ◽

Jameelu Abaya ◽

Taoufik Ksiksi ◽

Mohamed Mohamed ◽

Simon Beecham ◽

...

Keyword(s):

Heavy Metals ◽

Ornamental Plants ◽

Effluent Water ◽

Before And After

This study investigated the distribution of heavy metals in vegetative biofiltration columns irrigated by synthetic greywater. Twelve species of ornamental plants (three plants from each species) were planted in the same designed 36 biofiltration columns. Samples of effluent water, soils, roots, shoots and leaves were collected and analyzed. It was observed that before irrigation, the distribution of copper was in soils (0%), roots (42%), leaves (37%) and shoots (21%). After irrigation, this distribution changed to soils (29%), roots (39%), leaves (17%) and shoots (15%). It was found that lead concentrations decreased in soils from (84% to 7%), but increased in plants (from 16% to 93%) following irrigation with greywater. In contrast, the distribution of zinc changed from leaves (46%), roots (22%) and soils (16%) before irrigation to 89% in leaves and soils and 11% in shoots following irrigation. The chromium distribution before and after irrigation was found to be almost unchanged in soils, shoots and effluent water, but it increased in roots (19.4% to 26.9%) and decreased in leaves (11.4% to 5.8%). The outcomes of this study demonstrated that heavy metals mostly accumulate in soils and roots, and it is necessary to investigate their potential detrimental effects on the receiving environment.

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Digital transformation and 3D printing of transtibial load-bearing prosthesis in India: recent advances, challenges and future perspectives

Journal of 3D Printing in Medicine ◽

10.2217/3dp-2019-0013 ◽

2019 ◽

Vol 3 (4) ◽

pp. 185-193 ◽

Cited By ~ 1

Author(s):

Soikat Ghosh Moulic ◽

Sanjoy Singh ◽

Riyaz Hussain ◽

Girish Murthy ◽

Yash Khawade ◽

...

Keyword(s):

Heavy Metals ◽

3D Printing ◽

New Technologies ◽

Weight Bearing ◽

Digital Transformation ◽

Assistive Devices ◽

Future Perspectives ◽

Load Bearing ◽

Materials Used ◽

Printing Techniques

The field of rehabilitation and assistive technology has witnessed various approaches and changes in the course of its evolution. Traditional materials like wood or heavy metals have been replaced by resins and plastics. The need to deliver assistive devices has quickly resulted in the creation of new technologies like 3D printing and digital transformation, internet of things IoT. This article addresses the development of applying digital transformation and 3D printing techniques to produce socket designs for weight bearing transtibial prosthetic system. It also focus on efficacy of the load-bearing transtibial sockets, design philosophies involved, materials used and the forthcoming challenges. This initiative involves experienced clinical prosthetists, product designers, digital modelers and additive manufacturing engineers working toward this application.

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Cancer Stem Cells and Autophagy: Present Knowledge and Future Perspectives

Stem Cell Biology and Regenerative Medicine - Autophagy in Health and Disease ◽

10.1007/978-3-319-98146-8_11 ◽

2018 ◽

pp. 163-177

Author(s):

Bakiye Goker Bagca ◽

Cigir Biray Avci

Keyword(s):

Stem Cells ◽

Cancer Stem Cells ◽

Present Knowledge ◽

Future Perspectives

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Phytoextraction of heavy metals from contaminated soil, water and atmosphere using ornamental plants: mechanisms and efficiency improvement strategies

Environmental Science and Pollution Research ◽

10.1007/s11356-019-04241-y ◽

2019 ◽

Vol 26 (9) ◽

pp. 8468-8484 ◽

Cited By ~ 31

Author(s):

Behnam Asgari Lajayer ◽

Nader Khadem Moghadam ◽

Mohammad Reza Maghsoodi ◽

Mansour Ghorbanpour ◽

Khalil Kariman

Keyword(s):

Heavy Metals ◽

Soil Water ◽

Contaminated Soil ◽

Ornamental Plants ◽

Efficiency Improvement ◽

Improvement Strategies

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Transfer of Heavy Metals (Cd, Pb, Cu and Zn) from Roadside Soil to Ornamental Plants in Nanjing, China

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.356-360.3051 ◽

2011 ◽

Vol 356-360 ◽

pp. 3051-3054 ◽

Cited By ~ 2

Author(s):

Zhu Hong Ding ◽

Xin Hu

Keyword(s):

Heavy Metals ◽

Inductively Coupled Plasma ◽

Ornamental Plants ◽

Translocation Factor ◽

Emission Spectrometry ◽

Roadside Soil ◽

Inductively Coupled ◽

Nanjing City ◽

Species Specific ◽

Cu And Zn

Roadside soil, dusts, and three ornamental plants-Begoniaceae (Begonia semperflorens Link et Otto), Tagetes (Tagetes erecta Linn.), and Salvia (Salvia splendens Ker-Gawle) were collected from urban arteries in Nanjing City, China. Concentrations of metals (Pb, Cd, Cu and Zn) were analyzed using inductively coupled plasma atom emission spectrometry and inductively coupled plasma mass spectrometry. Cd was the most important contaminant in roadside soil and dusts. Generally, Begoniaceae accumulated more metals than Tagetes and Salvia. The order of bioconcentration factor values for three kinds of plants were Cd > Cu > Zn > Pb, suggesting Cd was more easily accumulated by ornamental plants than Zn and Pb from soils to roots. The values of the translocation factor show the significant species specific characteristics on the ability of metals (Cd, Cu, Zn and Pb) translocation from roots to leaves. Begoniaceae was recommended as a bioindicator of heavy metals in the urban environment.

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