scholarly journals Advances in remediation of heavy metal contaminated soil and water by Leersia hexandra Swartz

2020 ◽  
Vol 194 ◽  
pp. 04035
Author(s):  
Hui Qin ◽  
Hua Lin
Keyword(s):  
Heavy Metal ◽  
Environmentally Friendly ◽  
Treatment Method ◽  
Polluted Water ◽  
Human Beings ◽  
Current Application ◽  
Development Direction ◽  
Leersia Hexandra ◽  
Leersia Hexandra Swartz ◽  
Enrichment Characteristics

Heavy metal pollution is extremely harmful to human beings. Looking for an efficient and environmentally friendly treatment method is the focus of current research. Using plants to treat contaminated water and soil has proven to be an effective and environmentally friendly method. Leersia hexandra Swartz is a chromium hyperaccumulator, and it can also enrich copper and nickel. Since the super enrichment characteristics of Leersia hexandra Swartz were discovered, many scholars have poured into the research on Leersia hexandra Swartz. This article will give an overview of the current application status of Leersia hexandra Swartz’s purification of polluted water and soil, analyze the methods and principles used, and discuss the future development direction of Leersia hexandra Swartz’s plant remediation technology.

scholarly journals SERAPAN SIANIDA (CN) PADA Mikania cordata (Burm.f) B.L. Robinson, Centrosema pubescens Bth DAN Leersia hexandra Swartz YANG DITANAM PADA MEDIA LIMBAH TAILING TERKONTAMINASI CN

2016 ◽  
Vol 10 (1) ◽  
pp. 69
Author(s):  
Fauzia Syarif
Keyword(s):  
Heavy Metal ◽  
Plant Species ◽  
High Ratio ◽  
Green Technology ◽  
Contaminated Site ◽  
Randomized Design ◽  
Leersia Hexandra ◽  
Hyperaccumulator Plants ◽  
Leersia Hexandra Swartz

Some plant species growing in the contaminated areas, indicated high toleranceand potentially affective in accumulating pollutants in their roots and above groundportions. These plants can be utilized as hyperaccumulators for cleaning up thecontaminated sites. Study on heavy metal and CN contamination and potentialplant species for accumulator is urgently needed in order to understand the problemsand to obtain suitable technology for the solution. This research aims to examineCN accumulator plants growing in CN contaminated tailing to find a possible solutionof cleaning up by using green technology of phytoremediation. Phytoremediation isdefined as clean up of pollutants primarily mediated by photosynthetic plants. Thisstudy aims to characterized plants that grow under extreme contaminated media ofgold mined tailing and to analyse their potencies as hyperaccumulators. Mikaniacordata (Burm.f) B.L.Robinson,Centrosema pubescens Bth and Leersia hexandraSwartz which proven tolerant and dominant in the contaminated site were examinedin this research. The plants were grown in tailing waste media added by 0 ppm CN,2.5 ppm CN, 5 ppm CN dan 7.5 ppm CN using complete randomized design with 5replicates. The results showed that the plants were capable of growing under thehighest level of CN. Among three species, Mikania cordata showed the highestbiomass production followed by Centrosema pubescens and Leersia hexandra. TotalCN accumulation varied between species, the highest was reached in 2.5 ppm CNtreatment i.e. 22.48 mg/kg in Leersia hexandra, followed by Centrosema pubescens(18.92 mg/kg) and Mikania cordata (12.03 mg/kg). The highest CN content was0.085 mg in Mikania cordata treated with 7.5 ppm CN. High ratio of shoot to root CN(>1) was expected in hyperaccumulator plants to indicate that CN was more distributedin the above ground portions than in the roots. In this study the highest shoo to rootCN ratio was showed in Mikania cordata i.e.11.75

scholarly journals Study on the Potential of Hyperaccumulator Leersia hexandra swartz to Repair Chromium Contamination of Heavy Metals

2018 ◽  
Vol 175 ◽  
pp. 04026
Author(s):  
Zhiyi Lin ◽  
Hua Lin ◽  
Yian Wang ◽  
Yuhang Yuan
Keyword(s):  
Research Direction ◽  
Polluted Water ◽  
Future Research ◽  
Polluted Environment ◽  
Tolerance Mechanism ◽  
Large Area ◽  
Considerable Potential ◽  
Detoxification Mechanism ◽  
Leersia Hexandra ◽  
Leersia Hexandra Swartz

In order to control the environmental pollution caused by chromium better, this paper summaries the study about the accumulation charac-teristics, tolerance mechanism, detoxification mechanism and enrichment efficiency of chromium in Leersia hexandra swartz in recent years. It concluded that Leersia hexandra swartz has considerable potential for remediation of polluted environment, especially large-area, low-concentration polluted water, and prospects of its future research direction.

Analysis of Heavy Metal in Water used for Irrigation, Soil and Some Vegetables grown around Tin Mine Areas of Heipang District, Barkin-Ladi Local Government of Plateau State

2019 ◽  
pp. 111-119
Author(s):  
Agustina Onyebuchi Ijeomah ◽  
Rebecca Ngoholve Vesuwe ◽  
Bitrus Pam
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Food Safety ◽  
Safety Concern ◽  
Human Beings ◽  
Green Beans ◽  
Green Pepper ◽  
Transfer Factors ◽  
Mining Areas ◽  
Plateau State

Vegetables growing in mining areas have become a serious food safety concern because of the high levels of heavy metals always associated with mining. In this study, water used for irrigation, soil, cabbage, green pepper and green beans grown in tin mine areas of Heipang District, Barkin-Ladi LGA of Plateau State were analyzed for lead, cadmium and zinc, using Atomic Absorption Spectrophotometer (AAS). The concentrations of the heavy metals in water, soil, vegetables were all in the order Pb, >> Cd > Zn. In the vegetables, the order was: Pb → cabbage > green beans > green pepper; Cd → green beans > cabbage > green pepper; Zn → cabbage > green pepper = green beans. The transfer factors for all the metals (heavy metal in plant / heavy metal in soil) ranged from 0.95 to 1.48. There were high levels of Pb and Cd in all the vegetables, which may be attributed to the metals in the water used for irrigation. Whilst the concentration of Zn in all the samples were lower than recommended limits, the levels of Pb and Cd in the water, soil and vegetables were higher than the WHO/FEPA standard recommended limits reported for vegetables. The Cd concentrations of the vegetables also exceeded the tolerance thresholds for animals and human beings and therefore consumption of vegetable from the area would endanger the health of the population.

scholarly journals Porous BMTTPA–CS–GO nanocomposite for the efficient removal of heavy metal ions from aqueous solutions

RSC Advances ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 3725-3731
Author(s):  
Juan Huang ◽  
Weirong Cui ◽  
Ruping Liang ◽  
Li Zhang ◽  
Jianding Qiu
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Polluted Water ◽  
Efficient Removal

Novel porous BMTTPA–CS–GO nanocomposites are prepared by covalently grafting BMTTPA–CS onto GO surfaces, and used for efficient removal of heavy metal ions from polluted water.

scholarly journals A New Ex Vivo Model to Evaluate the Hair Protective Effect of a Biomimetic Exopolysaccharide against Water Pollution

Cosmetics ◽  
2020 ◽  
Vol 7 (4) ◽  
pp. 78
Author(s):  
Claire Tubia ◽  
Alfonso Fernández-Botello ◽  
Jan Dupont ◽  
Eni Gómez ◽  
Jérôme Desroches ◽  
...  
Keyword(s):  
Water Pollution ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Adverse Effects ◽  
Inductively Coupled Plasma ◽  
Ex Vivo ◽  
Polluted Water ◽  
Ex Vivo Model ◽  
Fiber Damage ◽  
The Impact

As an external appendage, hair is exposed to multiple stresses of different origins such as particles and gases in air, or heavy metals and chemicals in water. So far, little research has addressed the impact of water pollution on hair. The present study describes a new ex vivo model that allowed us to document the adverse effects of water pollutants on the structure of hair proteins, as well as the protective potential of active cosmetic ingredients derived from a biomimetic exopolysaccharide (EPS). The impact of water pollution was evaluated on hair from a Caucasian donor repeatedly immersed in heavy metal-containing water. Heavy metal retention in and on hair was then quantified using Inductively Coupled Plasma Spectrometry (ICP/MS). The adverse effects of heavy metals on the internal structure of hair and its prevention by the EPS were assessed through measurement of keratin birefringence. Notably, the method allows the monitoring of the organization of keratin fibers and therefore the initial change on it in order to modulate the global damage in the hair. Results revealed an increasing amount of lead, cadmium and copper, following multiple exposures to polluted water. In parallel, the structure of keratin was also altered with exposures. However, heavy metal-induced keratin fiber damage could be prevented in the presence of the tested EPS, avoiding more drastic hair problems, such as lack of shine, or decrease in strength, due to damage accumulation.

scholarly journals The research about how to absorb the Heavy metal chromium by Leersia Hexandra Wetland system

2018 ◽  
Vol 186 ◽  
pp. 012052
Author(s):  
Xiaofen Ning ◽  
Shaohong You ◽  
Qi Yang ◽  
Xiaoyu Yang ◽  
Yucui Shi
Keyword(s):  
Heavy Metal ◽  
Leersia Hexandra ◽  
Wetland System
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