scholarly journals The Improvement of Phytomediation on the Treatment Effectiveness of Heavy Metals with Energy Sunflower Plants with Calcium Peroxide and Phytohormones

2018 ◽  
Vol 1 (4) ◽  
Author(s):  
T Y TEH ◽  
Wuminhao Wu ◽  
Kf Chen ◽  
Yp Peng
Keyword(s):  
Heavy Metals ◽  
Treatment Effectiveness ◽  
Chelating Agent ◽  
Growth Period ◽  
Control Group ◽  
Culture Experiment ◽  
Water Culture ◽  
Calcium Peroxide ◽  
Plant Extraction ◽  
Pot Culture

　Phytomediation is an environmentally friendly green rehabilitation technology that is often incorporated with an application to improve calcium peroxide and phytohormones required for the growth of agricultural plants with the expectation to improve the effectiveness of plant rehabilitation. This study mainly consists of two parts: (1) water culture experiment and (2) pot culture experiment. In the water culture experiment, we attempt to understand the influence of the addition of calcium peroxide, phytohormones (IAA and GA3) and a chelating agent on the growth of sunflower plants. From the growth, we are then able to know the effectiveness of the addition of phytohormones. However, in the pot culture experiment, when hormones and the chelating agent EDTA are introduced to different plant groups at the same time, if the nutrition in the water required by plants is not available, the addition of the hormone cannot negate the toxicity caused by EDTA. In terms of calcium peroxide, due to quick release of oxygen in water, this study fails to apply calcium peroxide to the water culture experiment.     When the pot culture experiment is used to examine the influence of hormones at different concentration levels on the growth of sunflowers, GA3 10-8M is reported to have the optimal effectiveness, followed by IAA 10-8M; IAA 10-12M has the lowest effectiveness. According to an accumulation analysis of heavy metals at different levels, GA3 concentrates in leaves to transport nutrition in soil to leaves. This results in an excellent TF value of 2.329G of GA3 than 1.845 of the control group indicating that the addition of the hormone and chelating agent to GA3 increases the TF value and the chelating agent is beneficial to the sunflower plant. If we examine phytoattenuation ability, the one-month experiment was divided into three stages for ten days each. The concentration level of heavy metals in the soil at each stage dropped continuously while that of the control group decreased from 31.63 mg/kg to 23.96 mg/kg, GA3 from 32.09 mg/kg to 23.04 mg/kg and EDTA from 30.65 mg/kg to 25.93 mg/kg indicating the quickest growth period of the sunflowers from the formation of the bud to blossom. During the stage, the quick upward transportation of nutrition results in quick accumulation of heavy metals; the accumulated speed of heavy metals is found higher than that of directly planted plants. This study shows an improvement in the effectiveness of the addition of hormones on plant extraction and when rehabilitation is incorporated with sunflowers with the beginning bud formation, better treatment effectiveness can be reached.

Hyperaccumulative property comparison of 24 weed species to heavy metals using a pot culture experiment

2008 ◽  
Vol 152 (1-4) ◽  
pp. 299-307 ◽  
Author(s):  
Shuhe Wei ◽  
Qixing Zhou ◽  
Hong Xiao ◽  
Chuanjie Yang ◽  
Yahu Hu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Weed Species ◽  
Culture Experiment ◽  
Pot Culture

scholarly journals Synthetic Amphoteric Cryogels as an Antidote against Acute Heavy Metal Poisoning

Molecules ◽  
2021 ◽  
Vol 26 (24) ◽  
pp. 7601
Author(s):  
Alzhan Z. Baimenov ◽  
Ildar R. Fakhradiyev ◽  
Dmitriy A. Berillo ◽  
Timur Saliev ◽  
Sergey V. Mikhalovsky ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Morphological Structure ◽  
Chelating Agent ◽  
Acute Poisoning ◽  
Control Group ◽  
High Survival ◽  
Agent Based ◽  
In Vivo Experiments ◽  
Acid Sodium Salt

The effectiveness of an amphoteric cryogel (AAC) as an oral sorbent (enerosorbent) for the treatment of acute poisoning of small animals (rats) with heavy metals (HMs) was studied in in vivo experiments. The morphological structure of the cryogel was examined using scanning electron microscopy/energy-dispersive X-ray analysis and confocal microscopy. The use of the cryogel in the treatment of rats administered an LD50 dose of Cd(NO3)2, CsNO3, Sr(NO3)2, or HgCl2 in aqueous solution showed their high survival rate compared to the control group, which did not receive such treatment. The histological and chemical analysis of internal tissues and the biochemical analysis of the blood of the experimental animals showed the effectiveness of the cryogel in protecting the animals against the damaging effect of HMs on the organism comparable with unithiol, a chelating agent based on 2,3-dimercapto-1-propane sulfonic acid sodium salt (DMPS) approved for the treatment of acute poisoning with some heavy metals.

Enhanced Phytoextraction of EDTA and EDDS in Polluted Soil

2014 ◽  
Vol 507 ◽  
pp. 841-844
Author(s):  
Wei Yang Bai
Keyword(s):  
Heavy Metals ◽  
Zea Mays ◽  
Contaminated Soil ◽  
Zea Mays L ◽  
Brassica Campestris ◽  
Chelating Agent ◽  
Polluted Soil ◽  
Control Group ◽  
Environmental Persistence ◽  
Enhanced Phytoextraction

In order to minimum high environmental persistence while enhancing the effects of phytoextract heavy metals in plant, though applied different ratio of non-biological chelating agent EDTA and biological chelating agent EDDS application phytoremediation into the Rape (Brassica campestris L), monocots corn (Zea mays L). This experiment was conducted with a simulation in Pb, Cu, Cd complex artificially contaminated soil. The results show that appling chelator EDTA-EDDS application on the corn and the rape were play important promoting role in the metal of soil, and were more than the effects of the accumulation of the single EDTA or single EDDS. The concentrations of mobile metals Pb, Cu in soil were the highest of 386.5 mg·kg-1, 1369 mg·kg-1, adding treatment 2 (EDTA / EDDS = 2:1), respectively the control group. The concentrations of mobile metals Cd in soil were the highest of 89.6 mg·kg-1, adding treatment 3 (EDTA / EDDS = 1:1), respectively the control group.

scholarly journals Insights into Heavy Metals Leakage in Chelator-Induced Phytoextraction of Pb- and Tl-Contaminated Soil

2019 ◽  
Vol 16 (8) ◽  
pp. 1328 ◽  
Author(s):  
Xuexia Huang ◽  
Dinggui Luo ◽  
Xiangxin Chen ◽  
Lezhang Wei ◽  
Yu Liu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Oxalic Acid ◽  
Acid Rain ◽  
Contaminated Soil ◽  
Influencing Factor ◽  
Chelating Agent ◽  
Control Group ◽  
Uptake Coefficient ◽  
Diethylene Triamine Pentaacetic Acid ◽  
Induced Phytoextraction

Chelators including DTPA (diethylene triamine pentaacetic acid) and oxalic acid were selected for inducing phytoextraction of heavy metals (HMs) from Pb-, Tl-, and Pb-Tl- contaminated soil, in which heavy metals leakage was highly remarkable. Results showed that compared with the control group without chelating agent under planting conditions, the extraction efficiency (i.e., uptake coefficient) of Pb, Tl increased by 86%, 43% from Pb-Tl- contaminated soil in the presence of oxalic acid, and there was no significant change in heavy metal leakage under rainfall conditions. It was the best phytoremediation scheme in this work. Under rainfall conditions, the HMs concentration in the leachate showed a linear decreasing trend. Acid rain promoted the leakage of heavy metals, and the average leached amount of Tl increased by 1.47 times under acid rain conditions. However, for Pb, DTPA was the main influencing factor, followed by acid rain.

Effects of NTA on the Fate of Heavy Metals in Sediments

1993 ◽  
Vol 28 (8-9) ◽  
pp. 191-194 ◽  
Author(s):  
S. L. Lo ◽  
L. J. Huang
Keyword(s):  
Heavy Metals ◽  
Sodium Tripolyphosphate ◽  
Equilibrium Concentration ◽  
Chelating Agent ◽  
Metal Species ◽  
Pollution Problem ◽  
Trisodium Salt ◽  
Major Factors ◽  
Apparent Equilibrium ◽  
Degradation Time

Sodium tripolyphosphate (STPP), which is widely used as a builder in synthetic detergents, was found as one of the major factors of eutrophication in rivers and lakes. Many countries have used nitrilotriacetate (NTA) in detergents to replace STPP, but it induced another pollution problem. Because NTA is an effective chelating agent, it will dissolve heavy metals from the sediments and affect the fate of metal species in rivers. The purpose of this study is to investigate the effect of the mobilization of heavy metals from sediments by NTA. The experimental results indicated that NTA increases the mobilization of heavy metals as the shaking time increases and reaches an apparent equilibrium concentration after 24–48 hours. Typical results show that using 20mg/l of NTA and shaking time of 6 days, the fraction mobilized is about 8 to 15% for Cu, 1 to 7% for Zn, 7 to 10% for Pb, and 7 to 30% for Cd. Hardness of the water affects the formation of heavy metal-NTA complexes significantly. Biodegradation of the trisodium salt of NTA starts after 6–9 days with degradation time of the metal-NTA complexes decreasing in the order of Cu > Cd > Zn > Pb > Ca.

Variations in Mineral/heavy metals profiling and preventive role of trichomes in Peach Fruits treated with CaC2

2020 ◽  
Vol 23 ◽  
Author(s):  
Muhammad Irfan ◽  
Safdar Abbas ◽  
Beenish Jehan Azhar ◽  
Shakeel Ahmad ◽  
Hafsa Muhammad ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Nutritional Value ◽  
Fine Powder ◽  
Calcium Carbide ◽  
Control Group ◽  
Tandem Accelerator ◽  
Health Promoting ◽  
Elemental Profiling

Background: Phytonutrients in peach fruits have health promoting antioxidants against various chronic diseases. However, there is no extensive data to show the nutritional values of Local peach cultivars after post-harvest treatments. Objective: Mainly this study was objective to determine the effect of calcium carbide on nutritional value and quality of fruits of Pakistani peach cultivars. Methods: The peach fruits were collected from three different peach orchids of KPK and the fruits were divided into 4 groups while 5th group was collected from local fruit shop. Each experimental group was treated with different concentration of calcium carbide whereas control group was not treated. The peel and pulp samples were oven dried and ground to fine powder separately. The elemental compositions were determined using Particle Induced X-ray emission and Pelletron Tandem Accelerator. Result: Sixteen elements were identified in peach fruits and the elements were Al, P, S, Cl, K, Ca, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, and Se. In peel, concentration of some elements increased or decreased after treatment with CaC2 while in pulp the conc. of nearly all detected elements was increased in treated samples. We found significantly high amount of heavy metals traces including As, Se, Co, Si, and P in peach fruits treated with CaC2. Interestingly, the presence of trichomes in peach skin prevents the transfer of these heavy metals deep into the pulp which was also verified by the elemental profiling of nectarines. Conclusion: Conclusively, the artificial ripening with CaC2 changed the nutritional value of peach fruits that has higher health risks if consume with the peel. According to our best knowledge, this is the first report that highlights the effects of CaC2 which deteriorate the nutritional value of peach fruits in Pakistan.

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