Co-application of indole-3-acetic acid/gibberellin and oxalic acid for phytoextraction of cadmium and lead with Sedum alfredii Hance from contaminated soil

Chemosphere ◽  
2021 ◽  
pp. 131420
Author(s):  
Yuqin Liang ◽  
Xiyuan Xiao ◽  
Zhaohui Guo ◽  
Chi Peng ◽  
Peng Zeng ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Oxalic Acid ◽  
Contaminated Soil ◽  
Sedum Alfredii ◽  
Sedum Alfredii Hance ◽  
Cadmium And Lead ◽  
Indole 3 Acetic Acid

The effect of EDDS addition on the phytoextraction efficiency from Pb contaminated soil by Sedum alfredii Hance

2009 ◽  
Vol 168 (1) ◽  
pp. 530-535 ◽  
Author(s):  
Xin Wang ◽  
Ying Wang ◽  
Qaisar Mahmood ◽  
Ejazul Islam ◽  
Xiaofen Jin ◽  
...  
Keyword(s):  
Contaminated Soil ◽  
Sedum Alfredii ◽  
Sedum Alfredii Hance ◽  
Phytoextraction Efficiency

Removal of cadmium, lead, and zinc from multi-metal–contaminated soil using chelate-assisted Sedum alfredii Hance

2019 ◽  
Vol 26 (27) ◽  
pp. 28319-28327 ◽  
Author(s):  
Yuqin Liang ◽  
Cong Zhou ◽  
Zhaohui Guo ◽  
Zhongting Huang ◽  
Chi Peng ◽  
...  
Keyword(s):  
Contaminated Soil ◽  
Sedum Alfredii ◽  
Sedum Alfredii Hance ◽  
Lead And Zinc ◽  
Cadmium Lead

Effects of EDTA and Organic Acids on Cd Desorption from Zhangshi Irrigation Area Soil

2011 ◽  
Vol 356-360 ◽  
pp. 1566-1569
Author(s):  
Hui Zhou ◽  
Wei Yang ◽  
Miao Liu ◽  
Shi Liang Li ◽  
Qian Qian Li
Keyword(s):  
Acetic Acid ◽  
Oxalic Acid ◽  
Organic Acids ◽  
Tartaric Acid ◽  
Contaminated Soil ◽  
Irrigation Area ◽  
Shenyang City

The effects of the added EDTA and organic acids (oxalic acid, tartaric acid and acetic acid) on Cd desorption of Zhangshi Irrigation Area (ZIR)contaminated soil of Shenyang city was investigated by batch balance experiments, in which the concentrations of acids, pH and temperature were examined. The results showed that EDTA, oxalic acid, tartaric acid and acetic acid modified the desorption behaviors of Cd. And the desorption level was EDTA>tartaric acid >oxalic acid >acetic acid. Also, the desorption amount of Cd increased with the concentration ranges from 5 to 40mmol/L; the desorbed amount obviously reduced with elevating pH when the pH was below 6; the adsorption was facilitated and the desorption was weakened when the pH was above 6. In addition, the Cd desorption amount raised with the temperature increasing.

Soil Washing and Bioremediation of Tailing Dam Wastes

2012 ◽  
Vol 610-613 ◽  
pp. 2405-2409
Author(s):  
Li Mei Sun ◽  
Jiang Wu ◽  
Shuai Qi Meng
Keyword(s):  
Heavy Metals ◽  
Acetic Acid ◽  
Oxalic Acid ◽  
Contaminated Soil ◽  
Soil Washing ◽  
Silica Sand ◽  
Critical Parameters ◽  
Tailing Dam ◽  
Leaching Solution ◽  
Plate Counts

The paper presents that soil washing and bioremediation technologies were employed to treat the contaminated soil. Various works were conduced in parallel with each other and th results of the laboratouy studies were used to determine critical parameters. Four lixiviants, i.e. sulphuric acid, acetic acid, oxalic acid and ethylene diamine acetic acid were tests at three concentration levels respectively. The tests showed that the leaching of the heavy metals increases as the soil porosity increases. Silica sand was added to increase porosity of the contaminated soil. Hightest Mn removal was achieved mainly by sulphuric and oxalic acid at 0.001M at all soil samples. EDTA was significantly efficient in the removal of Ni and Zn. The recovery of heavy metals, particalarly Mn, decreased as the depth of samping increased. Heterogeneous bacteria and filamentous organism plate counts were conduced to evaluate the growth of the bacteria and filamentous organisms in the soil. The results from this study suggest that the leaching of heavy metals from the contaminated soil is to a large extent dependant on the pH of the leaching solution. By increasing the soil’s porosity and bioremediating the soil, higher extractions of metals were achieved.

Ectodesmata as Revealed By Freeze-Etch Preparations of Plant Epidermal Cell Walls

1973 ◽  
Vol 31 ◽  
pp. 468-469
Author(s):  
N.C. Lyon ◽  
W. C. Mueller
Keyword(s):  
Electron Microscopy ◽  
Acetic Acid ◽  
Nitric Acid ◽  
Oxalic Acid ◽  
Light Microscopy ◽  
Epidermal Cell ◽  
Cell Walls ◽  
Plant Viruses ◽  
Plant Leaves ◽  
Thin Sections

Schumacher and Halbsguth first demonstrated ectodesmata as pores or channels in the epidermal cell walls in haustoria of Cuscuta odorata L. by light microscopy in tissues fixed in a sublimate fixative (30% ethyl alcohol, 30 ml:glacial acetic acid, 10 ml: 65% nitric acid, 1 ml: 40% formaldehyde, 5 ml: oxalic acid, 2 g: mecuric chloride to saturation 2-3 g). Other workers have published electron micrographs of structures transversing the outer epidermal cell in thin sections of plant leaves that have been interpreted as ectodesmata. Such structures are evident following treatment with Hg++ or Ag+ salts and are only rarely observed by electron microscopy. If ectodesmata exist without such treatment, and are not artefacts, they would afford natural pathways of entry for applied foliar solutions and plant viruses.

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