Effect of Acidulation of Higher Aquatic Plants Exemplified by Lemna minor L.

2007 ◽  
Vol 43 (5) ◽  
pp. 43-54
Author(s):  
I. V. Grib ◽  
I. A. Chemeris
Keyword(s):  
Aquatic Plants ◽  
Lemna Minor ◽  
Higher Aquatic Plants

scholarly journals A METHOD FOR ACCELERATING ELECTROCHEMICAL PHYTOREMEDIATIONOF WASTE WATER FROM HEAVY METAL IONS WHEN EXPOSED TO PHYTOSORBENT PLANTS BY PHYSICAL FIELDS

2020 ◽  
pp. 132-143
Author(s):  
L.N. Olshanskaya ◽  
R.Sh. Valiev ◽  
T.V. Osipova
Keyword(s):  
Magnetic Field ◽  
Heavy Metal ◽  
Metal Ions ◽  
Aquatic Plants ◽  
Constant Magnetic Field ◽  
Heavy Metal Ions ◽  
Lemna Minor ◽  
Waste Waters ◽  
Higher Aquatic Plants ◽  
Physical Fields

The article is devoted to the problem of increasing the efficiency of purification of natural and waste waters from heavy metal ions by the method of electrochemical phytoremediation. The results of studies on the management of phytoremediation processes by exposure to higher aquatic plants by external physical fields (constant magnetic field, combined exposure to a constant magnetic field and geomagnetic field, constant magnetic field and weak electric (j) fields) are presented. The ef-fect of accelerating the sorption of heavy metal ions under the influence of external physical fields on plants of Lemna minor has been experimentally confirmed. Rational conditions for controlling the processes of selectivity and increasing the rate of electrochemical phytoremediation and the completeness of the extraction of heavy metal ions from contaminated waters using higher aquatic plants are determined. A flow chart of the treatment of wastewater from heavy metals by the phytoremediation method using a biopond / settler populated by higher aquatic plants is proposed.

137Cs and 90Sr Accumulation by Higher Aquatic Plants and Phytoepiphyton in Water Bodies of Urban Territories

2008 ◽  
Vol 44 (1) ◽  
pp. 48-59
Author(s):  
P. D. Klochenko ◽  
G. V. Kharchenko ◽  
V. G. Klenus ◽  
A. Ye. Kaglyan ◽  
T. F. Shevchenko
Keyword(s):  
Aquatic Plants ◽  
Water Bodies ◽  
Higher Aquatic Plants ◽  
Urban Territories

scholarly journals Calculation of the maximum velocity of gravity flow in the pond-clarifier with higher aquatic plants

2020 ◽  
Vol 168 ◽  
pp. 00061
Author(s):  
Yevhen Semenenko ◽  
Tetіana Demchenko ◽  
Artyom Pavlichenko
Keyword(s):  
Free Surface ◽  
Aquatic Plants ◽  
Fluid Velocity ◽  
Maximum Velocity ◽  
Resistance Coefficient ◽  
Gravity Flow ◽  
Recycled Water ◽  
Higher Aquatic Plants ◽  
Two Parameters ◽  
The Given

The analysis of the possible maximum fluid flow rates when using higher aquatic plants for clarification of recycled water in the pondclarifier of the tailing pond has carried out. The study has been performed on the basis of a mathematical model of a plane slow stationary gravity flow of a viscous fluid in two parallel layers. The results of the study made it possible to determine the fluid velocity through a layer of higher aquatic plants floating on a free surface. The maximum possible velocity depending on the layer porosity has been determined. This value is necessary to determine the rational parameters of the process of clarifying technical recycled water from particles of the given hydraulic size, taking into account the pond-clarifier geometric dimensions. It is shown that the velocity in the layer with higher aquatic plants has been determined by the ratio of two parameters of this layer - porosity and dimensionless resistance coefficient. It has been shown that the maximum velocity value coefficient in the layer with plants floating on free surface depends only on porosity of this layer and does not depend on its resistance coefficient.

Influence of Simazine on Apparent Photosynthesis of Aquatic Plants and Herbicide Residue Removal from Water

Weed Science ◽  
1969 ◽  
Vol 17 (1) ◽  
pp. 56-59 ◽  
Author(s):  
David L. Sutton ◽  
D. A. Durham ◽  
S. W. Bingham ◽  
C. L. Foy
Keyword(s):  
Dissolved Oxygen ◽  
Treatment Period ◽  
Oxygen Evolution ◽  
Aquatic Plants ◽  
Lemna Minor ◽  
Elodea Canadensis ◽  
Residue Removal ◽  
Herbicide Residue ◽  
Nutrient Culture

Simazine (2-chloro-4,6-bis(ethylamino)-s-triazine) at 0.12 to 1.0 ppmw in nutrient cultures of common duckweed (Lemna minor L.), elodea (Elodea canadensis Michx.), and parrotfeather (Myriophyllum brasiliense Camb.) inhibited oxygen evolution within 24 hr. Of the plants studied, the submersed form of parrotfeather exhibited the greatest reduction in apparent photosynthesis as measured by dissolved oxygen in the water. Simazine in nutrient culture without plants remained relatively stable during the treatment period; a slight, but not significant, diminution of chemical was detected after 4 days. Each species, elodea or emersed parrotfeather, reduced the concentration of simazine in solution within 48 hr after treatment.

The Advance of Protozoa as the Model Animal in the Environment

2013 ◽  
Vol 411-414 ◽  
pp. 3258-3260
Author(s):  
Xiu Ming Cao ◽  
Shuo Zhang ◽  
Shan Shan Wang
Keyword(s):  
Water Pollution ◽  
Aquatic Plants ◽  
Energy Flow ◽  
Environment Pollution ◽  
Environment Monitoring ◽  
Soil Environment ◽  
Quality Change ◽  
Ideal Model ◽  
Higher Aquatic Plants ◽  
Model Animal

With the development of modern industry, the problem of environment pollution becomes more and more serious. It has become an important issue to conduct the environment monitoring rapidly and effective. Fish, alga, higher aquatic plants and benthic macro-invertebrate are always used in the environment monitoring. In recent years, protozoa are widely applied to the monitor of soil environment pollution and water pollution. Protozoa are the most original and the lowest unicellular animals, and they play an important role as the predator and primary consumer in the energy flow and circulation of materials. Protozoa become an ideal model animal in the process of assessing the quality change.

Sign in / Sign up

Export Citation Format

Share Document