Potential role of Ceratophyllum demersum in bioaccumulation and tolerance of some heavy metals

Mahmoud, Kadria M. A.; Mahmoud, Hassnaa A.; Sayed, Sara S. M.

doi:10.21608/ejabf.2018.9738

Cited by 4 publications

(1 citation statement)

References 33 publications

(39 reference statements)

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“…Ceratophyllum plant powder came second in trait of amount of Cadmium released. This may be due to relatively high Cadmium content of original plant (1.37 mg Cd kg -1 dry matter, Table 1) and its high ability to adsorb heavy metals.This is in line with what [29], mentioned, who showed that Ceratophyllum plant has a high efficiency in removing heavy metals, including Cadmium, from polluted water. Activated charcoal was excelled on Arundo donax plant powder in increasing amount of released Cadmium,this may be due to high capacity of Charcoal to adsorb ions of heavy metals such as Cd, which leads to saturation of its pores with Cd, and then an increase in amount released from it upon extraction.This is consistent with what was found by [28], who indicated presence of active groups such as the carboxyl group and phenol in charcoal, which increase the adsorption process and thus increase the amount released from element after extraction.…”

Section: Effect Of Number Of Extraction Times On Concentration Of Cad...supporting

confidence: 92%

Removal of some Heavy Metals from Industrial Wastewater and Gray Water by using some Natural and Organic Materials

Hameed,

Naser

2023

IOP Conf. Ser.: Earth Environ. Sci.

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A study was conducted for knowing the quantity and quality of heavy metal ions adsorbed on surfaces of treatment materials used in treatment of polluted water and to know the most efficient in removal process. Study included conducting two experiments, the first is laboratory, which is treatment of two polluted waters, namely industrial water and gray water, using four natural treatment materials as filters, which are activated Charcoal, Eichhornia crassipes plant powder, Ceratophyllum plant powder, and Arundo donax plant powder. It used poles made of polyethylene with a length of 100 cm and a diameter of 10 cm equipped with a tap from bottom, a layer of glass wool was placed at bottom, and then treatment materials were placed on top of it at a height of 50 cm. A piece of gauze cloth was placed over it for filtering polluted water from solids. Polluted water was passed after being filtered from top of column and left for 24 hours for equilibrium, then filtrate was collected from bottom of column. Second experiment, it is liberation experiment for heavy metals adsorbed on treated materials, where heavy metals were extracted by a 0.005M concentration of DTPA solution. This process was repeated five times for same treatment material and concentration of heavy metals adsorbed was measured each time. Results showed the following: 1-High concentrations of heavy metals, each of Lead, Cadmium, Zinc and Nickel in industrial water, where they reached 5.190, 0.043, 3.727 and 0.371 mg L-1, respectively, exceeding the limits allowed by World Food and Health Organization for each of Cadmium, Zinc and Nickel, while concentrations of Lead is within internationally permitted limits. As for the gray water, concentrations of Cadmium excelled the internationally permitted limits, while concentrations of Lead, Zinc and Nickel were within internationally permitted limits. 2-Concentration of Lead and Cadmium in all materials used in bioremediation, with exception of coal, exceeded internationally permitted limits in plants. Concentrations of Zinc and Nickel in all materials used in bioremediation did not exceed the internationally permitted limits, while coal did not record the presence of Zinc and Nickel because it is a porous, burned carbonaceous material. 3-Increasing amount of heavy metals liberated from various treatment materials through bioreclamation process in first three extractions, then it began to gradually decrease in fourth and fifth extractions. The different treatment materials varied in amount of heavy metals released, and they can be arranged as follows in terms of amount released of heavy metals: Eichhornia crassipes plant powder > Ceratophyllum plant powder > activated charcoal > Arundo donax plant powder. 4-Highest amount of heavy metals was released from materials used in industrial water, then gray water for Lead and Cadmium, while treatment materials used in industrial water and then gray water excelled in amount released for elements Zinc and Nickel.

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Section: Effect Of Number Of Extraction Times On Concentration Of Cad...supporting

confidence: 92%