Phytoremediation Of Two Types Of Factory Waste Water Using Selected Plant Species

No Thumbnail Available
Hind Ahmed Babiker, Rehemtalla
Journal Title
Journal ISSN
Volume Title
Polygenum glabrum, Ruellia patula, Helianthusannuus, Moringa olefera and Nerium oleander plant species were investigated for their phytoremediation abilities for some mineral elements present in waste waters of two factories (textile dyeing and soap factories). The quantities of the elements were estimated using XRF machine The experiments were divided into two major groups. The first group: consisted of Ruellia sp. and Polygonum sp; which were subjected to the following treatments:- A/ treatments with textile-dyeing waste water at different concentration. This type of treatment lead to reduction of percentage absorption of calcium and potassium relative to the control in both plants. Ruellia sp exhibited a percentage absorption increase per copper, nickel, lead and molybdenum, compared to the controls, in manner which proved to be better than what was shown by Polygonum sp. Also Polygonum sp exceeded Ruellia sp in its ability to absorb cromium, bromium, Cobalt and Manganese while Iron reflected a definite decrease . B/ Treatment with different concentration of soap factory waste water. In this case a decrease was recorded for the percentage absorption of calcium, potassium and manganese in the case of Ruellia sp plant, while general increase was observed for zinc, nickel, molybodium and bromium for the same plant species with values higher than those observed for Polygonium sp. This trend was accompanied by a decrease in percentage. Absorption for Calcium in the case of Polgonium sp, although absorption of potassium and chromium was higher in Polygonium sp.. A considerable increase was also noticed for manganese absorption when high concentrations of soap waste water were used in the case of XVIII Polygonum sp.. As for lead, a decreased in percentage absorption took place in both plants relative to the controls except for Ruellia sp treated with low concentration of the soap factory waste water. Percentage absorption for copper and cobalt was more or less constant in both plants and different from the inconsistent values observed for rubidium. However, strontium and ferric exhibited decrease relative to the controls in both Ruellia sp and Polygonium sp. C/Submergence of plant roots in different concentrations of textile dyeing waste water. When adopting this method, generally both Ruellia sp and Polygonium sp exhibited an increase in percentage absorption of potassium and Bromium sp. Thus exceeding their control counter parts. The increase in lead contents was clear in all concentrations used, except for Polygonium sp treated with low concentration of waste water. The general picture for the other elements was a combination of inconsistency for some and fluctuation for others. The only element which was not affected by the waste water treatment was copper. The second group pants consisted of five members (recoded at the beginning of abstract) which were treated with alkaline soap factory waste water before and after PH adjustment using Hcl; to find out the extent of the alkalinity effect of the waste water on the absorption of elements by the plants and hence its effect on their phytormediation abilities. It was found that PH adjustment had clearly affected the absorption of Potassium, Calcium, Copper, Lead and Rubidium; in the case of Polygonum sp. The highest positive iron value as a result of pH adjustment was recorded in the case of Moringa sp; while Nerium sp was found to absorb Zinc and Manganese more positively as a result of the treatment. On the other hand, Helianthus sp plants reflected better XIX absorption for nickel, molybdenum, bromium and copper, compared to the other four plants, as a result of the adjustment. However, pH adjustment did not help increasing Chromium uptake except in the case of Ruellia sp The element which was not at all affected by the treatment was Strontium. Generally the investigation had shown great variations in the values of the absorbed elements and this may be attributed to differences in the applied treatments or may probably be due to genetic differences among the plant species investigated.
Phytoremediation,Two Types,Factory Waste Water,Plant Species