PHYTOREMEDIATION OF PHENOL AND CYANIDE FROM INDUSTRIAL WASTE WATER

Abstract

Various treatment processes had done for the treatment of waste water and ground water for example biological degradation, adsorption. But these processes are very costly and only applicable for the small amount of water. 1-lence an alternative process for wastewater treatment is introduced i.e phytoremediation which is basically a plant based technology, which uses the various plants for the treatment of waste water and remove the toxic pollutants from wastewater. This treatment process is relatively cheap and considered the most suitable option for various countries. Several mechanisms and application methods for phytoremediation are introduces from which the phytotoxicity of contaminants can be calculated by the toxicity measurement of contaminants through the plants. The cyanide and phenol removal percentage of various plants have different value and can be determined by the toxicity measurement and weight or concentration measurement of cyanide in the nutrient solution. Cyanide and Phenol are most dangerous pollutants of the environment which discharges from various industries such as coke industry. In the present study cyanide and phenol was removed from the industrial wastewater using E. Crassipes and Zea Mays by phytoremediation process. A study was conducted in controlled environmental conditions such as 25 °C temperature and 75 % relative humidity. Phytoremediation of cyanide and phenol showed significant effect on Normalized relative transpiration and removal rate of cyanide and phenol. Variation in the percentage removal of cyanide and phenol at varying initial concentration and p1-I was observed. The metabolic properties such as chlorophyll, protein, carbohydrate and starch were changes at different concentration cyanide and phenol at different rates. The experimental data were examined in the absorption studies by isotherms. The Langmuir and Temkin isotherms were used for the evaluation of the experimental data and their constants were calculated. The Langmuir isotherm was the best fitted model in the experimental data for cyanide and phenol both.