Presence of either cyanide or ...

Presence of either cyanide or phenol is highly dangerous, and in the presence of both, the effect is compounded. summarizes the available technologies for their treatment and emphasizes recent advances and advantages of biological abatement of these pollutants.

1. Cyanide and phenol are found extensively in the effluents of refinery, coke plant, electroplating industries and are extremely dangerous to environment. Commercial granular activated carbon can be used as an adsorbent for the simultaneous removal of cyanide and phenol.
2.  Phenols and cyanides can be recovered/removed from wastewater streams using various physicochemical techniques practiced commercially. Lack of complete mineralization, cost-effectiveness, and release of secondary by-products are amongst a few of the major considerations that limit the installation of such processes. Biological removal of such pollutants from industrial waste has gained momentum in recent years, as they promise to surpass the major drawbacks laid by the physicochemical methods and can be practically carried out in all conditions.
3. The solar photo-catalytic system performance was tested in terms of the phenol removal and TOC mineralization efficiency by using FeSO4 as a catalyst and Oxalic acid as a solar photo assisted agent to enhance the process efficiency. Different operating conditions studied to investigate the performance of the photo-catalysis system, such as initial phenol concentration, initial H2O2 concentration, FeSO4/Oxalic weigh ratio, pH of solution, and solution flow rate. The operating variables optimized to obtain a maximum efficiency for the system performance.