ABSTRACT
Solar energy is the most potent source of renewable energy. Among the first attempts to harness solar energy was the development of equipment suitable for distillation and desalination. Temperature is not a very significant parameter affecting the rate of photo-Fenton reaction, especially when solar energy is used. A few studies have been conducted on environmental applications of photocatalysis; however, only a very few of them have examined the application of solar energy as the utilization of solar radiation with semiconductor micro- or nanoparticles for environmental remediation is not very common. Solar water disinfection is a water treatment method that utilizes solar radiation to destroy pathogenic bacteria and viruses present in water. Biological oxygen demand (BOD) is the amount of dissolved oxygen needed by biological organisms to break down organic materials present in a given water sample at certain temperature over a specific period by the aerobic process. BOD is a measure of the biodegradability of a particular sample of wastewater.
