These engineers work hard in creating production systems to save this planet and their population by reducing the pollution amount. This is through using safe processes in their field and encouraging using renewable sources. Moreover, these professionals work in laboratories to develop methods to turn unusable substances into useful products that benefit humanity, especially the food processes that keep pace with population growth. Meanwhile, they pioneered many facilities to raise the production of drugs in terms of efficiency, quality and timetable. This is not limited only to improving production of that medicines, but they also develop various devices to take a major function in taking medicines by body.
2.1 Wastewater Treatment with Microalgae Microalgae have a great potential to solve energy and environmental challenges around the world. Wastewater treatment with microalgae is a more environmental sound approach to reduce nitrogen and phosphorus and to remove heavy metals from wastewater. Microalgae can absorb significant amount of nutrients because they need large amounts of nitrogen and phosphorus for proteins (45-60% microalgae dry weight) and metals as micronutrients for their growth. William Oswald first developed the idea of treating wastewater using microalgae and performed photosynthesis in sewage treatment . Figure 2.1 briefly depicts the process involved in high rate algal pond in which algae plays a dual role by assimilating nutrients from wastewater and supplying oxygen to bacteria.
Wastewater growth is beneficial to both humans and algae as wastewater has a high nutrient value for the algae, supporting greater growth, and in the meantime, cleans out our sewage. Due to these adaptations, we are able to grow algae almost anywhere, unlike ethanol plants or oil, which needs have certain climates for good growth. These adaptations allow humans to control the growth of algae, which is beneficial because we do not need use our supply of fresh water or utilize our diminishing pieces of fertile land. We can slow down global warming in the process by placing algae harvesting facilities beside power plants so the released carbon dioxide can help the growth of the algae. To sum it up, growing algae is very easy and in the process, cleans our air and water from pollutants.
Water being the most important and valuable resource available to us on earth, covering most of the earth surface. Water is the essence of life & is required for life by the humans & the environment. With a growing population of earth, water may be misused or taken for granted by most of us which leads us to water pollution, which not only does harm our water bodies & natural environment, but eventually our drinking water & our human health. In todays world, we have changed the way our industries work, our Agricultural processes & basically everything that works. We as a society want everything to be faster, efficient & making more profit, whilst harming the environment.
Most of all, to remove pollutant is crucial characteristic of bio energy. Garbage is able to be raw material of bio energy even though it is not recyclable. For instance, ‘Fulcrum Bioenergy Company’ plans to establish its factory on Nevada waste disposal site until 2015. Animal dung that is more fatal than industrial waste is also one kind of sources for bio energy. In these processes of energy production, removing pollutant contributes to improvement of environment.
These effects are a direct result of human interaction with the natural water system. Thus it... ... middle of paper ... ...isposal of waste water from treatment plants increases so will the need for nutrient control programs to ensure the natural water bodies are being protected from degeneration. Treatment processes that have gained popularity in recent years, e.g wetland application, mechanic or chemical treatment, are becoming more acceptable as the public are becoming more aware of the effects of eutrophication. Also the use of reclaimed water is alleviating the burden on receiving water bodies. As more water is being depleted from the groundwater table the need will shift to surface water treatment for drinking water thus if the proper steps are being taken now the processing costs of the future will decline significantly.
As Earth’s population increases, there is also an increasing demand put on many of our natural resources, including freshwater, which is vital for all life on earth. Since a strain is being placed on this essential resource, efforts should be made to conserve it. The use of recycled grey water for irrigation and other needs is one way to conserve. Grey water is any non-industrial wastewater generated from domestic processes such as laundry, bathing, or cleaning that is treated for reuse. Inexpensive systems can be installed to recycle water by either purifying and filtering or diverting it into the ground to water plants.
This is why more and more efforts are being made in terms of the use of microorganisms for the conservation and protection of the biosphere. It works on the principle that microorganisms can transform the hazardous toxic wastes into less toxic or non toxic substances which may not cause any harm to the living and non living surroundings. The microorganisms act against the contaminants only when they have access to a variety of materials—compounds to help them generate energy and nutrients to build more cells. Advantages of Bioremediation a. Unlike many other remedial processes which use various chemical as well as/ or physical techniques, bioremediation is a natural phenomenon.
One sustainable solution that has been proposed by the scientific community is bioremediation. Bioremediation is the application of microorganisms or biological enzymes to treat or remove contaminants. (“In Situ Bioremediation,” para. 1) Bioremediation is a lower cost and more effective option than removing contaminated soil offsite as a preventative measure, before the contaminants reach groundwater. When contaminants reach ground water bioremediation is still an excellent option, but it takes a longer period of time to remove the contaminants.
(Alexander, 1999). Secondly they are operated easily and at low cost as compared to physical process (Wu et al., 2010b). An important aspect of these agrochemicals is that how much toxic they are but yet they have no inhibitory effect on the soil microflora but act as a source of nutrient for them. Metin Diúrak and Ferdaû Kazanici worked on this aspect of microorganisms and applied some pesticides to the soil normal microflora which include bacteria, fungi, algae, yeasts and actinomycetes and found that there is no inhibitory effect and they are utilized as a nutrient source by them. Biological remediation involves mostly enzymatic reactions (Sheng et al., 2010) which are very specific, efficient and gives better results so harmful by-products are not produced.