What Are The Advantages And Disadvantages Of Bioremediation?

These two materials, in particular, are dangerous to local ecologies and populations. Thus, there is not only an identified need to reduce the use of these two materials, but also a need to increase recycling of these two materials.

Chemical solutions are different than biological spills because chemicals can do serious damage to living organisms and won’t be completely cleaned in routine waste treatment faculties. Also bleach solution wouldn’t remove acid or base spills they have to be treated different.

Another common remediation technique is stabilization or solidification which aims to alter the contaminants into a less soluble or mobile form (Wuana and Okieimen, 2011; Mulligan, Yong, and Gibbs, 2001; United States Environmental Protection Agency, 1991). In both methods water and a site-specific chemical solution is mixed into the soil to either alter its physical - make it less soluble - or chemical - reduce mobility - properties to make it less likely that the contaminants will move into other locations or be inhaled (Wuana and Okieimen, 2011; Mulligan, Yong, and Gibbs, 2001). Chemical treatment can also fall under the umbrella term of stabilization. Chemical treatment is add chemical solutions to the soil to detoxify the soil and can be used as a pre-treatment for other techniques such as solidification (Wuana and Okieimen, 2011; Mulligan, Yong, and Gibbs, 2001). These techniques are typically preferred due to lower costs but other physical elements of the soil, such as boulders, can make mixing the soil difficult and the process can volatilize and release volatile compounds (Mulligan, Yong, and Gibbs, 2001; United States Environmental Protection Agency, 1991). Mobility of contaminants can also be reduced by using the technique of vitrification through the process of heating up the soil (Wuana and Okieimen, 2011; United States Environmental Protection Agency, 1991). This method results

Available resources during this course includes two textbooks; “Introduction to ecotoxicology,” and “A textbook of modern toxicology.” Additional resources include various videos, complimentary transcripts to the videos, supplemental readings, the UOP online Library, and web searches.

Does Bleach Eliminate Bacteria? Abstract There are many methods used to destroy bacteria and this experiment tests the affects of Clorox bleach on bacteria. It will outline the methods used to determine if bleach could, or should be, used to decrease the amount of bacteria and whether or not this particular method is effective. The experiment will also test whether the levels of phosphorus and phosphatase in the soil are affected.

Fruitvale was a perfect town. There was a nice creek (Strawberry Creek) that dogs and children could play in and a very good diner that families could eat out at. Fruitvale was a mini fairy-tale land, until they hit reality. Fruitvale was recently contaminated by a No-Bug Pesticide that farmers had been using to get rid of the bugs eating their crops. Twelve wells were tested and the No-Bug Pesticide had not contaminated the Fruitvale Municipal Water Well yet. After one year, we tested all of the wells again to see how far the contaminant has spread. We have found that Fruitvale has approximately three years to get Fruitvale de-contaminated. We want to keep the cost at a minimum and all of the Fruitvale residents safe. To meet these goals, we hypothesize that bioremediation would be the most efficient way to accomplish the following task of making Fruitvale a safe

ioremediation refers to the use of organisms, particularly microorganisms, to transform or degrade a contaminant to make it harmless (Antizar-Ladislao 2010). One well- characterized example is the bioremediation of the Exxon Valdez oil spill off the Alaska coast; the treatment has largely eliminated pollutants and wastes along hundreds of miles of coastline (Atlas and Hazen 2011). Currently, bioremediation is regarded as a cost-effective remediation technology potentially appropriate for large polluted areas, such as contaminated water and soil. Its potential safety and efficiency will certainly accelerate further development of the

The clean up phase of the railroad avenue site has used solvent flushing for enhanced in-situ bioremediation in hot spot PCE zones and dissolved-phase plume. The site is also monitored at least

Deposition of the various wastes from the excavation process has a significant effect on the composition of micro-organisms on the environment. The remains are composed of biocides and heavy metal which have a significant effect on the environment and its inhabitants. Natural gases that escape such as methane mix with vapor from the environment, resulting in increased acidity of the soil. This reduces the productivity of land as crops do very poorly under such saline conditions (DiGiulion, Wilkin, Miller & Oberley, 2011). The acid levels leak to the earth’s surface changing the oxygen and bacterial contents of the soil structure. This in return results in the plants being unable to fix nitrogen, the consequence being the reduced hydration capability if the plant hampering the formation of cellulose hence weak and contaminated plants will be

It depends on where the toxin is being dumped in/onto that concludes whether my plant is a good or bad bioremediator--making it inconclusive. It may work better when it comes to cleaning up toxins from the water, but not as good as it would on land. I don’t have enough results to confirm my claim(but I have enough to support it), so I'll need to conduct more experiments to actually confirm my claim just so that I am thorough. From the data in the graph in the results section, it showed that the Juncea plant with the toxins in the water actually didn’t die and actually grew, but if you look at my plant with the toxins in the soil it ended up dying on day number 12. This made me think: does the Brassica Juncea be a better option to clean up toxins depending where the toxin is dumped on/into.

In the Colorado River in the American Southwest, a solid rocket fuel, ammonium perchlorate, had waste when it is being manufactures and that in causing contamination in drinking water and is also causing contamination in irrigation (water supply to land and crops). This contamination is causing a lot of health problems because the contaminant is being found in vegetables as well. By using microorganisms, perchlorate is being removed from water, since a lot of bacteria need perchlorate to survive and they leave behind harmless chloride

To continue, erosion is also a prominent cause that brings contaminants into watercourses[ix]. Other important toxins that can end up in the water cycle and affect water quality, plants and animal[x] are metal sources found in fertilizers, animal feed and manure, such as the nutrients of copper, zinc, manganese and iron.[xi] Finally, high concentration of nutrient waste, such as domestic sewage effluents, can cause cyanobacteria to expand[xii]. Once water contaminants reach a lake in large concentration, cyanobacteria can suddenly develop and “result in safe water bodies becoming a toxic soup[xiii]”.

Ways in which humans had affected the environment in my area was by dumping drums containing paints and burying paint thinners and many other solvents into the landfill which worsened the grounds and soils of the area. The conditions though in this environment are under control and do not show any high signs of exposures to humans or creatures, meaning they have a low risk of being affected. The only actual organisms that were harmed but only in small portions included shrubs and trees in the wetlands. The site came to be polluted because of the groundwaters underneath the site, which had been contaminated by pollutants leaching from the landfills. Some ways in which we have been attempting to correct this problem was by selecting modified

There are a variety of different sites that have been effectively treated using phytoextraction techniques. These include industrial and municipal landfills, agricultural fields, military bases, fuel storage tank farms, gas stations, army ammunition

IN PARTIAL FULFILLMENT OF THE REQUIREMENT FOR THE AWARD OF MASTER OF SCIENCE (ENVIRONMENTAL CHEMISTRY AND POLLUTION CONTROL)