Adsorbent Case Study
Rhizofiltration - It is an emerging environmental cleanup technology where absorbtion, concentration, and precipitation of wide range of organic and inorganic contaminants take place from groundwater with the help of plant roots. Roots of many hydroponic grown terrestrial plants, e.g., Indian mustard, , sunflower, and various grasses, effectively removed toxic metals such as Cu2+, Cd2+, Ni2+, Pb2+, and Zn2+ from aqueous solutions. The plants with stable root systems are supplied with contaminated water to adapt the plants and then shifted to the polluted site to gather the toxicants, and once the roots are drenched, they are harvested. It is an in-situ technique, which minimizes the disturbance to the environment.4
3.2.1.2. Remediation of
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crassipes having concentration 10 mg/l, the adsorption percent reaches 93% using 2.5 g of adsorbent in the case of Pb2+, though 3.0 g of adsorbent was required in case of Cd2+ and 1.5 g adsorbent was used for maximum adsorption of 82% for Cr6+ ion and for 75% adsorption, 4 g of adsorbent was required by Zn2+ ions. However, at concentrations 50 mg/l of Cr6+, Pb2+, Cd2+ and Zn2+ the percent adsorption was low for low quantity of adsorbent and reaches a maximum of 98-99% when 3.0-4.0 g of adsorbent was employed. On the contrary, in case of C. indica using 2.5 g of adsorbent, the percent adsorption reaches a value of 84% for Pb2+, though, with 3.5 g of adsorbent 92% adsorption was observed in case of Cd2+ and 1.5 g adsorbent was used for Cr6+ ion with maximum adsorption of 70% and 3.0 g of adsorbent was required by Zn2+ ions to reach the adsorption of 42%. Much higher quantity of adsorbent was required in case of 100 mg/l multiple species …show more content…
It refers floral or faunal community of microorganisms which includes different algae, fungi, bacteria, protozoa etc. Periphyton accumulate on dead/living substrate like sand, clay particles, rocks, algae, and animal bodies and are found in all water bodies. They are found to be highly efficient to remove COD, UV254 nm matter, Cu, Fe, Zn, P, and N.7
Periphyton biofilm carries out the sorption of nitrogen like nutrients present in the form of nitrates or nitrites by the processes autotrophic nitrification and heterotrophic denitrification. Another major concern is the removal of phosphorus responsible for the growth of algal blooms. Periphyton biofilms consisting of bacilli and cocci have been explored for the decrease in total dissolved phosphorus and total phosphorus concentrations in the overlying water.
A novel strategy where periphyton biofilms are fixed in a reactor is employed for the treatment of wastewater containing phenolic compounds. For example biofilm reactor consisting of immobilized bacteria on a Ti electrode removes phenol and COD at a rate of 100% (18 h) and 80% (16 h) respectively.8 Phenols can also be removed efficiently by the bacterium PD12 strain, Fungi strains (Graphium spp. and Fusarium spp.), Yeast C. tropicalis and planktonics Pseudomonas
Procion Red Dye Lab Report
1454 Words | 6 PagesFor this lab, zeolite and magnetized zeolite were synthesized and compared with charcoal to find out with would be the most effective in the sequestering of Procion Red dye. Finding the concentration and absorbance of each zeolite, magnetized zeolite, and charcoal, along with a calibration curve, the best adsorbent is determined. Charcoal was the overall best sequestration of the Procion Red dye, since the adsorbent was highest compared to the others. Introduction Pollution has increased in the environment over the years, so the purpose of this experiment is to find the best adsorbent of chemicals to reduce the pollution.
Plankton Activity Postlab, Questions And Answers
989 Words | 4 PagesPlankton Activity Postlab 1) Apply 2.5: Use mathematical and/or computational representations to support explanations of factors that affect carrying capacity of ecosystems at different scales. Explain how the abundance of phytoplankton in the pond depends on the abundance of an abiotic resource such as nitrogen. - Phytoplankton are the producers in the pond. Species of organisms in ecosystems have their own carrying capacity relative to other species, and carrying capacities are determined by particular abiotic and biotic resources in an ecosystem. An increase in nitrogen levels in the pond (e.g. from fertilizers) will result in a dramatic increase in phytoplankton levels, but once phytoplankton population reaches its carrying capacity (determined by availability of other resources besides nitrogen, [DO] levels, predation etc.),
Nt1310 Unit 2 Term Paper
442 Words | 2 PagesAccording to Harrison Eutrophication is the excessive production of algae and higher plants through the enrichment of waters by nitrogen and phosphorus. Phosphorus in the form of phosphate is the limiting nutrient as the amount of biologically available phosphorus is small in relation to the amount needed for algal growth. Harrison states that sources of nutrients can be discrete, (sewage), or diffuse, (farmland fertilizers).
Conodoguinet Creek Field Observation Report
842 Words | 4 PagesEutrophication is the excessive nutrients in a lake or body of water, frequently due to runoff from the land, which causes a dense growth of a plant life and death of animal life from lack of oxygen. We tested for phosphate, nitrate, and dissolved oxygen. Phosphates and Nitrates are found in fertilizers, laundry detergents, and sewage treatments. Dissolved oxygen is microscopic bubbles of gaseous oxygen that are mixed in water and aailable to aquatic organisms for respiration. We found that there was a phosphate average of 0.1 parts per million (ppm).
Sci201 Unit 1
391 Words | 2 PagesEnvironmental Science and Sustainability (SCI201 -1504A -07) Instructor: Trena Woolridge Unit 4- Discussion Board Amanda Kranning October 27, 2015 Eutrophication is a syndrome of ecosystem responses to human activities that fertilize water bodies with nitrogen (N) and phosphorus (P), often leading to changes in animal and plant populations and degradation of water and habitat quality.(Cloern, Krantz, & Hogan, 2013) Eutrophication forms when an abundance of nitrogen and phosphorus increases growth within an environment.
Conodoguinet Creek Pollution
1455 Words | 6 Pagesphosphates and nitrates ) - which is when fertilizers < such as those on farms > can seep through the soil or even run down the soil - called runoff - into the creek causing the water to have more nutrients than it should. ) Depending on how much pollution there is depends on how much algae there is ( the more eutrophication -there is the more nutrients in the water- results in how much algae there will be.) We were also testing on the pH scale ( which measures the acidity or alkalinity of water ) goes from 0 - 14 where 6 - 0 is higher acidity and 8 - 14 is higher alkalinity ( alkalinity is what neutralizes/destroys acid. ) 7 on the pH scale is neutral and that is the ideal water for the ecosystem. The pollution that we were testing for is where the acid came from to begin with.
The Omnivore's Dilemma By Michael Pollan
1217 Words | 5 PagesWhen concerning our drinking water it should be considered that pathogenic organisms may contaminate soil, as well as stick on to the sediments in the surrounding area; making it more tricky to clear completely. Nitrate poisoning is another large concern,
San Joaquin Valley Water Pollution Essay
457 Words | 2 PagesFarmers began to grow their crops in San Joaquin Valley for more than 100 years. Farms in the valley produce mostly vegetables, fruits, nuts, and dairy and they are the main manufacturers in international markets and major suppliers in the United States (Hanak & Arnold, 2017). Farmers are using polluted groundwater to grow their crops and harming the environment by drying rivers and causing people to get health problems. The reason that there are pesticides in nitrates in groundwater in San Joaquin Valley may be the fact that there is a long history of farming and irrigation and generally permeable sediments (Burow & Dubrowvsky, 2014). The first organization that noticed the growth of nitrates in groundwater is the Regional Aquifier System Analyses Program.
Algae Growth Lab Report
843 Words | 4 PagesThe purpose of this lab was to test the effect of pollution on algae growth. Through a series of experiments that lasted a month, four of the six hypotheses were proven to be correct or partially correct. The first hypothesis stated that if 0.5 mL of salt was added to algae, then the algae would grow slower than the positive control. This was proven correct, as shown by the difference of the data from the positive control and the container with 0.5 mL of salt in it.
Acetylsalicylic Acid Synthesis Lab Report
704 Words | 3 PagesThe powder on the filter paper could've fell and this caused it to have a smaller percent purity, percent yield and also cause a lower absorbance and concentration of pure ASA. Another error would be not using a properly dried sample for the pure ASA in part C when making the crystals, this could have cause tye percent yield error. This would make a lower melting point. To prevent this from occurring next time there could be a dry sample that is completely dry and this would not alter the mass of the sample and this would make the solution have a more
Water Quality In The Chesapeake Bay
412 Words | 2 PagesTo those residing on the eastern coast near Maryland, Virginia, and Pennsylvania, the problem of the Chesapeake Bay is obvious. The bay lacks water clarity, has difficulties sustaining aquatic life, and faces population threatening issues like dead zones and algae blooms. There are a myriad of ways in which the bay is polluted, however the most direct link to the bay’s poor water clarity is the overflowing amounts of nutrient and sediment pollution. Bay clarity is crucial, not only for a pretty appearance, but also for the health of the bay grasses and fish living in the bay.
Conodoguinet Creek Research Paper
1063 Words | 5 PagesEutrophication, which is excessive richness of nutrients in any form of body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen, is another reason why the creek could be polluted. Fertilizers are used in farming to provide crops with nutrients, but they also play a big role in the Eutrophication process. If too much fertilizer is used, it leaches from the soil in
U-High Creek Water Quality
657 Words | 3 PagesThere, the algae in the water will use these substances to grow rapidly, and there will eventually be a high concentration of algae in the water. When the algae eventually dies, it is broken down by bacteria, which multiply and use up all of the oxygen
Stoichiometry Lab
563 Words | 3 PagesFirstly, because the NaHCO3 compound was not stored in a sealed container, therefore dust particles could have changed the results, and making the product impure. Also, there are uncertainties associated with the instruments used in this experiment. This, if the products were measured slightly more than should be, this could have affected the concentrations of the solutions, and therefore causing a larger
Wasteland Reaction Paper
1283 Words | 6 PagesWasteland is a documentary by Lucy Walker that depicts the lives of selected garbage pickers in Jardim Gramacho – a massive dumpsite found in the outskirts of Rio de Janeiro. The film is about Vik Muniz’s 2-year journey back to his home country seeking to give back to an impoverished community through making images out of an unusual material – trash. The film featured 7 garbage pickers from the landfill, and each has a story that brought them to their current places. One unique thing about the whole creative process is that the pickers themselves became part of it. Vik imagined that as they work on their own and each other’s images, the pickers will not only show themselves to a broader world that is for now comfortably oblivious of their existence, but also see themselves differently (Fuchs, 2010).
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