Activated Point-Of-Use Water Filters

In this reaction, in the compound AgNO3 , silver (Ag) will be replaced by copper (Cu) which will result in the compound which will be the aqueous excess. Whereas silver (Ag) will then stand alone and become the product, as nitrate is the limiting reactant.

and Cl - . If Ag + was present instead, then the solution would have consisted of silver chloride

For example, silver nitrate formed a white precipitate when it was tested with ammonium chloride. In contrast, unknown 3 did not formed any precipitate with ammonium chloride. Ammonium chloride change the color of unknown 3 to a light green while the solution of silver nitrate and ammonium chloride was cloudy white solution. Likewise, the metal in unknown 3 could have been Calcium neither. Data and observation shows that calcium nitrate whether formed a white precipitate or did not react at all while unknown 3 formed an orange precipitate. Therefore, silver and calcium are not the two metal present in unknown

The filter that cleans out the dirt from the water uses technology coconut based carbon. They work together to remove bad taste and smell of the things that were in the water and harmful substances. The Brita filter removes zinc, cadmium, chlorine, Copper, and Mercury, which all harmful to the human body. All of those can cause vomiting, nausea, liver damage, kidney damage, etc. The Brita filter cleans out tap water; it takes out the chlorine and other substances harmful to the body.

The unknown contained silver, as both the unknown and silver solutions turned red and formed red precipitates with the addition of potassium chromate.

The basis of this experiment was to test how different contaminates effect ground water when absorbed. The results were surprising as that I felt any additives would immediately change the entire break up and color of the water. What was most surprising to me was that filtering vinegar through ground water it came out relatively clean. I also believed that when filtered all of the water would have large traces of dirt, but that was not the case with the vinegar. This means that there are still viable ways to filter and purify water.

the  solution was recorded.  The  first test  performed was  an  Anion Elimination Test,  the Silver  Nitrate

The first stage involves the removal of solid and liquid particles through filtration. Sydney Water mainly uses ferric chloride to prevent the recurrence of murky water. They also use small amounts of long chain polymers (polyelectrolyte) as a secondary coagulant. It is then followed by the inactivation of microorganisms; to which all monitored filtering plants uses a strong oxidant for disinfection (in Sydney Water, chlorine is used). The last stage involves the addition of fluoride to the water to fulfil the requirements of the Fluoridation of Public Water Supplies Act 1957. This, along with the added lime and carbon dioxide, reduces the corrosivity of

How would you prove the silver nitrate is present in your system of copper pipes? The presence of silver nitrate (AgNO3) in your water system can be proven by taking a sample of water from your system and adding sodium chloride (NaCl). The reaction that would occur from adding sodium chloride to silver nitrate would form a precipitate, as seen below. The chemical formula for this reaction is:

In the first trial, the previously yellow potassium chromate turned red, indicating the presence of silver chromate. The silver chromate has settled in the silver nitrate that was not used in the reaction.

D. You suspect dissolved silver ions in a solution. How would you test this solution to confirm the presence of the silver ions?

Majority of the experiment was conducted in a lighted area and this does not allow for a 100% reaction. Silver nitrate responds to light causing it to change its properities. It was important for students to quickly conduct the portions of the lab where silver nitrate was used. If not, then a less than 100% reaction would occur. It was also important for students to keep the silver nitrate in a dark area until needed.

Activated charcoal works well for decolorizing a solution because it is composed of carbon, and

Impurities can be removed by adding charcoal to the solution and hot gravity filtration. Adding charcoal provides a charged surface that is able to absorb impurities. The impurities that were absorbed by the charcoal were trapped in the filter paper during hot gravity filtration. Hot gravity filtration is the process by which the solution is filtered while on top of a heat source, such as a steam bath. This will remove any insoluble impurities (like charcoal used to remove the methyl orange) from the solution while maintaining the high temperature and high solubility coefficient of the solution. This prevents the solid from crystallizing from the solution while within the filtering apparatus.

The second step of water treatment process is aeration. At the aerator, raw water is mixed with air. The aeration process helps to provide oxygen to the raw water which is needed for the oxidation process of dissolved iron and manganese in order for it to precipitate and therefore enables its removal through filtration (SAJ Holdings Sdn Bhd., n.d.). Wormleaton and Tsang (2000) stated that for water treatment process and also natural streams, it is essential to maintain a high amount of dissolved oxygen. Aeration also provides the escape of dissolved gases, such as carbon dioxide and hydrogen sulphide to reduce the corrosiveness of water, thus controls the tastes and odors of the water (Shun, 2007). Groundwater with high dissolved carbon dioxide levels or high concentrations of iron and manganese commonly require aeration as well as water drawn from reservoirs that is low in dissolved oxygen.