Biodegradation By Fenton Reaction Lab Report

Better Essays
Phenols Degradation by Fenton Reaction in the Presence of Chlorides and Sulfates

Siedlecka et al. (2005) also studied a series of phenol compounds present in wastewater. These compounds, as mentioned above, are widely used therefore are commonly found in wastewater derived from different industries such as petrochemical, food or resin manufactured.
Since common biological treatment for these kinds of compounds is not feasible, is important to develop new technologies to treat these recalcitrant molecules.
In this paper the authors studied the influence of chloride and sulfate anions on Fenton’s reaction of three representative phenol compounds: phenol, 2-chloro- and 2-nitrophenol.
The batch experiments were carried out with the phenol solution in
…show more content…
In conclusion, the authors found that chloride and sulfate anions influenced in the degradation rates of phenol, 2-chloro- and 2-nitrophenol under Fenton reactions. However, the chloride anion has a higher affectation in these systems. In the case of 2-chlorophenol the degradation rates are slower because the presence of additional chloride radicals from the abstraction reactions as mentioned above.
Lastly, chlorides and sulfates influence the biodegradation of phenolic compounds in a different way: biodegradability of phenol is improved by chloride and for 2-nitrophenol and 2-chlorophenol by sulfates.

Conclusion

As it can be seen, the examples of Fenton and photo- Fenton process applications, agree and confirm the theory explanations of these processes. Based on this, the parameters can be identified and establish a range for optimal conditions of operation or identify the possible effects of the parameters in the process. For example, the application of Fenton process (for different kind of pollutants) confirms that the optimal pH is around 3, as was discussed in the review

Related Documents

  • Decent Essays

    The influence of selected variables such as pH of phenol solution, concentration of hydrogen peroxide, concentration and the volume of phenol to be treated was studied to find the degree on the degradation of phenol. The influence of these variables on the degradation of phenol using H2O2 by interpreting the TOC results is presented in the following sections. 3.1 Effect of pH The phenol degradation with different pH is shown in Figure 3. As it is clearly seen, a higher pH favors the removal of phenol in altered conditions. In Figure 3(a), the phenol was purged in ozone in absence of hydrogen peroxide.…

    • 860 Words
    • 4 Pages
    Decent Essays
  • Decent Essays

    This is achieved through the existence of the equilibrium HA (aq) ⇄ H+ (aq) + A- (aq). When a strong acid or alkali is added the equilibrium shifts to the right or the left adhering to Le Châtelier 's principle, which states that whenever an equilibrium is subject to change of concentration, temperature, volume, or pressure, the system will readjust itself to some extent, to counteract the effect of the change. This means that if a strong acid is introduced to a buffer, the hydrogen ion concentration would increase by less than the amount expected. This is because adding H+ ions lowers the pH which shifts the equilibrium to the left, thus lowering the H+ ion concentration raising the…

    • 1043 Words
    • 4 Pages
    Decent Essays
  • Decent Essays

    Ionic Reaction Lab Report

    • 834 Words
    • 4 Pages

    So in this experiment we will observe the effect of concentration on the conductivity, by taking readings of the same solution at different concentrations. The charge of the ions also has an effect on the conductivity of the solution. Different charges result in different stoichiometry with different compounds. Take for example a 1.0 M solution of HCl. In this compound the two ions that make this up are: H+ and Cl-.…

    • 834 Words
    • 4 Pages
    Decent Essays
  • Decent Essays

    Solubility Test Lab Report

    • 1305 Words
    • 6 Pages

    Many issues today are caused by pollution or contamination through inorganic compounds so it is imperative that scientists and researchers known how to physically and chemically identify these substances. The testing of inorganic substances to determine the chemical makeup is present in many different types of research. Monthon Thanutamoayong is a scientific researcher who focused on the identification of inorganic pollutants in drinking water through nanofiltration. Through this type of testing, the rejection of certain organic and inorganic compounds is described regarding their size exclusion and electrostatic effect. (Thanutamoayong, 2002).…

    • 1305 Words
    • 6 Pages
    Decent Essays
  • Decent Essays

    The charges between the sodium chloride and the water interact leading to a phenomenon known as solvolysis where the solute is interacting with the solvent molecules too much to reassociate to each other5. So, the sodium chloride molecules are interacting so much with the water molecules that they do not reassociate as table salt. In the case of the extraction, the different salts were soluble in water due to this phenomenon and why extraction works because salts are produced as a byproduct of acid-base…

    • 1718 Words
    • 7 Pages
    Decent Essays
  • Decent Essays

    Structure Of Isotinamide

    • 1274 Words
    • 6 Pages

    2012) established the relationship between solvent and polymorph nucleation in Isonicotinamide. Three (3) forms of Isonicotinamide (I, II and IV) were crystalized using solvents such as nitrobenzene, acetone, nitromethane, methanol, ethanol, 2-propanol, dioxane and chloroform. It was found that the hydrogen bonding behaviour of Isonicotinamide is of interest since different polymorphs exhibited different hydrogen bonding and molecular…

    • 1274 Words
    • 6 Pages
    Decent Essays
  • Decent Essays

    Stoichiometry Lab Report

    • 1098 Words
    • 5 Pages

    The purpose of this experiment was to evaluate the stoichiometric relationship between the testing agents and to identify the products formed. The relationship was found by completing three acid and base neutralization reactions using phosphoric acid, which is a triprotic acid, with different volumes of sodium hydroxide. Introduction When looking at the coefficient of balanced equations, stoichiometry is seen. Coefficients represent the number of moles, equivalent to the mass of an atom, of the products and reactants. Stoichiometry was demonstrated in this experiment to determine the relationship between the testing agents.…

    • 1098 Words
    • 5 Pages
    Decent Essays
  • Decent Essays

    The hydrophobic molecules in the polar mobile phase show more affinity to the hydrophobic stationary phase and these molecules can be eluted from the column by decreasing the polarity of the mobile phase for reducing hydrophobic interactions. The more hydrophobic molecule will be strongly bound to the stationary phase and the concentration of organic solvent required to elute the molecule will be higher. Hence buffer concentrations of 10 and 20 % were selected…

    • 1547 Words
    • 7 Pages
    Decent Essays
  • Decent Essays

    Also, the hydrocarbon reaction of terminal alkenes gives mixtures of primary and secondary boranes that formed in an exothermic biomolecular step. Carpenter, et al study outlined of reactive intermediate. They mentioned that the assumptions about the behavior reactive intermediate. The first one…

    • 1102 Words
    • 5 Pages
    Decent Essays
  • Decent Essays

    There is a reaction whose products are water and salt (and a gas – carbon dioxide). The reaction is as follows: X + 2HCL = H2O + CO2 + salt (metal of X+CL2). Due to the reason that this reaction needs two chloride molecules, the electrical charge of the metal of compound X should be +2. A number of sources show that therefore, compound X is calcium carbonate…

    • 1145 Words
    • 5 Pages
    Decent Essays