[Abstract] Phytoremediation potential of Salvinia molesta D.S. Mitch. and Pistia stratiotes L. for methylene blue decolorization

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Sa Labas ng Classroom (Outside the Classroom)

Myra G. Gahid, RPsy, RPm

96 episodes

5 days ago

Sa Labas ng Classroom features psychology concepts, mental health, research, and life lessons narrated from different perspectives by interesting guests. The podcast was created and inspired by kwentuhan (storytelling) sessions of the host with other people, especially her former students.

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Education

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[Abstract] Phytoremediation potential of Salvinia molesta D.S. Mitch. and Pistia stratiotes L. for methylene blue decolorization

Sa Labas ng Classroom (Outside the Classroom)

22 minutes 27 seconds

1 year ago

[Abstract] Phytoremediation potential of Salvinia molesta D.S. Mitch. and Pistia stratiotes L. for methylene blue decolorization

Methylene blue is one of the most commonly used dyes in several industries. This causes an alarming rate of dye-containing effluents discharged into the environment, affecting humans and the aquatic ecosystem that comes in contact with these pollutants. This study investigated P. stratiotes L. and S. molesta D.S. Mitch. in decolorizing methylene blue (MB). The plants were exposed to four treatments: 10 mg/L, 25 mg/L, 50 mg/L, 100 mg/L for 48 hours. The dye decolorization, pH, and the final relative growth rate of the plants were observed. Samples were extracted at 0, 0.5, 1, 2, 3, 4, 5, 6, 24, and 48 hours to determine its absorbance value at 670 nm. After 48 hours, it was determined that S. molesta D.S. Mitch. decolorized 97.8% of MB at pH 6.4 in a ten mg/L MB solution than P. stratiotes L., removing 80.9% at pH 6.5 of MB in the same treatment solution. However, neither plant sample can grow under increasing concentrations of MB, substantiating the damaging attributes of MB to the environment. Furthermore, S. molesta D.S. Mitch. was used to determine its dye decolorization potential when subjected to MB-contaminated synthetic wastewater (SWW). Results showed that S. molesta D.S. Mitch. decolorized 58.5% of MB at pH 8.5 in ten mg/L of SWW. In addition, its COD was also determined in all SWW samples of S. molesta D.S. Mitch., which was found to exceed the required value of 60-100 mg/L for wastewater discharge pursuant to the DENR DAO 2016-08. This study determined that P. stratiotes L. and S. molesta D.S. Mitch. have phytoremediation potential in decolorizing MB, which works best under low concentrations and suitable conditions.

Keywords: Wastewater, Relative Growth Rate, Absorbance, Chemical Oxygen Demand ---

Connect with the authors:

Mark Andrei L. Arjona

FB: www.facebook.com/andrei.arjona Email: arjonamarkandrei@gmail.com

Marianne Dawn C. Dionson

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Wissel Sam Brondial

FB:facebook.com/profile.php?id=100077275565166 Email: wisselsam.brondial@bicol-u.edu.ph