Pengaruh Ion Pengganggu terhadap Adsorpsi Metilen Biru

Mustapa Mustapa(1*),

(1) Jurusan Kimia, Universitas Negeri Manado, Indonesia
(*) Corresponding Author




DOI: https://doi.org/10.35580/chemica.v24i2.56449

Abstract


ABSTRAK

Penelitian ini bertujuan untuk mengetahui pengaruh ion pengganggu pada adsorpsi metilen biru menggunakan polimer bercetakan molekul. Ion pengganggu yang digunakan adalah ion Cd2+ dan Pb2+ dengan konsentrasi masing-masing 0, 10, 20, 30, 40, 50 mg/L. Adsorben polimer bercetakan molekul sebanyak 0,05 g dikontakkan dalam 25 mL campuran larutan metilen biru 100 ppm pada pH larutan 10 selama 60 menit dan larutan ion Cd2+ dan Pb2+ dengan variasi konsentrasi 0 – 50 mg/L. Campuran disentrifugasi kemudian filtratnya ditampung. Konsentrasi metilen biru yang tersisa ditentukan menggunakan spektrofotometer sinar tampak (UV-Vis). Kapasitas adsorpsi metilen biru dengan ion pengganggu Cd2+ konsentrasi 0 – 50 mg/L adalah 42,62 – 38,90 mg/g dan ion pengganggu Pb2+ konsentrasi 0 – 50 mg/L adalah 42,72 – 37,79 mg/g. Semakin besar konsentrasi ion pengganggu Cd2+ dan Pb2+ dalam larutan campuran, semakin kecil kapasitas adsorpsi namun tidak signifikan. Hasil penelitian menunjukkan bahwa semakin besar konsentrasi ion pengganggu, kapasitas adsorpsi metilen biru menggunakan polimer bercetakan molekul cenderung konstan.

Kata Kunci: Polimer Bercetakan Molekul, Metilen Biru, Adsorpsi, Ion Pengganggu.


ABSTRACT

This study aims to determine the effect of interfering ions on the adsorption of methylene blue using molecularly imprinted polymers. The interfering ions used were Cd2+ and Pb2+ ions with concentrations of 0, 10, 20, 30, 40, 50 mg/L, respectively. 0.05 g of molecularly imprinted polymer adsorbent was contacted in 25 mL of a mixture of 100 ppm methylene blue solution at pH 10 for 60 minutes and Cd2+ and Pb2+ ions with concentration variations of 0 – 50 mg/L. The mixture was centrifuged and then the filtrate was collected. The remaining concentration of methylene blue was determined using a visible spectrophotometer (UV-Vis). Methylene blue adsorption capacity with Cd2+ interfering ion concentrations of 0 – 50 mg/L was 42.62 – 38.90 mg/g and Pb2+ interfering ion concentrations of 0 – 50 mg/L was 42.72 – 37.79 mg/g. The greater concentration of interfering ions Cd2+ and Pb2+ in the mixed solution, the lower adsorption capacity but not significantly. The results showed that the greater concentration of interfering ions, the adsorption capacity of methylene blue using molecularly imprinted polymers tended to be constant.

Key Words: Molecularly Imprinted Polymers, Methylene Blue, Adsorption, Interfering Ions.


Full Text:

PDF

References


Hasanah, A. N., Safitri, N., Zulfa, A., Neli, N., & Rahayu, D. (2021). Factors affecting preparation of molecularly imprinted polymer and methods on finding template-monomer interaction as the key of selective properties of the materials. Molecules, 26(18), 5612.

Khan, I., Saeed, K., Zekker, I., Zhang, B., Hendi, A. H., Ahmad, A., Ahmad, S., Zada, N., Ahmad, H., & Shah, L. A. (2022). Review on methylene blue: Its properties, uses, toxicity and photodegradation. Water, 14(2), 242.

Malik, M. I., Shaikh, H., Mustafa, G., & Bhanger, M. I. (2019). Recent Applications of Molecularly Imprinted Polymers in Analytical Chemistry. Separation & Purification Reviews, 48(3), 179–219. https://doi.org/10.1080/15422119.2018.1457541

Ndunda, E. N. (2020). Molecularly imprinted polymers—A closer look at the control polymer used in determining the imprinting effect: A mini review. Journal of Molecular Recognition, 33(11), e2855. https://doi.org/10.1002/jmr.2855

Wu, H., Lin, G., Liu, C., Chu, S., Mo, C., & Liu, X. (2022). Progress and challenges in molecularly imprinted polymers for adsorption of heavy metal ions from wastewater. Trends in Environmental Analytical Chemistry, e00178.

Yao, X., Ji, L., Guo, J., Ge, S., Lu, W., Cai, L., Wang, Y., Song, W., & Zhang, H. (2020). Magnetic activated biochar nanocomposites derived from wakame and its application in methylene blue adsorption. Bioresource Technology, 302, 122842.


Article Metrics

Abstract view : 62 times | PDF view : 7 times

Refbacks

  • There are currently no refbacks.


ISSN: 2722-8649

Diterbitkan oleh Jurusan Kimia FMIPA Universitas Negeri Makassar (UNM) dua kali dalam setahun yaitu bulan Juni dan Desember.

Alamat Redaksi :Jurusan Kimia, Fakultas MIPA UNM, JL. Dg. Tata Parangtambung, Makassar 90224 Indonesia, Telp. 0411-840295; Fax: 0411840295;E-mail : [email protected]