Sintesis Kopolimer Gel Berbasis NIPAM (N-isopropylacrylamide), Kitosan dan Asam Akrilat Sebagai Adsorben Limbah Elektroplating

Eva Oktavia Ningrum, Gloria Eudia Gogani, Luthfiya Ayu Wardani, Muhniatul Maghfiroh, Naufal Mahdi

Abstract


Indonesia is one of the worst countries in Asia in terms of wastewater treatment which results in environmental pollution. One of the factors is the electroplating industry that produces heavy metal waste. One of the heavy metal wastes from electroplating is chromium metal that become a threat to humans and the environment because it can cause acute poisoning, accumulated in the human body and damage the ecosystem. One of the methods used to regenerate heavy metal waste is by employing zwitterionic betaine gel. However, this method has its disadvantages with the presence of intra-intrachain associations that inhibit the ionic group's ability to adsorb ions by the charge group interaction.

This study aimed to improve the gel adsorption ability by reducing the association of intra-intrachain copolymers through separately synthesis the anionic gel (NIPAM-co-acrylic acid) and cationic gel (NIPAM-co-chitosan). NIPAM-co-chitosan and NIPAM-co-acrylic acid gels were synthesized through polymerization reactions using N,N,N',N'-tetramethylethylenediamine (TEMED) as accelerators and N,N'-methylenebisacrylamide (MBAA) as a crosslinker. Innitially TEMED, MBAA, NIPAM and chitosan or acrylic acid were mixed in distillated water with a total volume of 100 ml. The solution was stirred for 10 minutes, purged with N2 gas with a flowrate of 500 ml/min in four neck flask at 10 oC. Ammonium peroxodisulfate (APS) was then added into solution. The polymerization reaction occurred for 6 hours. In this study the adsorption/desorption of metal ions by pH-thermosensitive gel are investigated in various pH, and weight balance between NIPAM-co-anionic and NIPAM-co-cationic gel. The effects of the temperature and the conditions employed in the preparation of the gel, i.e., monomer concentration on the extent of adsorption of metal ions on the gel were also elucidated. The adsorption and desorption behavior of the gel is discussed by considering the swelling degree of the gel as well as the transition temperature of poly(NIPAM-co-chitosan) and poly(NIPAM-co-acrylic acid).

Based on the results of FTIR analysis, the vinyl groups peak of the copolymer gel decreased compared with that of its constituent monomers. It can be concluded that the synthesis of copolymers was successful. While based on the swelling degree test using an electroploting waste solution, the higher the temperature of the solution, the lower the swelling degree of the gel. Moreover, gel porous occurred because of the higher synthesis temperature.


Keywords


gel, adsorption, NIPAM, chitosan, acrylic acid

Full Text:

PDF (Indonesian)

References


Bagus A dan Chynintya G.2018. “Sintesis dan karakterisasi kopolimer berbasis zwitterionic sulfobetaine dan thermosensitive dalam larutan ionik”.Skripsi. Teknik Kimia, Institut Teknologi Sepuluh Nopember.

Barakat, M. (2010). New trends in removing heavy metals fromindustrial waste water.

Crini, G. (2004). Recent developments in polysaccharide-based materials used as adsorbents in wastewater treatment.

Gao , Y., Lee, K., Oshima, M., Motomizu, S. (2000) Adsorption behavior of metal ions on cross-linked chitosan and the determination of oxoanions after pretreatment with a chitosan column. Anal. Sci, 16 :1303–1308.

Hirokawa Y dan Toyoichi Tanaka. 1984. “Volume phase transition in a nonionic gel”.J.Chem.Phys.Vol 81, hal 71-73.

I. G. Wenten, Khoiruddin, P. T. P. Aryanti, A. N. Hakim, 2010, Pengantar teknologi membran, Teknik Kimia Institut Teknologi Bandung.

Keenan, Charles.W, and Kleinfelter, Donald.C, and Wood, Jesse.H,: Pudjaatmaka, A.H, 1993, Kimia untuk universitas, Edisi Keenam, Erlangga, Jakarta

Kudaibergenov, Sarkyt. 2006. “Polymer Betaine : Syntesis, characterization, and application”. Advance Polimer Science. Hal 157-218.

Palar, H. 1994. Pencemaran dan toksikologi logam berat. Jakarta : Rineka Cipta.

Rubio J, Sauza ML, Smith RW. 2001. “Overview of flotation as a wastewater treatment technique”. Minerals Engineering. Vol.15, hal 135-155.

Salamone JC, Volksen W, Olson AP, Israel SC. 1978. “Aqueous solution properties of a poly(vinyl imidazolium sulphobetaine)”. Polymer. Vol.19, hal 1157–62.


Refbacks

  • There are currently no refbacks.