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All Journal Equilibrium Journal of Chemical Engineering
Sperisa Distantina
ID Scopus: 54880561200, Universitas Sebelas Maret
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology

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Preparation and Flocculation Performance of Polyacrylamide Grafted Banana Stem Cellulose: Effect of Acrylamide and Ammonium Peroxydisulfate Sperisa Distantina; Imanuel Daniel Nainggolan; Yosea Ido Fernando; Mujtahid Kaavessina
Equilibrium Journal of Chemical Engineering Vol 9, No 2 (2025): Volume 9, No 2 December 2025
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v9i2.110187

Abstract

ABSTRACT. Banana stem was identified as an attractive source of cellulose and a promising raw material for developing friendly bioflocculant hydrogels in water treatment. Polyacrylamide grafted banana stem cellulose (BS-g-PAA) was synthesized for flocculation application. The objective of this study was to investigate the effect of ammonium peroxydisulfate (APS) and acrylamide (AA) amount on the grafting efficiency and flocculation performance of obtained BS-g-PAA. In this study, 1 g banana stems flour was mixed in distilled water, followed by the addition of AA at different weight (10, 15, and 20 g) and APS at various weight (0.1, 0.15, and 0.2 g). The mixture was grafted using microwave irradiation at 540 W for 60 s per cycle, repeated for three cycles (total 180 s). The sample was then dried using an oven until constant weight and ground to obtain BS-g-PAA powder. The results of FTIR showed that the successful grafting of acrylamide onto the cellulose backbone. The grafting percentage increased with the increasing of AA amount, from 1,008% at 10 g AA to 2,098% at 20 g AA. Ammonium peroxydisulfate from 0.1 g to 0.2 g increased grafting percentage from 980% to 1,008%. BS-g-PAA hydrogel prepared by 1 g banana stem, 0.2 g APS, and 10 g AA produced the most effective turbidity reduction by reducing the turbidity value from 53.3 NTU of kaolin suspension to a final value of 15.29 NTU after 80 s flocculation test. These results demonstrated that hydrogels derived from banana stems may have promising potential as sustainable bioflocculants for wastewater treatment applications.Keywords:Banana stem, Ammonium peroxydisulfate, Acrylamide, Bioflocculant, Microwave grafting
Bead Gel Preparation from Cassava Baggase Grafted Acrylamide and Carrageenan Sperisa Distantina; Dea Espina Banowati; Laura Hanifa Aprian; Mujtahid Kaavessina
Equilibrium Journal of Chemical Engineering Vol 8, No 2 (2024): Volume 8, No 2 December 2024
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v8i2.85999

Abstract

Abstract. This research intends to prepare bed gels for medium of plant growth. Bead gels were prepared by grafting cassava bagasse by acrylamide with ammonium persulfate (APS) as the initiator using microwave energy. This research aims to examine the effect of the ratio of acrylamide to APS initiator on the swelling capacity. Briefly, cassava bagasse powder 1 g in 80 ml distilled water was mixed with acrylamide and APS to form grafted polimer by applying microwave. The resulted grafted polymer powder then was mixed with carrageenan to create bead gels. The formed bead gel was soaked in distilled water to test the swelling capacity. The highest swelling capacity in this research is 1183.333% at a ratio of 0.1 g APS : 15 g acrylamide and 1213.33% at a ratio of 10 g acrylamide : 0.1 g APS. Therefore, the swelling capacity increases with an increase in the ratio of acrylamide and APS. From the results of swelling capacity and FTIR, it can be concluded that the grafting process of cassava bagasse and acrylamide has been successfully conducted. Keywords:Ammonium persulfate, Bead gel, Grafting microwave, Swelling capacity, Cassava bagasse
Co-Authors Imanuel Daniel Nainggolan Mujtahid Kaavessina Yosea Ido Fernando