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All Journal JURNAL INTEGRASI PROSES Communications in Science and Technology
Ikhsan Firdaus
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PENGARUH PENAMBAHAN SELULOSA DARI TANAMAN ECENG GONDOK (Eichornia crassipes) DALAM PEMBUATAN BIOPOLIMER SUPERABSORBEN Heri Heriyanto; Ikhsan Firdaus; Ana Fadilah Destiani
JURNAL INTEGRASI PROSES VOLUME 5 NOMOR 2 Juni 2015
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (737.413 KB) | DOI: 10.36055/jip.v5i2.203

Abstract

Polimer superabsorben (Superabsorbent Polymer/SAP) adalah suatu bahan yang dapat mengabsorpsi dan menyimpan cairan lebih dari berat bahannya. Penelitian ini bertujuan untuk mengetahui pengaruh rasio penambahan selulosa terhadap sifat fisik dan daya absorbsi produk biopolimer superabsorben dan mengetahui pengaruh penambahan zat aditif crosslink terhadap kualitas polimer superabsorben berbasis selulosa. Pembuatan polimer superbsorben dilakukan dengan memvariasikan persentase penambahan selulosa 0%; 10%; 20%; 30% dan 40%, variasi penambahan cross linker agent pada polimerisasi yaitu 0 ml, 0,7 ml dan 1,4 ml larutan Formalin. Pengukuran kapasitas absorbsi air, nilai pengujian rasio swelling superabsorben dalam larutan urea dan pengujian rasio swelling superabsorben dalam larutan NaCl digunakan untuk menentukan karakteristik superabsorben yang disintesis. Hasil penelitian menunjukkan polimer superabsorben yang dihasilkan dengan penambahan selulosa memiliki karakteristik yang lebih baik dibandingkan poliakrilamida yang disintesis. Polimer superabsorben dengan rasio 10% berat selulosa terhadap berat superabsorben mempunyai nilai kapasitas absorbsi sebesar 2,8 g air/g superabsorben, rasio swelling pada larutan Urea 5% sebesar 3,78 dan rasio swelling dalam larutan NaCl 0,15 M sebesar 3,8. Pengaruh penambahan Formalin sebanyak 0,7 ml memberikan hasil nilai rata-rata kapasitas absorbsi, rasio swelling pada larutan urea 5% dan rasio swelling dalam larutan NaCl 0,15 M yang lebih besar.
Potential of silica from water treatment sludge modified with chitosan for Pb(II) and color adsorption in sasirangan waste solution Wicakso, Doni Rahmat; Mirwan, Agus; Agustin, Era; Nopembriani, Nova Fitria; Firdaus, Ikhsan; Fadillah, Muhammad
Communications in Science and Technology Vol 7 No 2 (2022)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.7.2.2022.1041

Abstract

Water treatment sludge (WTS) still contains a lot of silica oxide (SiO2) as much as 43.12-66.90% by weight and can act as an adsorbent to be applied to the treatment of Sasirangan wastewater. Silica extraction from WTS was carried out by microwave-assisted leaching, which - compared to conventional extraction - had several advantages including high extraction yields, fast, uniform, and more selective processing time. In addition, Sasirangan liquid waste is a by-product of the dyeing process of Sasirangan cloth, which still contains heavy metals in amounts exceeding the quality standard. This study aims to extract silica from WTS by microwave-assisted leaching process to synthesize silica modified by chitosan (Si-Kit) as an adsorbent to reduce Pb(II) from Sasirangan wastewater, and to obtain a kinetic model of the adsorption process. The silica from microwave-assisted leaching process (Si-MaL) and Si-Kit adsorbents were characterized using FTIR and SEM. The results showed that the dominant functional groups of Si-Kit included Si-O-Si, Si-O-C stretching vibrations, and stretching vibration of C=N showing that the condensation between aldehyde groups and amino groups occurred to form base after the addition of glutaraldehyde. The SEM images showed that Si-MaL and Si-Kit adsorbent obviously increased in particle size with the presence of visible particles of homogeneous granules and large pores. The removal efficiency percentage of Pb(II) and color occurred at 6% w/v adsorbent weight and 70 min was 87.20% and 61.87% respectively. Meanwhile, the adsorption kinetics of Pb(II) and color followed the zero order kinetics model at weight variation of 6%-w/v based on the value of R2 close to one and the adsorption capacity of Pb(II) ion and color were 12.01 mg g-1 and 467 mg g-1, respectively.
Co-Authors Agus Mirwan Agustin, Era Ana Fadilah Destiani Doni Rahmat Wicakso Fadillah, Muhammad Heri Heriyanto Nopembriani, Nova Fitria