Tri Suryanti
Faculty of Math. and Natural Science-State University of Jakarta Jl. Rawamangun Muka, Jakarta 13220, Indonesia

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GRAFTING OF CELLULOSIC PALMITATE-METHYL METHACRYLATE BY ELECTRON BEAM IRRADIATION AND CHARACTERIZATION OF THEIR MEMBRANES MECHANICAL PROPERTIES Riswoko, Asep; Suryanti, Tri
Jurnal Sains Materi Indonesia Vol 12, No 2: FEBRUARI 2011
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (333.576 KB) | DOI: 10.17146/jsmi.2011.12.2.4594

Abstract

GRAFTING OF CELLULOSIC PALMITATE-METHYL METHACRYLATE BY ELECTRON BEAM IRRADIATION AND CHARACTERIZATION OF THEIR MEMBRANES MECHANICAL PROPERTIES. A cellulose derivative membrane, cellulosic palmitate, has been modified to give a better mechanical properties of composite membranes. Modification has been carried out by adding methyl methacrylate (MMA) onto cellulosic palmitate with volume ratio 1:1 and then irradiated by electron beam at dosage of 3, 5, 7, 9, and 10 kGy. The best performance of MMA grafted cellulosic membrane was successfully obtained for irradiation dose at 5 kGy which has a tensile strength of 76,92 Kg/cm2 (stronger than that of the original cellulosic palmitate membrane up to 75%). This result is supported by FT-IR spectra which showed that grafting methyl methacrylate onto cellulosic palmitate increased the intensity of absorbance of -CH2- group (1468.47 and 1450.47 cm-1). In addition, there are also strong absorption in region 1068.64 and 1014.56 cm-1 which is absorption for C-O-C (ether linkage) between cellulosic palmitate and methyl methacrylate. X-Ray Diffraction and SEM analysis were also revealed that adding of MMA on cellulosic palmitate affected a degree of crystalline and morphology membrane.
Penurunan Kadar Tss Dan Cod Pada Limbah Cair Industri Batik Dengan Metode Gabungan Koagulasi Dan Adsorbsi Suryanti, Tri; Ambarwati, Diah Ayu; Udyani, Kartika; Purwaningsih, Dian Yanuarita
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2019: Menuju Penerapan Teknologi Terbarukan pada Industri 4.0: Perubahan Industri dan Transformasi P
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (142.539 KB)

Abstract

Salah satu industri yang menghasilkan limbah cair adalah industri batik. Dalam limbah cair industri batikterdapat kandungan berbahaya yang menyebabkan pencemaran lingkungan seperti logam berat, sehinggaperlu diolah agar aman untuk dibuang ke lingkungan. Pengolahan limbah cair industri batik dapat dilakukandengan metode gabungan koagulasi dan adsorbsi. Tujuan dari penelitian ini adalah untuk mengetahuipengaruh penambahan koagulan biji kelor terhadap penurunan COD (Chemical Oxygen Demand) dan TSS(Total Suspended Solid). Penelitian ini dimulai dengan menentukan koagulan terbaik antara koagulan bijikelor dan ekstrak biji kelor. Setelah itu koagulan terbaik digunakan untuk proses koagulasi dengan variabel60 gr, 80 gr, 100 gr, 120 gr, dan 140 gr. Selanjutnya hasil koagulasi diadsorbsi menggunakan karbon aktifsetinggi 25 cm. Pada lapisan bawah kolom digunakan zeolit setinggi 15 cm, kemudian pada atas kolom diisiijuk 15 cm. Setelah adsorbsi selesai sampel limbah yang sudah di-treatment kemudian diuji COD dan TSS.Pada hasil penelitian ini didapat % removal COD dan TSS maksimal pada variabel massa koagulan 60 gr,pada variabel tersebut dihasilkan % removal COD sebesar 85,95% dan % removal TSS sebesar 81,41%