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All Journal Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan JURNAL INTEGRASI PROSES Journal Of Chemical Process Engineering (JCPE) Jurnal Teknik Kimia Indonesia
Lia Lismeri
Universitas Lampung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Engineering Medicine & Pharmacology Other

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Peningkatan Kuat Tarik Bioplastik dengan Filler Microfibrillated Cellulose dari Batang Sorgum Yuli Darni; Lia Lismeri; Muhammad Hanif; Sarkowi Sarkowi; Dita Synthauli Evaniya
Jurnal Teknik Kimia Indonesia Vol 18, No 2 (2019)
Publisher : ASOSIASI PENDIDIKAN TINGGI TEKNIK KIMIA INDONESIA (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jtki.2019.18.2.1

Abstract

Abstrak. Penelitian ini membahas tentang pengaruh rasio pati terhadap kitosan (dalam basis berat) dan konsentrasi microfibrillated cellulose sebagai filler dalam pembuatan bioplastik menggunakan pati sorgum, kitosan dan gliserol. Dalam penelitian ini, rasio pati terhadap kitosan yang divariasikan adalah 10:0, 9,5:0,5, 8,5:1,5, 7,5:2,5, 6,5:3,5, 5,5:4,5 (gr/gr). Microfibrillated cellulose sebagai filler disintesis dari batang sorgum dengan metode semimekanis. Perlakuan kimia diawali dengan delignifikasi batang sorgum dengan KOH 4% pada temperatur 80oC selama 1 jam untuk menghilangkan lignin. Setelah itu dicuci dan dipucatkan (bleaching) sebanyak dua kali menggunakan H2O2 6% pada suhu 70oC. Serbuk batang sorgum yang sudah kering dilanjutkan dengan perlakuan mekanis yaitu dimasukkan ke dalam disk mill  selama 90 menit dan dilanjutkan dengan high energy milling (HEM) untuk mengecilkan ukurannya sampai dengan rata-rata 4-8 µm. Filler ditambahkan, dan konsentrasinya (dalam basis berat) divariasikan dari 0, 1, 2, dan 3 %. Pati dan kitosan berukuran 63 mikron (lolos ayakan), waktu  pengadukan selama 35 menit pada kecepatan 375 rpm, dan penambahan 10% berat gliserol sebagai plasticizer dijaga konstan. Hasil terbaik pada penelitian ini diperoleh pada formulasi 8,5:1,5 (gr/gr). dan konsentrasi filler 3%. Produk bioplastik ini memiliki kuat tarik 11,64 MPa, persen perpanjangan 10,98%, modulus Young 105,96 MPa, densitas 0,915 gr/ml, dan penyerapan air  38,3%. Kata kunci: bioplastik, gliserol, kitosan, microfibrillated cellulose, sorgum. Abstract. The Improving of Bioplastic Tensile Strength with Microfibrillated Cellulose Filler from Sorghum Stem. This study discusses the effect of starch on chitosan ratio (in weight basis) and also the concentration of microfibrillated cellulose as a filler in the preparation of bioplastics using sorghum starch, chitosan, and glycerol. In this study, the ratio of starch to chitosan varied was 10:0, 9.5:0.5, 8.5:1.5, 7.5:2.5, 6.5:3.5, 5.5:4,5 (gr/gr). Microfibrillated cellulose as filler was encouraged from the sorghum stem by the semi-mechanical method. The delignification of sorghum stem initiated chemical treatment with a 4% KOH solution on 80oC for 1 hour to remove lignin. Bleaching is done after delignification using 6% H2O2 at 70oC. The dried sorghum powder is further followed by mechanical treatment that is put into disk mill for 90 minutes and continued with high energy milling (HEM) to reduce its size to an average of 4-8 µm. The filler is added, and the concentration (on a weight basis) varies from 0, 1, 2, and 3%. Starch and chitosan measuring 63 microns (sieve pass), stirring time for 35 minutes at a speed of 375 rpm, and the addition of 10% by weight of glycerol as a plasticizer is kept constant. The best results in this study were obtained in formulations 8.5:1.5 (gr/gr) and 3% filler concentration. This bioplastic product has 11.64 MPa tensile strength, 10.98% elongation, 105.96 MPa Young moduli, 0.915 gr/ml density, and 38.3% water uptake. Keywords: bioplastic, chitosan, glycerol, microfibrillated cellulose, sorghum.Graphical Abstract 
PENINGKATAN NILAI EKONOMIS LIMBAH PRODUKSI JAMUR MERANG MENJADI BRIKET SEBAGAI SUMBER ENERGI ALTERNATIF DI DESA BAYUR KECAMATAN RAJABASA yuli darni; Herti Utami; Darmansyah Darmansyah; Lia Lismeri; Nandi Haerudin
Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Vol 4 No 1 (2020)
Publisher : Lembaga Penelitian dan Pengabdian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jss.v4i1.159

Abstract

The paddy straw mushroom is one type of mushrooms that begin to be developed in the village of Bayur. They cultivate the paddy straw mushroom because the commodity, can make a lot of money in the market, the maintenance are relatively easy and cheap with the price quite beneficial. For the media paddy straw mushroom used the empty bunches of oil palm which it was the utilization of waste from palm oil plantations. After several harvests, the paddy straw mushroom replaced with new media. Of the empty bunches of oil palm used, the rest of the media mushroom that become waste that accumulates and difficult to decomposed because of the cellulose and lignin of the empty bunches of oil palm. Increasingly the waste will pollute and containing bacterium of disease. The problems faced by partner is related to the aspects of the provision of energy and management waste processing the rest of the production of mushroom. To overcome the problems, the team provide training the procedure of making briquette and design an instrument print of briquette from the rest of the media of mushroom. This instrument give an advantages for both in the independence of energy and the utilization of the waste production . The method of PKM activity involved the partners (the farmers) in the overall of activities. The outer of this main activity are the instrument print of briquette and to increase the ability and knowledge the partner. The product development briquettes can be used own and sold commercially. With this training, the ability of the partner of the making product briquettes can reduce production cost and to raise the income of partner. Keywords: efficient technology; print of briquettes; waste; media the paddy straw mushroom
Pengaruh Suhu Dan Waktu Pretreatment Alkali Pada Isolasi Selulosa Limbah Batang Pisang lia lismeri; Yuli Darni; Mitra Dimas Sanjaya; Muhammad Iqbal Immadudin
Journal of Chemical Process Engineering Vol 4, No 1 (2019)
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (907.344 KB) | DOI: 10.33536/jcpe.v4i1.319

Abstract

Limbah batang pisang yang dihasilkan dari perkebunan pisang merupakan biomassa yang  kandungan selulosanya dapat diisolasi dan dimanfaatkan sebagai bahan baku pembuatan serat selulosa. Penelitian ini bertujuan untuk meningkatkan yield selulosa dari batang pisang dengan perlakuan pretreatment alkali. Pelarut alkali yang digunakan adalah NaOH 1% dengan variabel operasi berupa temperatur 60, 70, dan 80°C dan waktu 60, 90, dan 120 menit. Proses delignifikasi dilakukan dengan menggunakan Na2SO3 20% dan H2O2 2% sebagai agen pemutih. Dari hasil analisis kadar lignoselulosa, pretreatment yang menghasilkan rendemen selulosa terbesar yaitu 51,64% pada kondisi operasi suhu 80°C selama  60 menit. Dari hasil Uji FTIR dan SEM dapat diketahui bahwa isolasi selulosa dari batang pisang dengan pretreatment alkali memperlihatkan keberadaan gugus fungsi utama penyusun selulosa serta struktur permukaan serat selulosa.
KARAKTERISASI BIOFOAM BERBASIS PATI KULIT SINGKONG DENGAN VARIASI KOMPOSISI POLIVINIL ALKOHOL (PVA), KITOSAN, DAN GLISEROL MELALUI METODE THERMOPRESSING Nindya Indah Kusumawardani; Yuli Darni; Lia Lismeri; Almira Alda Eka Pratiwi
JURNAL INTEGRASI PROSES Vol 15, No 1 (2026)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jip.v15i1.36574

Abstract

Styrofoam menimbulkan masalah serius bagi lingkungan dan kesehatan, sehingga diperlukan alternatif kemasan berkelanjutan berbasis biomaterial. Studi ini mengembangkan biofoam berbasis limbah kulit singkong dengan pendekatan baru melalui evaluasi sinergis antara kitosan, polivinil alkohol (PVA), dan gliserol terhadap sifat fisik dan mekanik material. Biofoam disintesis melalui gelatinisasi pati (1:2 b/v, 78 °C), diikuti penambahan kitosan (1, 2, dan 3 g), PVA (10 dan 15%), gliserol (10 dan 15%), protein (10%), asam sitrat (10%), NaHCO3 (1,2%), dan magnesium stearat (4%), kemudian dicetak menggunakan metode thermopressing (125 °C, 15 menit). Karakterisasi meliputi densitas, daya serap air, kuat tekan, FTIR (Fourier Transform Infrared), dan XRD (X-Ray Diffraction). Hasil terbaik menunjukkan kuat tekan sebesar 0,71 MPa dengan penambahan kitosan 1 g, sementara gliserol 10% dan PVA 10% meningkatkan fleksibilitas, tetapi juga meningkatkan daya serap air hingga 25,40% dan densitas menjadi 0,4235 g/cm3. Analisis FTIR mengindikasikan adanya interaksi antargugus fungsi yang mendukung peningkatan sifat mekanik, sedangkan analisis XRD mengindikasikan adanya struktur semi-kristalin yang mendukung sifat mekanik biofoam. Hasil menunjukkan bahwa kitosan meningkatkan kekuatan mekanik melalui interaksi antarmolekul, sedangkan gliserol berperan sebagai plastisiser yang meningkatkan fleksibilitas, tetapi juga meningkatkan daya serap air. Biofoam berbasis kulit singkong pada formulasi optimal memenuhi standar komersial pada parameter yang diuji, sehingga berpotensi diaplikasikan sebagai kemasan pelindung ringan (cushioning packaging) untuk produk nonpangan sebagai pengganti styrofoam.
PENDAMPINGAN PENANGANAN SAMPAH PLASTIK UNTUK MINIMASI DAMPAK PENCEMARAN LINGKUNGAN DI UNIVERSITAS SANG BUMI RUWA JURAI BANDAR LAMPUNG yuli darni; Lia Lismeri; Herti Utami; Simparmin Ginting; Aris Setiawan; Nindya Kusumawardhani; Muhammad Hussein
Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Vol. 10 No. 1 (2026): Vol. 10 No. 1, Maret 2026
Publisher : Lembaga Penelitian dan Pengabdian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jss.v10i1.670

Abstract

The community service activity at Sang Bumi Ruwa Jurai University (Saburai) aims to improve and develop initiatives for plastic waste management to minimize environmental pollution and generate products with higher economic value. Through this program, students learn how to sort and manage plastic waste within the campus environment. This activity directly impacts plastic waste handling efforts. The methods applied in this program include socialization and training on waste management. During the socialization, the utilization and management of plastic waste are briefly explained using the concepts of reduce, reuse, and recycle. Training sessions are provided to students, staff, and cleaning personnel at Saburai University, focusing on plastic waste sorting techniques. The activities take place at Saburai University, Bandar Lampung, targeting primarily the students and staff, who are then expected to disseminate the knowledge to the surrounding community. The expected outcome is that partners are able to manage plastic waste more efficiently and enhance its economic value. This initiative represents a positive contribution to one of the government’s programs in environmental protection and efforts to minimize waste and pollution.
Co-Authors Almira Alda Eka Pratiwi Aris Setiawan Darmansyah Darmansyah Dita Synthauli Evaniya Herti Utami Mitra Dimas Sanjaya Muhammad Hanif Muhammad Hussein Muhammad Iqbal Immadudin Nandi Haerudin Nindya Indah Kusumawardani Nindya Kusumawardhani Sarkowi Sarkowi Simparmin Ginting Yuli Darni Yuli Darni