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All Journal Jurnal Keteknikan Pertanian Journal of Engineering and Technological Sciences Teknika: Jurnal Sains dan Teknologi Berdikari: Jurnal Pengabdian Masyarakat Indonesia ASEAN Journal of Chemical Engineering
Ernawati, Lusi
Chemical Engineering Study Program, Institut Teknologi Kalimantan, Jl. Soekarno-Hatta Km.15, Karang Joang, Balikpapan, East Kalimantan, 76127, Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering

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Flexural and Fractography Behavior of Unsaturated Polyester Composite Filled with Bangkirai Wood Fiber Andromeda Dwi Laksono; Lusi Ernawati; Desy Maryanti
Jurnal Teknika Vol 16, No 1 (2020): Edisi Juni 2020
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v16i1.7792

Abstract

PPada penelitian ini, kami melaporkan modifikasi kayu dengan meningkatkan sifat mekanisnya dalam struktur komposit. Kayu yang dibentuk menjadi meja, kursi, lemari, dan lain-lain terdapat sisa-sisa seperti serbuk (sawdust) setelah produksi. Sisa ini yang disebut limbah bila dimanfaatkan dengan baik akan menghasilkan keuntungan tersendiri. Namun, agar limbah kayu bermanfaat menjadi produk baru, perlu diuji kekuatannya. Fokus penelitian ini adalah limbah kayu seperti kayu bangkirai yang perlu ditingkatkan kekuatannya. Teknologi komposit yang berasal dari serat alami dalam kayu adalah solusi untuk menemukan bahan baru yang diharapkan dapat diterapkan pada berbagai aplikasi. Dalam observasi ini, material komposit dibuat menggunakan metode hand lay-up dengan variasi fraksi filler 40% dan 60% serat bangkirai. Bahan asal yang dibentuk kayu bangkirai digunakan sebagai variabel kontrol dalam uji tekuk. Hasil uji tekuk diperoleh rata-rata modulus elastisitas tertinggi yaitu 2,22 GPa dalam fraksi filler 60%. Selain itu ditemukan bahwa pola fraktur dari uji tekuk berdasarkan pengamatan scanning electron microscopy (SEM) menunjukkan bahwa ada kegagalan dalam bentuk rongga. Dari penelitian ini, dapat disimpulkan bahwa semakin tinggi fraksi filler mengakibatkan semakin tinggi nilai modulus elastisitasnya. In this work, we report the modification of the woods by increasing their mechanical properties in a composite structure. Wood that is formed into tables, chairs, cabinets, etc. there are remnants such as powder, sawdust after production. This rest, called waste, if used properly, will produce its benefits. However, for wood waste to be useful as a new product, its strength must be tested. The focus of this research is wood waste, such as bangkirai wood, which needs to be strengthened. The focus of this study is wood waste, such as bangkirai wood that required to be mechanically improved. Composite technology derived from natural fibers in wood is the solution to find new materials that are expected to be applied to various applications. In this observation, the composite materials were made using the hand lay-up method with variations in filler fractions of 40% and 60% of bangkirai fiber. The origin material formed bangkirai wood is used as the control variable in the flexural test. The flexural test results obtained the highest average modulus of elasticity of 2.22 GPa in the 60% filler fraction. It is also found that fracture patterns from flexural tests based on scanning electron microscopy (SEM) observations showed that there was a failure in the form of voids. It concludes that the higher the filler fraction, the higher the modulus of elasticity.
The training of tempeh yoghurt and tempeh brownies production as an effort to increase the sell-ing value of tempeh in the somber small industrial estate, Balikpapan Alfonsina Abat Amelenan Torimtubun; Linda Kirana Singagerda; Lusi Ernawati
Berdikari: Jurnal Pengabdian Masyarakat Indonesia Vol. 1 No. 2 (2018): Berdikari: Jurnal Pengabdian Masyarakat Indonesia
Publisher : Future Science

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Abstract

Tempeh is an Indonesian traditional food processed by soybean fermentation by Rhizopus oligosporus mold which is inexpensive, has the distinctive flavour and high nutritional value. High protein tempeh has been accepted as a healthy food. However, tempeh is still associated with low socioeconomic class food. Therefore, it is necessary to look for an alternative tempeh processing to increase its economic value by processing tempeh into yoghurt and brownies. The aim of this community service is to increase the community knowledge about the diversification of tempeh processed products in general and in particular to provide a training about the processing of tempeh juice into yoghurt and tempeh pulp into brownies in order to help the increasing economic value of tempeh production from Somber small industrial centre in Balikpapan. Methods used are gradually from: (1) initial preparation in the form of a location survey and a socialization team formation, (2) training preparation in the form of yoghurt tempeh and brownies tempeh production as a tester, banners and brochures printing, and tempeh production process documentation for presentation material of training socialization, (3) implementation of training, up to (4) evaluation of results in the form of product organoleptic survey. The results of organoleptic test showed that yoghurt and brownies from juice and tempeh pulp were accepted and preferred by Somber small industrial centre community as panellists with a rating score of colour, aroma, texture and taste are 1.6; 1,2; 1,2; 0.8 for tempeh yoghurt and 2.6; 2.2; 2.2; 2.8 for tempeh brownies, respectively. Through this program, the tempeh production from Somber can be increased and processed into innovative products that have a higher selling value. Economic analysis and feasibility study is needed to keep this activity run continuously.
Organoleptic Test Analysis of Tempe Chocolate by Addition of Flavors for Increasing Sale Value and Diversification of Local Food Products Annisa Rahmita Soemarsono; Lusi Ernawati; Kartika Nugraheni
Berdikari: Jurnal Pengabdian Masyarakat Indonesia Vol. 2 No. 2 (2020): Berdikari: jurnal Pengabdian Masyarakat Indonesia
Publisher : Future Science

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Abstract

Tujuan pengabdian ini untuk memberdayakan masyarakat dalam pengembangan produk, melatih jiwa kewirausahaan, dan mendapatkan tambahan penghasilan. Selain itu juga Program ini juga ditujukan untuk memberikan sosialisasi cara pembuatan cokelat tempe. Harapannya, berdasar-kan informasi tersebut ibu-ibu dapat mengembangkan usaha produksi cokelat tempe lebih luas jangkauannya, tidak hanya di wilayah setempat saja. Melainkan bisa ke wilayah-wilayah lain sampai tingkat kecamatan pada umumnya. Produk cokelat tempe tersebut bisa dikenal oleh masyarakat indonesia. Hasilnya ibu-ibu setempat dinyatakan sudah bisa membuat cokelat tempe. Kegiatan yang dilakukan terdiri dari (i) Tahap persiapan (pembuatan formula dan analisis kandungan gizi formula) (ii) Pembuatan desain kemasan serta label produk, (iii) Tahap kegiatan di lapangan meliputi (pelatihan kewirausahaan, praktik pembuatan cokelat tempe), (iv) Tahap kegiatan penilaian meliputi (pembagian kuisioner kepada masyarakat golongan muda dan dewasa) sebagai keluaran data uji organoleptik (rasa, aroma, warna, tekstur). Dalam mendukung tercapainya target, solusi yang tim lakukan adalah membuat cokelat tempe dengan variasi rasa (original, banana, strawberry, dan green tea), membantu desain kemasan produk. Dari hasil uji organoleptik, diperoleh bahwa cokelat tempe dengan varian rasa strawberry (berdasarkan pilihan panelis golongan anak muda) dan cokelat tempe original berbahan baku cokelat batang Colata (berdasarkan pilihan panelis golongan orang dewasa) memiliki hasil organoleptik rasa, warna, aroma dan tekstur paling tinggi dibandingkan cokelat tempe dengan varian rasa banana dan green tea.
Pendampingan Pelaksanaan Kegiatan Posyandu Keliling pada Masa Pandemic CoVid 19 dalam Meningkatkan Kesehatan Balita di Posyandu Kasih Ibu Andriati Ningrum; Lusi Ernawati
Berdikari: Jurnal Pengabdian Masyarakat Indonesia Vol. 3 No. 2 (2021): Jurnal Pengabdian Masyarakat Indonesia ( INPRESS)
Publisher : Future Science

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Abstract

Tujuan dari pengabdian masyarakat ini untuk melihat implementasi dari aktivitas posyandu terutama pada masa pandemic Covid 19 dalam rangka meningkatkan kualitas kesehatan balita. Pendekatan penelitian dilakukan dengan mensurvey hasil dari kegiatan atau laporan posyandu yang mengevaluasi kualitas kesehatan balita. Populasi balita yang disurvey sebanyak 50 balita di lingkungan posyandu Kasih Ibu, Jaka Setia, Jawa barat. Berdasarkan survey laporan dari Posyandu selama masa pandemic ini yang dilakukan dengan posyandu keliling dan implementasi yang dilakukan menunjukan hasil yang baik dimana aktivitas posyandu pada masa pandemic ini meliputi (a) pengumpulan data berat dan tinggi dari balita; (b) pendampingan MP ASI dan juga suplementasi Vitamin A; pendampingan intervensi feeding pada balita kurang gizi; imunisasi; monitoring ISPA dan program diare pada balita; kesehatan gigi dan kesehatan balita secara umum.
Pelatihan Pembuatan Biobriket Ramah Lingkungan Berbahan Dasar Campuran Limbah Bonggol Jagung/Ampas Kopi/Serbuk Gergaji Kayu Kelompok Masyarakat Petani (GAPOKTAN) KM 12 Balikpapan Utara : Training on Making Biobriquettes Using Corncob/Coffee Ground/Wood Sawdust-based Agriculture Waste for the Farmers Community Group (GAPOKTAN) KM 12 North Balikpapan Annisa Rahmita Soemarsono; Lusi Ernawati; Azmia Rizka Nafisah; Fadhil Muhammad Tarmidzi
Berdikari: Jurnal Pengabdian Masyarakat Indonesia Vol. 4 No. 1 (2021): Berdikari: jurnal Pengabdian Masyarakat Indonesia
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/bjpmi.04.01.01

Abstract

Kebutuhan energi masyarakat yang meningkat tiap tahun masih sangat bergantung kepada energi fosil. Untuk pemenuhan kebutuhan rumah tangga masih mengandalkan minyak tanah dan gas LPG. Salah satu cara mengurangi penggunaan energi fosil adalah dengan menggunakan limbah bonggol jagung hasil kelompok masyarakat petani jagung menjadi biobriket. Biobriket merupakan salah satu sumber energi terbarukan. Limbah bonggol jagung adalah limbah padat dari hasil pertanian dan industri. Limbah bonggol jagung memiliki kandungan selulosa, hemiselulosa, dan lignin. Kadar selulosa yang tinggi pada limbah bonggol jagung dapat dimanfaatkan sebagai bahan utama penyusun biobriket. Peningkatan kualitas biobriket berbanding lurus dengan peningkatan kadar selulosa. Selain selulosa, juga dibutuhkan bahan perekat untuk mengikat matriks biobriket. Tepung tapioka dipilih menjadi bahan perekat dalam kegiatan pengolahan biobriket ramah lingkungan. Biobriket dipastikan memiliki tingkat keefektifan yang baik untuk mengurangi penggunaan energi fosil dan memiliki nilai ekonomis yang tinggi bagi produsen dan konsumen di Kalimantan Timur. Kelompok masyarakat petani Balikpapan Utara adalah salah satu kelompok petani yang kurang memiliki wawasan terkait pemanfaatan limbah pertanian menjadi produk ramah lingkungan bernilai ekonomis dan berpotensi sebagai pengganti bahan bakar, seperti biobriket. Oleh karena itu, dilakukan sosialisasi dan pelatihan pembentukan biobriket menggunakan bahan dasar limbah pertanian terhadap kelompok petani tersebut. Dengan demikian, biobriket dari kombinasi limbah bonggol jagung/serbuk gergaji kayu/ampas kopi dengan perekat tepung tapioka diharapkan dapat mengatasi kebutuhan energi bagi masyarakat pada masa yang akan datang.
Performance of Chlorella sp. and Multicultural Bacteria in Removing Pollutants from Nutrient-Rich Wastewater Mohd Edyazuan Azni; Atiqah Zainal Abidin; Roslan Noorain; Sharifah Mariam Syed Hitam; Lusi Ernawati; Rosnah Abdullah; Ahmad Shoiful; Rozyanti Binti Mohamad
ASEAN Journal of Chemical Engineering Vol 22, No 1 (2022)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.69427

Abstract

The most common method of treating palm oil mill effluent (POME) is by using various types of bacteria communities. However, the utilization of microalgae in consuming the high nutrient content in wastewater offer additional benefit, particularly for CO2 sequestration. In this study, we proposed to evaluate the performance of multicultural bacteria obtained from municipal wastewater and Chlorella sp. for batch treatment of POME at different COD concentrations (ranges between 600 to 1,300 mg/L), microalgae species (C. vulgaris and C. pyrenoidosa) and speed of agitation (0 and 150 rpm). The results showed that between the bacteria and microalgae that are involved in POME treatment, microalgae give high removal of colour (93%) and ammoniacal nitrogen (95%). As for the COD and phosphate removal, both microorganisms show comparable performances. It was observed that C. pyrenoidosa was able to remove more colour compared to C. vulgaris where higher lipid yield production was obtained (47.6%). However, there is no significant impact of agitation on pollutant removal. This study also reveals that co-cultivation of different microalgae species does not affect the efficiency of the system. This study provides an important insight into developing an efficient and environmentally friendly method to treat wastewater by incorporating green technology in the treatment system
Silk Fibroin/Soursop Seed Bio-Adsorbent for Crystal Violet and Copper Metal Ion Removal Lusi Ernawati; Ruri Agung Wahyuono; Abdul Halim; Nurul Widiastuti; Audi Sabrina; Kurnia Handayani
Journal of Engineering and Technological Sciences Vol. 54 No. 5 (2022)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2022.54.5.14

Abstract

Groundwater highly contaminated with organic substances and heavy metal ions in the Kariangau Industrial Area, Balikpapan, East Kalimantan is indicated by the comparatively high COD. Therefore, the technology for treating wastewater to remove various toxins before releasing it into the environment needs to be advanced. Here, we present a green synthetic method of a composite adsorbent (SF/SS) using soursop seeds and silkworm cocoons. SEM, FTIR, and BET were used to analyze the physicochemical characteristics of the adsorbent. Mechanistic investigation of the SF/SS adsorbent performance for the removal of Cu2+ metal ions and crystal violet (CV) was conducted, while taking into account variables affecting adsorption properties. The Freundlich and Langmuir isotherm adsorption models were used to fit the adsorption equilibrium, while pseudo-first and second-order models were used to assess the adsorption kinetics. The mesoporous SF/SS adsorbent exhibited the highest adsorption capacities of 78.6 and 69.2 mg‧g-1, respectively. The pseudo-first model showed the best fit for CV removal with a kinetic rate of 0.0634 min-1, while the Freundlich model exhibited the best fitting for both of CV and Cu2+ removal. The results showed that SF/SS can be applied as an efficient adsorbent for both of heavy metal and organic dye removal.
The Formulation of Agrowaste-based Edible Coating Composition to Preserve Quality of Pineapple Inggit Kresna Maharsih; Memik Dian Pusfitasari; Lusi Ernawati; Citra Ayu Saraswati Putri; Muhammad Taufiq Hidayat
Jurnal Keteknikan Pertanian Vol. 10 No. 2 (2022): Agustus 2022
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.010.2.145-161

Abstract

Nanas (Ananas comosus) adalah salah satu komoditas buah unggulan di Indonesia. Namun, buah nanas termasuk sangat sensitif dan mudah mengalami penurunan kualitas. Salah satu cara untuk mencegah atau memperlambat fenomena tersebut adalah dengan melapisi nanas terolah minimal menggunakan edible coating. Pada penelitian ini, edible coating dibuat dari pati kulit singkong, kitosan, dan gliserol. Kitosan tidak dapat larut dalam air, sehingga harus menggunakan asam asetat dan asam sitrat untuk melarutkannya. Selain sebagai pelarut, asam asetat dan asam sitrat juga berperan sebagai antioksidan. Tujuan dari penelitian ini adalah memperoleh komposisi edible coating terbaik untuk melindungi nanas terolah minimal dari pembusukan. Pembuatan edible coating dilakukan dengan variasikan konsentrasi pati, gliserol, serta jenis asam untuk melarutkan kitosan. Adapun hasil terbaik yang didapatkan pada variabel M yang terdiri dari pati 5% b/v, gliserol 0.6 mL/gr, kitosan 1% b/v dengan pelarut asam sitrat 2% b/v. Browning muncul pada hari ke-14 pada nanas terlapisi edible coating Variabel M yang disimpan pada suhu 12.4oC dengan persen penurunan kadar vitamin C adalah 1.11%. Hasil ini juga sesuai dengan data uji sensori, dimana nanas dengan pelapis Variabel M memperoleh nilai rata-rata kesukaan tertinggi untuk parameter aroma, tekstur, warna, rasa, dan total penerimaan.
Pengenalan Produk Olahan Tanaman Kangkung dan Pelestarian Kampung Wisata Kelurahan Sumber Rejo Balikpapan Tengah Barokatun Hasanah; Lusi Ernawati; Ahmad Nizar; Ganang Bimantara; Erlingga Primashudi
Berdikari: Jurnal Pengabdian Masyarakat Indonesia Vol. 5 No. 1 (2022): Berdikari: jurnal Pengabdian Masyarakat Indonesia
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/bjpmi.05.01.01

Abstract

The use of local vegetable gardens for tourism is growing quickly right now, offering not just stunning views but also other interesting experiences. Education tourism is one that is currently growing. For students, educational tourism can offer a learning experience outside of classes so that it can be used as a means of interacting and mingling with the community. Land kale Garden, which is located in the SumberRejo Village, Central Balikpapan, is one of the vegetable gardens that serves as a transportation for tourist communities. This region is highly interesting because it has a large amount of farming land kale. The name of land kale garden is derived from the occupation of the locals, who make up roughly 95% of their incomes as farmers who tend to and manage their own crops. It is necessary to carry out service community program activities for the making of land kale processed products and the preservation of tourist villages that are beneficial to the community in order to explore the potential area by taking a look at the opportunities or potential aspects. Through this community service activity, processed land kale products into brownies with the concept of using green vegetables and the development of garden tourism villages are well received and used as media for community activities as educational tours and increase skills in making brownies made from land kale.
Pembuatan Larvasida Daun Jeruk Limau Dan Kelambu Air Untuk Pencegahan Kasus Demam Berdarah Karang Joang: Making Larvicides from Lime Leaves and Water Mosquito Nets to Prevent Cases of Dengue Fever in Karang Joang Lusi Ernawati; Dian Rahmawati; Asful Hariyadi; Riza Alviany
Berdikari: Jurnal Pengabdian Masyarakat Indonesia Vol. 5 No. 1 (2022): Berdikari: jurnal Pengabdian Masyarakat Indonesia
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/bjpmi.05.01.02

Abstract

The health office in Balikpapan is still tracking the number of dengue cases, which has reached at least 90 cases, until the third week of March 2022. During this outbreak, almost everyone is focused on avoiding and treating Covid-19 infections. Dengue fever is an illness to which you should pay close attention. In particular, because dengue fever remains a dangerous sickness in Indonesia. A range of approaches, including the use of larvicides, have been used to prevent and control dengue hemorrhagic fever (DBD). It is only that the mosquito that spreads Dengue Hemorrhagic Fever (DBD) has become susceptible to chemical larvicides, which are widely used by the general public. The purpose of this community service project is to teach people how to produce environmentally friendly natural larvicides from lime leaves. Community socialization, training in how to create larvicide, and knowledge evaluation are all part of the implementation phase. The memorial service will be place in Karang Joang North Balikpapan. Through lectures question and answer sessions, the community gets involved in the implementation process. Training and the use of health protocols are used directly in the manufacturing of larvicides. Water nets were built in several water reservoirs owned by homeowners, as well as similar programs involving of the monitoring and evaluation to provide the instruction and training on natural larvicide technology.
Co-Authors Abdul Halim Ahmad Nizar Ahmad Shoiful Alfonsina Abat Amelenan Torimtubun Annisa Rahmita Soemarsono Annisa Rahmita Soemarsono Annisa Rahmita Soemarsono Atiqah Zainal Abidin Audi Sabrina Azmia Rizka Nafisah Barokatun Hasanah Citra Ayu Saraswati Putri Desy Maryanti Dian Rahmawati Erlingga Primashudi Fadhil Muhammad Tarmidzi Farida Nur Hayati Ganang Bimantara Hariyadi, Asful Inggit Kresna Maharsih Kartika Nugraheni Kurnia Handayani Laksono, Andromeda Dwi Linda Kirana Singagerda Memik Dian Pusfitasari Mohd Edyazuan Azni Muhammad Taufiq Hidayat Ningrum, Andriati Nita Ariestiana Putri Nurul - Widiastuti Riza Alviany Rizka Ayu Yuniar Rizka Lestari Roslan Noorain Rosnah Abdullah Rozyanti Binti Mohamad Ruri Agung Wahyuono Sharifah Mariam Syed Hitam