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All Journal Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Makara Journal of Technology
Lischer, Kenny
Universitas Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health

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PEMANFAATAN LEBAH DAN PENGELOLAAN SAMPAH UNTUK EKONOMI RUMAH TANGGA YANG BERKELANJUTAN Afiatry Putrika; Deti Purwanti; Adra Amalia Nur Ahlina; Nadhifa Tazkia Ramadhani; Ratna Yuniati; Muhamad Sahlan; Kenny Lischer; Apriliana Cahya Khayrani; Amy Yayuk Sri Rahayu; Nidaan Khafian; Astari Dwiranti
Dharmakarya Vol 10, No 3 (2021): September, 2021
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/dharmakarya.v10i3.32506

Abstract

Lebah merupakan hewan dari kelas Insecta yang menghasilkan produk kaya manfaat, diantaranya madu, propolis, dan bee pollen. Lebah, khususnya yang tanpa sengat, dapat dibudidayakan oleh masyarakat perkotaan karena relatif aman. Tim Pengabdian Masyarakat Multidisiplin Universitas Indonesia, yang terdiri dari Fakultas Matematika dan Ilmu Pengetahuan Alam, Fakultas Teknik, dan Fakultas Ilmu Administrasi bekerjasama dengan komunitas “3bee” telah melaksanakan serial workshop secara daring dengan topik pemanfaatan lebah. Selain itu, tim pengabdi dengan “holistika institute” juga mengajak masyarakat untuk memanfaatkan sampah rumah tangga agar dapat diolah kembali menjadi produk yang dapat menghidupkan perekonomian rumah tangga. Serial workshop terdiri dari empat seri, masing-masing terdiri dari dua sesi. Topik yang disampaikan meliputi pengenalan lebah dan urban bee; tanaman pakan lebah dan produk lebah; pangan sehat dari lebah; pengolahan sampah organik dan anorganik; serta pemasaran dan kualitas pelayanan. Workshop diselenggarakan selama 4 Pekan mulai tanggal 10 Oktober hingga 7 November 2020. Selain pemaparan narasumber, terdapat pre-test, post-test, dan evaluasi kegiatan dari peserta pada tiap seri. Peserta workshop berjumlah 171 orang yang berasal dari berbagai wilayah di Indonesia. Sebagian besar berasal dari kalangan akademisi, komunitas penggiat lebah, serta pegawai dinas lingkungan dan kehutanan. Berdasarkan hasil evaluasi, sebagian besar peserta merasa sangat puas (rentang kepuasan 4,21-5,00) dengan workshop yang terselenggara dan berencana mengimplementasikan pengetahuan yang diperoleh dari workshop ini (87%). Program pengabdian masyarakat multidisiplin ini dapat diduplikasi pada program lain sehingga penyampaian materi bersifat komprehensif. Program ini diharapkan dapat terus dikembangkan melalui program pendampingan sehingga lebah dan sampah dapat dimanfaatkan untuk meningkatkan ekonomi rumah tangga berkelanjutan di Indonesia.
Purification Simulation With Vapor Permeation and Distillation-Adsorption In Bioethanol Plant Gozan, Misri; Setiawan, Mia Sari; Lischer, Kenny
Makara Journal of Technology Vol. 21, No. 1
Publisher : UI Scholars Hub

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Abstract

High purity of Bioethanol is required in biofuel mixing with gasoline (EXX). In bioethanol production line, the azeotropic property of ethanol-water becomes the barrier for purification process. This study examined two bioethanol separation processes by support of simulation tools, Superpro Designer 9.0 software. Ethanol purity and a low costeconomical process were the major considerations. Purification method of vapor permeation membrane technology was compared with distillation-adsorption method. Data from previous lab experiments and some literatures were used. The results showed that distillation-adsorption method is more economical compared to vapor permeation technology. Payback period of the simulation is 3.9 years and 4.3 years to distillation adsorption and vapor permeation respectively with each IRR value is 20.23% and 17.89%. Initial investment value of vapor permeation is 9.6% higher than distillation method. Significant difference observed in operating costs, since more units involved in vapor permeation require more labors to operate.
Identification of Thermophilic Bacteria from Tirta Lebak Buana Hot Spring in Serang, Banten, Indonesia Lischer, Kenny
Makara Journal of Technology Vol. 25, No. 3
Publisher : UI Scholars Hub

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Abstract

Since Taq polymerase was first explored and identified from thermophilic bacteria, these bacteria have become well-known sources of thermostable enzymes. New thermophilic bacteria have been investigated to broaden biodiversity and translation research. Studies have shown interests in Indonesia because of thermophilic bacteria found in hot springs. This country is traversed by the ring of fire and has more than 70 volcanoes, resulting in the wide distribution of hot springs across the country. Although many reports have been performed, studies have yet to explore thermophilic bacteria in Tirta Lebak Buana hot springs, Java Island, Indonesia. This research was the first to examine thermophilic bacteria in Tirta Lebak Buana hot spring. Two samples from two different sampling sites were obtained and analyzed through 16srRNA analysis (sampling sites A and B). Measurements indicated that the temperature (50 °C) in sampling site A was higher than that in sampling site B (40 °C), but they had similar pH (7.0). Polymerase chain reaction (PCR) showed that the 16srRNA of the specimen was around 1465 bp. The analysis of the 16srRNA sequence revealed that the obtained bacteria have a similar sequence and close relationship with Bacillus subtilis subsp. stercoris strain N12.
Co-Authors Adra Amalia Nur Ahlina Afiatry Putrika Apriliana Cahya Khayrani Astari Dwiranti Deti Purwanti Misri Gozan MUHAMAD SAHLAN Nadhifa Tazkia Ramadhani Nidaan Khafian Rahayu, Amy Yayuk Sri Ratna Yuniati Setiawan, Mia Sari