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All Journal International Journal of Renewable Energy Development Jurnal Bahan Alam Terbarukan Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) ASEAN Journal of Community Engagement Abdi Laksana : Jurnal Pengabdian Kepada Masyarakat Nemui Nyimah
Damayanti, Sri Ismiyati
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Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Public Health Social Sciences Other

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Inoculum Selection and Micro-Aeration for Biogas Production in Two-Stage Anaerobic Digestion of Palm Oil Mill Effluent (POME) Damayanti, Sri Ismiyati; Astiti, Dian Fitriani; Purnomo, Chandra Wahyu; Sarto, Sarto; Budhijanto, Wiratni
Jurnal Bahan Alam Terbarukan Vol 8, No 1 (2019): June 2019 [Nationally Accredited - Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v8i1.16318

Abstract

Two-stage anaerobic fluidized bed is an innovation in anaerobic digestion technology intended to handle liquid waste with high organic loading and complex substrate. The process is based on separation between acidogenic/acetogenic and methanogenic processes. The first stage is anaerobic process to convert substrate (represented as soluble chemical oxygen demand/sCOD) into volatile fatty acids (VFA). The second stage is methanogenic process to convert VFA into biogas. This study aimed to separate acidogenic/acetogenic and methanogenic processes by means of limited injection of air (micro-aeration) and inoculum selection. Micro-aeration was introduced in acidogenic/acetogenic stage because the relevant microbes were facultative so that the obligate anaerobic methanogens will be suppressed. On the other hand, the methanogenic reactor was kept completely anaerobic to ensure methanogenic dominance over acidogenic/acetogenic ones. Two sources of inoculums were used in this study, i.e. anaerobically digested biodiesel waste and anaerobically digested cow manure. Both inoculums were taken from active biogas reactor treating biodiesel waste and cow manure, respectively. Experiments were run in batch reactors treating palm oil mill effluent (POME) as the substrate for the acidogenic/acetogenic reactor. After the reaction in the first stage reached the minimum substrate concentration, the content of the reactor was used as the substrate for the methanogenic reactor as the second stage. Routine measurements were taken for sCOD and VFA concentrations, biogas production, and methane concentration in the biogas. Results confirmed that micro-aeration maintained good performance of acidogenic/acetogenic process, which was indicated by peaks in VFA accumulation, while suppressing methanogenic activities as no methane produced in this stage. Digested biodiesel waste was superior inoculum to be compared to digested cow manure with respect to sCOD removal. In the methanogenic stage, digested biodiesel waste also performed better as inoculum as it led to higher VFA conversion, higher biogas production rate, and higher methane content in the biogas. 
The Impact of Hydraulic Retention Time on the Biomethane Production from Palm Oil Mill Effluent (POME) in Two-Stage Anaerobic Fluidized Bed Reactor Ramadhani, Laily Isna; Damayanti, Sri Ismiyati; Sudibyo, Hanifrahmawan; Azis, Muhammad Mufti; Budhijanto, Wiratni
International Journal of Renewable Energy Development Vol 10, No 1 (2021): February 2021
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2021.20639

Abstract

Indonesia is currently the most significant crude palm oil (CPO) producer in the world. In the production ofCPO, 0.7m3 of Palm Oil Mill Effluent (POME) is emitted as the wastewater for every ton of fresh fruit bunches processed in the palm oil mill.With the increasing amount of CPO production, an effective POME treatment system is urgently required to prevent severe environmental damage. The high organic content in the POME is a potential substrate forbio-methane production. The biomethane production is carried out by two groups of microbes, i.e., acidogenic and methanogenic microbes. Each group of bacteria performs optimally at different optimum conditions. To optimize the biomethane production, POME was treated sequentially by separating the acidogenic and methanogenic microbes into two stages of anaerobic fluidized bed reactors (AFBR). The steps were optimized differently according to the favorable conditions of each group of bacteria. Although perfect separation cannot be achieved, this study showed that pH control could split the domination of the bacteria, i.e., the first stage (maintained at pH 4-5) was dominated by the acidogenic microbes and the second stage (kept neutral) was governed by methanogens. In addition to the pH control, natural zeolitewas added as microbial immobilization media in the AFBR to improve the performance of the microorganisms, especially in preventing microbial wash out at short hydraulic retention time (HRT). This study was focused on the understanding of the effect of HRT on the performance of steady-state continuous AFBR. The first stage as the acidogenic reactorwas rununder acidic conditions (pH 4-5) at five different HRTs. In comparison, the second stage as the methanogenic reactorwasrun under the neutral condition at four different HRTs. In this work,short HRT (5 days) resulted in better performance in both acidogenic AFBR and methanogenic AFBR. The immobilization media was hence essential to reduce the risk of washout at such a short HRT. The two-stage system also resulted in quite a high percentage of soluble chemical oxygen demand (sCOD) removal, which was as much as 96.06%sCOD.
INTRODUKSI KOMPOR PELLET BIOMASSA BAGI UKM MINYAK ATSIRI DI KECAMATAN BANDAR MATARAM KABUPATEN LAMPUNG TENGAH Iryani, Dewi Agustina; Damayanti, Sri Ismiyati; Ginting, Simparmin Br; Azhar, Azhar
Abdi Laksana : Jurnal Pengabdian Kepada Masyarakat Vol 4 No 1 (2023): Abdi Laksana : Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/abdilaksana.v4i1.28386

Abstract

Proses penyulingan minyak serai wangi sangat bergantung dari pasokan bahan bakar karena proses penyulingan membutuhkan pasokan panas untuk mempercepat proses penguapan. Saat ini, proses produksi minyak serai yang dilaksankan oleh UKM/perajin di Indonesia umumnya masih menggunakan cara tradisional yaitu dengan peralatan tungku dan ketel sederhana yang tidak memenuhi standar efisiensi energi dan cenderung menimbulkan banyak polusi. Oleh karenanya, dirasa perlu untuk melaksanakan kegiatan pemberdayaan masyarakat yaitu pemberian pengetahuan dan ketrampilan dalam  penggunaan energi alternatif dengan menggunakan Kompor Pellet Biomassa sebagai pengganti tungku tradisional. Kegiatan pemberdayaan ini diharapkan dapat menjadi solusi yang dapat memecahkan permasalahan yang dihadapi oleh UKM yang mempunyai kesulitan mendapatkan bahan bakar seperti gas elpiji atau kayu bakar. Program pengabdian masyarakat ini merupakan program kemitraan yang dilakukan bersama tiga pihak, yaitu industri biopelet (PT. Indokarya Global Jaya) dan UKM Minyak serai wangi sebagai pengguna bahan bakar pelet. Kegiatan pengabdian masyarakat yang dilaksanakan oleh tim pengabadian kepada masyarakat (PKM) Universitas Lampung bertujuan untuk memperkenalkan dan melatih masyarakat tentang teknologi pembakaran yang lebih ramah lingkungan dan memberikan efesiensi yang lebih tinggi dengan menggunakan pellet biomassa (biopellet) sebagai bahan bakar. Kegiatan pengabdian masyarakat terdiri dari beberapa kegiatan, yaitu: (i) sosialisasi, (ii) pelatihan penggunaan kompor dan proses produksi pelet biomassa (i). Target luaran yang diharapkan pada kegiatan ini adalah masyarakat mendapatkan pengetahuan dan keterampilan dalam menggunakan kompor pelet biomassa untuk sebagai sumber energi dalam proses penyulingan yang lebih ramah lingkungan.Kata Kunci : pelet biomassa, UKM minyak atsiri, energi terbarukan, kompor biomassa
PELATIHAN PEMBUATAN PUPUK ORGANIK GRANUL (POG) BERBAHAN BAKU SLUDGE LUARAN DIGESTER BIOGAS SEBAGAI UPAYA PENGOPTIMALAN PEMANFAATAN DIGESTER BIOGAS PEDESAAN Damayanti, Sri Ismiyati; Nawansih, Otik; Iryani, Dewi Agustina; Taharuddin, Taharuddin; Haviz, Muhammad; Ginting, Simparmin Br
Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Vol. 8 No. 2 (2024)
Publisher : Lembaga Penelitian dan Pengabdian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jss.v8i2.483

Abstract

Pupuk bioslurry padat (sludge) luaran digester biogas mempunyai kualitas yang bagus, namun masih kurang menarik bagi petani karena berbentuk curah. Oleh karena itu, perlu dilakukan pelatihan terkait granulasi sludge tersebut menjadi pupuk organik granul (POG). Tujuan jangka panjang pengabdian ini adalah kemandirian pupuk di tingkat petani, melalui kemampuan petani mengolah limbah di sekitarnya menjadi pupuk organik yang lebih praktis. Target khususnya adalah masyarakat mengetahui iptek terkait granulasi pupuk dan mempunyai keterampilan dalam menggranulkan pupuk. Metode yang digunakan adalah : koordinasi tim dosen dengan warga terkait kegiatan pelatihan, penyiapan bahan baku, yaitu sludge dan kompos berbahan baku sludge-kulit kopi, sosialisasi dan diskusi terkait iptek granulasi pupuk, pelatihan pembuatan POG, dan evaluasi kegiatan bersama masyarakat. Pelaksanaan pengabdian diawali dengan koordinasi tim dosen dengan warga terkait pelaksanaan kegiatan, dilanjutkan penyiapan bahan baku dan alat dengan dibantu warga dan mahasiswa, pelaksanaan pelatihan dibantu mahasiswa dengan mengundang aparat pekon dan warga, diakhiri dengan evaluasi bersama warga untuk menentukan keberlanjutan program. Masyarakat sangat tertarik menjadikan pupuk organik ini sebagai salah satu usaha desa, yang ke depannya dapat dikelola BUMDes. Kendala selama pengabdian adalah sulitnya mengumpulkan warga di siang hari karena berbagai kesibukan yang berbeda. Warga di desa biasa berkumpul malam hari jika ada yang akan dibicarakan
Effect of Codigestion of Rice Straw, Fish Meal, and Cow Manure on Biogas Production and Quality of Solid Bioslurry Fertilizer Damayanti, Sri Ismiyati; Hakim, Rifki Amirul; Anggraeni, Anggi; Saputri, Yuni
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1272-1284

Abstract

The solid phase bioslurry (sludge) had the potential to be used as organic fertilizer. However, the NPK content in it did not meet SNI standards. This research aimed to study the effect of adding rice straw and fish meal to cow dung substrate for anaerobic processing, on the NPK content of the sludge produced and biogas production. Two digesters were used, which functioned as a control and a codigestion digester. Initially, in both digesters, starter breeding was carried out in batches. After the starter had grew well, then the substrate along with water was fed continuously at 88 mL/day in each digester, and an output of 88 mL/day was also produced. Analysis of COD, sCOD, VFA concentrations, and measurements of the pH values of feed and output were carried out every 3 days. Biogas volume measurements were carried out every day. The process was stopped when conditions were steady. At the end of the process, an analysis of the NPK content in the sludge and the methane content in the biogas were carried out. The results showed that biogas from codigestion content almost no methane. However, the sludge contained NPK within the range of SNI standard. Keywords: Biogas, Cow dung, Fish meal, Rice straw, Solid bioslurry fertilizer.
PELATIHAN PEMBUATAN PUPUK ORGANIK GRANUL (POG) BERBAHAN BAKU SLUDGE LUARAN DIGESTER BIOGAS SEBAGAI UPAYA PENGOPTIMALAN PEMANFAATAN DIGESTER BIOGAS PEDESAAN Nawansih, Otik; Damayanti, Sri Ismiyati; Taharuddin; Iryani, Dewi Agustina; Haviz, Muhammad; Ginting, Simparmin Br
Nemui Nyimah Vol. 4 No. 1 (2024): Nemui Nyimah Vol.4 No.1 2024
Publisher : FT Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The solid bioslurry fertilizer (sludge) produced by the biogas digester has good quality, but is still less attractive to farmers because it is in bulk form. Therefore, it is necessary to carry out training regarding the granulation of sludge into granular organic fertilizer (POG). The long-term goal of this service is fertilizer independence at the farmer level, through the ability of farmers to process surrounding waste into more practical organic fertilizer. The specific target is that the public knows science and technology related to fertilizer granulation and has skills in granulating fertilizer. The methods used are: coordination of the lecturer team with the community regarding training activities, preparation of raw materials, namely sludge and compost made from sludge-coffee husk, socialization and discussion regarding fertilizer granulation science and technology, training in making POG, and evaluation of activities together with the community. Implementation of service begins with coordinating the lecturer team with the community regarding the implementation of activities, continues with the preparation of raw materials and tools with the assistance of residents and students, implementation of training with assistance from students by inviting pekon officials and the community, ending with an evaluation with the community to determine the sustainability of the program. The community is very interested in creating a village business with this organic fertilizer, which in the future can be managed by BUMDes. An obstacle during community service is the difficulty of gathering residents during the day due to various different activities.
PELATIHAN PEMBUATAN GULA SEMUT BERBAHAN BAKAR BIOGAS SEBAGAI UPAYA PENGOPTIMALAN PEMANFAATAN SUMBER DAYA PEDESAAN Damayanti, Sri Ismiyati; Otik Nawansih; Br Ginting, Simparmin; Fajriyanto; Dyah Putri Larassati; Darmansyah; Donny Lesmana; Herti Utami
Nemui Nyimah Vol. 5 No. 1 (2025): Nemui Nyimah Vol. 5 No. 1 2025
Publisher : FT Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/nm.v5i1.165

Abstract

Kegiatan pengabdian bertujuan memperkenalkan dan memberi keterampilan kepada masyarakat terkait produksi gula semut dari nira kelapa berbahan bakar biogas. Target khususnya, masyarakat mampu memasang dan mengoperasikan instalasi kompor biogas industri kecil, serta memiliki keterampilan membuat gula semut dari nira kelapa berbahan bakar biogas. Hal lain yang juga diharapkan adalah berkurangnya jumlah nira yang digunakan untuk produksi tuak karena harga beli nira untuk produksi gula semut akan kompetitif akibat penggunaan biogas “gratis”. Metode yang digunakan adalah : (1) Sosialisasi rencana kegiatan, (2) Pelatihan pemasangan dan pengoperasian instalasi kompor biogas industri kecil, (3) Sosialisasi materi pembuatan gula semut dari nira kelapa mulai dari pemanenan nira hingga pengemasan gula semut yang sesuai standar, (4). Pelatihan dan pendampingan pembuatan gula semut dari nira kelapa serta penyimpanan dan pengemasannya, (5). Evaluasi kegiatan bersama masyarakat. Sasaran kegiatan adalah masyarakat yang mempunyai digester biogas, petani nira kelapa, dan Ibu-Ibu KWT. Lokasi kegiatan di Desa Kediri, Kecamatan Gadingrejo, Pringsewu, Lampung. Peran mitra pengabdian adalah menyiapkan bahan baku nira, menyiapkan stok biogas pada kapasitas maksimal, dan menyediakan tenaga dan konsumsi saat kegiatan. Seluruh kegiatan pengabdian berlangsung lancar. Masyarakat antusias mengikuti kegiatan. Sinergi yang baik juga terjalin antara tim dosen, mahasiswa, dan warga dari mulai persiapan, uji coba, hingga sosialisasi dan pelatihan pembuatan gula semut. Luaran pengabdian telah tercapai yaitu : (1). iptek yang didiseminasikan dapat dikenal, dipahami, dan masyarakat mempunyai keterampilan terkait iptek tersebut, (2). tersedianya 2 unit instalasi kompor biogas industri kecil, (3). Satu buah video kegiatan yang diupload di Youtube, (4). Satu buah poster kegiatan.
Implementation of biogas-based energy security program and evaluation of its sustainability in Kediri village, Pringsewu district, Lampung province Damayanti, Sri Ismiyati; Ginting, Simparmin; Nawansih, Otik; Hudaidah, Siti
ASEAN Journal of Community Engagement Vol. 4, No. 1
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Biogas-based energy security program in Kediri Village, Pringsewu District, Lampung Province, aims to provide awareness and knowledge to villagers about the potential of cow dung to be made into biogas and promote awareness of good environment quality. An evaluation of the sustainability of the program in the community was conducted. The methods that were used in this program are (1) socialization to provide awareness of good environment quality and energy security, (2) digester construction and stove and biogas lamp installation, which was carried out by the community together with certified trainers, (3) creation of a master design of the digester layout to ensure the maximum utilization of the digesters, and (4) evaluation to determine opportunities for program sustainability. Results show that the Biogas-based Energy Security Program has succeeded in making the community aware of and accept and apply the technology of processing cow manure into biogas. Biogas has met 100% of the fuel needs for cooking and electricity of biogas-fed houses. The environment quality has also improved, as shown by clean cages and home environments, and methane emissions have reduced. Over the five-year program, 11 out of 20 planned digesters have been built. The program's future sustainability can be continued by the community, provided that alternative sources of funds that can be pursued by the community are available.
EDUKASI DAN PRAKTIK PEMBUATAN ECO CARBOL SEBAGAI UPAYA PENGURANGAN BAHAN KIMIA SINTETIS DALAM PRODUK KEBERSIHAN SEKOLAH Setiawan, Aris; Ginting, Simparmin Br.; Damayanti, Sri Ismiyati; Febriningrum, Panca Nugrahini; Darmansyah; Darni, Yuli; Tasry, Nazwa Aulia; Sapitri, Refia
Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Vol. 9 No. 3 (2025): Vol. 9 No. 3, November 2025
Publisher : Lembaga Penelitian dan Pengabdian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jss.v9i3.668

Abstract

Kegiatan pengabdian kepada masyarakat ini bertujuan meningkatkan pengetahuan dan keterampilan siswa serta guru SMP Xaverius 1 Bandar Lampung dalam memanfaatkan eco enzyme untuk membuat eco carbol, cairan pembersih lantai alami yang ramah lingkungan. Program ini dilatarbelakangi oleh tingginya penggunaan bahan kimia sintetis pada produk pembersih konvensional yang berisiko terhadap kesehatan dan lingkungan. Pelatihan dilaksanakan pada 22 Agustus 2025 dengan metode partisipatif-edukatif, melibatkan 20 siswa, 4 guru, dan 3 anggota Komunitas Eco Enzyme Sai Bumi Lampung. Kegiatan ini terdiri dari tiga tahap: (1) penyuluhan mengenai dampak bahan kimia dan manfaat eco enzyme, (2) praktik formulasi eco carbol, dan (3) evaluasi serta pendampingan keberlanjutan. Produk yang dihasilkan memiliki karakteristik fisik baik, yaitu cairan homogen berwarna coklat keemasan, beraroma segar, tidak menyebabkan iritasi kulit, dan efektif menghilangkan kotoran serta bau. Hasil kegiatan menunjukkan bahwa kombinasi enzim alami, surfaktan dari getah pinus, dan minyak esensial pinus memberikan efek pembersih dan antimikroba yang optimal. Program ini diharapkan dapat diintegrasikan secara berkelanjutan untuk menumbuhkan perilaku hidup bersih dan ramah lingkungan. Kata kunci: Eco Carbol, Eco Enzyme, Pembersih Lantai Alami, anti mikroba, Ramah Lingkungan.
Co-Authors Anggraeni, Anggi Aris Setiawan Astiti, Dian Fitriani Azhar Azhar br Ginting, Simparmin Chandra Wahyu Purnomo Darmansyah Dewi Agustina Iryani, Dewi Agustina Donny Lesmana Dyah Putri Larassati Fajriyanto Hakim, Rifki Amirul Herti Utami M. Haviz Muhammad Mufti Azis Otik Nawansih Otik Nawansih Panca Nugrahini Febriningrum Ramadhani, Laily Isna Sapitri, Refia Saputri, Yuni Sarto Simparmin br Ginting Simparmin Ginting Siti Hudaidah Sudibyo, Hanifrahmawan Taharuddin Taharuddin Taharuddin Tasry, Nazwa Aulia Wiratni Budhijanto Yuli Darni