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All Journal TEKNIK Jurnal Pembangunan Wilayah dan Kota Jurnal Ilmu Lingkungan Jurnal Reka Lingkungan BERKALA SAINSTEK Journal of Engineering and Technological Sciences Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Sains & Teknologi Lingkungan JTERA (Jurnal Teknologi Rekayasa) Jurnal Ilmu Alam dan Lingkungan Jurnal Purifikasi Jurnal Abadimas Adi Buana WAKTU: Jurnal Teknik UNIPA Al-Ard: Jurnal Teknik Lingkungan INTEGRITAS : Jurnal Pengabdian Keadilan Berkala Penelitian Hayati JURNAL GEOGRAFIKA (GEOGRAFI LINGKUNGAN LAHAN BASAH) Seminar Nasional Hasil Riset dan Pengabdian (SNHRP) Envirotek : Jurnal Ilmiah Teknik Lingkungan JUARA: JURNAL WAHANA ABDIMAS SEJAHTERA INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Journal of Earth Energy Science, Engineering, and Technology JOURNAL OF WETLANDS ENVIRONMENTAL MANAGEMENT Jurnal Adijaya Multidisiplin Jurnal Teknologi Lingkungan Serambi Engineering Keadilan JURNAL REKAYASA KIMIA & LINGKUNGAN Jurnal Bioteknologi & Biosains Indonesia (JBBI) Jurnal Bioteknologi & Biosains Indonesia
Ratnawati, Rhenny
Department Of Environmental Engineering, Engineering Faculty, Universitas PGRI Adi Buana, Dukuh Menanggal XII Surabaya, 60234, Indonesia
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Reduction of Organic Waste Using Black Soldier Fly Hermetia illucens Larvae (BSF) Technology Putra, Firmanudin Yuga; Ratnawati, Rhenny; Widyastuti, Sri
Jurnal Ilmu Alam dan Lingkungan Vol. 16 No. 2 (2025): Jurnal Ilmu Alam dan Lingkungan
Publisher : Universitas Hasanuddin

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

Abstract

The waste problem is a significant issue faced by developing countries like Indonesia. It is caused by the increasing population and economic growth, leading to a rise in waste generation. The objective of this studi was to examine the efficiency of feed types on the development of BSF larvae in decomposing organic waste and to study the final reduction in organic waste levels after being decomposed by BSF larvae. Three types of processing media reactors were used for a duration of 14 days, with each reactor being treated differently. The M1 reactor the composition of the type of waste given to BSF larvae in the M1 reactor is organic waste, especially rice waste and vegetable waste with a total amount of 5 kg, then 5 kg of tofu waste is added as a change and comparison to the composition of the feed in the M1 reactor. The M2 reactor is organic waste, especially rice and vegetable waste, with a total amount of 10 kg. The M3 reactor is tofu dregs waste with a total amount of 10 kg. This research showed that the conversion efficiency value of feed digested by BSF larvae, in M1 which gets an ECD value of 10.47%, then reactor M2 gets an ECD value of 5.65%, while in the M3 reactor the highest ECD value was obtained with a value of 11.67%. The final water content of organic waste is a range of 53.43-58.49%. The final pH value in the range of 5.90-7.10. The C/N ratio final in a range of 11.92-15.74.
PEMANFAATAN LIMBAH DAPUR UNTUK PEMBUATAN ECO-ENZYME DAN PRODUK TURUNAN ECO-ENZYME DESA MOJORANGAGUNG KECAMATAN WONOAYU KABUPATEN SIDOARJO Febrianti, Aulia Nur; Widyastuti, Sri; Ratnawati, Rhenny; Dano, Gita Hang; Kurniawan, Helminoufal; Latifah, Nabila Fuadah; Rahayaan, Natalia
INTEGRITAS : Jurnal Pengabdian Vol 9 No 1 (2025): JANUARI - JULI
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat - Universitas Abdurachman Saleh Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36841/integritas.v9i1.6256

Abstract

Sampah merupakan masalah lingkungan yang sangat penting, terutama di Indonesia yang menghasilkan sekitar 21,88 juta ton sampah pada tahun 2021, dengan limbah rumah tangga berkontribusi sebesar 70-90%. Pengelolaan sampah rumah tangga, khususnya limbah organik, menjadi prioritas dalam menjaga keseimbangan ekosistem. Desa Mojorangagung di Kecamatan Wonoayu, Kabupaten Sidoarjo, menghadapi tantangan dalam pengelolaan sampah organik, yang sebagian besar berasal dari sisa makanan. Kegiatan pengabdian pada masyarakat ini bertujuan untuk mengembangkan teknologi sederhana dan mudah diterapkan oleh masyarakat untuk mengolah sampah organik menjadi produk bermanfaat. Teknologi yang diterapkan adalah mengolah sampah organik basah menjadi eco-enzyme dan produk turunan eco-enzyme berupa sabun padat. Melalui pendekatan edukasi dan teknologi ramah lingkungan seperti Eco-enzyme, masyarakat diharapkan dapat meningkatkan kesadaran dan partisipasi dalam pengelolaan sampah yang berkelanjutan. Eco-enzyme, yang dihasilkan dari fermentasi limbah organik, berfungsi sebagai pembersih serba guna dan pupuk tanaman yang ramah lingkungan. Hasil penelitian menunjukkan bahwa eco-enzyme tidak hanya mampu mengurangi dampak negatif sampah organik terhadap lingkungan tetapi juga memberikan nilai tambah ekonomi bagi masyarakat. Simpulan dari pengabdian ini adalah edukasi dan kampanye pengelolaan sampah terus ditingkatkan untuk mencapai keberlanjutan lingkungan yang lebih baik.
IPTEK Bagi Masyarakat (IbM) Pembuatan Produk Kewirausahaan Ecospray Hand Sanitizer Berbahan Dasar Eco-Enzym Di Desa Jatikalang Kecamatan Krian Kabupaten Sidoarjo Ratnawati, Rhenny; Pungut; Widyastuti, Sri; Sugito
JUARA: Jurnal Wahana Abdimas Sejahtera Volume 4, Nomor 2, Juli 2023
Publisher : Jurusan Teknik Lingkungan Fakultas Arsitektur Lanskap dan Teknologi Lingkungan, Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/juara.v4i2.16017

Abstract

Residents of Jatilang Village, Krian District, Sidoarjo Regency have waste problems so they do not understand the use of organic waste and do not have the awareness to process this waste into goods that are beneficial to the economy. The purpose of carrying out this community service activity is to increase the knowledge of the Jatikalang Village community to reduce the household organic waste generated and to make Jatilang Village a village that has the superior product Ecotizer (handsanitizer made from ecoenzym) which can support the economy and family income. Implementation this program consists of several stages, namely site survey, preparation of facilities and infrastructure, procurement of tools and materials, counseling on knowledge about eco enzymes, how to make eco enzymes, and making ECOSPRAY. The result of this activity is that the community has an understanding of processing waste and turning it into useful products with a percentage value of up to 90% of the initial conditions. Through this activity the residents of Jatilang Village are able to properly apply waste management and use it to become a product.
REDUCTION OF AMMONIA EMISSIONS FROM THE COMPOSTING OF SLAUGHTERHOUSE SOLID WASTE USING ZEOLITE Ratnawati, Rhenny; Sugito, Sugito
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 3, NUMBER 2, APRIL 2020
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v3i2.5795

Abstract

The process of aerobic composting the slaughterhouse (SH) solid waste generate ammonia emissions. Aim: The objective of this research to study the ability of the adsorbent to use zeolite to reduce ammonia gas emissions during the composting process of SH solid waste. Methodology and Results: Reduction of ammonia emission is conducted during the aerobic composting process which is 50 days. The raw material composition of the composting process used was 100% rumen contents, 60% rumen contents: 40% straw, 50% rumen contents: 50% straw, and 40% rumen contents: 60% straw. Zeolite used in the form of granular size 100 mesh. The result of the research showed that the level of release of ammonia gas emissions during the composting process could be reduced by zeolite. Conclusion, significance, and impact study: The efficiency of reducing ammonia gas emissions using zeolite adsorbents in the composting process of SH solid waste ranges from 98.09 - 99.40% on average. Zeolite is an adsorbent that has high adsorption power because it has many pores and has a high ion exchange high capacity and serves as an absorbent cation that can cause environmental pollution.
HYBRID ANAEROBIC BAFFLED REACTOR FOR REMOVAL OF BOD AND PHOSPHATE CONCENTRATION IN DOMESTIC WASTEWATER Sugito, Sugito; Ratnawati, Rhenny; Afiafani, Herlina
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 1, OCTOBER 2021
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i1.10571

Abstract

Hybrid Anaerobic Baffled Reactor (HABR) is a development technology from the Anaerobic Baffled Reactor (ABR), which was already known as a technology that is successful in treating domestic waste. Aims: The objectives of these studies were to investigate the efficiency of reducing BOD and phosphate levels in HABR with zeolite (ZE) and activated carbon (AC) media. Methodology and Results: HABR reactor made of acrylic material with a size of 90 cm x 20 cm x 30 cm. The reactor designed has 7 compartments, with details the first 5 compartments are suspended growth microorganism reactors and the next 2 compartments are attached growth microorganism reactors. Conclusion, significance, and impact of study: The result of the research showed that the efficiency of reducing BOD concentration in the reactor with ZE and AC media were 59.30% and 65.12%, respectively. The final BOD concentration in the AC reactor is 30 mg/L, this value meets the domestic wastewater quality standard required by East Java Governor Regulation Number 72 of 2013 concerning Wastewater Quality Standards for Industry and/or Other Business Activities. The final BOD concentration in the ZE reactor exceeded the required quality standard with a value of 35 mg/L. The final phosphate levels of the two reactors meet the wastewater quality standards for business and/or laundry activities with a maximum phosphate concentration of 10 mg/L. The final phosphate levels in the ZE and AC reactors were 3.74 mg/L and 8.79 mg/L, respectively. The efficiency of phosphate removal in ZE and AC reactors were 70.58% and 30.87%, respectively.
BIOPLASTIC FROM TAPIOCA STARCH WASTE AND RICE WASTE Widyastuti, Sri; Utomo, Yitno; Firdayanti, Annisa; Ratnawati, Rhenny; Solikah, Umi
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 7, NUMBER 1, APRIL 2024
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v7i1.18775

Abstract

Bioplastic is a plastic that is easily decomposed naturally by the activity of microorganisms without leaving toxic residues because of its that can return to nature. Aim: This study aim to examine the quality of bioplastics from variations of tapioca starch and rice waste raw materials for optimal composition. Methodology and Results: The method used is by mixing the raw material of tapioca starch waste and rice waste with variations in the composition of the material; 100% rice waste, 100% tapioca starch waste, 30% tapioca starch waste: 70% rice waste, 50% tapioca starch waste: 50% rice waste, 70% tapioca starch waste: 30% rice waste. Add 10 mL of glycerol, 30 mL of distilled water, 40 mL of acetate solvent, and 40 ml of 96% ethanol. The product will be tested on a laboratory scale for tensile strength, elongation at break, FTIR tests, and biodegradation according to SNI 7188.7:2016 for the bioplastic category that is easily biodegradable. The result shows that the optimal composition was found in the composition of 100% rice waste raw material with the quality of the tensile strength test results of 3,45 MPa, the value of elongation at break 3,8%, and the value of biodegradation 100%. The resulting bioplastics contain functional groups O-H (hydroxyl) bonded to hydrogen, C-H (alkanes), C≡C (alkynes), esters, simple aromatic compounds, C-O (carboxyl), C=C (alkenes), and hydrocarbons -(CH2)n. Conclusion, significance, and impact of study:  The use of starch to produce biodegradable materials is because it is environmentally friendly, easily degraded, available in large quantities, and affordable, moreover, the bioplastics derived from these waste sources are typically biodegradable, meaning they can break down into natural compounds under certain conditions, reducing environmental pollution.
Leachate Treatment Using Sub-Surface Flow Constructed Wetland by Hippochaetes lymenalis Ratnawati, Rhenny; Permata Sari, Dinda; Mukhtar, Nushron Ali
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 14 No 2 (2024): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.14.2.298

Abstract

Leachate, which comes from waste landfills, contains high levels of organic and inorganic matter. Constructed Wetland technology is a suitable alternative for leachate treatment. This technology is easy to apply, relatively cost-effective, and can achieve optimal reduction results for treating and controlling leachate, thereby reducing its environmental impact. The objective of this study was to treat the BOD concentration and COD in leachate using a Constructed Wetland. Data collection was performed by conducting leachate experiments for Constructed Wetland treatment using Hippochaetes lymenalis plants based on variations in residence time and media height. There was a control group (R1) without any media or plants. The variation combination included R2 (containing 10 cm gravel and 10 cm fertile soil) and R3 (containing 5 cm gravel and 15 cm fertile soil). Residence times were set at 0, 7, 14, and 21 d. This research showed that the reactor with growth media consisting of 10 cm gravel and 10 cm fertile soil had 55% and 85% BOD and COD removal efficiencies, with final BOD concentrations and COD values of 273 mg/L and 1,321, respectively. The reactor with growth media consisting of 5 cm gravel and 10 cm fertile soil had 74% and 95% BOD and COD removal efficiency, with the final BOD concentration and COD at 159 mg/L and 432, respectively.
Bioremediation Greywater using Vermifilter Ratnawati, Rhenny; Nurhayati, Indah; Sutrisno, Joko; Sugito, Sugito
Jurnal Rekayasa Kimia & Lingkungan Vol 17, No 1 (2022): Jurnal Rekayasa Kimia & Lingkungan (June, 2022)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v17i1.25510

Abstract

Vermifilter is a greywater waste treatment by utilizing the symbiosis of earthworms with microbes. Vermifilter is more efficient, simple in design, and easy to maintain. The purpose of this study was to determine the effect of vermibed material on the concentration of BOD5, NH3-N, and DO in greywater waste treatment using vermifilter. The study used four vermifilter reactors (VF) with filtration media for gravel, coconut fiber, rough sand, and vermibed. Reactor VF1 uses a vermibed mixture of mustard greens and cabbage, VF2 sawdust, VF3 banana stalk, and VF4 cow dung. This study provides results that VF1 removal BOD5 90%, NH3-N 98%, and increase DO 164%; FV2 removal BOD5 92%, NH3-N 98%, and increase DO 185%; FV3 removal BOD5 94.5% NH3-N 98.5%, and increased DO 156%; and FV4 decreased BOD5 93%, NH3-N 99%, and increased DO 270%. The media material had no significant effect on the concentration of BOD, NH3-N, and DO.
Treatment for Landfill Leachate Utilize Coagulation-Flocculation Combined with Biofilter Ratnawati, Rhenny; Sugito, Sugito; Khoiriyah, Shobah Fauzul Ula
Jurnal Teknologi Lingkungan Vol. 25 No. 1 (2024)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jtl.2024.3560

Abstract

Air lindi yang dihasilkan dari Tempat Pemrosesan Akhir (TPA) Sampah mengandung bahan organik dan nutrien yang tinggi. Metode koagulasi-flokulasi terpadukan biofilter aerobik-anaerobik merupakan salah satu alternatif teknologi untuk pengolahan air lindi. Penelitian bertujuan untuk mengkaji efisiensi kombinasi koagulan Al2(SO4)3 dan FeCl3 pada proses koagulasi-flokulasi terpadukan biofilter dalam penurunan kadar Biological Oxygen Demand (BOD) dan Total Suspended Solid (TSS) pada pengolahan air lindi TPA. Metode pengumpulan data dilakukan dengan cara metode eksperimen air lindi dengan dua langkah pengolahan, yaitu koagulasi-flokulasi dan dilanjutkan dengan biofilter secara aerobik dan aerobik. Koagulan yang digunakan yaitu aluminium sulfat dan feri klorida dengan variasi komposisi 12 g/L:3 g/L (R.K1), 12 g/L:7 g/L (R.K2), 16 g/L:3 g/L (R.K3), dan 16 g/L:7 g/L (R.K4). Hasil penelitian didapatkan bahwa komposisi koagulan pada K4 mampu menurunkan konsentrasi BOD dengan efisiensi sebesar 87,99% dari konsentrasi 2.331 mg/L menjadi 280 mg/L dan konsentrasi TSS dengan efisiensi 81,48% dari konsentrasi 108 mg/L menjadi 20 mg/L. anfaat dari penelitian ini yaitu menjadi alternatif yang mudah diterapkan untuk menurunkan tingkat polutan pada air lindi agar tidak mencemari lingkungan. Kedepan, masih perlu diupayakan inovasi teknik untuk dapat menurunkan BOD sesuai ketentuan baku mutu. Abstract Landfill leachate contains high organic matter and nutrients. The coagulation-flocculation method integrated aerobic-anaerobic biofilter is one of the technological alternatives for leachate treatment. This research aimed to examine the effect of the combination of Al2(SO4)3 and FeCl3 coagulants on the coagulation-flocculation process integrated with biofilters. The data were collected from two-stage leachate experiments (coagulation-flocculation), followed by aerobic and anaerobic biofilter. The coagulants used are aluminum sulfate and ferric chloride with composition variations of 12 g/L:3 g/L (R.K1), 12 g/L:7 g/L (R.K2), 16 g/L:3 g/L (R.K3), and 16 g/L:7 g/L (R.K4). The results showed that the coagulant composition in K4 was able to reduce BOD concentration with an efficiency of 87.99% from a concentration of 2,331 mg/L to 280 mg/L and TSS concentration with an efficiency of 81.48% from a concentration of 108 mg/L to 20 mg/L. The benefit of this research is that it is an alternative that is easily applied to reduce the level of pollutants in leachate water so as not to pollute the environment. In the future, it is still necessary to seek technical innovations to be able to reduce BOD according to quality standards.
Pengolahan Air Embung Alam Tampungan Hujan Morowudi dengan Kombinasi Pretreatment Geotekstil dan Teknologi Filtrasi Yohanita Anggraini, Viona; Pungut, Pungut; Widyastuti, Sri; Nur Rohim, Imam; Ratnawati, Rhenny
Jurnal Sains dan Teknologi Lingkungan Vol. 17 No. 2 (2025): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol17.iss2.art1

Abstract

There has been an exceedance of water quality standards in the Morowudi Village reservoir. Therefore, treatment using a combination of geotextile pretreatment and filtration is required. The objective of this study is to determine the reduction in turbidity, color, and total coliform concentrations in the Morowudi reservoir water and to identify the most optimal efficiency of each variation in reducing turbidity, color, and total coliform concentrations. The turbidity, color, and total coliform concentrations of Morowudi reservoir water were 84.9 NTU, 251 TCU, and 730,000 CFU/100 mL, respectively. This laboratory-scale study used geotextile pretreatment as the initial filter, followed by filtration. The geotextile pretreatment reactor is a cylindrical tube with dimensions of 40 cm x 50 cm. Treatment is conducted in stages from the geotextile pretreatment reactor to filtration. The filtration reactor has a length of 10 cm, width of 10 cm, and height of 90 cm. In the filtration reactor, variations in the height of silica sand, zeolite, and activated carbon media are tested. In variation 1, the heights of the silica sand, zeolite, and activated carbon media were 30 cm, 20 cm, and 20 cm, respectively. In variation 2, the heights of the silica sand, zeolite, and activated carbon media were 20 cm, 30 cm, and 20 cm, respectively. Based on the research results, in variation 1, the average reduction in turbidity concentration was 19.39 NTU with a reduction percentage of 77.16%, color concentration was 85.40 TCU with a percentage of 65.98%, and total coliform was 2.60%. In variation 2, the average reduction in turbidity concentration was 25.08 NTU with a percentage of 70.46%, color concentration was 98.55 TCU with a percentage of 60.74%, and total coliforms were 633,000 CFU/100 mL with a percentage of 13.29%. The treatment results in this study did not meet the hygiene and sanitation water quality standards.
Co-Authors Achmad Chusnun Ni'am Afiafani, Herlina Ainiyah, Siti Irhayatul Annisa Rifka Alifia Annisa Rifka Alifia Aprilia Talarima Arif Rahman Nugroho Arson, Rudolfus Aulia Nur Febrianti Bangun Wahyu Ramadhan Ika Hariyanto Putra Dano, Gita Hang Dian Majid Diana Evawati, Diana Diyana, Ulfatud F. Faizah Faizah, F. Farikh Akhsanul Hafidhin Fatmasari, Risna Dwi Febrioko, Dwi Firdayanti, Annisa Herlina Afiafani Indah Nurhayati Indah Nurhayati Indah Nurhayati Indah Nurhayati Irnawati Joko Sutrisno Joko Sutrisno Joko Sutrisno Khoiriyah, Shobah Fauzul Ula Kurniawan, Helminoufal Laba, Vinsensius Fereri Laksono Trisnantoro Latifah Mega Latifah, Nabila Fuadah M. Nushron Ali Mukhtar Majid, Dian Mega Tri Yunita Moch. Shofwan Muhammad Al Kholif Muhammad Ilham Habibi Muhammad Indra Ramadhan Muhammah Hilal Nur Anshori Nur Rohim, Imam Nurmasyta Sylviana Priyono Permata Sari, Dinda Permatasari, Nidya Pungut Pungut Pungut Pungut Pungut Pungut, Pungut Purwanto Utomo, Hendra Putra, Firmanudin Yuga Rahayaan, Natalia Risna Dwi Fatmasari Rohim, Imam Nur Sakbanul Lailatul Ulfah Sari, Venny Yunita Solikah, Umi Sri Widyastuti SUGITO Sugito Sugito - Sugito Sugito Sugito Sugito Sugito Sugito Suning, Suning Susilowati Talarima, Aprilia Wahid, Ahmad Wahyuni, Hasri Yitno Utomo Yohanita Anggraini, Viona Yoso Wiyarno Yoso Wiyarno Yulinah Trihadiningrum