Ida Ayu Widhiantari
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PEMANFAATAN ECENG GONDOK (Echhornia crassipes) DAN SEMANGGI AIR (Marsilea crenata) DALAM PENGUJIAN EFEKTIVITAS PENGOLAHAN LIMBAH CAIR INDUSTRI TAHU DENGAN METODE FITOREMEDIASI Ida Ayu Widhiantari; Sirajuddin Haji Abdullah; Baiq Purwasetyanegari
Agros Journal of Agriculture Science Vol 25, No 2 (2023): edisi April
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v25i2.2726

Abstract

Tofu liquid waste that is dumped into the river can cause environmental pollution likes physical, chemical and biological changes in the water. Therefore, appropriate tofu liquid waste treatment technology is needed, namely phytoremediation technology. The phytoremediators used were Eichhornia crassipes and Marsilea crenata plants. The purpose of this study was to determine the effect of plant weight on the reduction of COD, BOD, TSS, pH neutralization, and the effectiveness of the phytoremediation method. This research used an experimental method using variations in plant weight (50 g, 75 g, and 100 g). The water quality parameters observed consisted of COD, BOD, TSS, pH, Pollutant Removal Efficiency, Pollutant Concentration Reduction Rate, and Plant Weight. The initial characteristics of tofu liquid waste in this study were: COD 17.000 mg/l, BOD 2.677,28 mg/l, TSS 620,28 mg/l, and pH 4,74. The results showed that the most optimal phytoremediation effectiveness occurred in the W4 treatment (50 g clover water) on the 20th day. The decrease in COD concentration is up to 1.680 mg/l, pollutant removal efficiency is 90,12%, removal rate is 556 mg/day. Decreased BOD up to 182,5 mg/l, pollutant removal efficiency was 93,18%, pollutant removal rate was 57,83 mg/day. Decreased TSS up to 381 mg/l with an efficiency of 38,58%, pollutant removal rate of 33,75 mg/day. And a stable pH value of 6,15. After processing, the values for the COD, BOD, TSS parameters have not met the quality standards but have decreased significantly. While the pH parameter has met the quality standard.Limbah cair tahu yang dibuang ke aliran sungai dapat menyebabkan terjadinya pencemaran lingkungan seperti perubahan fisik, kimia dan biologi di dalam air. Maka dari itu, diperlukan teknologi pengolahan limbah cair tahu yakni dengan teknologi fitoremediasi. Fitoremediator yang digunakan yaitu tanaman Eichhornia crassipes dan Marsilea crenata. Tujuan penelitian ini adalah untuk mengetahui pengaruh berat tanaman terhadap penurunan COD, BOD, TSS, penetralan pH, dan efektivitas metode fitoremediasi. Penelitian ini menggunakan metode eksperimental dengan variasi berat tanaman (50 g, 75 g, dan 100 g). Parameter kualitas air yang diamati terdiri dari COD, BOD, TSS, pH, Efisiensi Penyisihan Pencemar, Laju Penurunan Konsentrasi Pencemar, dan Berat Tanaman. Karakteristik awal limbah cair tahu pada penelitian ini yaitu : COD 17.000 mg/l, BOD 2.677,28 mg/l, TSS 620,28 mg/l, dan pH 4,74. Hasil penelitian menunjukkan, efektivitas fitoremediasi paling optimal terjadi pada perlakuan W4 (50 g semanggi air) pada hari ke-20. Penurunan konsentrasi COD hingga 1.680 mg/l, efisiensi penyisihan pencemar sebesar 90,12 %, laju penyisihan 556 mg/hari. Penurunan BOD hingga 182,5 mg/l, efisiensi penyisihan pencemar  93,18 %, laju penyisihan pencemar 57,83 mg/hari. Penurunan TSS hingga 381 mg/l dengan efisiensi 38,58%, laju penyisihan pencemar 33,75 mg/hari. Serta nilai pH stabil sebesar 6,15. Setelah pengolahan, nilai untuk parameter COD, BOD, TSS belum memenuhi baku mutu tetapi sudah mengalami penurunan yang cukup signifikan. Sedangkan parameter pH sudah memenuhi baku mutu.
Analysis of Thermal Energy in the Drying Process of Taro Tubers (Colocasia esculenta (L.)) using a Rack-Type Dryer Nurul Aen; Rahmat Sabani; Ida Ayu Widhiantari
Jurnal Online Pertanian Tropik Vol. 11 No. 2 (2024): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jpt.v11i2.17286

Abstract

Repok Pidendang Hamlet is one of the hamlets in the Pemepek Village area, Pringgarata District, Central Lombok Regency which has a superior agricultural commodity, one of which is the taro plant. An important problem faced by the people of Repok Pindendang Hamlet is the abundant taro harvest but still lacks in processing, causing taro to spoil quickly. Therefore, it is necessary to process taro that can increase the shelf life and quality of taro. This study aims to analyze the energy balance in the drying process of taro tubers (Colocasia esculenta (L.)) in a rack-type dryer. The method used is an experimental method using an energy equilibrium approach. The material used is taro tubers with a thickness of I mm which will be dried with temperature variations of 40-45°C, 50-55°C and 60-65°C until the moisture content is constant. The results show the amount of heat energy in, useful heat energy, outgoing heat energy, lost heat energy, and the highest number of enthalpy were obtained at 60-65°C temperature treatment, which were 1719.72 kJ, 869.59 kJ, 823.98 kJ, 1693.57 kJ, and 304.82 kJ/kg, respectively. The total efficiency of the drying system during drying using rack-type dryers was obtained at a temperature of 60-65°C of 50.56% and the lowest efficiency was found at a temperature of 50-55°C of 24.26%.
Pendampingan Revitalisasi Alat dan Mesin Pengolahan Kopi di Desa Karang Sidemen Kecamatan Batukliang Utara Kabupaten Lombok Tengah khalil, Fakhrul Irfan; Amuddin; Ida Ayu Widhiantari; Isnaini Puspitasari; Wahyudi Zulfikar; Rosyid Ridho
Jurnal Pengabdian Magister Pendidikan IPA Vol 7 No 4 (2024): Oktober-Desember 2024
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v7i4.9351

Abstract

Karang Sidemen Village, located in North Batukliang District, Central Lombok Regency, has significant potential as a center for high-quality coffee production in Lombok. The village directly borders several forest areas, including Tahura Nuraksa, Community Forest (HKm), Hortipark, and the Rarung Special Purpose Forest Area (KHDK). This availability of resources has led 75% of the community to manage a highly regarded and popular commodity, namely Robusta coffee. Numerous Women’s Farmer Groups and MSMEs manage coffee as a flagship product. Additionally, the village has several attractive locations as tourist destinations. However, this potential has not been fully optimized due to a lack of knowledge and education among farmers and the local community. One factor affecting coffee quality is the equipment and machinery used in the production process. Farmers’ knowledge in operating equipment, maintenance, and proper safety techniques is still not optimal. This is evidenced by the many machines and equipment that are not used in production houses. To address this condition, initiatives are needed to conduct outreach and mentoring activities from academics and practitioners that are inclusive, embracing the entire community. Through outreach sessions, farmers and the local community will be given a deep understanding of the technical operation of coffee processing equipment and machinery. Maintenance techniques and usage according to standard procedures will also be covered. Practical training sessions will enable farmers to improve their skills, ensuring that each stage of equipment and machinery use is carried out correctly, systematically, and with an understanding of basic Occupational Health and Safety (OHS) concepts. By applying the best practices obtained through these outreach and training sessions, farmer groups in Karang Sidemen Village are expected to further improve the quality and quantity of production. This will not only provide direct benefits to farmers but also enhance the competitiveness of the village’s coffee products in both local and international markets. With the support and revitalization of existing equipment and machinery, the local community is expected to become agents of change to achieve higher quality standards, realizing the potential of Karang Sidemen Village’s local coffee.