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Pemanfaatan Limbah Cangkang Telur Untuk Pembuatan Pupuk Organik Cair dan Karya Mozaik Melalui Kegiatan Sosialisasi Dengan Warga Giri Mulyo RT 22, Kelurahan Karang Joang, Balikpapan Utara Lusi Ernawati; Rizka Ayu Yuniar; Rizka Lestari; Nita Ariestiana Putri
Berdikari: Jurnal Pengabdian Masyarakat Indonesia Vol. 5 No. 2 (2023): Berdikari: jurnal Pengabdian Masyarakat Indonesia
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/bjpmi.05.02.4

Recycled waste management, especially in the Giri Mulyo area, is still less than optimal. Giri Mulyo itself is a community village located in Karang Joang village, North Balikpapan sub-district. Most of the residents of Giri Mulyo work as farmers. Based on information from the surrounding community, there has been a decrease in agricultural yields since the covid-19 pandemic. The decrease in income and the increase in the price of fertilizers sold in the market have forced farmers to reduce the amount of fertilizer applied to their agriculture. Based on these problems, an alternative fertilizer that is more friendly to the pockets of farmers in the Giri Mulyo area is needed. So far, many local people have used food waste to make compost as an alternative to fertilizer. However, this method is considered to take a long time and cause unpleasant odors in their environment and also the durability of compost is still quite low. To overcome these problems, the local community needs to be given socialization about information on making organic fertilizer made from household waste, does not require a long time in the manufacturing process and has a high level of product durability. The basic material used is eggshell waste. Organic fertilizer made from eggshell waste contains a high amount of calcium so that it has a good impact on the maintenance of nutrients in the soil, in line with the increase in plant fertility. In addition to being used as a medium for making liquid organic fertilizer, we also provide training in making mosaic pre-works made from eggshell waste to increase the creativity of local residents. The community service activities began with a location survey and interviews with the partners, Giri Mulyo RT 22 residents and teachers of SDN 012 North Balikpapan, which is located in the same location. Next, socialization on recycling eggshell waste into more valuable products was conducted. The activity ended with the residents involved filling out a questionnaire regarding the community satisfaction survey of the activities carried out. The purpose of this activity is to provide knowledge and insight to the community about making liquid organic fertilizer and mosaic artworks from eggshell waste.

Ecobrick: Pemanfaatan Limbah Botol Plastik Menjadi Kursi di Lingkungan Damai Bahagia Putri, Nita Ariestiana; Maulana, Ibrahim Bintang; Irsila, Belinda; Rahmawati, Devi Nur; Asenda, Pali Hodia; Zulfiqar, Achmad; Nanda, Muhammad Rahul; Wahab, Mohammad Abdul; Akmal, Naufal
Jurnal SOLMA Vol. 13 No. 2 (2024)
Publisher : Universitas Muhammadiyah Prof. DR. Hamka (UHAMKA Press)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/solma.v13i2.15370

Pendahuluan: Limbah botol plastik yang terdiri dari karbon, oksigen, dan hidrogen menjadi masalah lingkungan serius karena penggunaannya yang luas dalam pengemasan dan kurangnya upaya daur ulang, menyebabkan penumpukan di TPA. Metode: Program pengabdian masyarakat di Kelurahan Damai Bahagia, Pantai Belakang Bandara, melibatkan 10 warga dengan pendekatan Forum Group Discussion (FGD). Tahapan kegiatan mencakup survei, sosialisasi, pelatihan, pelaksanaan, serta evaluasi dan monitoring. Hasil: Program ini memperkenalkan metode ecobrick sebagai solusi, yang mengubah limbah botol plastik menjadi bahan konstruksi bermanfaat, mengurangi penumpukan sampah di pantai. Kesimpulan: Metode ecobrick berhasil diterapkan, memungkinkan masyarakat mengolah limbah plastik menjadi produk ramah lingkungan dan bernilai ekonomi, sehingga mengurangi dampak negatifnya.

PENGARUH PARAMETER OPERASI PADA PROSES TRANSESTERIFIKASI MINYAK JELANTAH MENGGUNAKAN KATALIS TULANG SAPI TERHADAP YIELD DAN DENSITAS BIODIESEL Sidabutar, Elizabeth Desfelia Ciciolini; Sujana, I Made Ivan Wijayarta Cakra; Oktavia, Fika Dwi; Putri, Nita Ariestiana; Sari, Martina Puspita
Indonesian Journal of Pure and Applied Chemistry Vol 8, No 2 (2025)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v8i2.96860

This study uses a heterogeneous catalyst derived from bovine bones to examine the effect of calcination temperature, calcination time, and mass catalyst loading on the yield and density of biodiesel synthesized from waste cooking oil. The bones were cleaned, pressure-cooked, dried, ground, sieved, and then calcined at temperatures of 800 °C and 1000 °C for 2, 4, and 6 hours. The transesterification process was conducted at 65 °C for 1 hour with 4% and 6% catalyst loadings by weight of the waste cooking oil. The results showed that a calcination temperature of 1000 °C produced more stable and active catalysts, thus increasing biodiesel yield, especially at longer calcination times. The highest yield of 72.81% was achieved using 6% catalyst calcined at 1000 °C for 6 hours. In contrast, at 800 °C, the yield tended to decrease or remain inconsistent as calcination time increased. The biodiesel density ranged from 0.944 to 0.955 g/mL, slightly higher than the standard value, possibly due to incomplete conversion or residual glycerides. These findings indicate that calcination temperature, calcination time, and catalyst loading play a significant role in the efficiency of biodiesel synthesis using bovine bone catalysts.

Microalgae as A Bioremediation Agent for Palm Oil Mill Effluent: Production of Biomass and High Added Value Compounds Putri, Nita Ariestiana; Dewi, Resti Nurmala; Lestari, Rizka; Yuniar, Rizka Ayu; Ma'arif, Luluk Majidah; Erianto, Ricky
Jurnal Rekayasa Kimia & Lingkungan Vol 18, No 2 (2023): Jurnal Rekayasa Kimia & Lingkungan (December, 2023 )
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v18i2.34018

Palm oil mill effluent (POME) is high strength wastewater obtained from palm fruit processing, which contains high chemical oxygen demand (COD), biological oxygen demand (BOD), and other contaminants. The pollutant load in POME can serve as a source of nutrients for microalgae growth. As a result, the goal of this work was to utilize Spirulina sp. and Nannochloropsis oculata to reduce the nutritional content of POME while producing biomass rich in high-value chemicals. The cultivation was conducted in a batch reactor using various POME fractions (0-20%) under 5,000 lux light intensity and continuous aeration at a temperature of 22-28C and a salinity of 30 ppt for 14 consecutive-days. The results demonstrate that Spirulina sp. produced the most biomass at 15% POME, accounting for 4.670.95 g/L with 0.570.11 1/day of growth rate and 3.33% of COD reduction efficiency. Meanwhile, Nannochloropsis oculata thrived in 20% POME, producing 4.430.36 g/L biomass, 1.180.31 1/day growth rate, and 14.43% COD reduction efficiency. In the proximate analysis. Spirulina sp. and Nannochlorpsis oculata provided 0.87%; 1.11% lipid and 1.03%; 0.86% protein, respectively.

Granulator Performance for Urea Granule Quality: A Study on Material Balance and Recycle Seed Ratio Hidayat, Jefri Pandu; Kusuma, Muhammad Azi; Putri, Nita Ariestiana; Hariyadi, Asful
International Journal of Marine Engineering Innovation and Research Vol 10, No 1 (2025)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i1.22562

Granulation is a critical process in quality of urea fertilizer, particularly their size distribution, significantly affects the product's performance and marketability. Urea synthesis begins with the reaction between ammonia and carbon dioxide, where ammonium carbamate is decomposed to produce urea by granulation process. This research aims evaluate the performance of granulator on urea granule size product quality based on material balance and recycle seed ratio (RSR). The granulator performance in the urea granulation process was evaluated for a production capacity of 3,500 tons/day. The methodology involves data collection from operational records in six days respectively, followed by mass balance analysis and product quality evaluation based on particle size distribution. The analysis revealed a significant deviation between design and actual data. Specifically, the design mass balance indicated a total inlet of 236,726 kg/h and a total outlet of 230,575 kg/h, resulting in a mass deficit of 6,151 kg/h attributed to dust formation and water evaporation. The measured on-size product yield was approximately 98.50% at the outlet, with the desired particle size range of 2–4.75 mm. These findings provide critical insights for process optimization and resource management in urea granulation, emphasizing the need for precise operational control to minimize material losses and ensure product quality compliance with specifications.

Formulating Nutritious Wet Noodles with Spirulina platensis: Exploring Proximate Composition, Antioxidant Activity, and Consumer Preferences Dewi, Resti Nurmala; Panjaitan, Fenny Crista Anastasia; Sumartini, Sumartini; Putri, Nita Ariestiana
Eksergi Vol 22 No 1 (2025)
Publisher : Prodi Teknik Kimia UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v22i1.13697

The incorporation of Spirulina platensis into food products has been extensively explored. In this study, wet noodles were enriched with spirulina at three different concentrations: 1% (P1), 5% (P2) and 10% (P3). Sensory and hedonic evaluations, proximate composition and antioxidant properties were assessed. Overall, formulations P1 and P2 were significantly preferred (p < 0.05) in terms of appearance and aroma compared to the control (P0). Additionally, the texture and taste scores of spirulina-enriched wet noodles were higher (p < 0.05) than those of the control. Among all treatments, P1 emerged as the most favourable formulation (p < 0.05) for aroma, texture, and taste in the hedonic test. Moreover, the spirulina supplementation had significant effect on the protein and fat content (p < 0.05) compared to the control noodles. Furthermore, the antioxidant activity of the spirulina wet noodles increased in a dose dependent manner. The IC50 values for DPPH radical scavenging activity were 339.749 ppm for the control (P0), and 61.473 ppm, 39.965 ppm, and 27.439 ppm for P1, P2, and P3, respectively. These results suggest that fortifying wet noodles with Spirulina platensis not only improves the sensory attributes but also enhances the nutritional quality and functional value.

Granulator Performance for Urea Granule Quality: A Study on Material Balance and Recycle Seed Ratio Jefri Pandu Hidayat; Muhammad Azi Kusuma; Nita Ariestiana Putri; Asful Hariyadi
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 1 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i1.4762

Granulation is a critical process in quality of urea fertilizer, particularly their size distribution, significantly affects the product's performance and marketability. Urea synthesis begins with the reaction between ammonia and carbon dioxide, where ammonium carbamate is decomposed to produce urea by granulation process. This research aims evaluate the performance of granulator on urea granule size product quality based on material balance and recycle seed ratio (RSR). The granulator performance in the urea granulation process was evaluated for a production capacity of 3,500 tons/day. The methodology involves data collection from operational records in six days respectively, followed by mass balance analysis and product quality evaluation based on particle size distribution. The analysis revealed a significant deviation between design and actual data. Specifically, the design mass balance indicated a total inlet of 236,726 kg/h and a total outlet of 230,575 kg/h, resulting in a mass deficit of 6,151 kg/h attributed to dust formation and water evaporation. The measured on-size product yield was approximately 98.50% at the outlet, with the desired particle size range of 2–4.75 mm. These findings provide critical insights for process optimization and resource management in urea granulation, emphasizing the need for precise operational control to minimize material losses and ensure product quality compliance with specifications.

Transforming Tofu Waste into a Growth Medium: Boosting Biomass and Proximate Content of Microalgae Nita Ariestiana Putri; Resti Nurmala Dewi; Rizka Ayu Yuniar; Ranti Amanda Mauliasantri
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 4 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i4.4839

This study explores the potential of tofu waste as a cost-effective alternative growth medium for cultivating Spirulina sp. and Nannochloropsis oculata, addressing the high costs of traditional nutrient media that limit large-scale applications. Despite the nutrient richness of tofu waste, its use as a sustainable growth substrate remains underexplored. This research aims to fill this gap by evaluating the growth performance and nutritional suitability of these microalgae in tofu-based media compared to standard controls. The cultivation process was conducted in a closed photobioreactor system, with harvesting methods including flocculation, centrifugation, and filtration. Results showed that tofu waste media supported biomass production comparable to standard cultivation media, with the highest biomass concentrations recorded at the 20% tofu waste treatment, yielding 0.23 ± 0.05 g L-1 for Spirulina sp. and 0.53 ± 0.2 g L-1 for Nannochloropsis oculata. At this concentration, the final COD levels were 840.84 mg L-1and 825.90 mg L-1, respectively. The lipid and protein contents were 2.44% and 1.71% for Spirulina sp., and 1.21% and 1.50% for Nannochloropsis oculata, respectively. These findings demonstrate that tofu waste can serve as an effective and low-cost growth substrate for Spirulina sp. and Nannochloropsis oculata, promoting circular economy principles within many sectors such as energy, food, and agriculture. This study underscores the potential of waste utilization to enhance the sustainability and economic viability of microalgae cultivation.

Advancing Fucoxanthin Production from Microalgae: A Bibliometric Analysis of Research Trends and Innovations Muhamad Maulana Azimatun Nur; Resti Nurmala Dewi; Faizah Hadi; Tunjung Wahyu Widayati; Danang Jaya; Nita Ariestiana Putri; Siti Fauziah; Alinda Fitrotun Nisya
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 2 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i2.6377

Fucoxanthin has attracted significant public attention due to its extensive bioactive properties, including antioxidant, anti-inflammatory, and anti-obesity effects. This study conducts a bibliometric analysis to assess research trends, key contributors, and scientific progress in fucoxanthin studies. By utilizing data from prominent scientific databases, various bibliometric indicators, such as publication output, citation patterns, and collaborative networks, were analyzed. The analysis reveals a consistent rise in research publications over the past two decades, with significant contributions from countries like Germany, Japan, and China. Additionally, the study identifies leading institutions and influential authors who have significantly impacted the field. The results highlight the expanding interest in fucoxanthin's potential applications in pharmaceuticals, functional foods, and nutraceuticals. Furthermore, the study sheds light on collaborative efforts between academic institutions and industries that drive innovation and commercialization. This comprehensive evaluation not only provides an understanding of the current research landscape but also identifies future directions for scientific exploration and technological advancements. The findings serve as a valuable resource for researchers, policymakers, and industry stakeholders to make informed decisions and foster innovation in the utilization of fucoxanthin for human health and sustainability.

Optimasi formula plasticizer gliserol dan filler carboxymethyl cellulose terhadap kekuatan mekanik pada biodegradable film packaging berbasis pati singkong Munfarida, Siti; Kumalaningrum, Amalia Nur; Putri, Nita Ariestiana; Hidayat, Jefri Pandu; Yuniar, Rizka Ayu; Naibaho, Lasma Barbara
AGROINTEK Vol 20, No 1 (2026)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v20i1.28410

The use of conventional plastics, which are difficult to degrade, has caused serious environmental problems, necessitating alternatives in the form of biodegradable plastics (bioplastics). Biofilms are anticipated to address social issues in line with the 12th SDG goal, namely the management and reduction of packaging waste generated daily. By utilizing abundant local cassava starch, the produced biofilms are anticipated to possess good mechanical properties and low water absorption, making them a potential eco-friendly alternative for food packaging while supporting the use of local resources. This study aims to develop cassava starch-based biofilms as environmentally friendly packaging by optimizing the formulation of carboxymethyl cellulose (CMC) and glycerol. The research employs cassava starch as the primary matrix, CMC as a filler to enhance mechanical properties, and glycerol as a plasticizer to improve the flexibility of the biofilm. The research methods include cassava starch extraction, mixing of materials with stirring and heating, and drying the gel into a biofilm. The biofilm's characteristics were analyzed through tensile strength and elongation tests. The results showed that the formula with a cassava starch concentration of 15 grams, 1% CMC, and 6% glycerol yielded the highest tensile strength value of 1.56 MPa, meeting the Japanese Industrial Standard (JIS) for edible films (≥ 0.392 MPa). The best elongation value reached 199.6%, demonstrating excellent flexibility according to JIS and Indonesian National Standards (SNI). This study indicates that the appropriate combination and concentration of materials can produce biofilms with the potential to replace conventional plastics, support environmental sustainability, and optimally utilize local resources

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