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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan METANA Jurnal Teknologi Jurnal Dinamika Penelitian Industri Journal of Research and Technology Jukung (Jurnal Teknik Lingkungan) Jurnal Chemurgy CHEESA: Chemical Engineering Research Articles Indonesian Journal of Chemical Analysis (IJCA) Jurnal Riset Teknologi Industri Jurnal Pengendalian Pencemaran Lingkungan (JPPL) International Journal of Eco-Innovation in Science and Engineering (IJEISE) JITU (Jurnal Ilmiah Teknik Unida) Jurnal Cakrawala Maritim Jurnal Teknologi Maritim Jurnal Cakrawala Maritim Mein: Journal of Mechanical, Electrical & Industrial Technology JURNAL REKAYASA KIMIA & LINGKUNGAN
Novi Eka Mayangsari
POLITEKNIK PERKAPALAN NEGERI SURABAYA
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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Pengembangan Sekolah Hijau Berbasis Pendidikan Lingkungan Hidup Pada Sekolah Menengah Mayangsari, Novi Eka; Pri Astuti, Ulvi; Erlan Afiuddin, Ahmad; Utami Dewi, Tanti; Nindyapuspa, Ayu; Setiani, Vivin; Amelia Novitrie, Nora; Apriani, Mirna; Vita Sophia, Alma
Jurnal Cakrawala Maritim Vol. 7 No. 2 (2024): Jurnal Cakrawala Maritim
Publisher : P3M Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35991/jcm.v7i2.30

Abstract

Permasalahan lingkungan menjadi kepentingan bersama untuk diselesaikan semua elemen masyarakat. Berdasarkan kondisi tersebut, perlu adanya upaya untuk mencegah kerusakan lingkungan, yaitu dengan Pendidikan Lingkungan Hidup (PLH). Sekolah memiliki peranan yang penting dalam penerapan PLH melalui kegiatan sekolah hijau. SMK Negeri 1 Surabaya merupakan salah satu sekolah yang sudah menerapkan kegiatan berbasis sekolah hijau. Namun masih diperlukan pengembangan-pengembangan untuk meningkatkan peran serta dalam pelestarian lingkungan. Sehingga tujuan dari kegiatan ini yaitu dapat dipahami terkait kegiatan yang mendukung sekolah hijau, meningkatkan kualitas sekolah dan lingkungan, dan mengembangkan manajemen sekolah berwawasan lingkungan. Berdasarkan kegiatan ini, dilakukan sosialisasi dengan materi pemanfaatan sampah menjadi kompos, pengelolaan limbah plastik, dan emisi karbon serta implementasinya. Hasil yang didapatkan bahwa SMKN 1 Surabaya sangat antusias dalam mengikuti kegiatan sosialisasi untuk mendukung sekolah hijau, serta memahami materi sosialisasi yang telah disampaikan. Selain itu dilakukan implementasi dari sosialisasi yaitu dengan melakukan pengomposan metode BSF. Pengomposan berhasil dilakukan dan menghasilkan produk berupa pupuk kompos dan larva BSF yang tinggi protein untuk pakan ternak.
Synthesis of a Cellulose/PVA Adsorbent Composite from Pineapple Leaves Waste (Ananas Comosus) for the Degradation of Methylene Blue in Aqueous Solution Mayangsari, Novi Eka; Ramadani, Tarikh Azis; Astuti, Ulvi Pri
Indonesian Journal of Chemical Analysis (IJCA) Vol. 8 No. 1 (2025): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol8.iss1.art6

Abstract

Methylene blue is disastrous for the environment due to their high toxicity. This needs to be mitigated to ensure that the effects can be reduced. Pineapple peel waste (Ananas comosus) can be valorized as cellulose adsorbent and cellulose/PVA adsorbent is a potential solution to minimize the impact of these contaminants. The objective of this research is to investigate the performance of the cellulose/PVA composite in the methylene blue adsorption process and to evaluate its performance with a cellulose adsorbent. The adsorption process results showed that the percentage of MB removal reached 94.03% on the cellulose/PVA adsorbent with 9% NaOH delignification for 90 minutes. After adding PVA, there was a significant increase in the removal of methylene blue in the adsorbent was recorded. The results indicate that cellulose and cellulose/PVA composites are more effective adsorbents than cellulose alone for removing methylene blue.
PENINGKATAN KINERJA PROSES ELEKTROKOAGULASI MELALUI AERASI UNTUK MENGURANGI PARAMETER MINYAK DAN LEMAK DARI INDUSTRI MINYAK KELAPA Ramadani, Tarikh Azis; Azzahro, Annisa; Setiawan, Adhi; Mayangsari, Novi Eka; Dermawan, Denny
Jukung (Jurnal Teknik Lingkungan) Vol 11, No 1 (2025)
Publisher : Program Studi Teknik Lingkungan Fakultas Teknik Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jukung.v11i1.22193

Abstract

Pencemaran air merupakan masalah lingkungan yang sangat penting. Salah satu pencemar air adalah limbah minyak dan lemak dari industri minyak kelapa yang cenderung merusak lingkungan dan menurunkan kualitas hidup masyarakat. Pengolahan air limbah seperti elektrokoagulasi digunakan agar air limbah sesuai dengan peraturan dan menciptakan kehidupan yang berkelanjutan. Elektrokoagulasi digunakan untuk mengolah minyak dan lemak karena memiliki waktu proses yang singkat, memiliki efisiensi yang tinggi dan mudah dioperasikan. Penelitian ini mengevaluasi proses remediasi minyak dan lemak dalam reaktor elektrokoagulasi batch dengan berbagai kerapatan arus dan laju aerasi. Elektroda Al dan waktu kontak 30 menit digunakan dalam reaktor elektrokoagulasi. Minyak dan lemak dapat dihilangkan hingga 99.92% pada kondisi kerapatan arus 8.76 mA/cm2 dan laju aerasi 4.5 L/menit. Proses aerasi yang diterapkan pada proses elektrokoagulasi dipastikan dapat meningkatkan kinerja proses sebesar 13.22% bila dibandingkan dengan tanpa proses aerasi. Proses aerasi dapat memicu peningkatan mekanisme elektrokoagulasi melalui adsorpsi dan penjebakan oleh elektrokoagulan. Proses elektrokoagulasi dengan aerasi mencapai hasil yang meyakinkan meskipun kinerja sistem masih belum sesuai dengan peraturan yang berlaku.
Biokoagulan berbasis Kulit Pisang Kepok untuk Mereduksi TSS dan COD Ramadani, Tarikh Azis; Setiawan, Shinta Dewingga; Astuti, Ulvi Pri; Mayangsari, Novi Eka
METANA Vol 21, No 1 (2025): Juni 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/metana.v21i1.67447

Abstract

Pisang kepok merupakan salah satu makanan yang populer di Indonesia. Pisang kepok memiliki kecenderungan untuk menghasilkan limbah padat yang berdampak negatif terhadap lingkungan. Pemanfaatkan kulit pisang kepok sangat penting untuk mengurangi dampak negatifnya dan memberikan nilai tambah untuk memastikan kehidupan yang berkelanjutan dan ekonomi sirkular. Salah satu cara pemanfaatannya adalah dengan mengembangkan koagulan pektin alami dari kulit pisang kepok. Koagulan alami memiliki keunggulan seperti dapat terurai secara hayati, tidak beracun, tidak korosif, menghasilkan lebih sedikit lumpur namun memiliki nilai gizi yang tinggi dan biaya pengolahan lumpur yang minimal jika dibandingkan dengan koagulan kimia. Pektin digunakan sebagai koagulan alami untuk mengontrol total padatan tersuspensi dan chemical oxygen demand dalam industri laundry skala kecil. Pektin diekstraksi menggunakan asam klorida dan dikarakterisasi. Karakterisasi pektin menggunakan Fourier-Transform Infrared Spectroscopy, kandungan pektin, berat ekuivalen, kandungan metoksi, kandungan asam galakturonat, kandungan air, dan derajat esterifikasi. Proses koagulasi dan flokulasi dilakukan dengan memvariasikan dosis koagulan-flokulan dan waktu pengendapan. Kulit pisang kepok telah berhasil dimanfaatkan untuk mendapatkan pektin sebagai koagulan alami. Pektin terbukti efektif dalam menurunkan chemical oxygen demand dan total suspended solid dalam air limbah industri laundry skala kecil. Meningkatkan dosis pektin dan waktu pengendapan meningkatkan efisiensi penyisihan parameter polutan.  Kepok banana is one of the popular foods in Indonesia. It has tendency to create solid waste that has a negative impact on the environment. It is crucial to utilize kepok banana peel to mitigate its negative impact and add value to a circular economy. One way of utilization is by developing a natural pectin coagulant from kepok banana peel. Natural coagulants have advantages such as being biodegradable, non-toxic, non-corrosive, producing less sludge but high nutritional value and minimal sludge treatment costs when compared to chemical coagulants. Pectin is used as a natural coagulant to control total suspended solids and chemical oxygen demand in the small-scale laundry industry. Pectin was extracted using hydrochloric acid. Characterization of pectin using Fourier-Transform Infrared Spectroscopy, pectin content, equivalent weight, methoxy content, galacturonic acid content, water content, and degree of esterification. The coagulation and flocculation process were performed by varying the coagulant-flocculant dosage and settling time. Banana kepok peel has been successfully utilized to achieve pectin as a natural coagulant. Pectin proved to be effective in lowering chemical oxygen demand and total suspended solid pollutant characteristics in small-scale laundry industry wastewater. Increasing pectin dosage and settling time enhanced the removal efficiency of pollutant parameters.
Synthesis of Magnetic Composites of Chitosan-Fly Ash-Fe3O4 Nanoparticle to Improve Congo Red Dye Adsorption Mayangsari, Novi Eka; Dira Pratiwi, Dewi One; Ashifa, Naura Aqillafasha; Ramadani, Tarikh Azis; Novitrie, Nora Amelia; Nindyapuspa, Ayu; Cahyono, Luqman
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 6 No. 1 (2025): IJEISE
Publisher : UPN Veteran Jatim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ijeise.v6i1.143

Abstract

Chitosan, an environmentally friendly adsorbent, is derived from the deacetylation of crab shell chitin. In this study, the chemical and physical properties of chitosan were enhanced through the direct compositing process of magnetic chitosan (Chi) with fly ash powder particles (FA). This research is of considerable importance in the development of environmentally friendly adsorbent materials for the treatment of wastewater contaminated with synthetic dyes, particularly azo dyes such as congo red. The utilization of crab shell waste as a source of chitosan, in conjunction with fly ash and Fe₃O₄ to form Chi-FA-Fe₃O₄ magnetic composites, has been demonstrated to exhibit considerable promise in enhancing adsorption efficiency. The magnetic composite of Chi-FA-Fe₃O₄ was characterized by XRD and SEM. The present study investigated the effect of adsorption process parameters on CR dye removal. The parameters that were investigated included contact time (30-150 minutes) and initial concentration of CR dye at an adsorbent dosage of 0.06 grams in 100 milliliters and a pH of 4. The maximum removal efficiency of the Chi-FA-Fe₃O₄ composite for CR dye was recorded as 99.82% at an initial concentration of 100 parts per million (ppm) CR dye for 150 minutes. Pursuant to the analysis of XRD, it has been confirmed that the compositing process was successfully executed, thereby yielding 2θ values indicative of Fe₃O₄ and FA. Additionally, an enhancement in the intensity of the Chi-FA-Fe₃O₄ composite was observed following the adsorption of CR dye. Concurrently, SEM analysis revealed that the Chi-FA-Fe₃O₄ composite and the Chi-FA-Fe₃O₄ composite exhibited an augmented intensity.
Effect of Non-Thermal Plasma on Biochar Properties from Sugarcane Bagasse and Banana Peel Dermawan, Denny; Satriavi, Aulia Diva; Nurhidayati, Dyah Isna; Mujiyanti, Dwi Rasy; Novitrie, Nora Amelia; Mayangsari, Novi Eka; Setiawan, Adhi
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 22, No 2 (2025): July 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v22i2.349-359

Abstract

Biochar produced from agricultural waste, such as sugarcane bagasse and banana peel, has gained significant attention owing to its potential environmental and industrial applications. This study aimed to enhance the physicochemical properties of biochar derived from these wastes using nonthermal plasma treatment. Biochar was produced via pyrolysis combined with non-thermal plasma treatment and then characterized to identify the differences. Characterization was performed using X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and–Brunauer–Emmett Teller (Brunauer-Emmett-Teller) surface area analysis to evaluate changes in crystallinity, morphology, functional groups, and surface area. Nonthermal plasma treatment significantly altered the surface morphology of biochar, increasing its porosity and surface area. The BET surface area of sugarcane bagasse waste was 0.061 m²/g, which expanded to 87.50 m²/g after changing to biochar, whereas banana peel waste had a BET surface area of 0.007 m²/g, which increased to 427.2 m²/g after changed to biochar. The pyrolysis process on both biochars also reduced OH (hydroxyl) transmittance, as evidenced by FTIR analysis, which indicated water evaporation. Non-thermal plasma treatment substantially improved the physical and chemical properties of biochar compared to untreated biomass.
Moringa Olifera-Based Magnetic Biocoagulant Application to Mitigate Red Congo Parameters Ramadani, Tarikh Azis; Fatmawati, Meilinda Eka; Mayangsari, Novi Eka; Astuti, Ulvi Pri
MEIN : Journal of Mechanical, Electrical & Industrial Technology Vol. 2 No. 2 (2025): MEIN : Journal of Mechanical, Electrical & Industrial Technology
Publisher : P3M Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35991/mein.v2i2.49

Abstract

The population growth rate has been demonstrated to have a direct impact on the increase in pollutant concentrations released into water bodies. One of the pollutants that has been identified in water bodies is congo red. This necessitates the implementation of effective management strategies to mitigate the adverse effects of pollutants. A methodology that has been demonstrated to be effective in mitigating the impact of congo red is the coagulation-flocculation process. The objective of this study is to employ biocoagulants and magnetic biocoagulants derived from moringa oleifera as mass separation agents to mitigate the adverse effects of congo red. The effectiveness of the mass separation agents was evaluated with varying initial concentrations of congo red. The augmentation of the initial congo red concentration yielded consistent results for both biocoagulants and magnetic biocoagulants. The highest results were obtained at an initial congo red concentration of 100 ppm, with a value of 97.34% for the magnetic coagulant. The coagulation-flocculation process can occur through several mechanisms, including charge neutralization, floc formation, and sedimentation.
Reduksi Zat Pewarna Kongo Merah via Koagulasi-Flokulasi dengan Kitosan dari Cangkang Kepiting Bakau (Scylla serrata) Ramadani, Tarikh Azis; Fajrin, Roihana; Mayangsari, Novi Eka; Astuti, Ulvi Pri
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 6 No. 2 (2024): JPPL, September 2024
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M), Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v6i2.2410

Abstract

The mangrove crab (Scylla serrata) represents a notable component of the Indonesian marine biota. The utilization of mangrove crabs as a food source results in the deposition of shell waste. The shells of these crustaceans contain chitin, which can be synthesised into chitosan. One of the advantages of chitosan is that it can be utilized as a coagulant to reduce congo red dye. This study aimed to evaluate the potential of mangrove crab shell-based chitosan and its performance in the coagulation and flocculation process using the jar test method. The chitosan derived from mud crab shells exhibited a degree of deacetylation (DD) value of 74%. The operating parameters for the coagulation and flocculation process were a coagulant dosage of 25-150 mg/L and a congo red concentration of 100-250 mg/L. The results of the study demonstrate that an increase in coagulant dose results in enhanced treatment performance, reaching a point of saturation where performance declines or stabilizes. Similarly, elevated initial Congo red concentrations also influence the effectiveness of higher coagulation. The removal of congo red dye with the effect of coagulant dose and initial concentration of congo red resulted in a percent removal of up to 99.9% at a coagulant concentration of 150 mg/L and a congo red concentration of 250 mg/L
Co-Authors Adhi Setiawan Adhi Setiawan Agung Nugroho Ahmad Erlan Afiuddin Ahmad Erlan Afiuddin Aisyah Nur Rahmadania Alma Vita Sophia Alma Vita Sophia Am Maisarah Amelia Novitrie, Nora Apriani, Mirna Arianingtyas, Nadya Ayu As-sajdah, Gumelar Muluk Ashifa, Naura Aqillafasha Azzahro, Annisa Bagas Adhiwangsa Bambang Antoko Bella Naziel Iqmalia Bhagaskara Cipta Linuwih Cahyono, Luqman Chelvin Sugiarto Citra Eripramita Yunus Denny Dermawan Denny Dermawan Denny Dermawan Dika Rahayu Widiana Dira Pratiwi, Dewi One Dwi Rasy Mujiyanti Egata Dwi Veptiyan Erlan Afiuddin, Ahmad Fajrin, Roihana Fani Firmansyah Fatmawati, Meilinda Eka Ghea Abbyah Nur Gigih Alam Pambudi Gusma Hamdana Putra Imam Hambali Azhori Indri Santiasih Jannah, Nabillah Rodhifatul Luqman Cahyono Luqman Cahyono Lutfi Wicaksono M. Rizal Fahmi Mirna Apriani Mirna Apriani Mirna Apriani Mitha Amelia Anjani Moch Luqman Ashari Mochammad Choirul Rizal Muhamad Ari Muhamad Ari Nella Maulidiyatul Jannah Ngudyana, Ilham Nindyapuspa, Ayu Novitrie, Nora Amelia Nurhidayati, Dyah Isna Rafi Narariya Ramadhan Rizki Noviana Damayanti Satriavi, Aulia Diva Setiani, Vivin Setiawan, Shinta Dewingga Sophia, Alma Vita Tanti Utami Dewi Tanti Utami Dewi Tarikh Azis Ramadani Ulvi Pri Astuti Utami Dewi, Tanti Utomo, Agung Prasetyo Veptiyan, Egata Dwi Vita Sophia, Alma Vivin Setiani Widiyastuti Widiyastuti