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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan JPSE (Journal of Physical Science and Engineering) Jurnal Rekayasa Hijau Al-Ard: Jurnal Teknik Lingkungan Specta Journal of Technology Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Journal of Social Research PREVENIRE: Journal of Multidisciplinary Science Jurnal Teknologi Lingkungan Serambi Engineering Frontier Advances in Applied Science and Engineering
Ariani, Ismi Khairunnissa
Institut Teknologi Kalimantan
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Performance of Electrocoagulation Process for Microplastic Fibre Removal from Laundry Wastewater Marita Wulandari; Intan Dwi Wahyu Setyorini; Anggie Melinda Handayani; Ismi Khairunnissa Ariani; Ainun Zulfikar
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 19, No 1 (2022): March 2022
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (521.13 KB) | DOI: 10.14710/presipitasi.v19i1.34-43

Abstract

Laundry wastewater contains not only detergent but also contains fabric fibres and threads. Microplastic fibres have been discovered as a potential source of microplastic fibres in synthetic clothing washed in the environment. To reduce microplastic concentration in wastewater, many approaches have been developed. Electrocoagulation is one of them. Using both synthetic microplastics and laundry wastewater samples, this study examined the performance of electrocoagulation methods to remove microplastics. The flocculation and deposition mechanisms remove microplastic fibre. This research was set up by using a reactor with a volume of 1 L, 60 V of voltage and 60 minutes of contact time. Electrical current of 5A and 10A was applied to remove microplastic fibres during electrocoagulation (EC). The removal efficiency of polyester fibre was 55-68 per cent for 60 minutes with a current of 5A and 42-85 per cent for 60 minutes with a current of 10A. Polyamide fibre removal efficiency in 60 minutes is 53 per cent to 74 per cent at 5A current and 57 per cent to 72 per cent at 10A current. According to this study, it can be concluded that EC can remove microplastic fibre from laundry effluent.
Evaluasi Pewadahan Sampah Berdasarkan Perilaku Masyarakat (Studi Kasus: Kelurahan Karang Rejo Kota Balikpapan) Nia Febrianti; Ismi Khairunnissa Ariani; Muhammad Rizqiawan Antul
Al-Ard: Jurnal Teknik Lingkungan Vol. 9 No. 1 (2023): September
Publisher : Department of Environmental engineering, Faculty of Science and Technology, Islamic State University Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/alard.v9i1.1773

Abstract

Transfer Station is one of the most important parts of waste management operational aspects. The condition of Transfer Station container is often neglected whether it meets the standards based on SNI 19-2454-2002 and Minister of Public Works Regulation Number 3 of 2013 concerning waste containers. The container of Transfer Station can be seen from the characteristics of it such as the shape, nature and material. Waste problems in Karang Rejo Village are caused by several factors such as the decrease in quality, the distribution of Transfer Station points, and community’s behaviour in disposing the solid waste. This study aims to analyze the distribution and provision of Transfer Station, analyze community behavior in disposing of waste and evaluate Transfer Station in Karang Rejo Village based on community behavior in waste disposal. This research is a qualitative research, the research procedures carried out are observation, identification of the provision and distribution of Transfer Station, analysis of Transfer Station conditions in a descriptive qualitative way, distribution and collection of questionnaires, data processing and the evaluation stage of waste containers according to people's behavior in disposing of waste. The results showed that in Karang Rejo Village there were 16 Transfer Station units where the distribution of it, was disproportionate, in terms of supply there were 8 out of 16 Transfer Station units whose buildings were in damaged condition (percentage <60%), 99% of the behavior of the Karang Rejo Village community in disposing of garbage by how to get off the vehicle and throw garbage into the Transfer Station and 90% of the Karang Rejo Village community did not know information about waste containers. The evaluation results showed that the Transfer Station in Karang Rejo Village was not in accordance with the standards and there were 10 units that required total renovation, and 6 units requires the addition of components such as lids on containers.
Evaluasi dan Pemilihan Desain Alternatif Instalasi Pengolahan Limbah Cair Industri Tahu-Tempe Sona Putri Siswoyo; Ismi Khairunnissa Ariani; Basransyah; Bayu Nur Abdallah; Eka Masrifatus Anifah
Jurnal Serambi Engineering Vol. 9 No. 3 (2024): Juli 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The processing of tofu and tempeh produces solid waste and wastewater. Tofu and tempeh wastewater with high organic content must be treated to prevent environmental pollution. Therefore, the tempeh and tofu industry centre in East Kalimantan developed a wastewater treatment plant (WWTP) to treat the wastewater.However, the quality of the effluent still did not meet wastewater quality standards. In addition, the production of tofu and tempeh is increasing every year, so the amount of wastewater is also increasing. This study aims to evaluate and select alternative WWTP designs for tofu and tempeh wastewater. The WWTP design uses an anaerobic digester for wastewater treatment and combines it with three alternative aerobic treatments, including aerobic treatment, wetland and aerated lagoon. The design selection is based on removal efficiency, land area, and operating and construction costs using the Analytical Hierarchy Process method. Based on AHP, the selected design was the WWTP of the second alternative with wetlands. The selected design had a bar screen, an equalisation tank, an anaerobic digester and a wetland. This selected design had a BOD removal efficiency of 96%, COD of 92%, TSS of 88% and a land area of 12,524.20 m2 with a construction cost of IDR 4,330,301,632 and an operating cost of IDR 179,664,945.
Analysis Of Rainfall Characteristics In Balikpapan City Based On Data From Balikpapan Meteorological Station Riza Hudayarizka; Ismi Khairunnissa Ariani
Journal of Multidisciplinary Science Vol. 1 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Institut Studi Islam Sunan Doe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58330/prevenire.v1i3.94

Abstract

This study objected to finding the best-fit probability distribution method using four distributions: Normal Distribution, Gumbel Distribution, Log Normal Distribution, and Log Pearson Type III Distribution. According to the score of the goodness-of-fit test, Log Pearson Type III was selected as the best-fit probability distribution. Design rainfall and rainfall intensity were also calculated for the return period of 2 years, 5 years, 10 years, 15 years, and 25 years. In relation to the rainfall intensity, the IDF curve was created. The IDF curve shows higher intensity in the first 5 hours of rainfall, and then the trend decreases gradually. Moreover, it shows that the higher the return period, the higher the rainfall intensity. The movement of curves is essential for designing drainage, flood intensity, and planting period.
Study of Cassava Peel Biomass and Spent Bleaching Earth (SBE) as Raw Material for Refused Derived Fuel (RDF) Hudayarizka, Riza; Anifah, Eka Masrifatus; Sholikah, Umi; Ariani, Ismi Khairunnissa; Wijaya, Siti Iniz Khairunisa
JPSE (Journal of Physical Science and Engineering) Vol 9, No 1 (2024): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Cassava, a widely used raw material in Indonesia's food industry, amounted to 14.9 million tons in 2022. Typically, cassava peel, comprising 2-5% of the plant, is discarded in landfills or left untreated. However, recent research suggests its potential as a source of refuse-derived fuel (RDF), given its high calorific value of 4253 kcal/kg and 12.55% fixed carbon. Another potential RDF source is spent bleaching earth (SBE), a by-product of oil treatment, containing 20-40% oil. This study explores the impact of different compositions of cassava peel, SBE, and various binders on RDF characteristics. Binders like tapioca flour, durian seed, and rejected papaya were tested in ratios ranging from 70:20:10 to 90:0:10. The findings reveal that the 90:0:10 composition with rejected papaya binder yielded RDF with the highest calorific value and volatile matter content. Specifically, RDF from 90% cassava peel exhibited a calorific value of 5320 kcal/kg, fixed carbon of 13.9%, volatile matter of 80%, ash content of 5.7%, and moisture content of 0.3%. These results meet Indonesia's RDF standards, which mandate a calorific value above 3000 kcal/kg and volatile matter between 50-80%.
Adsorption of Phosphate in Synthetic Laundry Wastewater using Empty Palm Oil Fruit Bunch Ariani, Ismi Khairunnissa; Anifah, Eka Masrifatus; Hudayarizka, Riza; Paramita, Fika
JPSE (Journal of Physical Science and Engineering) Vol 9, No 1 (2024): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

The laundry wastewater contains phosphates that can lead to eutrophication. Treatment of laundry wastewater with phosphate concentration can be done physically or chemically. The adsorption method was selected due to its high efficacy, and economical operation. Activated carbon derived from Empty Palm Oil Fruit Bunch (EPOFB) biomass waste was utilized as the adsorbent, leveraging its lignocellulosic components such as cellulose, hemicellulose, and lignin, that can adsorb pollutants. This study aims to assess the impact of adsorbent dosage and contact time on the adsorption capacity and phosphate removal efficiency. The activated carbon was produced from EPOFB via carbonization and activation processes at 400°C and KOH 6M. The variables including adsorbent dosage and contact time, ranging from 0.2 to 1.0 g/100mL and 20 to 100 minutes, respectively. Results indicate that the adsorbent dosage affects phosphate removal from synthetic laundry wastewater, while contact time does not significantly impact removal efficiency. The highest removal efficiencies of 67.37% and 70.03% were achieved at optimal doses of 8 g/L and 10 g/L, respectively, with contact times of 20 and 80 minutes. The isotherm model and kinetics of phosphate adsorption onto synthetic laundry wastewater using EPOFB adsorbent were identified as Freundlich and pseudo-second order, respectively.
Pengaruh Kemiringan dan Diameter Tube Settler terhadap Kinerja Unit Sedimentasi Novemi, Ramsiska; Ariani, Ismi Khairunnissa; Anifah, Eka Masrifatus
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 8, No 3 (2024)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v8i3.251-262

Abstract

AbstrakUnit sedimentasi yang bekerja tidak optimal mengakibatkan rendahnya kualitas efluen.. Oleh sebab itu, modifikasi diperlukan dengan cara menambah tube settler di zona pengendapan untuk meningkatkan efisiensi IPAL. Penelitian ini bertujuan untuk menganalisis pengaruh kemiringan dan diameter tube settler pada proses sedimentasi terhadap kualitas efluen. Penelitian dilakukan secara kontinu menggunakan reaktor sedimentasi dengan debit aliran 94,44 L/jam dan waktu detensi 3 jam. Variabel yang digunakan yaitu kemiringan (40°, 55°, dan 70°) dan diameter (4, 6, dan 8 cm). Semakin besar diameter dan kemiringan tube settler semakin rendah efisiensi penyisihan TSS dan kekeruhan. Efisiensi penyisihan TSS yang paling tinggi yaitu pada kemiringan 55° dan diameter 4 cm sebesar 57,14%. Efisiensi penyisihan kekeruhan yang paling tinggi yaitu pada kemiringan 70° dan diameter 6 cm sebesar 86,84%. Penambahan tube settler pada unit sedimentasi dapat meningkatkan efisiensi penyisihan TSS sebesar 60%, sehingga terjadi peningkatan kualitas efluen IPAL. Kata kunci: air limbah, kekeruhan, sedimentasi, total suspended solid, tube settlerABSTRACTAn inefficient sedimentation process deteriorates effluent quality in WWTP. Tube settler integration to the clarification zone is required. The research aims to determine the effect of the tube settler slope and diameter on the sedimentation unit efficiency. The experiment was conducted in a continuous sedimentation reactor with a flow rate of 94.44 L/hour and a detention time of 3 hours. The slope is 40°, 55°, and 70°, and the diameter is 4, 6, and 8 cm. The larger the diameter and higher slope of the tube settler, the lower the TSS and turbidity removal efficiency. The highest TSS removal of 57.14% was obtained at the slope 55° slope and a diameter of 4 cm. The tube settler with a slope of 70° and a diameter of 6 cm demonstrated the highest turbidity removal of 86.84%. The tube settler increased the TSS removal efficiency by 60%. Keywords: sedimentation, total suspended solid, tube settler, turbidity, wastewater 
Analisis Variasi Ukuran Partikel Biomassa Cangkang Kelapa Sawit dan Tandan Kosong Kelapa Sawit (TKKS) terhadap Karakteristik Refuse Derived-Fuel (RDF) Riza Hudayarizka; Wulandari, Agustina; Ariani, Ismi Khairunnissa; Yorika, Rahmi
SPECTA Journal of Technology Vol. 8 No. 3 (2024): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v8i3.1212

Abstract

Energy consumption in Indonesia is still mostly dependent on fossil fuels like coal, leading to their gradual depletion. Therefore, there is a need for environmentally friendly alternative energy sources from biomass waste, such as Refuse Derived-Fuel (RDF). Biomass waste with a high calorific value, like palm kernel shells and empty palm kernel bunches (EFB), is promising as RDF raw material. The size of the particles affects the characteristics of RDF because it impacts the structure and composition of RDF pellets. The tested composition ratios of palm kernel shells, EFB, and adhesives were (90:0:10), (80:10:10), (70:20:10), (60:30:10), and (50:40:10), with particle sizes of 60, 80, and 100 mesh. The RDF characteristics evaluated included moisture content, ash content, volatile matter, fixed carbon, and calorific value. The best RDF composition was found to be 70% palm kernel shells, 20% empty palm kernel bunches, and 10% adhesive at a particle size of 60 mesh, resulting in a moisture content of 5.2%, ash content of 4.64%, volatile matter of 78.89%, fixed carbon of 9.64%, and a calorific value of 4404.32 cal/g. XRD analysis indicates that RDF contains amorphous carbon, silica, and, with the addition of EFB, contributes to the potassium content. SEM analysis shows that larger particle sizes of the raw material form larger pores in RDF compared to smaller particle sizes.
Coagulation-Flocculation of Tofu Wastewater using Natural Coagulant of Chempedak (Artocarpus integer) Seed Anifah, Eka Masrifatus; Sholikah, Umi; Ariani, Ismi Khairunnissa; Yorika, Rahmi; Raharti, Henny Widya
Jurnal Teknologi Lingkungan Vol. 25 No. 2 (2024)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jtl.2024.1678

Abstract

Limbah cair tahu mencemari badan air dan menyebabkan bau tidak sedap di lingkungan. Koagulasi-flokulasi adalah metode efektif untuk menyisihkan kontaminan di limbah cair tahu karena metode ini memiliki efisiensi tinggi dan kebutuhan energi rendah. Namun, penggunaan koagulan kimia menghasilkan lumpur yang berbahaya, sehingga koagulan dari bahan alami lebih disukai karena aman untuk lingkungan dan manusia. Penelitian ini bertujuan menganalisis potensi ekstrak biji cempedak untuk menyisihkan COD, TSS, dan kekeruhan pada limbah cair tahu. Biji cempedak diekstrak menggunakan n-heksana dan NaCl untuk meningkatkan karakteristik koagulan. Eksperimen dilakukan secara batch menggunakan jar-tes. Dosis yang digunakan adalah 1,5–4 mL/L dengan pengadukan cepat 120 rpm selama 3 menit, pengadukan lambat 60 rpm selama 15 menit, dan sedimentasi 60 menit. Hasil penelitian menunjukkan bahwa koagulan biji cempedak dapat menurunkan kekeruhan dan TSS, tetapi meningkatkan konsentrasi COD. Gugus fungsi hidroksil dan karboksil memegang peranan penting dalam proses koagulasi. Kenaikan dosis koagulan dapat meningkatkan efisiensi penyisihan kekeruhan dan TSS. Dosis berlebih dapat menyebabkan resuspensi yang meningkatkan kekeruhan air. Dosis optimum untuk menyisihkan kekeruhan dan TSS di limbah cair tahu adalah 2,5 mL/L pada pH 9 dengan efisiensi penyisihan 78%. Efisiensi penyisihan TSS sebesar 77% didapatkan pada dosis 3,5 mL/L. Abstract The tofu wastewater contaminates water bodies and causes unpleasant odors to the environment. Coagulation-flocculation is an effective method to remove contaminants because of its high removal efficiency and low energy requirement. However, the use of chemical coagulants generates a significant amount of toxic sludge. Thus, a natural coagulant is more favorable because it is biodegradable and safe for human health. The objective of this study is to analyze the performance of chempedak seed extract to remove chemical oxygen demand (COD), total suspended solids (TSS), and turbidity in tofu wastewater. Chempedak seed was extracted using n-hexane and NaCl to improve the coagulant characteristics. The experiment was conducted in the batch system using a jar test apparatus. The experiment was carried out on a dosage range of 1.5–4 mL/L with a flash mixing rate of 120 rpm for 3 minutes, slow mixing of 60 rpm for 15 minutes, and sedimentation for 60 minutes. The result proved that the chempedak seed coagulant could reduce turbidity and TSS but increase COD concentration. The hydroxy and carboxy functional groups play a crucial role in coagulation activity. The increasing coagulant dosage increased the removal efficiency of turbidity and TSS. Overdosing can influence resuspension conditions that increase final turbidity. The optimum dosage to remove turbidity and TSS in tofu wastewater was 2.5 mL/L at a pH of 9 with a removal efficiency of 78%. The TSS removal efficiency of 77% was achieved at a dosage of 3.5 mL/L.
Pemanfaatan Hasil Biokonversi Limbah Organik sebagai Pupuk Organik Cair untuk Pertumbuhan Tanaman Miana Noor Hayati, Rina; Chandra S. Rahendaputri; Ariani, Ismi Khairunnissa; Dellangi, Inri Lestari
SPECTA Journal of Technology Vol. 9 No. 1 (2025): Vol. 9 No. 1 (2025): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i1.1215

Abstract

Efforts to reduce organic waste can be done by recycling waste through utilization into liquid organic fertilizer. One of the efforts to process organic waste can be done by Black Soldier Fly (BSF) maggot. This study was conducted with the aim of seeing the ability of liquid organic fertilizer (POC) produced from leachate from bioconversion carried out by BSF, on the growth of miana plants (Plectranthus scutellarioides). This research is an experiment with qualitative and quantitative data analysis methods. The research was conducted by giving two different POCs. Sample A used 100% commercial organic fertilizer and sample D used POC with a ratio of bioconverted organic fertilizer to commercial liquid fertilizer (3:1). Both samples still could not meet the quality standards of nutrients (NPK) and C-organic. However, the sample with the ratio of bioconverted organic fertilizer and commercial liquid organic fertilizer (3:1) or sample D is the optimum sample, with nutrients (NPK) reaching 0.438% and C-organic reaching 4.58%. The results of the application proved that plants with sample D showed the best growth in terms of the number of leaves that reached 14 strands and plant height reached 13 cm in week 8.
Co-Authors Agustina Wulandari Ainun Zulfikar Anggie Melinda Handayani Anifah, Eka Masrifatus Basransyah Bayu Nur Abdallah Chandra S. Rahendaputri Dellangi, Inri Lestari Hanifah , Althofina Hawwa Intan Dwi Wahyu Setyo Rini Marita Wulandari Mochammad Purwanto Muhammad Rizqiawan Antul Muhammad Rizqiawan Antul Nia Febrianti Nia Febrianti Noor Hayati, Rina Novemi, Ramsiska Paramita, Fika Raharti, Henny Widya Rahmi Yorika Raudiah Tuzzahra Putri Rebecca Olfin Liery Any Ris Dinda Anggraeny Riza Hudayarizka Sholikah, Umi Sitanggang, Yusril Bahri Sona Putri Siswoyo Wijaya, Siti Iniz Khairunisa Yorika, Rahmi