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All Journal J@TI (TEKNIK INDUSTRI) Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Communications in Science and Technology
Pertiwi Andarani
Industrial Engineering Departement Diponegoro University Jl. Prof. Sudarto, SH Tembalang Semarang 50239 Telp. 0247460052
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Engineering Industrial & Manufacturing Engineering

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OPTIMASI PEMILIHAN LOKASI FASILITAS PENGOLAHAN LIMBAH ELEKTRONIK (E-WASTE) DI INDONESIA DENGAN MODEL ELECTRE III Andarani, Pertiwi; Budiawan, Wiwik
J@ti Undip : Jurnal Teknik Industri Volume 10, No. 1, Januari 2015
Publisher : Departemen Teknik Industri, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (955.801 KB) | DOI: 10.12777/jati.10.1.19-26

Abstract

Limbah elektronik adalah masalah yang muncul di Indonesia karena mengandung bahan yang berpotensi berbahaya. Dalam rangka menciptakan manajemen yang ramah lingkungan dari limbah elektronik, fasilitas yang memadai diperlukan. Tujuan dari penelitian ini adalah untuk memilih lokasi yang optimal untuk mengembangkan fasilitas pengolahan limbah elektronik (FLPE). Pemilihan lokasi yang optimal dilakukan dengan menggunakan metode model ELECTRE III. ELECTRE adalah keluarga metode analisis keputusan multi-kriteria yang berasal di Eropa. Kriteria yang dipilih untuk analisis ini adalah penduduk setempat, penduduk yang dilayani, persentase belanja bulanan, harga rata-rata rumah tangga per unit, populasi pengangguran, status finansial dari penduduk lokal, jarak dari fasilitas yang telah ada, dan jarak dari pelabuhan terdekat. ELECTRE III membutuhkan penentuan tiga ambang batas, yaitu ambang kelalaian (q), ambang batas preferensi (p), dan ambang veto (v) dalam upaya untuk lebih beradaptasi dengan ketidakpastian. Bobot masing-masing kriteria yang ditentukan sesuai dengan kepentingan relatif terhadap kriteria lain. Lokasi optimal untuk FPLE adalah Provinsi Banten berdasarkan model ELECTRE III.   Kata Kunci: limbah elektronik, fasilitas, optimasi, ELECTRE Abstract E-waste is an emerging issue in Indonesia due to its potentially hazardous content and some precious metal. In order to create an environmentally sound management of e-waste, a facility is necessary. The objectives of this study are to to select the optimal location of e-waste dismantling and sorting facility (DSF/FLPE).  The optimal location selection was conducted using the method of ELECTRE III model. ELECTRE is a family of multi-criteria decision analysis methods that originated in Europe. The criteria chosen for this analysis are local population, population served, the percentage of monthly expenditure, average household price per unit, unemployed population, financial status of the local population, distance from existing facilities, and distance from the nearest port. ELECTRE III requires the determination of three thresholds, namely threshold of negligence (q), threshold of preference (p), and the veto threshold (v) in the effort to better adapt to uncertainties. The weight of each criterion was determined according to its importance relative to other criteria. The optimal location for e-waste DSF is Banten Province based on ELECTRE III model. Keywords: e-waste, facility, optimization, ELECTRE
ANALISIS PENGOLAHAN AIR TERPRODUKSI DI WATER TREATING PLANT PERUSAHAAN EKSPLOITASI MINYAK BUMI (STUDI KASUS: PT XYZ) Andarani, Pertiwi; Rezagama, Arya
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 12, No 2 (2015): September 2015
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (743.333 KB) | DOI: 10.14710/presipitasi.v12i2.78-85

Abstract

The exploration and production process of oil and its supporting operations always generates wasteas by-product. If they are uncontrolled, it might decrease the environmental quality. Thus, it isnecessary to manage and treat the waste in order to meet the regulation standard of quality andquantity. PT XYZ is an energy company, particularly oil and gas production, which its productionactivity generate a large amount of waste as well as produced water. Thus, PT XYZ must havefacilities or produced water handling plant which could minimize pollution caused by produced water.PT XYZ already has a system of produced water handling with recycling principle. After oil and waterseparation including water treating at Water Treating Plant (WTP), produced water will be used forsteam injection. This is the part of enhanced oil recovery by steam flooding in Duri Field. Besides,produced water could be used as backwash water at WTP, that is Oil Removal Filter (ORF) and WaterSoftener, which is called brine water. If the produced water and brine water is over load the capacity ofoil enhanced recovery injection, it might be disposed through injection to Disposal Well and there arecertain condition that produced water should be discharged into canal. The objective f this study is toanalyze the performance of a water treating plant in PT XYZ. Water Treating Plant is a facility fortreating produced water. Basically, WTP is on good condition and each unit has high efficiency forseparating oil and water (60-99%). Horizontal velocity at pit #A of API Separator was larger than thedesign criteria. In addition, Water Softeners have efficiency until 99% for the hardness.
Inventarisasi dan Sebaran Emisi Aktivitas Pelabuhan dengan Aermod View Huboyo, Haryono Setiyo; Andarani, Pertiwi; Hadiwidodo, Mochtar
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 15, No 1 (2018): Maret 2018
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1030.095 KB) | DOI: 10.14710/presipitasi.v15i1.31-35

Abstract

Transportasi laut termasuk penyumbang emisi polutan udara baik dari aktivitas pelayaran di laut maupun aktivitas di pelabuhan.Inventarisasi emisi polutan udara sektor transportasi laut masih sangat jarang.Kajian ini dilakukan untuk mengkuantifikasi dan mengestimasi sebaran emisi dari sektor transportasi laut di pelabuhan.Inventarisasi menggunakan data operasional pelabuhan dan faktor emisi sekunder.Sebaran emisi polutan udara dari aktivitas pelabuhan diperkirakan dengan model AERMOD View. Hasil inventarisasi beban emisi dari aktivitas transportasi laut di pelabuhan didominasi oleh aktivitas pelayaran dalam pelabuhan yaitu pada saat approaching time disusul oleh aktivitas mesin bantu saat bongkar muat (berthing time). Aktivitas bongkar muat di darat hanya berkontribusi 1% dari aktivitas mesin bantu saat berthing time.Sebaran emisi polutan udara aktivitas bongkar muat cenderung mengarah ke Barat Laut-Tenggara, sementara sebaran emisi dari aktivitas pelayaran cenderung merata ke sebagian besar area Semarang kawasan tengah dan Utara.
Kesetimbangan Energi dan Manfaat dalam Aplikasi Produksi Bersih di Sistem Pengolahan Limbah Cair Industri Nanas Kaleng Andarani, Pertiwi; Sari, Mega Mutiara; Siallagan, Afni
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 14, No 2 (2017): September 2017
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (79.771 KB) | DOI: 10.14710/presipitasi.v14i2.75-80

Abstract

Industri pengolahan buah umumnya memiliki kadar organik yang tinggi, Salah satunya adalah industri pengolahan nanas. PT Great Giant Pineapple, Lampung, (PT GGP) merupakan produsen nanas kaleng ekspor yang menghasilkan limbah yang berpotensi mencemari lingkungan apabila tidak dikelola dengan baik. Salah satu upaya pengelolaan lingkungan dan perbaikan berkelanjutan, PT GGP berupaya melaksanakan sistem produksi bersih. Produksi bersih merupakan suatu strategi pengelolaan lingkungan yang bersifat preventif dan terpadu yang perlu diterapkan secara terus menerus pada proses produksi dan daur hidup produk dengan tujuan megurangi resiko terhadap manusia dan lingkungan. Tujuan dari penelitian ini adalah untuk menganalisis kesetimbangan energi dan manfaat secara kuantitatif dalam penerapan sistem produksi bersih di sistem pengolahan limbah cair PT GGP. Kesetimbangan energi dianalisis dengan menggunakan indikator NER (Net Energy Ratio) dan NEP (Net Energy Production). Manfaat finansial dari penggunaan kembali sludge juga dievaluasi secara kuantitatif. Dalam produksi biogas jumlah energi input yang dibutuhkan sebesar 1,002 MJ/hari/m3 air limbah, menghasilkan jumlah energi output sebesar 108,587 MJ/hari/m3 air limbah. Sehingga Nilai NER = 108,37 dan NEP = 17,585 MJ/hari/m3 air limbah. Sementara itu, dengan pemanfaatan Sludge atas perusahaan memperoleh keuntungan sebesar Rp 3.326.687.65/hari dan pemanfaatan sludge bawah memperoleh keuntungan sebesar Rp 19.054.592 /hari pada tahun 2015.
ANALISIS HUBUNGAN KEBISINGAN MESIN DENGAN STRES KERJA (Studi Kasus : Mesin TWO FOR ONE TWISTER (TFO) PT. XYZ) Budiawan, Wiwik; Ulfa, Ema Amalia; Andarani, Pertiwi
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 13, No 1 (2016): Maret 2016
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (656.438 KB) | DOI: 10.14710/presipitasi.v13i1.1-7

Abstract

The Two for One Twister (TFO) machine emits very disturbing noise and the noise exposes the workers while performing their tasks. The noise also lead to works stress. So, it is necessary to determine the relationship between the noise and work stress of TFO machine operators. This study  was  conducted  by measuring  the  noise  of  TFO  engine  with  Enviro-meter  and then correlating the noise and work stress with SPSS 16 software. Spearman correlation test results showed that a strong correlation between noise with work stress (p value = 0.042). In order to reduce the noise level that will decrease stress for workers, Fault Tree Analysis was conducted to determine the source of the noise. Based on the qualitative analysis of FTA, the causes of the noise were as follows: the lubricating oil was not applied, seal of oil valve leaked, bearing was not replaced (2 years economic life), the traveler was not replaced (10 days economic life), and the Doubling machine was troubled. Based on the quantitative analysis of the probability of job stress of TFO machine operator due to noise TFO machines from a known probability of 0.041, hence, the system was feasible for use.
PEMANFAATAN LIMBAH TAHU SKALA RUMAH TANGGA MENJADI BIOGAS SEBAGAI UPAYA TEKNOLOGI BERSIH DI LABORATORIUM PUSAT TEKNOLOGI LINGKUNGAN – BPPT Nisrina, Hanifah; Andarani, Pertiwi
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 15, No 2 (2018): September 2018
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (584.615 KB) | DOI: 10.14710/presipitasi.v15i2.139-140

Abstract

Limbah cair yang dihasilkan industri tahu sangat merugikan lingkungan jika tidak dilakukan pengolahan terlebih dahulu. Namun, limbah cair tahu dapat diolah secara anaerob sehingga menghasilkan biogas. Maka dari itu, penelitian ini bertujuan untuk mengetahui besarnya potensi biogas yang dapat dihasilkan dari limbah cair tahu sebagai upaya dalam teknologi bersih serta mengetahui kelayakannya dari aspek ekonomi dan lingkungan. Penelitian dilakukan pada industri tahu skala rumah tangga yang berlokasi di Desa Puspiptek, Tangerang Selatan dengan metode digesti anaerobik. Hasil penelitian menunjukkan bahwa selama waktu tinggal 14 hari, limbah tahu menghasilkan biogas sebesar 1.525 liter dengan penurunan kandungan COD sebesar 8,1% dari 748,75 mg/L menjadi 688,125 mg/L, Total Solid sebesar 56,9% dari 16,36 g/L menjadi 7,049 g/L, dan Volatile Solid sebesar 66,3% dari 14,85 g/L menjadi 5,001 g/L. Hasil analisis simulasi kelayakan biogas berdasarkan aspek ekonomi berupa Harga Pokok Penjualan (HPP) Rp7.342 per kg, BEP 109.500 kg/tahun, dan PBP 0,48 dengan pengolahan limbah tahu sebesar 5676 liter per hari, menghasilkan biogas sebanyak 5,174 m3 per hari. Banyak sekali manfaat yang didapat dari pemanfaatan limbah menjadi biogas, baik dari aspek ekonomi, lingkungan, maupun sosial
Effect of microwave and ultrasonic irradiation on the enzymatic hydrolysis of water hyacinth biomass in the presence of surfactants Rokhati, Nur; Ratnawati; Prasetyaningrum, Aji; Anggraini, Widyah; Nugroho, Akbar; Novita, Nasyriyatul Hana; Andarani, Pertiwi; Riyanto, Teguh
Communications in Science and Technology Vol 8 No 1 (2023)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.8.1.2023.1143

Abstract

This paper presents the effect of microwave and ultrasound irradiation on the enzymatic hydrolysis of water hyacinth biomass in the presence of surfactants. Prior to hydrolyzing, the water hyacinth was treated utilizing alkali with and without microwave assistance. It was revealed that the microwave improved the removal of lignin and hemicellulose. The treated water hyacinth biomass was also characterized using Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), and Fourier-Transform Infrared (FT-IR) Spectroscopy. The effect of surfactant and the assistance of microwave and ultrasound were comprehensively studied. Some parameters varied, including stirring speed, surfactant type, concentration, and reaction time. The results indicated that microwave and ultrasound could enhance the reaction rate. Tween 80 here could improve conventional, microwave-assisted, and ultrasound-assisted hydrolysis of water hyacinth biomass. It was found that the ultrasound-assisted hydrolysis was better than that of others. The results of this research can be used as the groundwork for further developing the lignocellulosic biomass hydrolysis process, especially in an advanced enzymatic hydrolysis process.
An Overview of the Utilization of PET Plastic Bottle Waste for Membrane Fabrication Istirokhatun, Titik; Siahaan, Samuel Ezra; Gonzales, Ralph Rolly; Andarani, Pertiwi; Susanto, Heru; Filardli, Abdullah Malik Islam
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 22, No 1 (2025): March 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v22i1.15-37

Abstract

Plastic use, in this case including plastic drinking water bottles particularly polyethylene terephthalate (PET) has resulted in significant environmental, social, economic, and health repercussions. It will ultimately be deposited in landfills, requiring up to 1,000 years for each individual bottle to degrade. This review begins by briefly introducing the composition and characteristics of PET. It then details the methods for converting waste PET into valuable materials for diverse applications. The review emphasizes advanced uses of these materials in water treatment, highlighting the development of robust, organic solvent-resistant membranes. The primary aim of this review is to evaluate recent studies of PET bottle recycling to membrane technologies, membrane fabrication from PET waste, applications of PET-based membranes, advantages and challenges of using PET waste for membrane fabrication.
Microplastics Removal Strategies in Aquatic Environments Widiyanto, Edhi; Istirokhatun, Titik; Andarani, Pertiwi; Susanto, Heru; Desiriani, Ria; Apriliana, Pamella
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 22, No 3 (2025): November 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v22i3.688-711

Abstract

Microplastics (MPs) have been globally detected in aquatic environments. The abundance of MPs contributed to the negative effects on aquatic ecosystems. Thus, it’s critical to create effective solutions for removing MPs from water. In this review, we compared several methods, including physical, physicochemical, and biological approaches, towards membrane filtration. The physical filtration technology is the simplest way in comparison with other methods. However, the removal ability of physical filtration against smaller MPs than 20 ?m becomes a crucial concern. Then, the other option is an adsorption method. Although the adsorption option is an inexpensive method, the undesirable aspect during adsorbent usage may not be environmentally friendly in aquatic systems. The similar problem is also demonstrated by chemical approaches in terms of coagulation and electrocoagulation treatment. Consequently, the biological methods were found to be less toxic to the environment. Even though it provides safe conditions to the environment, the biological approach needs a long time to degrade MPs. To overcome their disadvantages, the membrane technology offers efficient removal of MPs and no addition of chemical usage. However, the main point to pay attention to is that each technology has benefits and drawbacks. Therefore, the application of multiple technologies for MPs removal is considered. 
Trends and Patterns of Sediment Contamination in Indonesia (1999-2024): A Scientometric Analysis Hanun, Alain Shofia; Budihardjo, Mochamad Arief; Andarani, Pertiwi; Fadhillah, Muhammad Afdhal
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.v22i2.621-632

Abstract

In the current era of the Industrial Revolution, there is a substantial increase in effluents from industrial discharges and domestic waste flowing into the sea, leading to contamination of water bodies. This includes pollutants such as heavy metals (Cu, Pb, and Zn) and microplastics, which eventually settle and contaminate sediments. Research on sediment contamination in Indonesia has been quite numerous and varied, but none has employed the scientometric method to analyze the trend of sediment contamination. Using CiteSpace, this study analyzes trends and patterns in research topics, citation frequency, and publication numbers over the past 25 years, based on co-occurrence, co-word, and co-citation analyses. The study examined 177 research articles indexed by Scopus. Findings reveal substantial international collaboration, with Indonesia leading with 167 publications, Malaysia with 19, and Japan with 15, showing a significant gap. The research spans various subject areas, including Environmental Science (111 articles), Earth and Planetary Sciences (74 articles), and Agricultural and Biological Sciences (55 articles). This study will provide a quantitative and visual overview of sediment contamination research in Indonesia, offering a comprehensive discussion of the findings.
Co-Authors Aji Prasetyaningrum Anggraini, Widyah Apriliana, Pamella Arya Rezagama Desiriani, Ria Ema Amalia Ulfa, Ema Amalia Fadhillah, Muhammad Afdhal Filardli, Abdullah Malik Islam Gonzales, Ralph Rolly Hanun, Alain Shofia Haryono Setiyo Huboyo Heru Susanto Mochamad Arief Budihardjo Mochtar Hadiwidodo Nisrina, Hanifah Novita, Nasyriyatul Hana Nugroho, Akbar Nur Rokhati RATNAWATI Riyanto, Teguh Sari, Mega Mutiara Siahaan, Samuel Ezra Siallagan, Afni Titik Istirokhatun Widiyanto, Edhi Wiwik Budiawan