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Maritha Nilam Kusuma
Institut Teknologi Adhi Tama Surabaya
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Studi Redesain Tempat Penyimpanan Sementara (TPS) Limbah B3 sesuai dengan Limbah yang Dihasilkan dan Peraturan Terbaru di PT X Miyana, Ade Wahyu Achmad; Kusuma, Maritha Nilam
Environmental Engineering Journal ITATS Vol 4, No 1 (2024): Environmental Engineering Journal ITATS
Publisher : Teknik Lingkungan, Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.envitats.2024.v4i1.6544

Abstract

PT. X is a private company engaged in the manufacturing of machinery, equipment, and other supplies, located in one of the sub-districts in the western part of Surabaya, with a total land area of 2011,11 m². In accordance with Government Regulation Number 22 of 2021 concerning the Administration of Environmental Protection and Management, one critical activity in the management of hazardous and toxic waste is temporary storage. The purpose of designing a temporary storage facility for hazardous and toxic waste (B3) is to reduce the risk of environmental contamination and safety and health hazards for workers due to the release of B3 waste into the environment. PT. X's industry already has a permit for B3 waste storage with a capacity of 21 m³, having dimensions of 3.1 m in length, 2.7 m in width, and 2.5 m in height, and currently holds permits for only 11 types of waste. Given the existing conditions, there are several types of waste that still do not have storage permits. Since there are some types of waste that are not yet managed, PT. X is undertaking a redesign of the temporary B3 waste storage facility. PT. X manages 26 types of waste, including used lubricating oil, B3-contaminated waste (flammable solids) – seals, gaskets, hydraulic hoses, B3-contaminated waste – used resin, used B3 containers (flammable solids) – used oil containers, thinners, painting sludge, metal powder from grinding processes, used rags, production sludge including manufacturing, assembly, and maintenance, production residues including manufacturing, assembly, and maintenance, soldered PCB cuttings, solder scrap, assembly production sludge, Cathode Ray Tubes (CRT), Printed Circuit Boards (PCB), metal cable and insulation waste, B3-contaminated waste (toxic) – welding wire residue, used B3 containers (toxic) – housekeeping containers and paint containers, wastewater treatment sludge, used TL lamps, electronic waste, incandescent and LED bulbs, used cartridges, used air filters, used ink containers, used batteries, and used accumulators. Therefore, it is necessary to expand the B3 waste temporary storage area to dimensions of 4 meters in length, 5 meters in width, and 3 meters in height.
Identifikasi Keragaman Makroinvertebrata dan Kualitas Perairan Di Kawasan Hutan Mangrove Wonorejo Mahardikha, Emanuel; Kusuma, Maritha Nilam
Environmental Engineering Journal ITATS Vol 4, No 2 (2024): Environmental Engineering Journal ITATS
Publisher : Teknik Lingkungan, Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.envitats.2024.v4i2.7450

Abstract

Keberadaan makroinvertebrata memiliki eksistensi yang penting. Makroinvertberata dapat membantu proses pengurangan polutan air, menjadi makanan untuk biota lainnya dan bisa menjadi bioindikator kualitas air. Melihat pentinganya peran makroinvertebrata terhadap ekosistem mangrove dan kualitas perairan, dengan demikian peneliti akan melakukan penelitian dengan mengidentifikasi keragaman makroinvertebrata sebagai bioindikator yang nantinya akan dibandingkan dengan kualitas perairan di kawasan sungai mangrove Wonorejo. Metode penelitian dilakukan dengan metode ETP dan pengujian di laboratorium untuk kualitas perairan 9 suhu, ph, salinitas, TDS, BOD, COD, Zn dan Cu). Hasil penelitian yang di dapat bahwa untuk kawasan sungai di mangrove Wonorejo masuk ke dalam kriteria tercemar hingga tercemar berat, yang ditandai dengan teridentifikasi hanya ada makroinvertebrata non-EPT dan ditambah dengan tinggingya konsentrasi beban pencemar BOD, COD, Zn dan Cu dengan konsentrasi tertinggi masing-masing sebesar 248 mg/L; 926,8 mg/L; 2,39 mg/L; 1,14 mg/L..
Identifikasi dan Pengendalian Potensi Bahaya di Tempat Kerja (Studi Kasus: Perusahaan XYZ) Doa, Yakobus; Kusuma, Maritha Nilam
Environmental Engineering Journal ITATS Vol 4, No 1 (2024): Environmental Engineering Journal ITATS
Publisher : Teknik Lingkungan, Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.envitats.2024.v4i1.6545

Abstract

Company XYZ is an industry that produces packaging and boxes with a capacity of 32 billion sheets per year. This company uses a lot of chemicals in its production process, which can be a source of hazards. In addition, several machines used in the production process can cause many health and work safety risks. This research aimed to identify and control potential hazards in the workplace by implementing a descriptive method. It investigated the problems through observations, interviews, and literature studies. The results of this study indicated that the production process stage got a risk rating score of 12, classified as a high-risk level. Meanwhile, all of them were classified as medium, with a risk assessment below 12. This company must control high-risk activities by taking immediate actions to reduce the risks until they can be controlled strictly and precisely. It must also conduct workforce development activities in the workplace, beginning with OHS training programs, emergency procedures emergency training, nd rehearsals to increase the company's productivity.
Adsorption Capacity of Magnetic Activated Carbon Derived from Snake Fruit (Salacca zalacca) Seeds to Cd(II): Characteristics and Isotherm Model Kusdarini, Esthi; Budianto, Agus; Kusuma, Maritha Nilam; Atiyatussa'adah, Eva
Reaktor Volume 25 No.1 April 2025
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.25.1.%p

Abstract

Salak seeds are an agricultural waste that has the potential to be converted into magnetic activated carbon (MAC). The resulting MAC can be utilized for wastewater treatment, particularly in the adsorption of heavy metals. This study develops a method for producing MAC by forming activated carbon using a chemical activator without physical activation, chosen to reduce energy consumption. The activated carbon is then modified with Fe3O4 composite to render it magnetic and reusable. The objectives of this study are to 1) determine the optimal chemical activator concentration, 2) characterize magnetic activated carbon, 3) evaluate the adsorption capacity of MAC for Cd(II) in wastewater, 4) obtain an adsorption isotherm model of MAC for Cd(II) using the Langmuir and Freundlich models, and 5) analyze the surface morphology and elemental composition of MAC. Chemical activation was performed using an HCl-H3PO4 mixture with equal concentrations in a 1:1 volume ratio, with variable concentrations of 0.55, 1.05, 1.55, 2.05, and 2.55 M. MAC's characteristics and adsorption capacity were analyzed using proximate analysis, BET, SEM-EDX, and AAS. The results showed that: 1) the optimal HCl-H3PO4 concentration was 2.05 M, 2) MAC contained 1% moisture, 21.88% volatile matter, 38% ash, 39.13% fixed carbon, iodine number of 1218.24 mg/g, surface area of 175.604 m2/g, and an average pore volume of 26.8093 cc/g, 3) MAC adsorbed Cd(II) from wastewater with an efficiency of 80.12 – 87.75%, 4) the Langmuir isotherm model yielded R2 = 0.9847, qm = 35.0877 mg/g, and b = 0.0285 L/mg, whereas the Freundlich model yielded R2 = 0.9729, n = 1.5881, and kf = 7.6701 mg/g, and 5) MAC exhibited evenly distributed pores and contained dominant elements Fe (30.26%), C (29.08%), O (24.59%), Na (11.27%), with traces of Mg, Al, Mo, and Cl.
Analysis of Land Cover Changes to Increase Land Surface Temperature in Surabaya using Landsat Satellite Prayuda, Shanas Septy; Kusuma, Maritha Nilam
Jurnal Meteorologi dan Geofisika Vol. 24 No. 2 (2023)
Publisher : Pusat Penelitian dan Pengembangan BMKG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/jmg.v24i2.968

Abstract

Surabaya has experienced very significant development in the last few decades. Changes in land use will cause the Urban Heat Island phenomenon. This study aims to determine how far the impact of land cover changes on the increase in surface temperature in the Surabaya. The use of Landsat satellite imagery is considered very effective in describing land cover and surface temperature because it has good spatial resolution and long data availability. During 1991 – 2020 there was a significant decrease in the amount of vegetation by 24.3%, decrease in the number of water bodies by 4.9%, and increase in the number of buildings by 29.2%. The average increase in Land Surface Temperatures was 1.40°C between decades 2 and 1, and an increase of 2.19°C between decades 3 and 2. The development of Surabaya began in the city center and then developed mainly in the west and east. The urban development model is consistent with the pattern of land surface temperature changes. Each type of land cover has special characteristics on the value of NDVI, NDBI, and surface temperature. Changes in cover from water bodies to buildings have the highest contribution to increasing the and surface temperature. There was a significant increase in hotspots in decade 3 in Surabaya which indicated an increasingly severe UHI phenomenon.
KAJIAN POTENSI GAS RUMAH KACA DARI SEKTOR SAMPAH DI TEMPAT PEMROSESAN AKHIR SAMPAH (TPA) RANDEGAN, KOTA MOJOKERTO Rini, Titien Setiyo; Kusuma, Maritha Nilam; Pratiknyo, Yuwono Budi; Purwaningrum, Sri Wulan
Journal of Research and Technology Vol. 6 No. 1 (2020): JRT Volume 6 No 1 Jun 2020
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v6i1.145

Abstract

The final disposal of waste generation is a major environmental challenge in urban areas, especially in developing countries. Waste generation in developing countries will continue to grow as seen from the economic growth and changes in the consumptive patterns of the people, where current lifestyles and activities produce quantity of waste quickly. Waste is not only produced from households, but also from public facilities, such as school, institution, health, offices, markets, hotels, restaurants, and industries which later contribute to the generation of waste in the landfill. Waste management activities in landfills can produce various kinds of greenhouse gas emissions. This study aimed to determine the potential for greenhouse gas emissions from the rate of waste generation in Randegan TPA, Mojokerto City according to the parameters of the waste composition. Based on the research results, it was known that emissions generated from household waste amounted to 1.35 Gg CH4 and 3.72 Gg CO2, while non-domestic waste is 0.264 Gg CH4 and 0.728 Gg CO2.
ANALISIS TINGKAT TOKSISITAS LIMBAH PEWARNAAN JEANS MENGGUNAKAN IKAN NILA (Oreochromis niloticus) Caroline, Jenny; Rachmanu Eko Handriyono; Sonia S. Ximenes; Kusuma, Maritha Nilam
Journal of Research and Technology Vol. 5 No. 2 (2019): JRT Volume 5 No 2 Des 2019
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v5i2.339

Abstract

Jeans dyeing is one of the large or small scale industries that produces liquid waste from the coloring process. Liquid waste that enters the water will cause environmental pollution. It is necessary to study about the nature and characteristics of jeans dye wastewater through the toxicity test that refers to USEPA (2000) and OECD (2004) standards. Tests carried out by entering the concentration of certain wastewater in 5 (five) reactors with tilapia fish (Oreochromis niloticus) biota. Preliminary research conducted in 7 day acclimation process and 1 day range finding test. Running process carried out for 96 hours for fish 5 cm. The analysis was carried out every 24th, 48th, 72th and 96th hour for analysis of temperature, pH, DO, and mortality. Heavy metal (Cr) analysis was carried out in fish bodies and wastewater at each concentration. The initial characteristics of jeans stained liquid waste for pH: 7, temperature: 30, 7ºC, DO: 8.5 mg/l, TSS: 1040.0 mg/l; BOD: 137 mg/l; COD: 484.8 mg/l and Total chrome: 3.079 mg/l. The level of LC50 toxicity concentration in tilapia fish fish 5 cm size of 12.59% results obtained from the calculation of probit with excel software. The content of chrome total (Cr) contained in the test biota for 96 hours ranged from 1.03 l/kg to 1.93 l/kg.
Community-Based Waste Management at Al-Rosyid Islamic Boarding School, Mpokdamira Ngumpakdalem Village and Gayam Village, Bojonegoro Regency Muhajirin, Ahmad; Kusuma, Maritha Nilam
SERUNAI Vol. 1 No. 1 (2021): SERUNAI
Publisher : IDFoS Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (713.815 KB)

Abstract

The purposes of this assistance were to increase the capacity of the waste community in managing domestic waste, including communication, coordination and initial assessment of domestic waste management with stakeholders, preparation of a sustainable waste management plan, implementation of provision waste management facilities in the community, the integration of community waste management with stakeholders, implementation of management (sorting and processing of waste). The method used was Participatory Action Research (PAR). The results of the assistance carried out were a change in the pattern of waste management in Mpokdamira, which initially used organic waste as liquid organic fertilizer, and it became solid organic fertilizer with better quality, the existence of waste management activities at the Al Rosyid Islamic Boarding School by maximizing the role of TPD and TPS, able to operate machines with better fuel quality, the emergence of impacts due to changes in clean and healthy living behavior on the environment of each program, as well as increasing the capacity of the waste community in managing domestic waste.
Co-Authors Abdul Latif Abdul Latif Adityo Tri Wicaksono Agus Budianto Ahmad Muhajirin Amrozy Muharamin Ardhana, Inka Muthia Arlini Dyah Radityaningrum At-Thayyibi, Muhammad Hafizhni Atiyatussa'adah, Eva Bagus Yossy Harnawan Baswara Yua Kristama Budisantoso Wirjodirdjo Darma, Dimas Wahyu Surya Dewi, Intan Suksma Dimas Wahyu Surya Darma Doa, Yakobus Ellisa Dwi Syafitri Fadilah, Hana Faizah Gervasius Herry Purwoko H. Refaldin H. Refaldin H. Refaldin, H. Refaldin Hamas Hijrotush Shobriyah Hana Faizah Fadilah Hana Faizah Fadilah Hanik, Siti Umi Helmi Kristiawan Huda, Ahmad Syaeful Inka Muthia Ardhana Intan Suksma Dewi JE Sutanto Jenny Caroline Jenny Caroline Kasianus Kelvin Tanga Kristiawan, Helmi Kusdarini, Esthi Madinah, Safira Aulia Mahardikha, Emanuel Maratus Sholihah Maratus Sholihah, Maratus Miyana, Ade Wahyu Achmad Muchammad Ichsan Muhammad Hafizhni At-Thayyibi Muharamin, Amrozy Musarofa, Musarofa Musarofa, Musarofa Nieke Karnaningroem Nieke Karnaningroem Pratiknyo, Yuwono Budi Prayuda, Shanas Septy Purwaningrum, Sri Wulan Rachmanu Eko Handriyanto Rachmanu Eko Handriyono Revalandro, Gorin Rini, Titien Setiyo Ro'du Dhuha Afrianisa Rodu Dhuha Afrianisa Shanas Septy Prayuda Shobriyah, Hamas Hijrotush Sonia S. Ximenes Sonia S. Ximenes Sri Wulan Purwaningrum Suwanto, Yudha Eka Putra Syafitri, Ellisa Dwi Talent Nia Pramestyawati Talentnia Pramestyawati Tanga, Kasianus Kelvin Wahyono Hadi Ximenes, Livio Xavier Ximenes, Sonia S. Yulfiah Yulfiah Yulfiah Yulfiah Yulfiah, Yulfiah