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All Journal PENDIPA Journal of Science Education JURNAL SAINTIS Journal of Engineering and Scientific Research (JESR)
Mardhotillah, Nur Anisa
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Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Engineering Environmental Science Industrial & Manufacturing Engineering Mathematics

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Karakterisasi Limbah Cair Greywater pada level Rumah Tangga Berdasarkan Sumber Emisi: Greywater Characterization at Household Scale by Emission Source Siti Nurul Khotimah; Nur Anisa Mardhotillah; Nur Arifaini; Sumiharni
JURNAL SAINTIS Vol. 21 No. 02 (2021)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2021.vol21(02).7876

Abstract

[ID] Limbah cair greywater merupakan limbah cair hasil aktivitas dapur, pencucian pakaian dan kamar mandi. Produksi limbah greywater rumah tangga sekitar 70–75% dari total produksi limbah cair rumah tangga dengan kandungan polutan yang rendah. Terkait dengan tingginya volume produksi limbah cair greywater, limbah greywater berkontribusi sekitar 70-80% dalam pencemaran badan air. Namun demikian, volume produksi limbah greywater yang tinggi ini justru dapat dijadikan sumber alternatif baru air bersih jika dilakukan pengolahan limbah dengan baik dan tepat. Di dalam pengolahan limbah greywater ini dibutuhkan data karakteristik agar pengolahanya menjadi tepat. Permasalahannya ketersediaan data karakteristik greywater sangat minim, karena itulah dilakukan penelitian ini. Penelitian ini bertujuan untuk melakukan karakterisasi limbah cair greywater berdasarkan sumber emisinya dengan parameter yang dilihat adalah BOD, COD, TSS, DO, temperature, pH dan turbidity dari masing-masing sumber limbah cair greywater dan juga kondisi limbah yang sudah tercampur dari ketiga sumber limbah. Penelitian dilakukan dengan mengambil sampel sebanyak 12 sampel dari suatu rumah tangga. Dari hasil penelitian menunjukan bahwa limbah dapur merupakan limbah dengan kandungan yang terberat dibandingkan limbah lainnya dari greywater. Kandungan BOD dan COD Dapur menduduki nilai tertinggi dengan nilai 250-1000 mg/L untuk BOD dan 840-3430 mg/L untuk COD. Kandungan BOD dan COD limbah greywater terendah berasal dari limbah kamar mandi dengan kandungan BOD 6-100 mg/L sedangkan kandungan COD 19,4-143 mg/L. Keseluruhan rasio BOD/COD menunjukkan nilai berkisar 0,2-0,5 yang artinya limbah adalah biodegradable. Kadar pH dari keduabelas sampel berkisar dari 4,2-6,5. Kandungan TSS tertinggi berasal dari dapur dengan nilai 202 – 620 mg/L. [EN] Greywater is wastewater generated from kitchen, laundry and bath activities. Its production is about 70–75% of the total household wastewater. Related to the high volume of greywater production, greywater contributes around 70-80% in polluting water bodies. By appropriate treatment, the high volume of greywater production can be used as a new alternative of water source. Unfortunately, the availability of greywater characteristic data is very limited in existence. This study aims to characterize greywater effluent based on its emission source with focus parameters were BOD, COD, TSS, DO, temperature, pH and turbidity from each source of greywater effluent and also the mixed waste conditions from the three waste sources. The study was conducted by taking 12 samples from a household. The results of the study show that kitchen waste is the heaviest pollutant content compared to other waste from greywater. The content of BOD and COD in the kitchen occupies the highest value with a value of 250-1000 mg/L for BOD and 840-3430 mg/L for COD. The lowest BOD and COD content of greywater came from bathroom waste with a BOD content of 6-100 mg/L while the COD content was 19.4-143 mg/L. The overall BOD/COD ratio shows a value ranging from 0.2 to 0.5, which means that the waste is biodegradable. The pH levels of the twelve samples ranged from 4.2-6.5. The highest TSS content comes from the kitchen with a value of 202 – 620 mg/L.
Review: The Use of Eco-Enzymes in Greywater Treatment Khotimah, Siti Nurul; Ginting, Simparmin Br; Arifaini, Nur; Mardhotillah, Nur Anisa; Puligadda, Lohit Krishna Pranav
Journal of Engineering and Scientific Research Vol. 6 No. 1 (2024)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v6i1.169

Abstract

Water pollution such as in rivers has become a concern due to its impact on health and the decreasing availability of clean water. There is a common assumption that industrial pollution is the main cause of water pollution. However, an interesting fact is that river pollution is largely dominated by contamination from household wastewater (domestic waste) discharged directly into drainage systems and ending up in rivers without prior treatment. Such cases are particularly prevalent in developing countries. Therefore, the challenge is to find solutions to treat domestic wastewater using simpler and cheaper technologies. Current research is focused on treating domestic wastewater especially greywater with eco-enzymes. Eco-enzymes are enzymes produced from the fermentation process of organic materials such as fruit peels or vegetable scraps for a minimum of three months. This paper will review the treatment of greywater using eco-enzymes, including the eco-enzyme production process, its characteristics, greywater characteristics, the methods employed, and the research findings. Finally, the paper will recommend possible avenues for further research related to the treatment of greywater using eco-enzymes
The Evaluation of Low-Cost Apartment Building Lampung University (Rusunawa Building) Using Greenship Rating Tools for Existing Buildings Widyawati, Ratna; Kustiani, Ika; Isneini, M; Girinandi, I; Aminudin, KM; Surahman, R; Aini , N; Mardhotillah , AN
Journal of Engineering and Scientific Research Vol. 6 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v6i2.171

Abstract

The assessment of the green building at the Rusunawa Lampung University was conducted using the Greenship Rating Tools for Existing Building Version 1.1. Measurements were carried out to examine the overall sub-criteria of each greenship assessment category. The greenship rating tools for existing buildings version 1.1 are quite complex, as there are 6 (six) feasibility tests and sub-criteria. Based on field measurements and analysis of the green building assessment criteria using the greenship existing building rating tools version 1.1 at the Rusunawa Lampung University, as there used rating score of 17 points. The final result, the Rusunawa Building Lampung University does not have a rating for the Green Building criteria. To achieve a minimum bronze rating, and an assessment of the greenship assessment categories, the parties felt necessary to obtain recommendations for the improvements according to the assessment matrix that can enhance the Green Building rating for Rusunawa Lampung University.
Perancangan Filter Pasif Pada Gardu Traksi di Stasiun Citayam Guna Mengurangi Efek Distorsi Harmonisa Putri Jori, Rahmatika Dwi; Sari, Nurwanda; Desliana, Lulu Syahira; Maulidina, Siti; Mardhotillah, Nur Anisa; Arif, Muhammad Rizki; Aini, Nur Syahidah
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.742-751

Abstract

Electric Rail Trains (KRL) have become the most frequently used transportation mode for daily activities in the community. One of the existing problems within the operation system of Electric Rail Trains (KRL) lies in the current rectification process. During this rectification process, an effect occurs that can cause disturbances in the KRL's electrical system. This resulting effect is the harmonic effect. This study aims to address the problem of power quality degradation in the Electric Rail Train (KRL) at the Citayam Station Traction Substation, which is caused by this harmonic effect. The harmonic effect arises from the process of rectifying alternating current (AC) into direct current (DC) using a silicon rectifier, which can lead to voltage drop, speed reduction, or even the operational stoppage of the KRL.The research method used is quantitative descriptive. The study did not conduct direct measurements but instead used averaged assumption data from three related journals as primary data. The data analyzed were the values of Total Harmonic Distortion (THD) for both current and voltage, particularly focusing on the 5th, 7th, and 11th harmonic orders, which were identified as the highest contributors to the harmonic distortion. To mitigate the harmonics, this study designed a single-tuned passive filter using the ETAP (Electric Transient Analysis Program) software. The design aims to suppress the harmonic distortion, thereby improving the electrical power quality, maintaining the reliability of the traction substation, and optimizing KRL operations. The single-tuned passive filter designed in this research was capable of suppressing harmonics by up to 0.009%.
Co-Authors Aini , N Aini, Nur Syahidah Aminudin, KM Arif, Muhammad Rizki Desliana, Lulu Syahira Girinandi, I Ika Kustiani Isneini, M Maulidina, Siti Nur Arifaini Nur Arifaini Puligadda, Lohit Krishna Pranav Putri Jori, Rahmatika Dwi Ratna Widyawati Sari, Nurwanda Simparmin br Ginting Siti Nurul Khotimah Siti Nurul Khotimah Sumiharni Surahman, R