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All Journal Jurnal Dampak Science and Technology Indonesia IJEMS (Indonesian Journal of Environmental Management and Sustainability) Ruwa Jurai: Jurnal Kesehatan Lingkungan Greensusmater
Munandar, Andika
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Physics Public Health

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Studi Kualitas Air Minum dan Pengolahannya di Depot Air Minum Isi Ulang Kota Bandar Lampung (Studi Kasus: Kecamatan Tanjung Karang Timur, Bumi Waras, dan Way Halim) Zamzami, M. Raihan; Azizah, Rifka Noor; Munandar, Andika
Ruwa Jurai: Jurnal Kesehatan Lingkungan Vol 18 No 1 (2024)
Publisher : Poltekkes Kemenkes Tanjung Karang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26630/rj.v18i1.4419

Abstract

Pengolahan air yang tidak efektif berdampak pada kualitas air minum dan membahayakan kesehatan konsumen. Penelitian bertujuan untuk menganalisis kualitas dan pengolahan air minum pada depot air minum isi ulang di Kota Bandar Lampung. Penelitian menggunakan desain studi kasus yang dilakukan pada bulan Oktober 2023 hingga Januari 2024 di tiga kecamatan. Empat depot dipilih secara acak dari setiap kecamatan (N = 23 depo). Observasi dilakukan di setiap depot untuk mengetahui cara pengolahan air minum. Pemeriksaan kualitas air dilakukan terhadap empat parameter yaitu Fe (spectrophotometry), TDS (gravimetry), DHL (ISTA), dan pH. Seluruh data dianalisis secara deskriptif dan dibandingkan dengan peraturan yang berlaku. Hasil pemeriksaan kualitas air menunjukkan nilai TDS berkisar antara 5,0-525,0 mg/L (air minum) dan 90,0-265,0 mg/L (air baku); DHL berkisar antara 10,1- 370,2 ?S/cm dan 171,8- 390,1 ?S/cm; pH pada kisaran 5,4-7,1 dan 5,3-7,2; sedangkan Fe tertinggi sebesar 0,06 mg/L dan 0,03 mg/L. Satu sampel air minum tidak memenuhi persyaratan parameter TDS, dan 18 sampel bersifat asam (pH < 6,5). Mayoritas (82,6%) depot telah beroperasi lebih dari tiga tahun, mengolah air sumur bor dalam (78,3%), dan mencuci tempat penampungan air baku lebih dari sebulan (69,7%). Semua depot tidak melakukan backwash setiap hari. Sebagian besar mengganti media filter setiap lebih dari enam bulan (82,6%), sedangkan membran filter setiap bulan (87,0%). Terdapat satu sampel air minum yang tidak memenuhi syarat TDS (525 mg/L), dan 18 sampel bersifat asam (pH < 6,5). Hal ini dipengaruhi oleh rutinitas pencucian dan penggantian filter, serta penggunaan air tanah dalam.
Chemical Oxygen Demand (COD) and Total Suspended Solid (TSS) Removal from Rubber Wastewater Factory Using Electrocoagulation Technique Munandar, Andika; Nabila, Khairratul; Azizah, Rifka Noor
Indonesian Journal of Environmental Management and Sustainability Vol. 7 No. 1 (2023): March
Publisher : Magister Program of Material Science, Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijems.2023.7.1.27-31

Abstract

Rubber industrial wastewater is obtained during washing, shredding, grinding, crumbbing, drying, and pressing bokar. The wastewater produced can be an environmental pollutant because it contains relatively large amounts of organic matter. One alternative to treating rubber wastewater is to use the electrocoagulation process, which is a combination of the coagulation and electrolysis processes. This electrocoagulation process has several advantages in the form of simple equipment, short time, produces odorless wastewater, does not require large areas of land, and can remove various contaminants in water. In this study, rubber wastewater was treated by electrocoagulation using a batch system with variations in the contact time used, namely 20, 40, 60, 80, and 100 minutes. This type of research is experimental research, and descriptive analysis is carried out. Rubber wastewater is physically gray-black before treatment and chemically contains large organic matter. The results of this study showed that the content of chemical oxygen demand (COD) and total suspended solids (TSS) before processing had values of 691 mg/L and 317 mg/L. Optimum conditions for the elimination of COD and TSS contents were achieved within 80 minutes with the percentage of elimination being 89% and 85%.
Hydrothermal synthesis of Nb2O5-natural zeolite composite for enhanced adsorptive removal of anionic and cationic dye Anastasya, Yohana; Muhtar, Sephia Amanda; Munandar, Andika; Rahayu Saraswati, Ayu; Taher, Tarmizi
Greensusmater Vol. 1 No. 2 (2024)
Publisher : Green and Sustainable Materials Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62755/greensusmater.2024.1.2.63-67

Abstract

The imperative to mitigate dye pollution from wastewater has propelled the exploration of efficient adsorbents. This study deals with the preparation and evaluation of Nb2O5-supported natural zeolite (NbX_NZ) for enhanced dye adsorption performance. A facile hydrothermal method was employed to prepare NbX_NZ with varying niobium precursor loadings. Comprehensive material characterization employing FESEM, EDX, TGA, XRD, and FTIR analyses elucidate the successful incorporation of Nb2O5, revealing altered morphological and thermal properties. The adsorption test exhibited a notable augmentation in adsorption capacity for Congo red dye, particularly with the Nb15_NZ sample, showcasing a nearly two-fold increase compared to the parent natural zeolite. The findings underscore the potential of NbX_NZ as promising materials for anionic dye adsorption, paving the way for advancing wastewater treatment solutions and further investigations into metal oxide-modified zeolites.
High Surface Area Ortho-Nb2O5 as Bifunctional Adsorbent and Photocatalyst for Efficient Removal of Tetracycline Antibiotics from Wastewater Taher, Tarmizi; Maharani, Putri; Muhtar, Sephia Amanda; Munandar, Andika; Sidiq, Ahmad Nur; Rianjanu, Aditya
Science and Technology Indonesia Vol. 10 No. 3 (2025): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.3.916-923

Abstract

The presence of antibiotics in aquatic environments poses significant environmental and health risks, requiring advanced treatment strategies for their removal. In this study, we report the straightforward hydrothermal synthesis of high surface area ortho-Nb2O5  and its dual role as both an adsorbent and photocatalyst for the removal of tetracycline (TC) from wastewater. The structural and  morphological properties of ortho-Nb2O5 were systematically investigated using XRD, FTIR, FESEM-EDS, and BET surface area analysis. The ortho-Nb2O5 synthesized at 72 hours (Nb2O5_72) exhibited a high BET surface area of 242.42 m2/g, mesoporosity, and a bandgap of 3.28 eV, enabling efficient UV-driven photocatalysis. Adsorption studies revealed a high TC removal capacity of 32 mg/g at equilibrium. Under UV irradiation, ortho-Nb2O5 achieved significant photocatalytic degradation of TC.
Application of Batch Electrocoagulation for Pollutant Removal in Tapioca Wastewater: An Environmental Engineering Approach for Sustainable Water Treatment Solutions Fajar, Mutiara; Putra, Afrinaldi; Munandar, Andika; Lutfi Setia Putri, Shabrina; Utami, Resarizki
Dampak Vol. 21 No. 1 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.21.1.15-22.2024

Abstract

Tapioca wastewater is rich in organic compounds, leading to high levels of COD (Chemical Oxygen Demand) and TSS (Total Suspended Solids). When these concentrations exceed regulatory standards, they can cause significant water pollution, which may indirectly affect human health. Therefore, it is essential to treat tapioca wastewater before discharging it into water bodies. Electrocoagulation is a promising treatment method for this purpose, as it can effectively remove contaminants through coagulation, separation, and sedimentation of fine particles using electrical energy. This study evaluated the efficiency of COD and TSS removal from tapioca wastewater using an aluminium electrode with voltage variations of 10, 20, and 30 volts. Initial concentrations of COD and TSS in the untreated wastewater were measured at 641 mg/L and 382 mg/L, respectively. Optimal removal rates were achieved at 20 volts, with reduction efficiencies of 79.5% for COD and 82.7% for TSS. Statistical analysis using ANOVA indicated a significant impact of voltage variations on COD and TSS removal efficiency, with a p-value < 0.05 and an F-value greater than the critical F-value. These findings demonstrate that electrocoagulation, particularly at an optimal voltage of 20 volts, effectively reduces the COD and TSS levels in tapioca wastewater, suggesting its potential application as an environmentally friendly solution for industrial wastewater treatment.
Co-Authors Anastasya, Yohana Azizah, Rifka Noor Fajar, Mutiara Lutfi Setia Putri, Shabrina Muhtar, Sephia Amanda Nabila, Khairratul Putra, Afrinaldi Putri Maharani Rahayu Saraswati, Ayu Rianjanu, Aditya Sidiq, Ahmad Nur Tarmizi Taher Utami, Resarizki Zamzami, M. Raihan