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INDONESIA
Jurnal Dampak
Published by Universitas Andalas
ISSN : 25975129     EISSN : 18296084     DOI : -
Core Subject : Social, Engineering,
Engineering Environmental Science
Jurnal Dampak merupakan publikasi bidang lingkungan hidup yang bersifat ilmiah, dapat berupa hasil penelitian, aplikasi teknologi tepat guna atau ide penyelesaian terhadap permasalahan lingkungan hidup yang ada. Naskah belum pernah dipublikasikan dalam media lain, atau naskah sedang dalam proses review dan/atau menunggu untuk diterbitkan di media lain.
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Articles 14 Documents
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Search results for , issue "Vol. 22 No. 2 (2025)" : 14 Documents clear
Analisis Data Variabel Iklim Mikro Dengan Menggunakan Statistik Deskriptif (Studi Kasus Pemukiman Kelurahan Kampung Lapai Kecamatan Naggalo Padang) Nelvidawati; Surtia Bachtiar, Vera
Dampak Vol. 22 No. 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.22.2.83-95.2025

Abstract

Urban areas are vulnerable to the urban heat island (UHI) phenomenon. The analysis of microclimate parameters is one of the important steps to understanding environmental dynamics on a local scale. This study aims to analyze microclimate parameters such as temperature, humidity, wind speed, heat intensity of sunlight, and rain intensity measured for 5 (five) consecutive days. The analysis carried out was a descriptive statistical analysis. The analysis of the concentration of variable temperature and high sunlight intensity data resulted in urban heat islands in residential areas because the roofs used were zinc. Zinc could absorb heat, increasing the temperature during the day if it is not raining. The sun's intensity began to peak from 09.00 WIB to 12.00 WIB. The occurrence of rain can reduce the temperature and intensity of sunlight and increase humidity so that there are no urban heat islands in residential areas that can affect thermal comfort. Other microclimate variables, such as wind speed and rainfall, do not have an impact because wind speed is relatively slow and rainfall is moderate. The analysis of the data spread seen from the standard deviation shows that the data tends to be homogeneous. Large data ranges occurred at the variables of temperature, humidity, and sunlight intensity, showing significant variations. Wind speed and precipitation have a small range, indicating the weather's stability at the observation site at the time of measurement. The average population estimated to have a confidence level of 95% is almost the same as the average sample, indicating that the data obtained is close to the actual condition.
The Pengaruh Penambahan Sekam Padi Pada Pembuatan Pelet Biomassa Eceng Gondok Menggunakan Metode TOSS: Pengaruh Penambahan Sekam Padi Pada Pembuatan Pelet Biomassa Eceng Gondok Menggunakan Metode TOSS Dewilda, Yommi; Goembira, Fadjar; Andini Putri, Zalwa; Noerhidayat, Arief
Dampak Vol. 22 No. 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.22.2.20-30.2025

Abstract

ABSTRACT The Teknologi Olah Sampah di Sumbernya (TOSS) method can be an alternative to reduce biomass waste such as water hyacinth. The TOSS method converts water hyacinth waste into biomass pellets through three stages: shredding process, biodrying process, and pelletization process. Water hyacinth waste has a low calorific value so it is necessary to add other materials with higher calorific values such as rice husks. This research was conducted using TOSS method, incorporating AR124 bioactivator in biodrying process and the addition of rice husk during the pelletization process. This research aims to analyze and evaluate the biodrying process of water hyacinth waste using AR124 bioactivator through measurements of moisture content, temperature, shrinkage, odor, and duration of the biodrying process. In addition, the study also analyzed and evaluated the quality of water hyacinth biomass pellets without and with the addition of rice husk based on proximate analysis and calorific value according to the quality standards of SNI 8966: 2021 about Refused Derived Fuel (RDF) for Power Plants. The 10-day biodrying process showed a moisture content of 20.1%, pH 7.0, shrinkage of 3 cm, highest temperature of 29°C on the first day, and no odor since day 5. Variations in the ratio between water hyacinth and rice husk, namely D (1:0), A1 (1:1), A2 (1:2), and A3 (1:3), were tested in triplicate. The results showed that all variations met the quality standards in accordance with SNI 8966:2021. A3 was the best variation with a moisture content of 3.11%, ash content of 17.83%, fixed carbon of 16.68%, volatile substances of 62.39%, and calorific value of 16.92 MJ/kg (4,041 kcal/kg). The addition of rice husk is proven to increase the calorific value of biomass pellets from standard class 3 to class 2 according to SNI 8966:2021. Keyword: bioactivator AR124, biomass pellets, rice husks, teknologi olah sampah di sumbernya (TOSS), water hyacinth
Fikoremediasi Pb Dengan Variasi C:N Oleh Mikroalga Dunaliella sp. Jihan Luthfiyah, Al Fatih Fadhilah; Harmin Sulistyaning Titah
Dampak Vol. 22 No. 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.22.2.104-112.2025

Abstract

Pada era global industri ini ditemukan air tercemar bersumber dari aktivitas pertanian,peternakan,industri,perhotelan yang memiliki nutrien tinggi dan kandungan logam berat Pb mencapai 1 mg/L. Hal ini akan berdampak pada makhluk hidup seperti gangguan saraf, gangguan fisiologis dan kematian. Penerapan teknologi remediasi oleh mikroalga sudah diterapkan dalam penyisihan Pb. Akan tetapi perlu dipertimbangkan keseimbangan rasio nutrisi C:N yang terkandung pada media air tersebut. Perbandingan nutrisi karbon dan nitrogen digunakan mikroalga dalam kebutuhan sumber energi dan sintetis protein. Penggunaan mikroalga hijau Dunaliella sp. adalah solusi yang dipilih dalam penerapan remediasi air tercemar Pb sebesar 76-80%. Uji rasio C:N sangat penting untuk memastikan bahwa kondisi pertumbuhan mikroorganisme optimal dan nutrisi terpenuhi. Variasi rasio C:N yang digunakan penyisihan Pb 1 mg/L adalah 100:7,100:13,100:32 dengan variasi intensitas cahaya 2000,4000,6000 lux. Variabel respon dari percobaan ini adalah penurunan kadar Pb,kepadatan sel mikroalga, pH, suhu,CO2, salinitas, dissolved oxygen, dan konsentrasi bikarbonat diamati selama 14 hari. Sebelum dilakukan percobaan 14 hari dilakukan propagasi. Kepadatan sel menggunakan hemositometer dan konsentrasi Pb menggunakan Spektrofotometer Serapan Atom. Hasil dari pengujian variasi rasio nutrisi C:N didapatkan rasio C:N seimbang dan optimal dalam penyisihan Pb pada mikroalga Dunaliella sp. 77% pada rasio C:N 100:32 intensitas cahaya 6000 lux. Dunaliella sp. menghasilkan kepadatan sel pada rasio tersebut mencapai 535,43 x10.000 sel/mL dengan laju pertumbuhan rata-rata 4,80 sel/mL/hari pada parameter kondisi lingkungan mendukung. Kata Kunci: Dunaliella sp.,Fikoremediasi,Pb, Rasio C:N
Nano-MgO Synthesis and Characterization using MgCl2 via Precipitation Method Rizal, Moh Najib; Nurhayati, Ervin; Tangahu, Bieby Voijant; Bhakti, Lingga Manunggal
Dampak Vol. 22 No. 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.22.2.31-41.2025

Abstract

This study examined the synthesis of nano-MgO via a precipitation method involving technical-grade magnesium chloride (MgCl2) as the starting material and ammonium hydroxide (NH4OH) as the precipitating agent. The objective of this study was to fine-tune the synthesis procedure by altering the concentration of NH4OH (0.5% and 1%) and to assess the properties of the resulting nanoparticles in terms of their suitability for applications. The properties of the synthesized nano-MgO were identified using X-ray fluorescence (XRF), X-ray diffraction (XRD), iodine number adsorption, and Brunauer-Emmett-Teller (BET) analysis to evaluate the oxides content, minerals formed and the crystallinity, adsorption capacity, surface area, and porosity. The findings show that, compared to 1%, a concentration of 0.5% NH4OH produced a superior MgO. A nano-MgO with 87.1% purities (of dominantly periclase phase), with an average crystallite grain size of 11.383 nm was formed. The iodine adsorption capacity of 243.01 mg/g, BET surface area of 43.4298 m2/g, and average pore diameter of 9.0002 nm were achieved, indicating formation of nanoporous structure, well-suited for a wide range of industrial use. Whereas when using 1% NH4OH, the purity only reached 83% (of the same dominant phase) with an average crystallite grain size of 11.691 nm, and iodine number of 197.98 mg/g. This research findings indicate that the precipitation method using 0.5% NH4OH is the effective method for producing high-quality nano-MgO from technical grade precursor with improved adsorption capabilities and suitability for large-scale fabrication. Keywords: Nano-MgO, Precipitation, Characterization
Adsorption of Low-Phosphate in Water Using Commercial Fe-based Adsorbents Faris, Salman; Nurhayati, Ervin
Dampak Vol. 22 No. 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.22.2.113-122.2025

Abstract

Phosphate contamination in aquatic environments has become a serious issue due to its role in eutrophication, leading to excessive algal growth and degraded ecosystems. Anthropogenic activities such as agricultural runoff and wastewater discharge significantly increase phosphate concentrations. Among treatment technologies, adsorption using iron-based adsorbents has shown high efficiency, especially at low concentrations. However, performance is influenced by adsorbent type, particle size, and hydrodynamic conditions. This study evaluated the phosphate adsorption performance of Granular Ferric Hydroxide (GFH) and Bayoxide E33 with particle sizes of 74–149 µm, 37–74 µm, and <37 µm. Batch experiments were conducted with 0.3 mg P/L phosphate solution. The isotherm study was performed over 180 minutes, and the kinetics study extended to 240 minutes. Surface morphology was characterized by SEM, and specific surface area was analyzed using BET, which confirmed that smaller particles exhibited higher surface areas. Results showed that GFH <37 µm achieved the highest adsorption capacity of 7.5 mg/g, while Bayoxide <37 µm reached 6.18 mg/g. The Langmuir model best described the isotherm data, and the Pseudo Second-Order model indicated chemisorption as the dominant mechanism. These findings underscore the importance of optimizing particle size to enhance phosphate removal. Keyword: Adsorption, Bayoxide, GFH, Particle Size, Phosphate
Valuasi Ekonomi Dampak Lingkungan Pengeboran Sumur Minyak Anggana, Kalimantan Timur Jami'atul Hikmah; Agus Mardyanto, Mas
Dampak Vol. 22 No. 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.22.2.65-82.2025

Abstract

Penelitian ini mengkaji dampak lingkungan dan sosial-ekonomi dari kegiatan pengeboran sumur minyak di Desa Kutai Lama, Kecamatan Anggana, Kalimantan Timur. Nilai Total Economic Value (TEV) dari dampak lingkungan diperkirakan mencapai Rp 10,2 Milyar per sumur. Survei WTA mengindikasikan besarnya nilai kompensasi yang harus dibayarkan perusahaan selama sumur beroperasi sebesar Rp 15,2 Milyar per sumur sebagai ganti rugi atas kerugian yang dialami masyarakat. Fokus utama penelitian adalah evaluasi kualitas air, udara, dan tutupan flora serta valuasi ekonomi dampak yang ditimbulkan. Metode yang digunakan meliputi pengukuran parameter kualitas lingkungan, inventarisasi vegetasi, serta metode Replacement Cost Method (RCM) dan Contingent Valuation Method (CVM) untuk menghitung biaya pemulihan ekosistem dan estimasi kompensasi sosial-ekonomi. Data kualitas air, udara, dan vegetasi dianalisis dan dibandingkan dengan baku mutu yang berlaku, sementara data sosial-ekonomi diperoleh melalui survei Willingness to Accept (WTA) dari 100 responden di lima RT terdekat lokasi pengeboran. Hasil penelitian menunjukkan penurunan kualitas air dan udara serta berkurangnya keanekaragaman vegetasi akibat aktivitas pengeboran. Kesimpulannya, kegiatan pengeboran memberikan dampak signifikan yang memerlukan pengelolaan lingkungan yang ketat dan pemberian kompensasi terstruktur untuk menjaga kesejahteraan masyarakat dan kelestarian ekosistem sekitar.   Kata Kunci: Contingent Valuation Method, Dampak Lingkungan, Kalimantan Timur, Pengeboran Sumur Minyak, Replacement Cost Method, Valuasi Ekonomi, Willingness To Accept
Uji Kinerja Membran Nanofilter dalam Menurunkan Kekeruhan dan TDS pada Pengolahan Air Minum Alfianita, Julia
Dampak Vol. 22 No. 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.22.2.123-133.2025

Abstract

Kali Jagir merupakan salah satu anak Sungai Brantas, memiliki peran penting sebagai sumber air baku untuk PDAM Surya Sembada Kota Surabaya. Lokasi di hilir menjadikan Kali Jagir menjadi tempat akumulasi bahan pencemar yang berasal dari segmen hulu dan tengah. Aktivitas di sepanjang Sungai Jagir yang meliputi sektor domestik dan industri turut menyumbang bahan pencemar yang mengakibatkan parameter seperti Kekeruhan dan TDS memiliki konsentrasi yang tinggi. Penelitian ini bertujuan untuk menganalisis kinerja membran nanofiltrasi dan menganalisis pengaruh operational time, penggunaan biofilter sebagai pretreatment, perbedaan recovery rate dan jenis membran pada rangkaian reaktor membran nanofiltrasi dalam menurunkan parameter Kekeruhan dan TDS pada pengolahan air minum. Air baku diolah terlebih dahulu diolah menggunakan koagulan Al2(SO4)3 yang kemudian diumpankan menuju biofilter (slow sand filter) dengan kecepatan filtrasi 0,4 m/jam sebagai pretreatment sebelum diolah menggunakan membran nanofiltrasi. Membran nanofiltrasi yang digunakan yaitu dengan recovery rate 30% dan 60%. Jenis membran yang digunakan adalah NF30-2514 dan NF90-2514. Rangkaian reaktor dioperasikan secara intermittent selama 10 hari dengan tekanan 60 psi. Analisis pengujian sampel pada parameter Kekeruhan dan TDS berdasarkan Permenkes RI No. 02 Tahun 2023. Kinerja Membran Nanofiltrasi dalam pada pengolahan air minum dengan rejection rate tertinggi pada unit B1R2M2 dengan nilai kekeruhan pada hari ke-4 yaitu 88,25% dan TDS sebesar 73,78% pada hari ke-10. Kata Kunci: biofilter, kekeruhan, nanofiltrasi, recovery rate, TDS
Studi Kasus Pengolahan Air PLTU Y 1×660 MW dengan LCA Ilham Satria Raditya Putra; Arie Dipareza Syafe'i
Dampak Vol. 22 No. 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.22.2.50-64.2025

Abstract

Water treatment plays a vital role in supporting coal fired power plant operations. This process influences the quality of demineralization water used as boiler feed water and cooling media. Furthermore, the post-treatment process before discharge into water bodies also determines the extent of environmental impact. This study presents a Life Cycle Assessment (LCA) of a coal-fired power plant’s water treatment. The study aims to evaluate the environmental impacts of the water treatment process, including chemical usage and waste management as a by-product from the treatment of water quality, and also determine the process point with the significant impact. These steps include defining the purpose and scope, inventorying and assessing life cycle impacts, and interpretation. Through an approach using the CML IA Baseline and ReCiPe 2016 Midpoint, the impact assessment focused on the effects that influence the sustainability of terrestrial and aquatic ecosystems such as marine aquatic ecotoxicity, human toxicity, and other impacts. The impact assessment indicates that the significant environmental impact is influenced by chemicals, especially the coagulant and hazardous waste such as used oil and used hazardous packaging. This influences the high environmental impacts such as marine aquatic ecotoxicity, terrestrial ecotoxicity, human carcinogenic toxicity, and global warming potential. The implementation strategy of environmental programs is carried out, such as the substitution of FeCl3 to Al2(SO4)3, reuse of used hazardous packaging, and processing used oil into vehicle oil. This study can provide an overview for similar industries in optimizing power plant water treatment processes towards sustainable operations.   Keyword: environmental program, life cycle assessment, risk management, water treatment
Kemampuan Unit Koagulasi-Flokulasi untuk Menurunkan Total Fosfat dan COD dalam Pengolahan Air Sungai Menggunakan Koagulan Fe2(SO4)3 dan Al2(SO4)3 Muhamad Ruby Syahputra
Dampak Vol. 22 No. 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.22.2.147-155.2025

Abstract

Sungai merupakan salah satu sumber daya air yang memiliki peran penting dalam kehidupan manusia. Namun, meningkatnya pencemaran akibat limbah domestik, industri, dan pertanian telah menyebabkan penurunan kualitas air sungai, termasuk Sungai Jagir yang merupakan bagian dari Sungai Brantas di Kota Surabaya. Sungai Jagir yang termasuk dalam bagian DAS Kali Surabaya menampung beban pencemaran domestik di sepanjang kali sebesar 75.48 ton per hari. Salah satu parameter utama pencemaran adalah tingginya kadar Chemical Oxygen Demand (COD) dan total fosfat, yang berkontribusi terhadap fenomena eutrofikasi dan peningkatan beban pencemar organik disebabkan oleh dekomposisi alga yang menurunkan kadar oksigen dalam perairan. .Penelitian ini bertujuan untuk menganalisis efektivitas proses koagulasi-flokulasi dalam menurunkan kadar Chemical Oxygen Demand (COD) dan total fosfat dengan koagulan ferri sulfat Fe2(SO4)3 dan aluminium sulfat Al2(SO4)3. Proses pengolahan dilakukan dengan susunan reaktor koagulasi-flokulasi, lalu ke bak sedimentasi untuk diendapkan. Data yang diuji dan dianalisis meliputi sumber air baku meliputi air baku musim panas dan air baku musim hujan, jenis koagulan meliputi koagulan ferri sulfat Fe2(SO4)3  dan aluminium sulfat Al2(SO4)3, dan gradien kecepatan pada unit koagulasi meliputi 802,2  dan 701,48  . Analisis sampel parameter COD menggunakan metode spektrofotometer uv-vis dan parameter total fosfat menggunakan pada EPHA Method 365.3. Hasil yang didapatkan pada persentase efisiensi penyisihan rata-rata pada parameter COD menggunakan air baku musim hujan, terdapat koagulan Al2(SO4)3 dengan gradien kecepatan 701,48 , Al2(SO4)3 dengan gradien kecepatan 802,2 , koagulan Fe2(SO4)3  dengan gradien kecepatan 701,48 , Fe2(SO4)3  dengan gradien kecepatan 802,2 , secara berturut-turut 22.03%, 30.51%, 60.7%, dan 68.4%. Kemudian pada air baku musim panas secara berturut-turut 65.40%, 70.48%, 83.3%, 88.1%. Hasil yang didapatkan pada persentase efisiensi penyisihan rata-rata pada parameter total fosfat menggunakan air baku musim hujan, terdapat koagulan Al2(SO4)3 dengan gradien kecepatan 701,48 , Al2(SO4)3 dengan gradien kecepatan 802,2 , koagulan Fe2(SO4)3  dengan gradien kecepatan 701,48 , Fe2(SO4)3  dengan gradien kecepatan 802,2 , secara berturut-turut 73.18%, 80.16%, 54.36%, dan 59.22%. Kemudian pada air baku musim panas secara berturut-turut 94.87%, 97.58%, 96.15%, 96.77%. Kata Kunci: Koagulasi-Flokulasi, Chemical Oxygen Demand, Total Fosfat, Koagulan Fe2(SO4)3, Koagulan Al2(SO4)3
Comparative analysis of Anaerobic Baffled Reactor ( ABR ) and Moving Bed Biofilm Reactor ( MBBR ) for Domestic and Laundry Wastewater Treatment : Technical, Economic, and Enviromental Performance Assessment in Lamongan, East Java, Indonesia Ramadhan, Iqbal
Dampak Vol. 22 No. 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.22.2.134-146.2025

Abstract

This study evaluates the treatment performance of Moving Bed Biofilm Reactor (MBBR) and Anaerobic Baffled Reactor (ABR) systems in treating domestic laundry wastewater in a tropical environment. Both reactors were operated for 90 days under optimized conditions, with MBBR achieving higher removal efficiencies for biochemical oxygen demand (BOD) and chemical oxygen demand (COD) at 94.6% and 95.2%, respectively, compared to ABR’s 92.6% and 91.7%. Nutrient removal was more effective in MBBR, particularly for ammonia (89%) and phosphate (96%). ABR demonstrated potential for biogas production, generating 126 m³/month, suggesting its viability as a sustainable energy source. However, both systems required post-treatment disinfection to reduce pathogenic bacteria to acceptable limits. Economic analysis indicated MBBR’s lower operational costs, while ABR offered advantages in energy recovery. This comparative study informs sustainable domestic wastewater management strategies in Lamongan, East Java, Indonesia. Keyword: Wastewater Treatment, Moving Bed Biofilm Reactor, Anaerobic Baffled Reactor, Domestic Laundry Wastewater, Biogas.

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