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All Journal Bumi Lestari Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Ilmu Lingkungan Jurnal Lahan Suboptimal Jurnal Teknologi Sinergi The Journal of Pure and Applied Chemistry Research IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Sriwijaya International Seminar on Energy-Environmental Science and Technology JPSriwijaya IJEMS (Indonesian Journal of Environmental Management and Sustainability) Jurnal Teknik Kimia Jurnal Engine: Energi, Manufaktur, dan Material Jurnal ABDINUS : Jurnal Pengabdian Nusantara Journal of Applied Materials and Technology JURNAL TEKNIK PATRA AKADEMIKA Journal Of Chemical Process Engineering JURNAL REKAYASA KIMIA & LINGKUNGAN
Tuty Emilia Agustina
Jurusan Teknik Kimia, Fakultas Teknik, Universitas Sriwijaya, Jl. Raya Palembang – Prabumulih Km. 32 Indralaya, Ogan Ilir 30662, Sumatera Selatan
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Neuroscience Public Health

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Photocatalytic Degradation of Heavy Metals Cd, Cu, Fe and Pb Using ZnO-Zeolite Nanocomposite Ramadhini, Tri Karimah; Agustina, Tuty Emilia; Melwita, Elda; Wijayanti, Maria Siswi
Indonesian Journal of Environmental Management and Sustainability Vol. 7 No. 4 (2023): December
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.2023.7.4.147-152

Abstract

Heavy metals are the main pollutant substances in the environment. Heavy metals are a type of metal with high density and are very dangerous to living organisms, especially humans. Living organisms can adsorb the bioaccumulative and sedimentation of heavy metals that settle in water. Some compounds which found in wastewater including Cadmium (Cd), Copper (Cu), Iron (Fe), and Lead (Pb). These heavy metals cannot naturally degrade, additional processing is required before it being released into the environment. To prevent environmental pollution impacts, wastewater containing heavy metals must be handled properly and optimally. One method that can be applied for wastewater treatment is degradation by photocatalysis, utilizing the assistance of light. This research is to investigate the effect of pH and irradiation time on the degradation of Cd (cadmium), Cu (Copper), Fe (Iron), and Pb (Lead) heavy metals. To enhance the photocatalytic activity, the synthesis of ZnO-Zeolite nanocomposites was conducted. The ZnO-Zeolite nanocomposites produced were analyzed by SEM-EDX and XRD. The utilization of ZnO-Zeolite nanocomposites is deemed effective in reducing heavy metal concentrations. The degradation with Ultraviolet (UV) light exposure runs within 15-120 minutes with pH variation between 4-8. The degradation of heavy metal runs at 60 minutes and 120 minutes showing an optimum percentage removal of metals approaching 100%. The optimum pH values for Cd, Cu, Fe, and Pb are pH 8, pH 7, pH 6, and pH 8, respectively. The sequential metal degradation percentages are 98.96%, 95.43%, 96.07%, and 95.53%, respectively.
The Treatment of Musi River Water Sample using Slow Sand Filter and Ultraviolet Radiation (UV) with Solar Cell Power Sources Imaniah Sriwijayasih; Eky Novianarenti; Tuty Emilia Agustina; Subriyer Nasir; Rikky Leonard; Tarikh Azis Rand; Imah Luluk Kusminah
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 2 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i2.1842

Abstract

The Musi River's water is typically used to meet everyday needs. However, because of the current high population and activities, industrial and domestic garbage are being dumped straight into the Musi River. The purpose of this research was to study the variables that affect the processing of the Musi Riiver Water Samples to get the quality standard requirements of the third-grade river water. Water is filtered using a slow sand filter with a 50–70 cm sand height fluctuation and four different UV irradiation times 15, 30, 45, and 60 minutes. The results of this investigation showed that 2% DO was obtained for the filtration of Musi River water using a slow sand filter with a height of 70 cm sand. BOD5 and COD degradation were determined to be 82% and 93%, respectively. Meanwhile, 29/100 ml of E. Coli was discovered for the UV radiation therapy after a 60-minute irradiation period.  
Adsorption of Fe Metal Ions in Laboratory Wastewater with Chitosan from Fish Scales Ramadhini, Tri Karimah; Agustina, Tuty Emilia; Fadhlurrahman, M Arif; Nufus, Dian Natasya Alfa; gayatri, Ryaniza
The Journal of Pure and Applied Chemistry Research Vol. 13 No. 3 (2024): Edition September-December 2024
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2024.013.03.5501

Abstract

Laboratory wastewater contains organic compounds and heavy metals, such as iron (Fe), manganese (Mg), chromium (Cr), and mercury (Hg). These pollute the environment, especially the groundwater. One alternative to process laboratory wastewater by using adsorption method. The adsorption method requires an absorbent. The waste from fish scale was reported contains chitosan and can be applied as adsorbent materials. The paper reports our preparation of chitosan from fish scales. Then, it was applied as adsorbent, and studying the effect of chitosan weight / dose, pH, and stirring time for removal of iron metals ion. The best Fe removal percentage of 99.82% was obtained by using the chitosan dose of 2 g and a stirring time of 60 minutes. The pH condition with the highest Fe removal percentage was at pH 4 (99.98%). The optimum condition then applied to laboratory wastewater. The developed strategic was able to meet the standard for water quality according to Minister of Environment Regulation No. 5 in 2014.
Evaluation of Electrocoagulation Process Efficiency in Laboratory Wastewater Treatment with Various Current Densities Fatimura, Muhrinsyah; Tuty Emilia Agustina; Ian Kurniawan; Rully Masriatini; Nurlela; Reno Fitriyanti
Journal of Chemical Process Engineering Vol. 10 No. 1 (2025): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v10i1.1533

Abstract

Laboratory wastewater contains harmful compounds such as COD, TSS, heavy metals, and toxic compounds that require treatment before being discharged into the environment. Laboratory wastewater contains various hazardous pollutants that can pollute the environment if not managed properly. This study aims to evaluate the efficiency of the electrocoagulation process in the treatment of laboratory wastewater of the Chemical Engineering Study Program of PGRI University Palembang with variations in current density and reaction time. The experimental method was used by designing an electrocoagulation reactor using aluminum electrodes. The independent variables tested include current density (76.92 A/m², 87.17 A/m², and 102.56 A/m²) and reaction time of 15, 30, 60 minutes. Parameters analyzed included COD, TSS, TDS, pH, electrode consumption, and energy consumption. The results showed that the electrocoagulation process effectively reduced pollutant parameters; at a current density of 102.56 A/m² for 60 minutes, COD decreased to 63.5 mg/L, TSS to 23.52 mg/L, pH increased to 8, and turbidity reduced to 20.48 NTU. The specific energy consumption reached 18.2 kWh/m³ with an operational cost of Rp27,300/m³. Based on the analysis, the optimal current density for laboratory wastewater treatment is 102.56 A/m² with a reaction time of 60 minutes. Electrocoagulation technology is recommended as an efficient, effective, and environmentally friendly treatment method for laboratory wastewater in higher education institutions.
The Effect of Bentonite Activation and Its Application on Reducing Metal Ions Levels in Wastewater Estiarny, Resfy Ella; Agustina, Tuty Emilia; Sari, Tuti Indah; Gayatri, Rianyza
Jurnal Teknologi Vol. 17 No. 2 (2025): Jurnal Teknologi
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.17.2.115-122

Abstract

Heavy metal pollution such as Cu²⁺, Fe³⁺, and Pb²⁺ metal ions resulting from industrial and laboratory activities has become a serious environmental issue due to their toxic and bio-accumulative nature. This study aims to evaluate the adsorption effectiveness of natural bentonite and bentonite activated chemically with H₂SO₄ followed by thermal treatment at 300 °C. The activation process was intended to enhance surface area, porosity, and the number of active sites on the bentonite surface. Adsorption experiments were conducted using synthetic wastewater containing Cu, Fe, and Pb metal ions with varying adsorbent masses (1–5 grams), and surface morphology characterization was performed using SEM-EDX. Results showed that acid-thermal activated bentonite had a more porous and fragmented surface structure compared to natural bentonite, contributing to higher adsorption efficiency. At an adsorbent mass of 5 g, Pb removal reached 92.5% with acid-thermal activated bentonite, whereas natural bentonite achieved only 85.5%. Additionally, the removal efficiency of Fe³⁺ and Cu²⁺ ions also significantly increased after activation. These findings indicate that chemical and thermal activation synergistically enhance the performance of bentonite as an effective adsorbent for treating hazardous wastewater containing heavy metals.
Pengolahan Limbah Logam Berat Kromium Hexavalen Menggunakan Reagen Fenton dan Adsorben Keramik Zeolit Agustina, Tuty Emilia; Faizal, Muhammad; Aprianti, Tine; Teguh, Dedi; Rif'at, Aditya M; Putra, Imam Gunawan; Prayesi, Mutiara Rizki; Fitrializa, Ulfa
Jurnal Rekayasa Kimia & Lingkungan Vol 13, No 1 (2018): Jurnal Rekayasa Kimia & Lingkungan (June, 2018)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v13i1.10109

Abstract

Kromium diketahui sebagai salah satu polutan beracun yang menyebabkan masalah lingkungan dan kesehatan masyarakat. Kromium Heksavalen Cr(VI) merupakan logam berat, dimana dalam konsentrasi yang kecil dapat menghasilkan tingkat keracunan yang tinggi pada makhluk hidup. Jika senyawa kromium (VI) terbuang ke lingkungan dan masuk ke dalam tubuh makhluk hidup maka akan sangat berbahaya, sehingga penting untuk mengolah limbah tersebut. Penelitian ini difokuskan pada proses pengolahan Cr(VI) dengan metode kombinasi yaitu secara kimia dan secara fisika. Penelitian ini bertujuan untuk mengolah air limbah yang mengandung Cr(VI) menggunakan reagen Fenton yang dilanjutkan adsorpsi menggunakan adsorben berbahan dasar zeolit dan tanah liat yang dibentuk menjadi keramik. Air limbah yang mengandung Cr(VI) dikontakkan dalam reaktor berpengaduk sehingga terjadi reaksi reduksi oksidasi, selanjutnya air limbah ini dilewatkan ke dalam kolom adsorpsi yang berisi adsorben keramik zeolit. Kondisi terbaik dari pengolahan air limbah yang mengandung Cr(VI) dengan metode kombinasi ini dicapai pada konsentrasi limbah krom 200 ppm, rasio molar reagen Fenton 1:30, dan pH 6. Dimana persentase maksimum penurunan Cr(VI) dengan proses Fenton sebesar 30,15% dan dilanjutkan dengan adsorpsi sehingga penurunan Cr(VI) total mencapai 99,99%. Hal ini menunjukkan bahwa pengolahan limbah logam berat kromium dengan menggunakan reagen Fenton dilanjutkan adsorpsi menggunakan adsorben keramik zeolit mampu menurunkan kadar Cr(VI) pada limbah cair mencapai 0,0033 ppm dari baku mutu yaitu 0,1 ppm, sehingga hasil penelitian ini telah memenuhi baku mutu lingkungan
The Effect of Using Wet Ash as a Substitute for Quicklime in Improving the Quality of Acid Mine Drainage from Coal Mining Fikri, Muhammad; Agustina, Tuty Emilia; Hermansyah, Hermansyah
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 10, No 2 (2025): June 2025
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v10.i2.154

Abstract

Acid Mine Drainage (AMD) management uses the active treatment method with the addition of alkaline neutralizing chemicals such as lime (CaCO3, CaO) although the cost is more expensive. Several previous studies indicate that the application of boiler ash can increase pH and nutrient content because it is alkaline. The boiler ash used in this study came from the remaining burning of bark at a Medium Density Fiberboard industrial. Boiler ash containing water is known as Wet Ash and is strongly alkaline (pH 11.92). The purpose of this study was to analyze the effect of adding wet ash and to analyze the effectiveness of AMD processing on pH, Total Suspended Solids (TSS), Fe and Mn. The method this study: wet ash samples of 2.5 g, 5 g, 7.5 g, 10 g, 12.5 g and 15 g were mixed with 10 liters of AMD, homogenized for 10 minutes, then analyzed in the laboratory to determine its characteristics. The results of the study on the characteristics of wet ash treatment of 15 g/L with pH = 7.21, TSS = 326 mg/L, Fe = <0.018 mg/L, Mn = 6.42 mg/L is the best treatment because all parameters meet the quality standards.
Fly ash adsorbent for ph improvement and manganese reduction in acid mine drainage Nurlela; Agustina, Tuty Emilia; Arita, Susila; Bahrin, David; Gayatri, Rianyza
Journal of Applied Materials and Technology Vol. 7 No. 1 (2025): September 2025
Publisher : Faculty of Engineering Universitas Riau and Applied Materials and Technology Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/Jamt.7.1.41-48

Abstract

Metal solid waste from coal combustion (fly ash) is abundant in Indonesia, as an effective and economical adsorbent in neutralizing acid mine drainage (AMD). Given that the continuous utilization of coal produces environmental challenges in the form of AMD containing acid residues and heavy metals such as manganese (Mn), an appropriate treatment solution is required. The adsorption method was chosen due to its simplicity, cost effectiveness, and ability to remove heavy metal pollutants. The purpose of this research is to characterize fly ash before and after heating by SEM and XRD analysis, and evaluate the effect of fly ash physical activation temperature by heating at 100oC and 200oC for an interval of 60 minutes on the characteristics and adsorption ability of fly ash. In addition, this study also evaluated the effectiveness of the adsorbent mass (fly ash before heating and after heating) in increasing pH and reducing Mn concentration in AMD so that it meets the quality standards of Class 1 river water. The results obtained from this study show a fundamental difference in the properties of fly ash before and after heating. Based on BET analysis, the physical activation process resulted in pore enlargement (0.196 nm) and increased surface area of the adsorbent (0.847 m2/g), which significantly affected its binding capacity to solutes (adsorption capacity). The application of fly ash as an adsorbent showed the ability to increase the pH value of acid mine drainage towards neutral conditions. The process of reducing heavy metal ions Mn by using 50 g of fly ash heating at 100oC and 200oC, resulted in a removal percentage of 94.74% and 98.44%. It is hoped that this research can provide innovative and sustainable AMD treatment and increase the use value of fly ash waste.
Properties and Utilization of Fly Ash for Treating Acid Mine Drainage Nurlela; Agustina, Tuty Emilia; Arita, Susila; Bahrin, David; Fatimura, Muhrinsyah; Masriatini, Rully; Gayatri, Rianyza
Indonesian Journal of Environmental Management and Sustainability Vol. 9 No. 4 (2025): December
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.2025.9.4.223-232

Abstract

The combustion of coal in power plants (PLTU) generates fly ash containing silica dioxide (SiO?) and alumina (Al?O?), which exhibit promising properties as adsorptive materials. Fly ash, typically regarded as an industrial by-product, has been widely explored for its application as an adsorbent in wastewater purification. One of the most challenging wastewaters is acid mine drainage, characterized by strong acidity (pH < 5), residual contaminants, and elevated concentrations of heavy metal ions such as manganese (Mn) and iron (Fe). When released untreated, this effluent poses significant risks to both surface and groundwater quality in mining areas. This study focuses on the characterization and utilization of fly ash as an adsorbent to neutralize acidity and reduce Mn and Fe concentrations in acid mine drainage. The material was characterized using SEM-EDX and XRD techniques, followed by adsorption experiments. To enhance its properties, fly ash underwent physical activation through heating at 100 °C for 60 minutes. The activation process modified its structure, expanding pore volume and increasing surface area, thereby improving adsorption performance. The experimental results revealed significant differences in the properties of fly ash before and after activation. Activated fly ash effectively raised the pH of acid mine drainage to near-neutral conditions while achieving removal efficiencies of 96.61% for Mn and 83.33% for Fe using 50 g of adsorbent. These findings highlight the potential of fly ash as a low-cost and effective material for acid mine drainage treatment, both for acidity control and heavy metal removal.
Pemberdayaan Masyarakat dalam Inovasi Bahan Pangan dari Limbah Biji Mangga di SMKN 1 Pemulutan, Sumatera Selatan Nurisman, Enggal; Agustina, Tuty Emilia; Melwita, Elda; Jannah, Asyeni Miftahul; Pritania, Alya Dewi
Jurnal ABDINUS : Jurnal Pengabdian Nusantara Vol 8 No 1 (2024): Volume 8 Nomor 1 Tahun 2024
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/ja.v8i1.19205

Abstract

Mango seeds (Mangifera indica L.) have a fairly high carbohydrate content and can be processed as an alternative food. This community service activity aims to educate the public about the process of processing mango seeds into flour and processed food ingredients. Prior to counseling, the team conducted initial experiments on the products produced using initial treatment in the form of soaking with water, slaked lime and sodium bisulfite. Organoleptic tests on processed food products from mango seeds were carried out by random respondents with assessment indicators in the form of color, texture, aroma and taste. The test results showed that processed cakes from mango seed flour as much as 30% with the initial treatment of sodium bisulfite immersion in the initial process had the best organoleptic value, namely, 3.7 out of 4. This activity was carried out at SMKN 1 Pemulutan and received very good appreciation because it was considered very useful, informative and can be developed continuously.
Co-Authors Aditya M Rif&#039;at Afriyani, Asia ANWAR, WIWIN ARMOLDO OKTAVIANI Aprianti, Tine Aprianti, Tine Asyeni Miftahul Jannah Budi Sulistyono Budi Sulistyono Chris Luigi Chris Luigi Cundari, Lia David Bahrin Dewi Amalia Dewi Ermaya Diana Purbasari Dinata, Noer Fadzri Perdana Eky Novianarenti Endi Adriansyah Enggal Nurisman Estiarny, Resfy Ella Eva Okatarinasari Fadhlurrahman, M Arif Fatimura, Muhrinsyah Fitri Hadiah Fitri Suryani Arsyad Fitria, Syarifa Fitrializa, Ulfa Fitriyanti, Reno Gayatri, Rianyza gayatri, Ryaniza Gusti Diansyah Hariestya Viareco Hermansyah Hermansyah I Nyoman Sujana Ian Kurniawan Imah Luluk Kusminah Imam Gunawan Putra Imaniah Sriwijayasih Indah Agus Setiorini Jantan Manalaoon Leily Nurul Komariah M. Taufik Toha Marhadi Marhadi Martinus, Ali Melwita, Elda Michihiko Ike Mikrajuddin Abdullah Muhammad Abu Bakar Sidik Muhammad Faizal Muhammad Faizal Muhammad Faizal Muhammad Fikri Muhammad Hafiz Ridho Mutiara Rizki Prayesi Nono Darsono Nono Darsono Novandra Eko Aristian Novandra Eko Aristian Novi Anggraini Novia Novia Nufus, Dian Natasya Alfa Nurdiana Febriyanti Nurlela Peppy Herawati Prayesi, Mutiara Rizki Pritania, Alya Dewi Putra, Imam Gunawan Putri Hsaa, Aura Khalisya Rahma Nuryanti Ramadhini, Tri Karimah Ratih Wijayanti, Ratih Rendotian Anugerah Rendotian Anugrah Restu Juniah Rif'at, Aditya M Rifqi Sufra Rikky Leonard Rully Masriatini Salsabilla A Yani Satoshi Soda Subriyer Nasir Subriyer Nasir Susila Arita Syarifuddin Syarifuddin Tarikh Azis Ramadani Teguh, Dedi Teguh, Dedi Tizana Lorenza Tizana Lorenza Tuti Indah Sari Tuti Indah Sari, Tuti Indah Ulfa Fitrializa Wijayanti, Maria Siswi Yogi Pratama Yogi Pratama