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All Journal Jurnal Kimia (Journal of Chemistry) Jurnal Bahan Alam Terbarukan CHEMICA Jurnal Teknik Kimia Seminar Nasional Teknik Kimia Kejuangan Prosiding Semnastek Elkawnie Agroindustrial Technology Journal Sains Natural: Journal of Biology and Chemistry Chemistry Indonesian Journal of Chemical Research CHEESA: Chemical Engineering Research Articles Jurnal Pemberdayaan: Publikasi Hasil Pengabdian Kepada Masyarakat Jurnal Teknik Kimia Jurnal Ilmiah Teknik Kimia Bubungan Tinggi: Jurnal Pengabdian Masyarakat Indonesia Berdaya Open Science and Technology Journal of Fibers and Polymer Composites Jurnal Teknik Kimia dan Lingkungan Indonesian Journal of Chemical Engineering
Rahayu, Aster
Ahmad Dahlan University
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Veterinary Other

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Studi Pemanfaatan dan Metode Pemisahan Silika dari Coal Fly Ash: A Study for Silika Utilization and Its Separation Method from Coal Fly Ash Farrah Fadhillah Hanum; Aster Rahayu
Open Science and Technology Vol. 2 No. 1 (2022): Open Science and Technology
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/ost.vol2no1.2022.44

Abstract

Penggunaan batubara sebagai sumber energi masih belum tergantikan hingga saat ini, sehingga kajian mengenai pemanfaatan abu batubara masih sangat perlu untuk dikembangkan. Abu batubara merupakan limbah hasil proses pembakaran batu bara yang komposisinya akan berbeda sesuai dengan jenis batubara yang digunakan dan proses pembakaran yang dilakukan. Salah satu komposisi  penyusun utama dari abu batubara ini adalah silika. Silika memiliki  potensi untuk dimanfaatkan dalam berbagai tujuan seperti untuk pengolahan limbah, untuk bahan aditif dalam pertanian, hingga sebagai nanosilika. Paper ini berisi informasi mengenai pemanfaatan silika dari abu batubara yang sudah ada serta metode yang efektif untuk mendapatkan silika dari limbah abu batu bara ini. Dari pembahasan diketahui bahwa studi pemanfaatan silika saat ini umumnya berfokus ke arah sintesis zeolite. Penelitian pemanfaatan silika sebagai nanosilika baru mulai dikembangkan baru-baru ini. Sementara itu, pemanfaatan silika tidak terlepas dari metode ekstraksi silika dari coal fly ash tersebut. Dari pembahasan diketahui NaOH masih menjadi pilihan utama dalam proses leaching silika. Studi ini diharapkan dapat memberikan informasi bagi kemajuan riset dalam rangkapengolahan dan pemanfaatan limbah. The use of coal as an energy source has not been replaced until now, subsequently the  studies on the utilization of coal fly ash still need to be developed. Coal fly ash is waste from the coal combustion process whose composition will differ according to the type of coal used and the combustion process carried out. One of the main constituents of coal ash is silica. Silica has the potential to be used in various purposes such as for waste treatment, for additives in agriculture, to nanosilica. This paper contains information on the utilization of silica from existing coal fly ash and an effective method for obtaining silica from the coal fly ash. Based on the discussion, it is known that the current study of the use of silica generally focuses on the synthesis of zeolite. The research on the use of silica as nanosilica has only recently been developed. Meanwhile, the role of silica is related to the method of extracting silica from the coal fly ash. It is known that NaOH is the main leaching solution in the case of silica leaching process. This study is expected to provide information for research progress in the context of processing and utilizing waste.
Cellulose Extraction from Coconut Coir with Alkaline Delignification Process Aster Rahayu; Farrah Fadhillah Hanum; Nafira Alfi Zaini Amrillah; Lee Wah Lim; Siti Salamah
Journal of Fibers and Polymer Composites Vol. 1 No. 2 (2022): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (534.766 KB) | DOI: 10.55043/jfpc.v1i2.51

Abstract

Coconut has been known for its benefits in human life. Coconut coir, as part of coconut which is considered as waste, contains useful components. It contains high cellulose which is could be used in fiber industries. Meanwhile, coconut coir also contains lignin which needs to be separated. In this study, a delignification process was used to remove the brown color on the fiber caused by the lignin content. The delignification process was a pretreatment before the cellulose extraction was carried out. It had been done in the various NaOH concentration (0.5; 1; and 1.5 M), reaction time (1; 1.5; and 2 hours) and the reaction temperature (60,70, and 80 oC). This study aims to determine the cellulose content and the factor that affected the cellulose extraction and the characteristics of the cellulose extracted from the coconut coir. The Chesson Data method and SEM analysis have been used for the characterization of the cellulose. The delignification method known has the potential as a simple and effective method for extracting cellulose from natural materials. The result shows that the optimum cellulose content obtained at 100 mesh coir particle size, 1.5 M NaOH concentration, at 80°C for 1.5 hours was 69.82 %.
Pelatihan Pemanfaatan Sekam Padi Menjadi Silika Penyerap dan Biobriket Aster Rahayu; Farrah Fadhillah Hanum; Siti Salamah
Bubungan Tinggi: Jurnal Pengabdian Masyarakat Vol 4, No 4 (2022)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/btjpm.v4i4.5796

Abstract

Meningkatnya jumlah populasi penduduk sangat linier dengan kebutuhan dan timbulan volume limbah yang dihasilkan baik dari limbah domestik ataupun limbah pertanian. Kondisi ini terjadi di Desa Mulyodadi, Bambanglipuro, Bantul. Daerah yang didominasi oleh kawasan persawahan serta masyarakat yang mayoritas berprofesi sebagai petani dan ibu rumah tangga, mengakibatkan perlunya berbagai informasi mengenai Teknologi Tepat Guna khususnya penanganan limbah domestik dan limbah pertanian dengan baik dan benar. Oleh karena itu, pada kegiatan pengabdian kali ini dilakukan penyuluhan dan pelatihan pemanfaatan limbah hasil pertanian (sekam padi) menjadi silika penyerap dan biobriket. Kegiatan tersebut dilaksanakan pada bulan April sampai dengan Oktober 2021. Harapan kegiatan ini yaitu meningkatkan ilmu pengetahuan penduduk tentang penanganan limbah yang baik dan benar serta dapat meningkatkan perekonomian penduduk di Desa Mulyodadi dengan adanya ilmu baru dalam pemanfaatan dan pengolahan limbah menjadi produk yang bernilai ekonomi (recycle dan reproduct) seperti briket dan silika penyerap. Briket yang dihasilkan dari abu pembakaran sekam padi yang merupakan limbah hasil pertanian dapat digunakan oleh penduduk setempat sendiri ataupun didistribusikan ke penjual-penjual sate sebagai bahan baku utama usaha mereka. Silika penyerap yang juga merupakan hasil pemanfaatan sekam padi tentunya dapat digunakan untuk pada kegiatan rumah tangga, ataupun dijual dengan kemasan yang lebih menarik. The increase in population is very linear with the need for and the volume of waste generated from domestic or agricultural waste. This condition occurred in Mulyodadi Village, Bambanglipuro, Bantul. The area, which is dominated by rice fields and the majority of people who work as farmers and housewives, results in the need for various information regarding Appropriate Technology, especially handling domestic and agricultural waste properly and correctly. Therefore, in this community service activity, counselling and training were carried out on using agricultural waste (rice husk) in absorbent silica and bio briquettes. The activity will be carried out from April to October 2021. This activity hopes to increase residents' knowledge about proper and correct waste handling and to improve the economy of residents in Mulyodadi Village with new knowledge in the utilization and processing of waste into products that have economic value (recycling) and reproduction) such as briquettes and absorbent silica. Briquettes produced from the ashes of burning rice husks which are agricultural waste can be used by residents or distributed to satay sellers as the main raw material for their business. Absorbent silica, which is also the result of utilizing rice husks, can be used for household activities or sold in more attractive packaging. 
Degradasi remazol yellow FG dengan katalis oksida besi/karbon aktif dengan metode fotokatalis Aster Rahayu; Lindi Juliantri; Rahma Yunita Amalia
Jurnal Teknik Kimia Vol 28 No 3 (2022): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v28i3.1222

Abstract

Di Indonesia, industri tekstil dan produk tekstil adalah salah satu penyumbang terbesar dalam peningkatan perekonomian. Namun perkembangan industri yang pesat ini berbanding terbalik dengan keseimbangan lingkungan hidup. Salah satu yang menjadi masalah utama dari limbah cair yang dihasilkan industri tekstil yaitu berupa zat warna. Umumnya limbah cair yang dibuang industri tekstil termasuk senyawa organik yang tidak dapat diuraikan oleh mikroorganisme dengan cepat sehingga dapat menyebabkan polutan bagi lingkungan terutama ekosistem perairan. Beberapa metode yang dapat dilakukan untuk meminimalisir kandungan zat warna dalam limbah industri tekstil antara lain metode biologi, koagulasi, elektrokoagulasi, adsorpsi, ozonisasi, klorinasi. Namun, dari beberapa metode tersebut kurang efektif dalam mengatasi limbah zat warna tekstil bahkan seringkali menimbulkan persoalan baru bagi lingkungan. Salah satu metode pengolahan yang saat ini sedang dikembangkan untuk mendegradasi warna pada limbah cair yakni metode fotokatalis lampu UV-sinar matahari. Metode fotokatalis lampu UV-sinar matahari ini menggunakan oksidasi besi/karbon aktif sebagai katalis. Pengolahan sample warna dilakukan dengan memvariasikan waktu penyinaran, konsentrasi katalis dan memvariasikan jenis sinar yang di aplikasikan ke larutan sampel 200 ml dengan penambahan katalis sebesar 0,1 gram terhadap waktu penyinaran selama 1 jam, 2 jam, 3 jam, 4 jam, dan 5 jam penyinaran lampu UV dan sinar matahari sehingga didapat persentase penurunan absorbansi tertinggi pada konsentrasi katalis 4% FE dalam katalis karbon aktif dan lama penyinaran matahari selama 5 jam dengan penurunan sebesar 97,06% pada sampel limbah tenun.
Preparation and Characterization of Mangrove (Rizhopora Mucronata) Charcoal-Epoxy Polymer Composite Althaf Irfan Fachrezy; Ryan Sutedja; Sartika Selang; Aster Rahayu; Maryudi - Maryudi
CHEMICA: Jurnal Teknik Kimia Vol 9, No 1 (2022): April 2022
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v9i1.24472

Abstract

Composite materials have been widely developed and applied for various purposes. Polymer composites have excellent properties on mechanical strength and chemical resistance. This study aims to determine the strength of composite made of mangrove charcoal and epoxy since mangrove charcoal has a good character and is abundantly available. The mangrove charcoal was added into the epoxy-hardener matrix with a volume fraction of 10%, 20%, and 30%. The charcoal size was 40, 60, and 100 mesh. The highest tensile strength was found with a volume fraction of 10% with an average of 19.33 N/mm2 at a size variation of 100 mesh mangrove charcoal. The highest elongation at break was found with a volume fraction of 10% with an average of 5.233% at 100 mesh mangrove charcoal size.
Reduction of COD, pH and Phosphate Levels in Laundry Wastewater Using Multi Soil Layering (MSL) Method Aster Rahayu; Maryudi Maryudi; Nuraini Nuraini; Nafira Alfi Zaini Amrillah; Irwan Mulyadi; Farah Fadillah Hanum
JURNAL SAINS NATURAL Vol. 13 No. 1 (2023): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v13i1.450

Abstract

The growth of laundry services is directly proportional to the use of detergent. Detergent is a cleaning product that contains high levels of COD and phosphate. One method that can be used to overcome this problem is Multi Soil Layering (MSL). This research focussed on the flow rate's effect on decreasing pH, COD, and phosphate levels in industrial laundry waste. MSL was installed using a mixture of andosol soil and activated charcoal from coconut shells. Laundry wastewater was let into MSL with flowrate: 10, 50, and 100 ml/minute. The waste degradation system is placed anaerobically by optimising the anaerobic process in the andosol soil. The pH, COD, and phosphate levels were achieved at 7, 90.9%, and 80.7% by draining the laundry industry waste into the MSL system. This MSL method has a residence time of 266 minutes for a flowrate of 100 mL/minute, 532 minutes for a flowrate of 50 mL/minute and 2660 for a flowrate of 10 mL/minute. Keywords:  MSL;  Phosphate;  COD;  Laundry Industry; Andosol soilABSTRAKPenurunan Kadar COD, pH dan Fosfat pada Air Limbah Laundry Menggunakan Metode Multi Soil Layering (MSL)Pertumbuhan jasa laundry berbanding lurus dengan penggunaan detergen. Detergen merupakan produk pembersih yang mengandung COD dan fosfat dalam kadar tinggi. Salah satu cara yang dapat digunakan untuk mengatasi masalah tersebut adalah Multi Soil Layering (MSL). Penelitian ini berfokus pada pengaruh laju alir terhadap penurunan pH, COD, dan kadar fosfat pada limbah laundry industri. MSL dipasang menggunakan campuran tanah andosol dan arang aktif dari tempurung kelapa. Air limbah laundry dimasukkan ke dalam MSL dengan debit aliran: 10, 50, dan 100 mL/menit. Sistem degradasi sampah ditempatkan secara anaerobik dengan mengoptimalkan proses anaerobik di tanah andosol. Kadar pH, COD, dan fosfat dicapai pada 7, 90,9%, dan 80,7% dengan mengalirkan limbah industri laundry ke dalam sistem MSL. Metode MSL ini memiliki waktu tinggal 266 menit untuk laju alir 100 mL/menit, 532 menit untuk laju alir 50 mL/menit dan 2660 untuk laju alir 10 mL/menit.Kata kunci: MSL; Fosfat; COD; Industri Laundry; Tanah Andosol
MODIFIKASI pH SILIKA MESOPORI DARI PASIR PANTAI SEBAGAI ADSORBEN TIMBAL (Pb) DAN TEMBAGA (Cu) DALAM LIMBAH PERCETAKAN S. Salamah; A. Rahayu
Jurnal Kimia (Journal of Chemistry) Vol. 17, No.1, Januari 2023
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JCHEM.2023.v17.i01.p07

Abstract

Limbah industri umumnya mengandung logam Pb, Zn, Cr, Mn, dan Cu. Logam-logam ini sangat berbahaya sehingga perlu dilakukan pengolahan limbah, seperti menggunakan adsorben yang mempunyai luas permukaan besar, contohnya silika mesopori (SM). SM dapat dibuat dari silika pasir pantai. Pasir diekstraksi dengan larutan HCl untuk mendapatkan silika, dilanjutkan dengan refluks menggunakan NaOH. Silika diproses menjadi SM dengan templet Dodesil Amina (DDA). Proses pembentukan SM dalam kondisi asam dilakukan dengan variabel pH 3, pH 4 dan pH 5. SM yang terbentuk digunakan untuk adsorpsi limbah percetakan. Hasilnya menunjukkan karakter SM optimum didapatkan pada pH 4 dengan luas permukaan 286,46 m2/g, volume pori total 10,9 cm3/g dan diameter pori 15,21 nm. Limbah percetakan sebelum adsorpsi mengandung logam timbal (Pb) <0,009 mg/L, tembaga (Cu) 0,5589 mg/L, Biochemical Oxygen Demand (BOD) sebesar 1740 dan Chemical Oxygen Demand (COD) sebesar 6534. Adsorpsi limbah menggunakan SM optimum dilakukan pada waktu kontak 120 menit dengan kecepatan pengadukan 180 rpm. Kandungan Cu dalam filtrat setelah proses adsorpsi dengan kecepatan putaran pengaduk 180 rpm adalah sebesar 0,05 mg/L. Level BOD pada sampel setelah adsorpsi dengan waktu 120 menit terjadi penurunan 20 %, sedangkan level COD terjadi penurunan 50 %. Level BOD dan COD setelah adsorpsi masih relatif tinggi, yaitu masing-masing sebesar 1260 dan 3059,5. Hasil analisis dengan SEM-EDX Mapping pada adsorben SM setelah adsopsi menunjukkan bahwa pada adsorben masih terdapat logam Pb 1,17 %b/b dan Cu 1,48 %b/b. Hasil ini menunjukkan bahwa silika mesopori potensial dan dapat digunakan sebagai adsorben pada pengolahan limbah industri yang mengandung logam Pb dan Cu. Kata kunci: adsorpsi limbah, modifikasi pH, silika mesopori, tembaga, timbal. ABSTRACT Industrial waste generally contains Pb, Zn, Cr, Mn, and Cu metals. These metals are hazardous, therefore, a waste treatment needs to be carried out, such as by using a large surface area of adsorbent, for example, mesoporous silica (MS). MS can be prepared from beach sand silica. The sand was extracted using an HCl solution to obtain the silica, followed by refluxing it using NaOH. The silica was then processed into MS using a Dodecyl Amine (DDA) template. The process of forming MS in an acidic condition was done with the variables of pH 3, pH 4, and pH 5. The MS created was then used for the adsorption of printing waste. The results showed that the optimum MS character was obtained at pH 4 with a surface area of ??286.46 m2/g, a total pore volume of 10.9 cm3/g, and a pore diameter of 15.21 nm. The printing waste before the adsorption contained lead (Pb) of <0.009 mg/L, copper (Cu) of 0.5589 mg/L, BOD of 1740, and COD of 6534. The adsorption of waste by using the optimum MS was done at a contact time of 120 minutes with a stirring speed of 180 rpm. The content of Cu in the filtrate after the adsorption using a condition of the stirrer rotation speed of 180 rpm was 0.05 mg/L. The BOD level in the sample after the adsorption with a contact time of 120 minutes decreased by 20%, while the COD level reduced by 50%. The level of BOD and COD after adsorption was still relatively high, which was 1260 and 3059.5, respectively. The results of SEM-EDX Mapping analysis on the MS adsorbent after the adsorption contained 1.17 %w/w of Pb and 1.48 %w/w of Cu. These results showed that the silica mesopore was potentially used as an adsorbent for treating the printing waste containing Pb and Cu metals. Keywords: cuprum, lead, Mesoporous Silica (MS), pH modification, waste adsorption.
Synthesis of Silica-PEG By Physically Coating With PEG 4000 For Absorption of Ion Nitrate Aster Rahayu; Maryudi Maryudi; Joni Aldilla Fajri; Lee Wah Lim; Nuraini Nuraini
Elkawnie: Journal of Islamic Science and Technology Vol 8, No 2 (2022)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v8i2.14680

Abstract

Abstract: All production activities will eventually produce waste, especially liquid waste. The nitrate ion (NO3-) is one of the substances in liquid waste that can have a significant impact on water systems and human health. Several methods can be used to treat the nitrate contained in the water, such as adsorption, phytoremediation, and wetland treatment. One of its methods was adsorption. The silica was modified with polymer due to its huge carbon chain. This research was focused on optimizing the ability of silica-based materials using PEG by physically coating them since PEG has a long carbon chain that could be transformed into a helix. In this research, the adsorbent will be prepared from modified silica gel with PEG 4000 by physical coating. Several parameters will be observed, including the effect of coating time, silica-PEG ratio, and PEG concentration. The capacity of silica-PEG to absorb NO3- is being studied. The characterization of functional group content in silica-PEG was carried out by Fourier Transform Infrared (FTIR). The study results show that the coating time was 10 minutes with the ratio of silica to PEG of 1:5, and the concentration of PEG used was 15%, indicating the optimum performance of silica-PEG when used as an absorbent, which achieved 84.44 % nitrate removal. An increase in the absorption capacity of silica-PEG demonstrates the ability of silica-PEG as a porous material. It was compared to silica gel without the PEG coating process, which was 9.09% to 84.44%.Abstrak: Semua kegiatan produksi pada akhirnya akan menghasilkan limbah, terutama limbah cair. Limbah cair biasanya akan bermuara di sungai dan berakhir di laut. Salah satu zat dalam limbah cair adalah ion nitrat (NO3-) yang mana dalam jumlah banyak dapat mengganggu sistem perairan dan kesehatan. Beberapa metode dapat digunakan untuk mengolah nitrat yang terkandung dalam air, seperti adsorpsi. Salah satunya dimodifikasi dengan polimer karena memiliki rantai karbon yang besar. Penelitian ini dikonsentrasikan untuk menyelidiki optimalisasi kemampuan silika dengan PEG dengan pelapisan fisik karena PEG memiliki rantai karbon panjang yang dapat bertransformasi menjadi heliks. Dalam penelitian ini, adsorben akan dibuat dari silika gel termodifikasi dengan PEG 4000 dengan pelapisan fisik. Beberapa parameter yang akan diamati antara lain pengaruh waktu pelapisan, rasio silika-PEG, konsentrasi PEG, dan temperatur pelapisan. Kinerja silika-PEG untuk menyerap NO3- diselidiki. Karakterisasi kandungan gugus fungsi pada silika-PEG dilakukan dengan Fourier Transform InfraRed (FTIR). Hasil penelitian menunjukkan bahwa waktu pelapisan adalah 10 menit dengan perbandingan silika dan PEG 1:5, dan konsentrasi PEG yang digunakan adalah 15%, menunjukkan kinerja silika-PEG yang optimum bila digunakan sebagai penyerap NO3-. Kemampuan silika-PEG sebagai bahan berpori dibuktikan dengan peningkatan kapasitas penyerapan silika-PEG dibandingkan silika gel tanpa proses pelapisan PEG.
Optimization Of Wastewater Treatment Installations In The Palm Oil Industry Aster Rahayu; Siti Jamilatun; Irwan Mulyadi
Jurnal Ilmiah Teknik Kimia Vol. 7 No. 1 (2023): JURNAL ILMIAH TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia, Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/jitk.v7i1.27652

Abstract

The liquid waste generated from the palm oil mill can pollute the environment due to the oils it produces, before being discharged into the environment it is necessary to treat the waste so it does not pollute the surrounding environment. Treatment of wastewater using coagulants will greatly affect the quality of wastewater. This study aims to process wastewater so that it can be disposed of the environment without contaminating the environment, besides that this study aims to compare and find out what types of coagulants are good for handling wastewater, while the coagulants used are Tawas, PAC, Alum Polymer and PAC Polymers. The method used to measure total suspended solids (TSS) is the gravimetric method so that the highest total suspended solids results are obtained using a PAC coagulant, namely 1227 with the lowest average efficiency value of 60.66%.
Teknologi Pengolahan Kandungan Kromium dalam Limbah Penyamakan Kulit Menggunakan Proses Adsorpsi: Review Maryudi; Aster Rahayu; Refah Syauqi; Muhammad Kresna Islami
Jurnal Teknik Kimia dan Lingkungan Vol. 5 No. 1 (2021): April 2021
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (331.362 KB) | DOI: 10.33795/jtkl.v5i1.207

Abstract

The waste management issue is one of the biggest problems in the industries recently. Every industry has a high probability of releasing toxic by-product to the environment in the form of waste. One example is in the leather tanning industry. Leather tanning waste still removes harmful metals in its waste, such as heavy metal chromium (Cr). Chromium is used to produce finer skin products. About 30-40% chromium will be carried in the tanning liquid waste. The high chromium levels remaining and carried away in the waste can cause acute and chronic toxicity to the environment and even very harmful to living things. Adsorption is one of the highly recommended methods available to overcome this problem. Relatively low handling costs, simple processes, and the possibility of being recycled are some of the adsorption process's advantages. In addition, the adsorption process can be maximized by using adsorbents that have specific potential specifications for chromium absorption. This article reviews batch and continuous adsorption methods in the processing of chromium content in tannery waste.
Co-Authors Agus Aktawan, Agus Alliya BalqisViratu Hapsari Althaf Irfan Fachrezy Amelia, Shinta Amilia Amilia, Amilia Amillia, Amillia Amrillah, Nafira Alfi Zaini Areeprasert, Chinnathan Awaluddin Nurmiyanto, Awaluddin BalqisViratu Hapsari, Alliya Chusna, Firda Mahira Alfiata Dewi Wulandari, S.Hut., M.Agr., Ph.D Dhias Cahya Hakika Dhias Cahya Hakika Dhias Cahya Hakika Dita Permata Putri Endah Sulistiawati Erna Astuti Fajri, Joni Aldilla Farah Fadillah Hanum Farrah Fadhillah Hanum Farrah Fadhillah Hanum Febriani, Annisa Vada Firda Mahira Alfiata Chusna Hanum, Farrah Fadhillah Hapsauqi, Iqbal Helmi Mustafa, Yoga Nawaki Ikko Nirwana Luthfiani Imam Santosa Irwan Mulyadi Jamilatun, Siti Jamilatun Joko Pitoyo Joni Aldilla Fajri Lee Wah Lim Lee Wah Lim Lee Wah Lim Lia Anggresani Lim , Lee Wah Lindi Juliantri Lukman Hakim Marlena, Yuni Maryudi Maryudi Maryudi Maryudi - Maryudi Maryudi Maryudi Maryudi Maryudi Mohammed, Hamad Khudhair Muhammad Kresna Islami Muhammad Kresna Islami Muhammad Kunta Biddinika Mulyadi, Irwan Muthadin , Akhmad Sabilal Nafira Alfi Zaini Amrillah Nafira Alfi Zaini Amrillah Ningsih, Devi Yogi Noviana Nuraini Nuraini Nuraini Nuraini Nuraini Nuraini Nuraini Nurmustaqimah Nurmustaqimah, Nurmustaqimah NURUL WULANDARI Rahma Yunita Amalia Refah Syauqi Refah Syauqi Remmo Sri Ardiansyah Riska Setyarini Ryan Sutedja S. Salamah Sari, Hutri Puspita Sartika Selang Setya Wardhana, Budi Setyarini , Riska Shafa Zahira Shinta Amelia Siti Jamilatun Siti Salamah Siti Salamah Soedjatmiko Sri Ardiansyah, Remmo Suradi, Siti Samahani Taufiqurahman , Muhamad Akmal Toyohide Takeuchi Ulung Muhammad Sutopo Ummi Khasanah Veranica Veranica Veranica Veranica Veranica, Veranica Vivi Sisca Winda Dwi Anggraini Yoga Nawaki Helmi Mustafa Zahira, Shafa Zahrul Mufrodi, Zahrul