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All Journal CHEMICA Jurnal Teknik Kimia JMM (Jurnal Masyarakat Mandiri) Berdikari: Jurnal Pengabdian Masyarakat Indonesia International Journal of Marine Engineering Innovation and Research Indonesian Journal of Laboratory Jurnal Pengabdian kepada Masyarakat Journal of Agritechnology and Food Processing Jurnal Teknik Kimia dan Lingkungan Jurnal Ilmiah Teknik dan Sains (JITS) Serambi Engineering Jurnal Sains Materi Indonesia
Hariyadi, Asful
Institut Teknologi Kalimantan
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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Biohydrometallurgy for Cobalt Recovery from Spent Li-ion Batteries using Acidophilic Bacteria Isolated from Acid Mine Drainage Asful Hariyadi; Umi Sholikah; Bangkit Gotama; Muhammad Abdul Ghony
CHEMICA: Jurnal Teknik Kimia Vol 9, No 2 (2022): August 2022
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v9i2.22328

Abstract

Nowadays, recycling Li-ion batteries is an important thing to do to minimize the risk of exposure to this hazardous solid waste. On the other hand, extracting these materials can optimize the economic potential of valuable minerals in the active cathode. Bioleaching was developed as an environmentally friendly method to extract cobalt from the cathode by utilizing the metabolic activity of A. ferrooxidants cells. Microorganisms were isolated from Acid Mine Drainage in a 9K liquid medium at pH=2.5 and used as an inoculum. The Bioleaching process was carried out with various cell concentrations of 5, 10, and 20 %v/v. A positive response was shown by monitoring the microorganism activity through changes in physical appearance, decreasing the pH value, and increasing the Fe3+ concentration. The structural analysis of cathode by XRD and SEM has shown the effect of Co dissolution before and after bioleaching. Optimum recovery of cobalt was achieved up to 57.81% after 14 days of incubation.
Pembuatan Larvasida Daun Jeruk Limau Dan Kelambu Air Untuk Pencegahan Kasus Demam Berdarah Karang Joang: Making Larvicides from Lime Leaves and Water Mosquito Nets to Prevent Cases of Dengue Fever in Karang Joang Lusi Ernawati; Dian Rahmawati; Asful Hariyadi; Riza Alviany
Berdikari: Jurnal Pengabdian Masyarakat Indonesia Vol. 5 No. 1 (2022): Berdikari: jurnal Pengabdian Masyarakat Indonesia
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/bjpmi.05.01.02

Abstract

The health office in Balikpapan is still tracking the number of dengue cases, which has reached at least 90 cases, until the third week of March 2022. During this outbreak, almost everyone is focused on avoiding and treating Covid-19 infections. Dengue fever is an illness to which you should pay close attention. In particular, because dengue fever remains a dangerous sickness in Indonesia. A range of approaches, including the use of larvicides, have been used to prevent and control dengue hemorrhagic fever (DBD). It is only that the mosquito that spreads Dengue Hemorrhagic Fever (DBD) has become susceptible to chemical larvicides, which are widely used by the general public. The purpose of this community service project is to teach people how to produce environmentally friendly natural larvicides from lime leaves. Community socialization, training in how to create larvicide, and knowledge evaluation are all part of the implementation phase. The memorial service will be place in Karang Joang North Balikpapan. Through lectures question and answer sessions, the community gets involved in the implementation process. Training and the use of health protocols are used directly in the manufacturing of larvicides. Water nets were built in several water reservoirs owned by homeowners, as well as similar programs involving of the monitoring and evaluation to provide the instruction and training on natural larvicide technology.
Verifikasi Metode Analisis Kadar Total Fosfat dalam Air Limbah Laundry Merujuk pada SNI 06-6989.31-2005 Made Yuri Suryani; Asful Hariyadi; Adhe Paramita; Rika Awalin Safitri
Indonesian Journal of Laboratory Vol 6 No 1 Tahun 2023
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijl.v1i1.78083

Abstract

Peningkatan kegiatan Usaha Mikro Kecil dan Menengah (UMKM) di bidang jasa pencucian (laundry) Balikpapan semakin berkembang setiap tahunnya. Proses aktivitas laundry menghasillkan limbah cair yang mengandung polutan senyawa beracun dan berbahaya, salah satunya adalah senyawa fosfat, yang apabila memiliki kadar yang melebihi dari BMAL (Baku Mutu Air Limbah) yang sudah ditentukan yaitu maksimum 2 mg/L maka akan berbahaya bagi lingkungan dan dapat menyebabkan pencemaran air. Oleh sebab itu, dalam rangka mengendalikan pencemaran air seuai batas baku mutu air limbah maka diperlukan adanya analisis pengukuran kadar fosfat  sebelum di alirkan ke badan air. Adapun tujuan dari penelitian ini yaitu untuk mempelajari teknik karakterisasi parameter kadar fosfat yang terkandung dalam sampel uji dengan menggunakan instrumentasi Spektrofotometer UV-Vis berdasarkan SNI 06-6989.31-2005. Prosedur pengambilan contoh uji air limbah merujuk pada SNI 6989.59-2008 pada salah satu usaha laundry di Kota Balikpapan, Kalimantan Timur pada dua sumber saluran pembuangan sebelum masuk perairan penerima limbah. Analisis dilaksanakan pada Laboratorium Karakterisasi, Pusat Laboratorium Terpadu ITK dengan pengulangan sebanyak 7 (tujuh) kali pada masing-masing contoh uji. Data hasil analisis  pada parameter batas deteksi dan batas kuantitasi diperoleh sebesar 0,033 mg/L dan 0,083 mg/L. Nilai parameter presisi sampel uji air limbah laundry memperoleh nilai %RSD pada air limbah laundry A dan B sebesar 3,965% dan 3,809%. Nilai %recovery pada air limbah A dan B sebesar 98,211% dan 86,611%. Sehingga hasil analisa kadar fosfat dalam air limbah laundry A dan B diperoleh sebesar 0,290 mg/L dan 0,276 mg/L. Hasil tersebut menunjukkan bahwa kadar fosfat pada sampel air limbah laundry tidak melebihi batas ambang air limbah dan metode analisa uji dapat diterapkan pada Laboratorium Terpadu, Institut Teknologi Kalimantan.
Opportunity of durian seed flour as an alternative to commercial wheat flour Hidayat, Jefri Pandu; Robiandi, Fadli; Arisalwadi, Meidi; Hariyadi, Asful
Journal of Agritechnology and Food Processing Vol 2, No 2 (2022)
Publisher : UNIVERSITAS MUHAMMADIYAH MATARAM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jafp.v2i2.12236

Abstract

The  high carbohydrate content  in  durian seed flour  (DSF) has the potential to be a source of food energy that can replace wheat flour in the world. DSF processing has an impact on color changes that affect  the quality of the product.  Therefore, the purpose of this study is to modify durian seeds to obtain the best properties of durian seed flour through the soaking process. The modification was carried out  in a 0.6%  (w/v)  solution of sodium metabisulfite at a temperature of 30 ºC with a drying  temperature of 50 ºC for 17 hours before grinding and sifting in a size of 80 mesh.   Treatment of immersion time variables in minutes (40, 60, 80, 100, 120) using the Complete Randomized Design (RAL) method with three attempts.  The flour is then being analyzed its physical  and chemical properties.  The best treatment was obtained at soaking time during 120 minutes which had an impact on changes in chemical and physical properties.  The test  results showed that the longer soaking time reduced the moisture content and ash content of durian seed flour, but partially improved the  other parameters tested.  The amount of DSA, DSM  and fat is less affected by soaking time. In conclusion, DSF has the potential to be used as a base for pastries or biscuits due to its low water and protein content.  In addition, based on the residual content of sulfite, the durian seed flour obtained in this study is safe for consumption in accordance with GSFA standards.
Pengaruh Penggunaan Chemical Poly Alumunium Chloride (PAC) dan Polyacrylamide (PAM) terhadap Proses Penjernihan Air di Purifier PLTU Tanjung Enim PT. BEST 3 x 10 MW Abdul Ghony, Muhammad; Jessika; Hariyadi, Asful
Jurnal Ilmiah Teknik dan Sains Vol. 1 No. 3 (2024): April : Jurnal Ilmiah Teknik dan Sains (JITS)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat AKIPBA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62278/jits.v1i3.26

Abstract

Proses penjernihan air di Pembangkit Listrik Tenaga Uap (PLTU) adalah langkah kritis untuk memastikan operasi yang efisien dan ramah lingkungan. Proses ini dimulai di Water Treatment Plant (WTP) dengan tahap awal di purifier water tank. Pada tahap ini, bahan kimia seperti Poly Aluminium Chloride (PAC) dan Polyacrylamide (PAM) sering digunakan untuk mengatasi kekeruhan dan memurnikan air. Namun, penggunaan PAC dan PAM dalam penjernihan air di PLTU tidak selalu mengikuti standar tetap operasional. Operator di lapangan sering menginjeksikan larutan berdasarkan pengamatan visual terhadap kondisi air sungai saat itu. Penggunaan yang tidak optimal atau dosis yang tidak tepat dapat menimbulkan efek samping, seperti pH air yang menjadi asam akibat penggunaan PAC yang berlebihan. Oleh karena itu, metode koagulasi-flokulasi diterapkan untuk proses penjernihan, menggunakan alat hot plate magnetic stirrer. Penelitian menunjukkan pengaruh penggunaan PAC dan PAM terhadap nilai pH dan kekeruhan (turbidity) air di purifier water tank serta dampak dari dosis yang digunakan.
Studi Pengolahan Air Kolam Kampus ITK yang Tercemar Polutan Alga dengan Menggunakan Metode Lumpur Aktif Muhammad Yusuf; Asful Hariyadi; Ahmad Maulidi; Juwita Payungallo
Jurnal Ilmiah Teknik dan Sains Vol. 2 No. 1 (2024): Agustus: Jurnal Ilmiah Teknik dan Sains (JITS)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat AKIPBA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62278/jits.v2i1.33

Abstract

Pengolahan air limbah dilakukan sebagai upaya pencegahan pencemaran air. Limbah suatu proses dikembalikan ke sungai hendaknya dalam keadaan sesuai nilai baku mutu. Salah satu metode yang digunakan pada industri untuk mengolah  limbah cair  adalah dengan penggunaan lumpur aktif.  Bakteri aerob pada lumpur aktif berperan sebagai pengurai bahan-bahan organik di dalam limbah cair. Pada penelitian ini, bioaktivator EM4 digunakan untuk menghilangkan bau pada air limbah dan memperpendek waktu aklimatisasi mikroorganisme. Penelitian ini bertujuan untuk menganalisis kadar COD, pengujian MLSS (Mixed Liquor Suspended Solid), dan NTU. Hasil penelitian menunjukkan bahwa kandungan air limbah masih melebihi nilai baku mutu yang telah ditetapkan sesuai Peraturan Pemerintah Nomor 22 Tahun 2021, dengan kadar COD sebesar 869.565 mg/L dan nilai MLSS sebesar 200 mg/L. Sehingga berdasarkan data tersebut air tersebut masih jauh dari kata layak untuk digunakan untuk keperluan rumah tangga. Hal ini disebabkan oleh banyak faktor diantaranya waktu pengendapan yang lama, kurangnya penambahan bakteri (EM4) dan volume tangki pada waktu retensi.
PELATIHAN MANAJEMEN CAFE DAN MEDIA SOSIAL DESA WISATA MERANTI, BALIKPAPAN Maryo Inri Pratama; Asful Hariyadi; Umar Mustofa; Ilham Faathir Putra; Nadia Puspita Ayu Ningtyas; Muhammad Daffa Rujid; Fachri Febrianto
J-ABDI: Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 8: Januari 2025
Publisher : Bajang Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53625/jabdi.v4i8.9320

Abstract

Kawasan Wisata Hutan Meranti di Kota Balikpapan, yang terletak di KM 15 Kelurahan Karang Joang, Kecamatan Balikpapan Utara. Meskipun memiliki daya tarik alam yang melimpah, kawasan ini menghadapi kendala seperti keterbatasan fasilitas dan kurangnya pengalaman manajerial. Untuk mengatasi masalah ini, dilakukan program pengabdian masyarakat melalui dua pelatihan utama: manajemen kafe dan manajemen media sosial. Pelatihan manajemen kafe bertujuan untuk meningkatkan keterampilan operasional dan pengelolaan kafe, serta menjadikannya pusat kuliner. Sementara itu, pelatihan manajemen media sosial bertujuan untuk meningkatkan kemampuan pemasaran digital melalui pembuatan konten kreatif menggunakan teknologi seperti ChatGPT. Hasil pelatihan menunjukkan adanya peningkatan pemahaman peserta dalam kedua bidang tersebut. Program ini diharapkan dapat memperkuat keberlanjutan pengelolaan kawasan, mendorong peningkatan ekonomi lokal, dan menjadikan Hutan Meranti sebagai destinasi wisata yang unggul dan berdaya saing.
Analysis of KCl and H2SO4 Electrolyte Concentration Variations on Specific Capacitance of Electrodes (CNT/PVA) Through Cyclic Voltammetry (CV) Reza, Mutia; Lusi Ernawati; Asful Hariyadi; Ranti Kusuma Wardhani; Thalia Winda Sari; Novi Sylvia
Jurnal Serambi Engineering Vol. 10 No. 2 (2025): April 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Escalating need for power usage is the author’s concern in producing this research. Supercapacitors are one of the energy storage devices that have better performance than conventional capacitors. Supercapacitor components generally consist of electrodes, electrolytes, and separators. Electrolytes have an important role that can affect the specific capacitance of supercapacitors. This research resulted in analyzing the type and variation of electrolyte concentrations in the form of KCl and H2SO4 at concentrations of 0.4; 0.7 and 1 M, respectively. Cyclic voltammetry (CV) was conducted using carbon nanotube electrodes which were molded into sheets using Polyvinyl Alcohol (PVA) binder. CV analysis aims to determine the supercapacitor performance as measured by the specific capacitance value. Based on the observation of the results obtained, the best specific capacitance in each type of electrolyte KCl and H2SO4 at a concentration of 1 molar is 55.561 and 54.981 F/g, respectively.
UTILISASI LIMBAH MINYAK JELANTAH MENJADI PRODUK SABUN PADAT DAN LILIN SEBAGAI UPAYA PENERAPAN ZERO WASTE Ernawati, Lusi; Lestari, Rizka; Yuniar, Rizka Ayu; Putri, Nita Ariestiana; Hariyadi, Asful
JMM (Jurnal Masyarakat Mandiri) Vol 8, No 5 (2024): Oktober
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v8i5.25997

Abstract

Abstrak: Limbah minyak goreng merupakan salah satu limbah rumah tangga yang berpotensi mencemari lingkungan. Residu dari proses penggorengan ini banyak mengandung asam lemak yang memiliki potensi untuk diolah menjadi produk sabun padat dan lilin. Kegiatan pengabdian masyarakat ini ditujukan untuk meningkatkan kemampuan mitra baik hard skill dan soft skill yakni mencakup: (1) mitra mampu memahami prosedur pembuatan sabun dan lilin dengan bahan dasar minyak jelantah, (2) terbentuknya ketrampilan mitra dalam membuat produk berupa sabun padat dan lilin aroma terapi, (3) mengasah kemampuan komunikasi mahasiswa ITK yang terlibat dalam tim panitia kegiatan pengabdian melalui presentasi dan hubungan sosial dengan peserta pelatihan. Selain itu kegiatan ini menjadi salah satu bentuk upaya penerapan zero waste untuk mengubah limbah menjadi produk yang memiliki nilai guna dan bernilai ekonomi. Adapun metode pelaksanaan kegiatan dilakukan melalui transfer of knowledge dan technology dengan langkah-langkah: (1) persiapan, (2) pelaksanaan, dan (3) evaluasi kegiatan. Pelaksanaan kegiatan dilakukan di kampus ITK sebagai host kegiatan berlokasi di lab kimia dasar dengan peserta siswa dan guru SMP 5 Balikpapan sebanyak 20 orang. Kegiatan ini dilakukan melalui beberapa metode yaitu ceramah, tanya jawab dan diskusi kemudian dilanjutkan praktik pembuatan sabun padat dan lilin. Kegiatan ini berjalan dengan baik dan disambut antusias oleh peserta pelatihan. Perubahan pemahaman peserta sebelum dan setelah pelaksanaan kegiatan tentang proses pembuatan sabun dan lilin dari limbah minyak minyak jelantah menjadi indikator keberhasilan kegiatan. Sebanyak 90% peserta (termasuk guru dan para siswa) belum mengetahui bagaimana cara pembuatan sabun padat dan lilin aroma terapi dari minyak jelantah sebelum mengikuti kegiatan pelatihan. Setelah dilakukan pelatihan dan praktik pembuatan, seluruh peserta telah mengetahui cara pembuatan sabun maupun lilin dari minyak jelantah serta diharapkan peserta pelatihan memiliki keterampilant memanfaatkan limbah minyak goreng di rumah.Abstract: One of the household pollutants that might contaminate the environment is cooking oil waste. Many fatty acids found in the frying residue have the ability to be converted into solid soap and wax compounds. This community service project aims to enhance partners' abilities, both hard and soft skills. These abilities include: (1) partners' comprehension of the steps involved in creating soap and candles from used cooking oil; and (2) partners' development of skills in creating solid soap and candle products. aromatherapy; (3) through presentations and interpersonal interactions with training participants, ITK students participating in the committee team for the service activity will improve their communication abilities. Aside from that, this activity is an attempt to achieve zero waste by turning rubbish into useful and valuable goods. The method for implementing activities is carried out through the transfer of knowledge and technology with the steps: (1) preparation, (2) implementation, and (3) evaluation of activities. Twenty students and teachers from SMP 5 Balikpapan participated in the program, which was hosted on the ITK campus in the basic chemistry lab. A variety of techniques were used to carry out this activity, including lectures, Q&A sessions, and group discussions. The process of creating solid soap and candles was the next step. The training participants eagerly welcomed and the activity proceeded smoothly. An indicator of the activity's success is how participants' knowledge of how to make soap and candles from leftover used cooking oil changed before and after the activity. Prior to taking part in the training session, up to 90% of participants—including teachers and students—did not know how to produce solid soap and aromatherapy candles out of spent cooking oil. All participants learned how to produce soap and candles from spent cooking oil after completing training and manufacturing practice, and it is anticipated that training participants would be able to use leftover cooking oil at home.
Study of the Effect of Ultraviolet Exposure Duration on Polypropylene Properties Saputra, Andri; Sitinjak, Tria Madeline; Warmiati; Hermiyati, Indri; Ratnaningsih, Wahyu; Hariyadi, Asful; Nurry, Dennis Farina
Jurnal Sains Materi Indonesia Vol. 27 No. 1 (2025): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2025.8959

Abstract

Prolonged exposure to ultraviolet (UV) radiation significantly alters the chemical, thermal, and mechanical properties of polypropylene (PP), leading to degradation and reduced material performance. This study aims to investigate the effect of exposure length to UV on the chemical properties (functional and thermal) and mechanical properties (tensile strength) of PP. Specimens were subjected to UV exposure for 0 (control), 125, 175, 225, 275, 325, 375, and 625 days. FTIR analysis indicates UV exposure chemically degrades polypropylene (PP) by generating new oxygenated groups (–OH and C=O at 3368 cm⁻¹ and 1586 cm⁻¹) and damaging its main molecular structure (C-H at 2949 cm⁻¹, 2867 cm⁻¹, and 841 cm⁻¹). Prolonged UV exposure alters the thermal properties of polypropylene (PP), as indicated by DSC analysis, which shows broadening and shifting of the melting peak (175–180 °C) due to crystallinity changes and increased oxidation. The mechanical properties also deteriorate, with a critical reduction in tensile strength, particularly between 225 and 375 days, indicating an accelerated degradation phase. After 625 days, tensile strength declines by approximately 59%, confirming the substantial impact of extended UV exposure on PP’s durability.
Co-Authors Abdul Ghony, Muhammad Adhe Paramita Ahmad Maulidi Ario Sandy Bangkit Gotama Dian Rahmawati Fachri Febrianto Fachry Abda El Rahman Fadli Robiandi Hermiyati, Indri Hidayat, Jefri Pandu Ilham Faathir Putra Jefri Pandu Hidayat Jessika Juwita Payungallo Khoirunnisa Hidayat, Dinda Kusuma, Muhammad Azi Lestari, Rizka Lusi Ernawati Made Yuri Suryani Maryo Inri Pratama Meidi Arisalwadi Muhammad Abdul Ghony Muhammad Daffa Rujid MUHAMMAD YUSUF Nadia Puspita Ayu Ningtyas Nita Ariestiana Putri Novi Sylvia Nurry, Dennis Farina Nurwijayanti Purwanto, Moch. Putra Putra Putri, Nita Ariestiana Ranti Kusuma Wardhani Ratnaningsih, Wahyu Reza, Mutia Rika Awalin Safitri Riza Alviany Rizka Ayu Yuniar Sembiring, Rinawati Sitinjak, Tria Madeline Thalia Winda Sari Umar Mustofa Umi Sholikah Warmiati