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All Journal VALENSI Reaktor JURNAL KIMIA SAINS DAN APLIKASI JURNAL KESEHATAN LINGKUNGAN (Journal of Environmental Health) Biopropal Industri Jurnal Riset Industri Hasil Hutan Indonesian Journal of Science and Technology Konversi Info-Teknik JTERA (Jurnal Teknologi Rekayasa) Tropical Wetland Journal Buletin Profesi Insinyur Dinamika Kerajinan dan Batik : MAJALAH ILMIAH Jurnal Teknik Kimia Indonesia Jurnal Teknologi Berkelanjutan Jurnal Ilmiah Berkala Sains dan Terapan Kimia JOURNAL OF WETLANDS ENVIRONMENTAL MANAGEMENT Equivalent: Jurnal Ilmiah Sosial Teknik Jurnal Sains Materi Indonesia JURNAL REKAYASA KIMIA & LINGKUNGAN Jurnal Bahan Alam Terbarukan Dinamika Kerajinan dan Batik: Majalah Ilmiah
Chairul Irawan
Department Of Chemical Engineering, Faculty Of Engineering, Universitas Lambung Mangkurat, South Kalimantan - 70714, Indonesia
Agriculture, Biological Sciences & Forestry Arts Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering 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 Public Health Social Sciences Transportation Other

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Biopolymer of Chitosan from Fish Scales as Natural Coagulant for IronContaminated Groundwater Treatment Irawan, Chairul; Nata, Iryanti Fatyasari; Putra, Meilana Dharma; Marisa, Rosmasari; Asnia, Mira; Arifin, Yulian Firmana
Jurnal Rekayasa Kimia & Lingkungan Vol 13, No 2 (2018): Jurnal Rekayasa Kimia & Lingkungan (December, 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.v13i2.10601

Abstract

Chitosan, the de-acetylated chitin derivative, was evaluated for its ability to be used as a natural coagulant for Martapura groundwater treatment. This study is used chitosan derived from original fish scales of Kalimantan called Papuyu (Anabas testudineus) for the treatment of iron ion-containing Martapura groundwater through coagulation-flocculation method. The reduction efficiency of iron ion removed by coagulation-flocculation processes using chitosan from Papuyu fish scales is the primary evaluating parameter. The obtained chitosan have been characterized and analyzed by Fourier transforms infrared spectroscopy (FTIR), X-ray Fluroscence (XRF) and Scanning electron microscopy (SEM). Using of the chitosan from Papuyu fish scales as coagulant at neutral pH and room temperature led to decreasing the groundwater iron concentration become 3.43 mg/L (around 71% removal). The result was then compare to the coagulation-flocculation treatment using the commercial chitosan from shrimps shell (93% deacetylated). Moreover, its found the coagulation-flocculation treatment using the chitosan from fish scales as coagulant more favor than the commercial one.
Sustainable Magnetic Biocomposites Palm Oil Empty Fruit Bunch/Sago Dregs-Based with High Active Amine as Green Materials Naufal, Allam; Irawan, Chairul; Juwita, Rinna; Nata, Iryanti
Jurnal Bahan Alam Terbarukan Vol. 13 No. 2 (2024): December 2024 [Nationally Accredited Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v13i2.14951

Abstract

Palm oil empty fruit bunches (POEFB) and sago dregs (SD) are agricultural wastes that contain cellulose fibers. The one of utilization is used as raw materials for magnetic biocomposites. The objectives of this research are to determine the optimal composition of POEFB-SD fibers for the formation of amine magnetic biocomposite. The resulting biocomposite is characterized based on morphological, amine content, elemental content, crystalline structure, and functional groups. First, POEFB and SD)fibers were dried and ground to approximately 60 mesh. These fibers then underwent delignification at 80 °C for 2 h using a 1% w/v NaOH solution. A one-step solvothermal process followed, wherein different ratios of delignified POEFB and SD fibers (1:0; 1:1; 1:2; and 1:3) were added to a mixture containing ethylene glycol, FeCl3·6H2O, and 1.6-hexanediamine, and heated to 200 °C for 6 h. The resulting magnetic biocomposites contain Fe and amine at about 98.26% and 3.83 mmol.g, respectively. The magnetite was confirmed by X-Ray diffraction (XRD) through characteristic peaks at 36°, 43°, and 57°. Furthermore, Fourier-Transform Infrared Spectroscopy (FT-IR) revealed N–H bending vibrations and Fe-O bonds in the biocomposites at 1620 cm−1 and 585 cm−1, respectively. The arrangement of the matrix, iron, and amine groups on the biocomposites' is promising candidates as good adsorbents for advanced biocomposites and green materials.
Aluminum Waste as Electrode for Home Textile Industry Wastewater Treatment using Batch Electrocoagulation Process: Studies on Operating Parameters Irawan, Chairul; Mu'minah, Ridhayanti; Purnawilda, Agita; Fatyasari Nata, Iryanti
Jurnal Sains Materi Indonesia Vol. 25 No. 2 (2024): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2024.3120

Abstract

The manufacture of the Sasirangan home textile industry involves coloring and dyeing processes using synthetic dyes in large quantities. These contaminants of dyes and organic materials would cause high color and chemical oxygen demand (COD) contaminants values. This study aims to characterize the wastewater of batik-modified Sasirangan and determine the effect of current density and length of operating time on color removal and reduction of COD in Sasirangan home textile industry wastewater through the batch electrocoagulation process. The method used in this research is an electric current flowing in the same direction to the Sasirangan home textile industry wastewater in a reactor with dimensions of 310  180  240 mm3. The electrode used is aluminum alloy type 1100. The aluminum/aluminum (Al/Al) electrode is used in this electrocoagulation (EC) process, then connected to a direct current (DC) power supply. The experiment was carried out at room temperature using an electrode distance of 2 cm with variations in the time of the electrocoagulation process for 15–120 minutes. The experiment was repeated for variations in pH (4–9) with a current density of 3.5–5.5 mA/cm2. Furthermore, an analysis of the color removal and the decrease in the concentration of COD was carried out. The results showed that the contaminant content in Sasirangan home textile industry wastewater decreased significantly, whereas the optimal conditions for the EC reaction were determined using color and COD removal efficiency parameters. The decrease in color and COD concentrations occurred at a current density of 5.5 mA/cm2 with a pH of 4 for 120 minutes, around 1110 PtCo and 90.4 mg/L of COD, respectively
Coconut Shells, Water Hyacinth and Rice Husks are Very Effective in Improving the Quality of Physical and Chemical Standards of Dug Well Water in Flood Areas Marlinae, Lenie; Biyatmoko, Danang; Husaini; Irawan, Chairul; Arifin, Syamsul; R Saidi, Akhmad; Fithria, Abdi; Zubaidah, Tien; M. Ratodi; A. Mourad, Khaldoon; Khairiyati, Laily; Waskito, Agung; H.D Lasari, Hadrianti; Khoiroh, Ianatul
JURNAL KESEHATAN LINGKUNGAN Vol. 16 No. 3 (2024): JURNAL KESEHATAN LINGKUNGAN
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkl.v16i3.2024.255-265

Abstract

Introduction: Ensuring access to clean and safe drinking water is crucial, especially in flood-prone regions where the water quality in dug wells can deteriorate due to various physicochemical factors. This research was aimed to measure the effectiveness of natural materials in improving water quality based on physicochemical parameters and to compare water quality before and after treatment in Astambul Subdistrict of Banjar Regency, South Kalimantan Province. Methods: The study involved a survey of 192 private boreholes and dug wells across five villages in the Astambul Subdistrict, with 30 samples selected for detailed analysis. Key physicochemical parameters analyzed included total dissolved solids (TDS), dissolved oxygen (DO), turbidity, and total suspended solids (TSS). TDS, with a standard limit of 50 mg/L, served as a primary water quality indicator. DO, essential for gauging water oxygenation, and was measured as it results from photosynthesis and atmospheric absorption. Turbidity was assessed using a turbidimeter to determine water clarity, and a UV-vis Spectrophotometer 2008 was utilized to measure levels of iron (Fe) and mangasene (Mn). Results and Discussion: The findings demonstrated that coconut shells, husks, and water hyacinths improved water quality across physical and chemical parameters. Statistical analysis using t-tests showed improvements in these parameters after treatment. For example, DO levels increased in multiple villages, with the highest percentage in Kaliukan Village (59.2%) and decreases in turbidity and TSS. Conclusion: The study concluded that coconut shells, husks, and water hyacinths have potential to enhance physicochemical quality of water.
Treatment of Chemical and Biological Oxygen Demand on Batik-Modified Sasirangan Textile Wastwater Using Electrocoagulation Process Paramita, Andika Putri; Mirwan, Agus; Mu'minah, Ridhayanti; Purnawilda, Agita; Irawan, Chairul -
Dinamika Kerajinan dan Batik: Majalah Ilmiah Vol. 40 No. 2 (2023): DINAMIKA KERAJINAN DAN BATIK : MAJALAH ILMIAH
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Industri Kerajinan dan Batik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22322/dkb.v40i2.8137

Abstract

Electrocoagulation process on batik-modified sasirangan textiles wastewater treatment used aluminum electrodes (Al6061-T6) from the waste scraps of the aluminum furniture industry. Batch experiments at room temperature were carried out at an initial of pH 4. The parameters effect such as time reaction (5– 120 min), current density (3.5–5.5 mA/cm2), and the distance between the electrodes (2–5 cm) were evaluated to determine the optimum condition for COD and BOD5 removal. The optimum condition for the electrocoagulation process on batik-modified sasirangan textiles wastewater was selected at a time of 15 minutes, 5.5 mA/cm2 of current density, and 2 cm of electrode distances. Under those conditions around 59.60% of COD and 62.47% of BOD5 removal efficiencies were achieved. Both kinetics in COD and BOD5 removal with electrocoagulation reaction follows the half-order reaction. Reusing the leftover aluminum from furniture manufacturing as electrodes in the electrocoagulation process is quite effective for treated batik-modified sasirangan to meet the quality standard of clean water
Bioremediation of Former Coal Mining Land Using Natural Organic Matter Oktaviano Catur Arya; Chairul Irawan; Primata Mardina
Equivalent: Jurnal Ilmiah Sosial Teknik Vol. 8 No. 3 (2026): Equivalent: Jurnal Ilmiah Sosial Teknik
Publisher : Politeknik Siber Cerdika Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59261/jequi.v8i3.389

Abstract

Background: Post-coal-mining soils are typically characterized by severe edaphic degradation, including acidic pH, low cation exchange capacity (CEC), nutrient deficiencies, and reduced microbial activity. Methods: This study evaluated the effectiveness of compost, manure, and biochar applied at 0%, 2.5%, 5%, and 10% (w/w) in improving soil properties through a twelve-week ex situ bioremediation process. Measured parameters included pH, CEC, total N, available P and K, organic C, moisture, and microbial dynamics, with Zea mays used as an agronomic indicator. Results: Biochar produced the largest increases in soil pH and CEC, while compost and manure more effectively enhanced organic carbon and nitrogen mineralization. Soil pH improvement followed first-order kinetics with treatment-specific rate constants. The 10% amendment rate yielded the highest Zea mays growth. Conclusion: Overall, compost, manure, and biochar effectively improved post-mining soil quality, nutrient availability, and corn growth, with biochar showing the strongest overall effect. These amendments offer economical, environmentally friendly alternatives for sustainable bioremediation, reclamation, and revegetation of former coal mine land.
Co-Authors A. Mourad, Khaldoon Abdi Fithria Abubakar Tuhuloula Agita Purnawilda Agita Purnawilda Agus Mirwan Agus Mirwan Agus Mirwan Akhmad R Saidi Al-Muttaqii, Muhammad Aliah aliah Amalia Enggar Pratiwi Ammara Ulfa Azizah Andika Putri Paramita Andri Taruna Rachmadi Andri Taruna Rachmadi, Andri Taruna Anisa Purwanti Aproditha Yulianingtias Ardiansyah Ardiansyah Ardiansyah Ardiansyah Asnia, Mira Aulia Rahma Ayu Ratma Sari Bibin Bintang Andriana Danang Biyatmoko Danang Biyatmoko, Danang Dwi Rasy Mujiyanti Emil Zacky Effendi Erdina Lulu Atika Rampun Fatyasari Nata, Iryanti H.D Lasari, Hadrianti Hesti Wijayanti Hesti Wijayanti Husaini Huzairi Huzairi Iryanti Fatyasari Nata, Iryanti Fatyasari Jefriadi Jefriadi Khoiroh, Ianatul Laily Khairiyati Lenie Marlinae Lenie Marlinae Loveana Brena Honesty, Loveana Brena M. Ratodi Mahmud Mahmud Maimunawaro Maimunawaro Marisa, Rosmasari Maulana Wahyu Noor Ramadhan Meda Nur Anisa Megayulia Nooryaneti Meilana Dharma Putra Melinda, Rizani Aulia Mira Asnia Misnawati Misnawati Mu'minah, Ridhayanti Muhammad Abrar Firdausy Muhammad Daffa Salaahuddin Muhammad Jauhar Mahdi Muhammad Sadiqul Iman Muthia Elma Naisya Hanan Naisya Hanan, Naisya Nata, Iryanti Naufal, Allam Nino Rinaldi Norhasanah Norhasanah Norhasanah Norhasanah, Norhasanah Nuryati Nuryati Oktaviano Catur Arya Paramita, Andika Putri Primata Mardina Primata Mardina Purnawilda, Agita Purwanti, Anisa R Saidi, Akhmad Rachmad Edo Syafutra Ridhayanti Mu'minah Ridhayanti Mu'minah Rinna Juwita Rinny Jelita Riskawanti Suwandi Riskawanti Suwandi, Riskawanti Rizani Aulia Melinda Rodiansono Rodiansono Rosmasari Marisa Sari, Ayu Ratma Sazila Karina Rahman Setiawan, Muhammad Fazar Sherly Uthami W.P.H Sherly Uthami W.P.H, Sherly Uthami Siswahyudianto Syamsul Arifin Syamsul Arifin Sylvera Bella Priscilla Tiara Nur Awalia Tiara Nur Awalia, Tiara Nur Tien Zubaidah Waskito, Agung Yudhi Christian Hariady Yulia Vinataningsih Yulian Firmana Arifin Yuliana Ningsih Yulianingtias, Aproditha Yustia Wulandari Mirzayanti