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All Journal International Journal of Advances in Applied Sciences CHEMICA Jurnal Teknik Kimia Indonesian Journal of Science and Technology CHEESA: Chemical Engineering Research Articles Indonesia Berdaya Equilibrium Journal of Chemical Engineering Indonesian Journal of Chemical Engineering
Dhias Cahya Hakika
Universitas Ahmad Dahlan
Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Veterinary Other

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 1 
Experimental Study on The Characterization of Pyrolysis Products from Bagasse (Saccharum Officinarum L.): Bio-oil, Biochar, and Gas Products Siti Jamilatun; Joko Pitoyo; Shinta Amelia; Alfian Ma’arif; Dhias Cahya Hakika; Ilham Mufandi
Indonesian Journal of Science and Technology Vol 7, No 3 (2022): IJOST: VOLUME 7, ISSUE 3, December 2022
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v7i3.51566

Abstract

Sugarcane bagasse is one of the most abundant biomasses. This study aims to examine the characteristics of bagasse using a pyrolysis system to produce liquid, solid (Biochar), and gaseous. A fixed bed reactor was installed in pyrolysis with temperature variations from 300 to 600°C. The ultimate and proximate analysis was applied to evaluate the characteristic of bagasse. The experimental result found that the maximum bio-oil was obtained at a temperature of 550°C. Several characterizations were done, including gas chromatography and surface area analysis. The Levoglucosan compound of 78% area. The temperature effect on pyrolysis influenced the O/C ratio, H/C ratio, HHV value, and surface area of biochar. The High Heating Value was obtained from 16.698 to 18.496 kJ/kg. Biochar results indicated that the surface area, average pore size, and total pore volume are 180.3-198.0 m2/g, 1.42-4.33 nm, and 0.11-0.12 nm, respectively. The study also analyzed its composition in biochar.
Purification of Raw Water from Pollutant using Coupling Membrane Filtration to UV Irradiation: Preliminary Study Dhias Cahya Hakika; Zahrul Mufrodi; Shinta Amelia
CHEMICA: Jurnal Teknik Kimia Vol 9, No 3 (2022): December 2022
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v9i3.25212

Abstract

The low quality of groundwater, along with the increasing demand for drinking water for the community, encourages the need for water treatment technology to produce quality drinking water that is environmentally friendly. One promising method to be applied is membrane technology. In water treatment systems, membrane technology is often not used alone but combined with other methods to improve water quality more effectively. This study aims to apply several methods for the raw water treatment system to drinking water, including membrane filtration and UV irradiation. The removal of chemical pollutants was investigated and compared to the standard value from Minister of Health Regulation No. 492 Year 2010 for drinking water quality. This coupled treatment successfully improved the water quality. The concentration of chemical and biological pollutants such as total dissolved solids (TDS), Fe, Zn, Pb, and total Coliform were reduced by 58.53%; 43.48%; 88.89%; 66.67%.; and 86.15%, respectively. The results indicate that coupling microfiltration membrane to UV irradiation method can be an effective treatment to remove chemical pollutants and enhance the quality of raw water for drinking water preparation.
Combustion Quality Analysis of Bio-Briquettes from Mixture of Coconut Shell Waste and Coal with Tapioca Flour Adhesive Dhias Cahya Hakika; Siti Jamilatun; Shafa Zahira; Riska Setyarini; Aster Rahayu; Remmo Sri Ardiansyah
Indonesian Journal of Chemical Engineering Vol. 1 No. 1 (2023): Indonesian Journal of Chemical Engineering
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v1i1.452

Abstract

Agroindustry residues can be utilized as a resource for alternative energy sources such as bio-briquettes. Using agro-industry residue is also a solution to reduce pollution caused by biomass waste in the environment. This article highlights the combustion quality analysis of biomass waste in the form of bio-briquettes with binding materials prepared from tapioca flour. The biomass used is a mixture of coconut shell charcoal and coal to improve the quality of the bio-briquettes. In this study, bio-briquettes were manufactured using a screw press system. The combustion quality of bio-briquettes with various percentage compositions (0:100, 25:75, 50:50, 75:25, 100:0) of coconut shell charcoal and coal was investigated, i.e., moisture content, ash content, combustion rate, and calorific value. Results show that the calorific value of most bio-briquettes produced in this study was higher than the standard calorific value according to  SNI Standard No.1/6235/2000 (≥ 5,000 cal/gr). The optimum composition to produce bio-briquette with good quality based on the standard is 75:25 (coconut shell charcoal: coal), which had a moisture content of 7.6325%, ash content of 6.9697%, combustion rate of 0.1833 gr/min, and caloric value of 5833.78 cal/gr.
Preparation and characterization of cellulose acetate propionate membrane Maryudi Maryudi; Dhias Cahya Hakika; Firda Mahira Alfiata Chusna; Amillia Amillia
International Journal of Advances in Applied Sciences Vol 13, No 4: December 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v13.i4.pp891-899

Abstract

Membrane technology is a technique in water and wastewater treatment that has many advantages. This study focuses on the manufacture and characterization of cellulose acetate propionate (CAP) membranes using the phase inversion method. The CAP is preferable since it is a biopolymer that is environmentally friendly and cheap. The production of CAP membrane was carried out using phase inversion method, and varied in 3 different concentrations of CAP i.e., 13, 14, and 15% wt., with additional material of polyethylene glycol (PEG). The characterization was conducted using scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) analysis to determine its morphology, pores, and functional groups. The results show that the membrane containing 13% wt. CAP exhibits higher porosity with more macropores than a membrane with 14 and 15% wt. CAP. However, membranes with higher concentrations of CAP show more uniform pores and fewer macropores. FTIR analysis confirmed the presence of functional groups in the membrane such as C-O, -CH3, C=O, C-H, and –OH. It is also found that there is a shift in Wavenumber due to the increase in the concentration of CAP in each membrane.
Treatment of Textile Industrial Wastewater using Membrane Technology: A Review Amillia Amillia; Maryudi Maryudi; Firda Mahira Alfiata Chusna; Dhias Cahya Hakika; Aster Rahayu; Imam Santosa; Hamad Khudhair Mohammed
CHEESA: Chemical Engineering Research Articles Vol. 7 No. 2 (2024)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v7i2.19132.90-102

Abstract

Textile industry wastewater is a very complex pollutant-containing waste with high dye intensity, requiring proper and appropriate treatment. Membrane technology is one of the appropriate methods for treating textile wastewater due to several advantages such as environmentally friendly and biopolymer-based processing. Therefore, this review aimed to determine the effectiveness of membrane technology and provide information regarding the appropriate treatment of textile wastewater. The articles subjected to review were obtained from several journal sources such as ScienceDirect, Elsevier, Springer, Google Scholar, and national journals. The results showed that several membranes had been used in textile wastewater treatment, such as PTFE (Polytetrafluoroethylene), PES (Polyethersulfone), Polysulfone-Polyvinyl Pyrrolidone Blend Polymer Composite Membrane, CA (Cellulose Acetate), Cellulose Membrane of Sargassum Sp., polysulfone (PSF), Bacterial Cellulose Membrane, and cellulose acetate propionate (CAP). Furthermore, membrane technology was found to reduce dye pollutants in textile wastewater with the highest coefficient value of approximately 97%.
Revitalisasi Kebun Edukatif melalui Budidaya Tanaman Herbal untuk Mewujudkan Ketahanan Pangan dan Ekonomi Sirkular Berbasis Komunitas [Revitalizing Educational Park through Herbal Plant Cultivation to Support Community-Based Food Security and Circular Economy] Dhias Cahya Hakika; Hayati Mukti Asih; Phisca Aditya Rosyady; Revaldo Andriansyah; Kenedy Wijaya; Ayu Intan Afiani Auliya; Viola Lulu Aulia
Indonesia Berdaya Vol. 7 No. 1 (2026)
Publisher : UKInstitute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47679/ib.20261424

Abstract

Food security is one of the key strategic issues in sustainable development, particularly at the local community level, which is vulnerable to food crises and climate change. To address this challenge, this community service activity was conducted with the aim of improving knowledge and skills among community members, especially local farmer groups in cultivating herbal plants as a strategy for local food resilience and the implementation of a circular economy at Kebun Dakwah Muhammadiyah Yogyakarta. The cultivated commodities include ginger, aromatic ginger (kencur), turmeric, temulawak, and lemongrass, all of which have high potential as raw materials for value-added herbal products. The educational program was designed using a participatory approach, involving lectures, hands-on training, and mentoring by a multidisciplinary team of lecturers and students from Universitas Ahmad Dahlan’s KKN (Community Service Program). The training covered land preparation, seed selection, eco-friendly cultivation techniques, and post-harvest product processing education to support the circular economy concept. Evaluation results showed a significant increase in participants’ understanding of the benefits of herbal plants (increasing 29%) and cultivation techniques (increasing 30%). This initiative also supports the optimization of existing post-harvest technologies such as solar dryers, while strengthening the circular economy ecosystem in the area. Abstrak. Ketahanan pangan merupakan salah satu isu strategis dalam pembangunan berkelanjutan, khususnya di tingkat komunitas lokal yang rentan terhadap krisis pangan dan perubahan iklim. Untuk menjawab tantangan ini, kegiatan pengabdian kepada masyarakat ini dilaksanakan dengan tujuan meningkatkan pengetahuan dan keterampilan masyarakat khususnya kelompok petani komunitas dalam membudidayakan tanaman herbal sebagai bagian dari strategi ketahanan pangan lokal dan implementasi ekonomi sirkular di Kebun Dakwah Muhammadiyah Yogyakarta. Komoditas yang dibudidayakan meliputi jahe, kencur, kunyit, temulawak, dan sereh wangi yang memiliki potensi tinggi sebagai bahan baku produk olahan herbal bernilai tambah. Program edukasi dirancang melalui pendekatan partisipatif dengan metode penyuluhan, pelatihan praktik langsung, dan pendampingan oleh tim dosen lintas disiplin dan mahasiswa Kuliah Kerja Nyata (KKN) Universitas Ahmad Dahlan. Edukasi dilakukan mulai dari penyiapan lahan, pemilihan bibit, teknik budidaya ramah lingkungan, hingga edukasi pengolahan produk pascapanen sebagai implementasi konsep ekonomi sirkular. Hasil evaluasi menunjukkan adanya peningkatan signifikan dalam pemahaman peserta terhadap manfaat tanaman herbal sebanyak 29% dan teknik budidayanya sebesar 30%. Kegiatan ini juga mendukung optimalisasi teknologi fasilitas pascapanen yang telah ada di lokasi pengabdian seperti rumah pengering, sekaligus memperkuat ekosistem ekonomi sirkular di kawasan tersebut.
Manufacture of Industrial Scale Bagasse Biochar: Effect of Temperature And Residence Time And Biochar Characterization Jaka Kuncara; Martomo Setyawan; Dhias Cahya Hakika
Equilibrium Journal of Chemical Engineering Vol 8, No 2 (2024): Volume 8, No 2 December 2024
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v8i2.95545

Abstract

Abstract. Bagasse is a waste that can still be utilized, one of which is processed into biochar. In this study, bagasse waste came from a sugar factory in Majalengka, Cirebon, West Java. The bagasse pyrolysis process was carried out at PT XXX biochar factory located in the area. Industrial scale biochar production is done by Rotary Carbonization Furnace. The research objective was to characterize biochar with variable residence time and pyrolysis temperature. Biochar was characterized based on physicochemical properties and surface composition analysis for use as a soil improver and adsorbent. The test results show that residence time and pyrolysis temperature affect biochar products. Physical characterization showed that the pyrolysis residence time of 24.73 minutes with a temperature of 400 oC gave biochar results with pH (8.92), c-organic (24.15%), total N (0.2%), P2O5 (0.17%) and high C/N ratio (1,208.00). This biochar has good quality for application as a soil improver, especially in increasing carbon storage capacity and improving soil pH. The high C/N ratio and low nitrogen content require alloying with other sources to increase nitrogen and phosphorus and lower the C/N ratio. Chemical characterization by BET test showed that pyrolysis residence time of 24.73 min at 400 oC gave the best results in terms of increasing surface area (0.554 m²/g) and pore volume (0.00364 cc/g), making it the optimal temperature to produce biochar with high adsorption capacity. Surface characterization by SEM-EDX mapping analysis showed that the pyrolysis residence time of 24.73 min at 400 oC gave results with relatively high composition of carbon (82.17%), oxygen (14.89%), silica (1.97%), potassium (0.42%), and made it more effective for soil conditioner applications.Keywords: Bagasse, Biochar, Pyrolysis.
Co-Authors Alfian Ma’arif Amillia Amillia Asih, Hayati Mukti Ayu Intan Afiani Auliya Firda Mahira Alfiata Chusna Hamad Khudhair Mohammed Ilham Mufandi Imam Santosa Jaka Kuncara Joko Pitoyo Kenedy Wijaya Martomo Setyawan Maryudi Maryudi Phisca Aditya Rosyady Rahayu, Aster Remmo Sri Ardiansyah Revaldo Andriansyah Riska Setyarini Shafa Zahira Shinta Amelia Siti Jamilatun Viola Lulu Aulia Zahrul Mufrodi, Zahrul