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All Journal International Journal of Advances in Applied Sciences Abdimas Jurnal Bahan Alam Terbarukan Eksergi: Chemical Engineering Journal Prosiding Semnastek IJEMS (Indonesian Journal of Environmental Management and Sustainability) CHEESA: Chemical Engineering Research Articles Jurnal Abdi Insani MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Indonesia Berdaya Prosiding Seminar Nasional dan Call Paper STIE Widya Wiwaha Indonesian Journal of Chemical Engineering
Dhias Cahya Hakika
Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro Jln. Prof. Soedarto, Tembalang, Semarang, 50239, Telp/Fax: (024)7460058
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Peningkatan Pengetahuan Peserta Training of Trainer (ToT) “Pelatihan Batik dengan Pewarnaan Alami” dengan Penyuluhan Mengenai Pengolahan Limbah Cair Industri Batik Hakika, Dhias Cahya; Mufrodi, Zahrul; Evitasari, Rachma Tia; Bhakti, Caraka Putra; Robi’in, Bambang
Jurnal Abdimas Vol 25, No 2 (2021): December 2021
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/abdimas.v25i2.34828

Abstract

Batik tulis merupakan salah satu warisan kesenian tradisional budaya Indonesia, khususnya bagi Daerah Istimewa Yogyakarta yang sejak tahun 2014 ditetapkan sebagai Kota Batik Dunia oleh World Craft Council. Namun, eksistensi batik tulis pelan-pelan tergeser seiring dengan perkembangan teknologi yang menyebabkan semakin maraknya produksi batik cap dan batik cetak sehingga minat generasi muda terhadap batik tulis menurun. Untuk meningkatkan minat dan motivasi generasi penerus agar lebih mengenal batik dan proses pembuatannya, dilakukan kegiatan “Pelatihan Batik dengan Pewarnaan Alami” yang ditujukan untuk anak-anak SD bekerja sama dengan Balai Agung Cendana dengan melibatkan mahasiswa sebagai instruktur. Sebelum diterjunkan menjadi instruktur pelatihan, mahasiswa terlebih dahulu mengikuti kegiatan training of trainer (ToT) agar pelatihan dapat berjalan dengan baik. Agar memiliki pemahaman yang komprehensif tentang proses pembuatan batik, para peserta ToT juga diberikan penyuluhan tentang limbah cair industri batik. Kegiatan pengabdian ini bertujuan untuk meningkatkan pengetahuan dan pemahaman para peserta ToT mengenai limbah cair yang dihasilkan dari pewarnaan batik beserta dampak lingkungan dan metode pengolahannya. Para peserta ToT nantinya akan menjadi instruktur pada pelatihan membatik sehingga diharapkan dapat turut meneruskan dan menyebarluaskan informasi mengenai pengetahuan yang diperoleh. Kegiatan pengabdian dilaksanakan dengan metode penyuluhan dan terdiri dari tahap persiapan dan sosialisasi, pelaksanaan penyuluhan, serta evaluasi. Pelaksanaan kegiatan pengabdian dilakukan pada tanggal 22 Desember 2021 dengan lokasi di Balai Agung Cendana Yogyakarta. Kegiatan penyuluhan berhasil dilaksanakan kepada para peserta sebanyak 40 orang. Hasil evaluasi kegiatan ini menunjukkan adanya peningkatan pengetahuan dan pemahaman para peserta tentang dampak limbah cair industri batik terhadap lingkungan dan metode pengolahannya sebesar 32,80%, dari semula 59,73% menjadi 92,53%.   
Implementation of Rotary Dryer for Cassava Drying as a Raw Material for Mocaf Flour Production Sudarmini, Sudarmini; Subrata, Arsyad Cahya; Hakika, Dhias Cahya
Jurnal Abdimas Vol 27, No 2 (2023): December 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/abdimas.v27i2.48324

Abstract

Modified cassava flour (mocaf) is one of the innovative cassava processed products with high market value and promising business prospects as a substitute for imported wheat flour. The women's farming group (KWT) Ngudi Sari, located in the village of Tanjungsari, Gunungkidul, has processed cassava into mocaf flour and various cassava-based products, including cassava chips, tiwul, gatot, mocaf sticks, and various cookies. During the production process of mocaf flour, one of the common challenges faced is the drying of cassava chips, which has traditionally relied on sunlight and home-based drying methods. With the increasing demand for mocaf flour, large-scale drying of cassava chips becomes necessary. To address this challenge, a technology of rotary dryer is implemented to KWT Ngudi Sari to enhance the efficiency and effectiveness of the cassava raw material drying process. This outreach project aims to empower KWT Ngudi Sari and boost the production capacity of the resulting mocaf flour. The application of this appropriate technology is expected to improve the quality of cassava as a raw material for mocaf production and enhance its energy efficiency, thus contributing to the economic development of KWT Ngudi Sari. Throughout the project, mentoring, monitoring, and evaluation are also conducted to measure the progress in knowledge and skills of the partners involved.
Pembuatan Serbuk Fikobiliprotein dari Spirulina platensis melalui Proses Freezing-Thawing dan Freeze-Drying Mazareta, Selva; Sulistiawati, Endah; Evitasari, Rachma Tia; Setyawan, Martomo; Hakika, Dhias Cahya
Eksergi Vol 21, No 3 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i3.12453

Abstract

Mikroalga golongan Cyanophyta seperti Spirulina Platensis (SP) merupakan salah satu sumber makanan fungsional yang bergizi. SP mengandung senyawa fikobiliprotein (PBP) yang merupakan komponen terbesar dari protein dan berfungsi sebagai antioksidan dan antikanker. Penelitian ini bertujuan untuk mengetahui pengaruh perbandingan solven-biomassa (S/B), waktu pengeringan beku, dan luas permukaan wadah sampel pada pengeringan beku terhadap serbuk PBP yang dihasilkan. Eksperimen diawali dengan proses perendaman SP kering (1,5 dan 3 g) selama 1 jam, pembekuan selama 24 jam, thawing, penyaringan vakum (30-90 menit) dan pengeringan beku (freeze-drying) pada filtrat yang diperoleh. Analisis konsentrasi PBP dalam filtrat dilakukan dengan mengukur absorbansinya menggunakan UV-Vis Spektrofotometer diuji pada panjang gelombang 562, 615, dan 652 nm.  Kadar air pada serbuk PBP setelah dilakukan proses freeze-drying diukur secara gravimeteri. Variasi yang dilakukan meliputi perbandingan S/B (6,67-133,33) mL air suling/g SP kering. Variasi waktu freeze drying selama 24 dan 32 jam. Waktu optimum untuk penyaringan vakum 30,55 menit dan menghasilkan konsentrasi PBP tertinggi (7,639 g/L). Nilai S/B optimum didapatkan  sebesar 20 mL/g dengan rendemen 112,32 mg/g (SP kering). Luas permukaan wadah sampel pada pengeringan beku yang terbaik adalah 427,5 cm2 dan banyaknya air yang teruapkan sebesar 99,71% dari berat filtrat
Application of Cellulose Acetate Propionate Biopolymer Membrane in The Treatment of Textile Wastewater Containing Remazol Dye Amilia, Amilia; Maryudi, Maryudi; Rahayu, Aster; Hakika, Dhias Cahya; Suradi, Siti Samahani
Jurnal Bahan Alam Terbarukan Vol 13, No 1 (2024): June 2024 [Nationally Accredited Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v13i1.50294

Abstract

Textile liquid waste is pollution resulted from textile industry activities that often produce hazardous and toxic materials. Therefore, appropriate processing techniques are needed. There are many processing methods that can be used in treating this textile liquid waste, one of which is using membrane technology with phase inversion techniques. Membrane technology has advantages over other processing methods such as, being biopolymeric, relatively lower energy consumption, does not use chemicals in the processing process, and does not cause new waste in the processing process.  In this study, 3 variations of cellulose acetate propionate (CAP) concentration were carried out in the manufacture of membranes including, 13% CAP; 14% CAP; and 15% CAP. Membranes that have been made are then carried out several analyses, namely porosity analysis; flux analysis; rejection analysis; and color concentration reduction analysis. The results in this study found that the highest porosity value, rejection value and flux value were found in the CAP membrane with a concentration of 13%.  The CAP membrane has the best rejection value on reducing the remazol concentration of 43% with a membrane of 13% CAP.
Combustion Quality Analysis of Bio-Briquettes from Mixture of Coconut Shell Waste and Coal with Tapioca Flour Adhesive Hakika, Dhias Cahya; Jamilatun, Siti; Zahira, Shafa; Setyarini , Riska; Rahayu, Aster; Sri Ardiansyah, Remmo
Indonesian Journal of Chemical Engineering Vol. 1 No. 1 (2023)
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.
Heavy Metal Phytoremediation: Plant Hyperaccumulators and Clean Strategies for the Environment Nurmustaqimah; Jamilatun, Siti; Rahayu, Aster; Hakika, Dhias Cahya; Muthadin , Akhmad Sabilal; Taufiqurahman , Muhamad Akmal
Indonesian Journal of Chemical Engineering Vol. 2 No. 1 (2024)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v2i1.672

Abstract

Increasing urbanization and industrialization have led to serious heavy metal pollution problems, detrimental to the environment and human health. Phytoremediation, which utilizes hyperaccumulator plants such as Indian mustard and water hyacinth, presents an efficient and sustainable alternative. Despite having the advantages of low cost and utilization of renewable natural resources, phytoremediation also carries risks, such as contamination of consumable plant parts and limited efficiency. Therefore, selecting the right hyperaccumulator plants and having an in-depth understanding of phytoremediation mechanisms are the keys to increasing their success. Phytoremediation mechanisms, such as phytoextraction, hemofiltration, and phytostabilization, can be implemented by considering environmental conditions and contaminants. Factors such as the nature of the medium, root zone, and environmental conditions play a crucial role in determining the effectiveness of phytoremediation. Although challenges still exist, phytoremediation remains a promising approach to treating heavy metal pollution in an economical and environmentally friendly manner.
Pelatihan Pemanfaatan Sampah Buah Menjadi Pupuk Cair Organik bagi Ibu-ibu PKK Kalurahan Murtigading Sanden Bantul Salamah, Siti; Hakika, Dhias Cahya; Sulistiawati, Endah; Amelia, Shinta; Rahmadewi, Yunda Maymana
Indonesia Berdaya Vol 3, No 3: May-July 2022
Publisher : UKInstitute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47679/ib.2022286

Abstract

Consumption of fruit is highly recommended to keep the body healthy. In line with increasing public awareness of fruit consumption, the amount of fruit waste also increases. One way to reusing fruit waste is to convert it into liquid organic fertilizer (LOF). A group of female senior citizen (PKK) from  Murtigading Village, Sanden, Bantul participated a workshop on making LOF reactors in the form of stacked buckets as an effort to convert fruit waste into plant fertilizer. LOF is made from fruit waste that is put into a stacked bucket reactor. The entire process takes two months to produce leachate, which is then aerated for one month before being used. The participants were pleased about the workshop and learned about the benefits of LOF 80% and how to make LOF 84%. 
Recalcitrant Industrial Wastewater Treatment Using Fenton and Photo-Fenton Oxidation: A Comparison Study Wijayanti, Karima Anggita; Hakika, Dhias Cahya; Setyawan, Martomo; Suhendra; Amal, Ikhlasul; Biddinika, Muhammad Kunta
Indonesian Journal of Environmental Management and Sustainability Vol. 8 No. 3 (2024): September
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.2024.8.3.100-109

Abstract

The growth rate in agro-industrial sectors has both positive and negative effects on technological, social, and economic development. Agro-industry production generates substantial volumes of wastewater, primarily from the aqueous discharges of its manufacturing processes. Some of this wastewater contains harmful pollutants that endanger human life, health, and the sustainability of the environment and ecosystem. For example, wastewater from the bioethanol industry contains high concentrations of organic pollutants and recalcitrant compounds, with COD and BOD values exceeding 50,000 mg/L and 30,000 mg/L, respectively. The Fenton process is an oxidation method that generates hydroxyl radicals through the reaction between H2O2 and Fe2+ ions. These hydroxyl radicals are highly effective at breaking down recalcitrant compounds. In this study, a comparative analysis of recalcitrant wastewater treatment using Fenton and photo-Fenton oxidation processes was conducted. The effects of dilution factors, or initial concentrations of recalcitrant wastewater (1:25, 1:50, and 1:75), were examined. Higher dilution ratios enhanced the degradation of COD and BOD levels in wastewater, with the optimal dilution factor for both processes being 1:75. Under optimal conditions, the removal efficiencies for COD, BOD, potassium, and phenol were in the range of 72.29-99.99%. The photo-Fenton process demonstrated higher removal efficiency compared to the Fenton process. The conclusion from this study suggests that the photo-Fenton process could be successfully employed as an advanced treatment method for effectively breaking down recalcitrant wastewater. These findings could be useful for adapting these processes to field-scale applications.
CHARACTERISTICS OF BAGASSE BIOCHAR IN INDUSTRIAL SCALE PRODUCTION Kuncara, Jaka; Setyawan, Martomo; Hakika, Dhias Cahya
Prosiding Seminar Nasional dan Call Paper STIE Widya Wiwaha Vol 3 No 1 (2024): International Seminar Proceedings and Call for Paper STIE Widya Wiwaha
Publisher : Sekolah Tinggi Ilmu Ekonomi Widya Wiwaha

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

Abstract

Bagasse is a waste that can still be processed into more useful materials, in this case it will be processed into biochar. The bagasse used is sugarcane milling waste from a sugar factory in Majalengka, Cirebon, West Java. The pyrolysis process is carried out at the biochar factory of PT XXX which is also located in the area. Making biochar with an industrial-scale pyrolysis reactor namely the rotary carbonization furnace reactor. The main components are a bagasse feeder system, rotary drum dryer, pyrolysis reactor, fan and condenser. The system operates in line from the feeder to the biochar output. The purpose of this research is to investigate the pyrolysis of bagasse in a rotary horizontal carbonization furnace reactor to study the effect of pyrolysis process parameters in the form of temperature and residence time on the product characteristics of biochar. The tests provided results that the residence time has an effect on the proximate and ultimate analysis of biochar. The results showed that with increasing residence time, the volatile meter, hydrogen and oxygen decreased while the ash content, fixed carbon, carbon and gross calories increased. The test also provides results that temperature affects the proximate and ultimate analysis of biochar. The results show that as the pyrolysis temperature increases, the parameters of ash content, fixed carbon and gross calory increase while the parameters of volatile metter, hydrogen and oxygen decrease. The morphological structure of biochar changes with increasing pyrolysis temperature and the results showed that the higher the pyrolysis temperature, the larger the diameter of the biochar pores.
Treatment of Textile Industrial Wastewater using Membrane Technology: A Review Amillia, Amillia; Maryudi, Maryudi; Chusna, Firda Mahira Alfiata; Hakika, Dhias Cahya; Rahayu, Aster; Santosa, Imam; Mohammed, Hamad Khudhair
CHEESA: Chemical Engineering Research Articles Vol. 7 No. 2 (2024): In Progress
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%.
Co-Authors Agus Aktawan, Agus Amelia, Shinta Amilia Amilia, Amilia Amillia, Amillia Areeprasert, Chinnathan Asih, Hayati Mukti Caraka Putra Bhakti Chusna, Firda Mahira Alfiata Dwiyono, Linggar Rahmat Endah Sulistiawati Evitasari, Rachma Tia Hakim, Agus Rahman Huda, Muhammad Farkhan Fikri Ikhlasul Amal Imam Santosa Joko Pitoyo Karuana, Abi Nazli Kuncara, Jaka Martomo Setyawan Maryudi Maryudi Mazareta, Selva Mohammed, Hamad Khudhair Muhammad Kunta Biddinika Mustopa Muthadin , Akhmad Sabilal Nirmalasari, Jiran Nurmustaqimah Rahayu, Aster Rahmadewi, Yunda Maymana Robi’in, Bambang Sabila, Liya Yusrina Safitri, Anggi Sari, Hutri Puspita Setyarini , Riska Siti Jamilatun Siti Salamah Sri Ardiansyah, Remmo Subrata, Arsyad Cahya Sudarmini Sudarmini, Sudarmini Sugianti, Ardina Fitri Suhendra Suradi, Siti Samahani Taufiqurahman , Muhamad Akmal Wijayanti, Karima Anggita Yuwantina, Anissa Zahira, Shafa Zahrul Mufrodi, Zahrul