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All Journal Jurnal Rekayasa Proses Reaktor Research Report - Engineering Science Jurnal Pendidikan Indonesia Jurnal Bahan Alam Terbarukan Seminar Nasional Teknik Kimia Kejuangan Jurnal Rekayasa Proses Jurnal Teknik Kimia Indonesia Journal of Multidisciplinary Applied Natural Science Asia Pacific Journal of Management and Education INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Jurnal Rekayasa Proses
Susiana Prasetyo S
Jurusan Teknik Kimia, Fakultas Teknologi Industri Universitas Katolik Parahyangan, Bandung
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Pemanfaatan ekstrak protein dari kacang-kacangan sebagai koagulan alami: review Hans Kristianto; Susiana Prasetyo; Asaf Kleopas Sugih
Jurnal Rekayasa Proses Vol 13 No 2 (2019): Volume 13, Number 2, 2019
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.46292

Abstract

Coagulation and flocculation are commonly used in water and wastewater treatment. Inorganic coagulant such as alum (Al2(SO4)3), ferrous sulphate (FeSO4), and polyaluminium chloride (PAC) are commonly used. These coagulants are known for its effectiveness and simple operation procedure. However, there are some drawbacks such as reduction in pH, potential negative health effect when the treated water is consumed, and large sludge volume. To overcome these problems, utilization of natural coagulants has been proposed. Based on its active coagulating agent, natural coagulant could be divided as polyphenolic, polysaccharides, and protein. Protein from beans and seeds is commonly used as the source of active coagulating agent, due to its effectiveness, availability, and relatively simple pretreatment is needed. Usually the protein is extracted by using 0.5-1 M NaCl solution as globulin is the major protein fraction in beans.The extracted protein could act as cationic polymer to neutralize negatively charged colloids through adsorption-charge neutralization mechanism. Extracted protein could work effectively to treat turbid and waste water with lower cost compared to alum. However, most of existing studies are still focused on small – pilot scale utilization thus further explorations are still needed.
Potensi polisakarida dari limbah buah-buahan sebagai koagulan alami dalam pengolahan air dan limbah cair: Review Hans Kristianto; Angelica Jennifer; Asaf Kleopas Sugih; Susiana Prasetyo
Jurnal Rekayasa Proses Vol 14 No 2 (2020): Volume 14, Number 2, 2020
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.57798

Abstract

Nowadays, various studies related to utilization of biobased materials as natural coagulants have been explored. Based on the source, natural coagulants can be classified as animal, vegetable, or microbial based. Furthermore, based on the active ingredients, it can be classified as protein, polyphenols, and polysaccharides. Polysaccharides are abundant natural ingredients and are often found in plants or animals. In this study, we focused on polysaccharides, especially those from fruit waste, such as seeds and fruit peels. It is known that around 25-30% of the total weight of fruit is generally wasted, even though it contains phytochemicals and various active ingredients that can be utilized, especially as a natural coagulant. This review will focus on the use of pectin and starch from fruit waste as natural coagulants for water- wastewater treatment. Generally, pectin is commonly found in the skin of fruits as part of the cell wall structure, while starch is found in fruit seeds as food reserves. To be used as a natural coagulant, pectin or starch need to be extracted first. In particular, starch needs to be modified either physically or chemically. The coagulation mechanism of pectin and starch usually follows the interparticle bridging mechanism. The use of pectin and starch from fruit waste needs to be explored and further investigated, to substitute the use of chemical coagulants.
Design of Student and Course Learning Outcomes Measurement Kristianto, Hans; Prasetyo, Susiana; Susanti, Ratna Frida; Adithia, Mariskha Tri
Jurnal Pendidikan Indonesia Vol 10 No 1 (2021)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (369.27 KB) | DOI: 10.23887/jpi-undiksha.v10i1.29061

Abstract

Measurement of the outcomes becomes a vital part in OBE system to ensure the attainment of each outcome. In Indonesia, OBE was adopted in 2015 for higher education level. However, the changes were not accompanied with clear method to measure the outcomes, which became the urgency of this research. In this study, a preliminary method to measure student learning outcomes (SLO) and course learning outcomes (CLO) was presented. The measurement of SLO and CLO attainment was started by SLO mapping to courses, which usually had been done at curriculum design. Based on the mapping, formulation of CLO with a set of direct assessment was planned at the start of each course. After the teaching learning activities, a series of calculation was designed to obtain the attainment of SLO and CLO for each student, course, and whole study program. In the same time the final mark for GPA calculation of each student could also be obtained. The designed method could play an essential part in teaching-learning quality assurance and curriculum continuous improvement, which is aligned with both international and national accreditation criteria and standards. Furthermore, this study could provide insight for other study program in SLO and CLO attainment measurement.
COMBINATION OF FeCl3 AND Fe3O4 AS A MAGNETIC COAGULANT FOR CONGO RED REMOVAL Sugih, Asaf K; Deiza, Muhammad A; Nurmawan, Safri F; Prasetyo, Susiana; Tan, Daniel; Kristianto, Hans
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 8, NUMBER 1, APRIL 2025
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v8i1.22575

Abstract

Water pollution remains a critical environmental issue, necessitating efficient treatment technologies, among which, coagulation is still widely applied due to its effectiveness in removing colloidal particles and organic pollutants. Inorganic coagulants remain a preferred coagulant despite drawbacks such as excessive sludge formation and long settling times. To address these limitations, the integration of magnetic nanoparticles to form magnetic coagulants has emerged as a promising strategy. Aims: This study was aimed to investigate the effectiveness of the FeCl3 - magnetite (Fe3O4) combination as a magnetic coagulant for the removal of Congo red from synthetic wastewater. Methodology and results: The influence of key parameters, including pH (3-8), coagulant dose (4-44 mL/L), magnetite dose (0-200 mg/L), and initial dye concentration (50-100 mg/L), was systematically evaluated. Coagulation experiment was done by using a standard jar test apparatus.              The settling kinetic was evaluated by using pseudo-first and second-order kinetic model. Conclusion, significance and impact study: It was found that pH 6, coagulant dose of 20 mL/L FeCl3 0.5 M, and magnetite dose of 150 mg/L gave the best coagulation efficiency with 95% removal of 50 mg/L Congo red wastewater. Furthermore, the settling kinetics showed a good suitability with non-linear pseudo-second order-model kinetics. Results demonstrated that FeCl3-Fe3O4 as a magnetic coagulant significantly improved floc formation, settling efficiency, and overall pollutant removal.
Alginate as A Natural Coagulant-Aid: Advances, Challenges, and Applications Kristianto, Hans; Prasetyo, Susiana; Sugih, Asaf Kleopas
Journal of Multidisciplinary Applied Natural Science Articles in Press
Publisher : Pandawa Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47352/jmans.2774-3047.287

Abstract

Coagulation is a critical step in water and wastewater treatments that is essential for the removal of suspended solids, organic matters, and colloidal particles. Conventional metal-based coagulants such as aluminium sulphate, ferric chloride, and polyaluminium chloride and synthetic polymer such as polyacrylamide are widely used due to their proven efficiency. However, concerns over their environmental impact, including the generation of non-biodegradable sludge, potential health risks, and negative impact on the water ecosystem, have driven the search for alternative, eco-friendly coagulants. Natural coagulants derived from plants, animals, or microorganisms have emerged as promising alternatives, offering advantages like biodegradability, non-toxicity, and lower sludge production. Among these, polysaccharide-based coagulants such as alginate, a biopolymer sourced from brown seaweed and bacteria, have gained significant attention. Alginate's biodegradability, non-toxicity, low cost, and versatile gelation properties make it a potential substitute for synthetic coagulants. This review focuses on the use of alginate as a coagulant-aid, providing an overview of its sources, characteristics, coagulation mechanisms, and variables that affect the coagulation performance. The review also highlights the benefits, challenges, and future research directions for improving the efficiency and scalability of alginate in sustainable water/wastewater treatment processes.
Manure Waste Management to Produce and Utilize Biogas Efficiently and Effectively in a Smart Eco-Social Village in Bandung Tan-Soetedjo, Jenny Novianti Muliarahayu; Ramadhany, Putri; Prasetyo, Susiana
Asia Pacific Journal of Management and Education (APJME) Vol 5, No 3 (2022): November 2022
Publisher : AIBPM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32535/apjme.v5i3.1907

Abstract

The river is one of the primary sources of fresh water. It serves purposes for irrigation systems in agriculture, fulfilling domestic needs (water drinking, washing), transportation medium, energy production, and leisure. In West Bandung, the Cikapundung River becomes the source of life to sustain the population. More than 50% of the population upstream Cikapundung lives as agriculture and dairy farmers. Unfortunately, due to those activities, the river condition is considered unhealthy. Agriculture and dairy farmers discharge their wastes into the river instead of employing them for biogas, despite biogas's role in ensuring farming sustainability. Thus, Chemical Engineering Department and Student Society (HMPSTK) of Parahyangan Catholic University (UNPAR) constructed a system involving biodigester to produce biogas from agricultural waste (cow manure and organic waste) as a prototype solution for this issue. The community service program was divided into seven stages: a) Problem identification, b) Location survey and advocacy, c) Sample collection, d) Research, e) Construction of a biogas digester, f) Socialization with the local community, and g) Follow-up of the outcomes. In fact, a 5,000 Liter of fiberglass bio-digester was successfully installed in Cibodas Village, Maribaya, Lembang, with the help of PRIMARY (Program Biogas Rumah), a local biogas contractor. The mixture of livestock manures and organic waste of a 3:1 ratio produced the largest biogas volume. Biogas generated from biodigester was applied for cooking and lighting kerosene lamps. The result showed that no leakage was observed until 3-years of installation of the biodigester. However, it is suggested that a continuous and solid system involving multiple ways of manure processing such as the biogas and vermicompost production as well as the biogas utilization should be designed to encourage not only a eco-friendly solution but also to initiate a circular economy model in the community. Thus, it will be a sustainable solution not only for overcoming the largest issue of Cikapundung Rivers's organic waste disposal but also for the other agriculture and farming in Indonesia.
Co-Authors A Prima K A Prima Prima Anastasia Prima Kristijarti Andranyssa V M Rumondor Angelica Jennifer Asaf K Sugih Asaf Kleopas Sugih Deiza, Muhammad A Felicia M K Haryanto Felicia Yosephine Felicia Yosephine Henny Sunjaya Hudaya, Tedi Kristianto, Hans Loanda, Jordi Mariskha Tri Adithia, Mariskha Tri Nurmawan, Safri F Olivia Juliani Ramadhany, Putri Ratna Frida Susanti Soetedjo, Jenny Novianti M Tan, Daniel V Vincentius Yohanes Yanuar