Teguh Ariyanto

• Dr.-Ing.
• Professor (Associate) at Universitas Gadjah Mada

The utilization of carbide-derived carbons (CDCs) in a wide range of applications is obstructed due to relatively high production costs. In this study a possibility to reduce the costs of CDC synthesis by employing low quality SiC byproducts stemming from the ESK process is presented. While the crystallinity and impurity content differs for the dif...

High-power supercapacitors require excellent electrolyte mobility within the pore network and high electrical conductivity for maximum capacitance and efficiency. Achieving high power typically requires sacrificing energy densities, as the latter demands a high specific surface area and narrow porosity that impedes ion transport. We present a novel...

Nanoporous carbon materials, a unique and useful material, have been widely used in many technologies such as separation processes, catalysis, energy storage, gas storage, energy conversion, etc. due to its high specific surface area and tunable porosity. In this research, nanoporous carbons were prepared using simple and innovative approach based...

Rice bran oil has been known as a food product that has highly nutritious and contained several compounds that are very important for health. In this research, limonene was used as an edible and environmentally friendly solvent to substitute conventional solvent such as n-hexane, ethanol or diethyl ether for extraction of rice bran oil (RBO). The e...

Iodine-131 (131I), a widely used radionuclide for thyroid cancer therapy, can present in a liquid waste that poses significant environmental risks if not properly managed. This study aims to develop carbon/silver (C/Ag) nanocomposites optimized for the adsorption and immobilization of 131I in urine waste from post-thyroid cancer therapy patients. T...

OPEFB is a cellulose-rich biomass waste from the palm oil industry that can be further utilized as nanocrystalline cellulose (CNC). One of the methods used for the isolation of crystalline cellulose is acid hydrolysis. Improper hydrolysis process conditions will cause low crystalline yield, crystallinity index, and unsuitable CNC characteristics. T...

Specific and accurate diagnostic tools are important to determine diagnosis for various lung diseases with complex characteristics. In this study, high-energy milling (HEM) was utilized to prepare micro-sized carbon from palm kernel shell charcoal as a potential aerosol agent for lung ventilation scintigraphy. The HEM parameters investigated in thi...

Investigation of NaI adsorption on Porous Silica Nanoparticles (PSN-blank) and functionalized PSN (PSN-NH2) was conducted to study the possibility of PSN radiolabeling using adsorption techniques. This research aims to study the radiolabeling of ¹³¹I compounds with porous material nanoparticles using the adsorption method. The study began with the...

This study aims to evaluate the feasibility of an innovative reusable adsorbent through adsorption-degradation sequence for antibiotic removal from water. The magnetite/mesoporous carbon adsorbent was prepared using a two-step method of (i) in situ impregnation of magnetite precursor during resorcinol formaldehyde polymerization and (ii) pyrolysis...

This study examined roles of iron oxide/porous carbon material (Fe/C) for removing metronidazole in simulated wastewater by adsorption and then followed by a degradation using advanced oxidation process (H2O2, O3 and combination of H2O2/O3). Fe/C was produced by an impregnation of iron oxide precursors during resorcinol-formaldehyde synthesis follo...

It is necessary to separate CO2 from biogas to improve its quality for the production of biomethane. Herein, an improvement in the separation of CO2/CH4via adsorption was achieved by modifying the surface of CMS. The surface modification of CMS was performed by impregnation with metal oxide (Fe3O4) and N-doping (DES-[ChCl:Gly]). Subsequently, the e...

This paper attempts to evaluate the use of composite of polyaniline (PANI)/palm kernel shell-derived porous carbon (C-PKS) as alternative materials for supercapacitor electrodes. The preparation of PANI/C-PKS composites was carried out using an in-situ polymerization method. After the composite was formed, the structures and morphologies were chara...

This paper presents one-step ciprofloxacin degradation via photocatalysis using TiO2@PANI. A TiO2@PANI material was produced via in situ polymerization through aniline monomer attachment into the surface of anatase nano TiO2. Pyrolysis was conducted to enhance pore properties. The properties of the TiO2@PANI material were characterized using N2 sor...

The success rate of matrix acidizing in hydraulic fractured sandstone formation is less than 55%, much lower compared to the more than 91% success rate in carbonate formation. The need for alternative approaches to help the success ratio in matrix acidizing is crucial. This paper demonstrates a modeling technique to improve the success ratio of mat...

Epoxy resin as a polymer material with good mechanical and electrical characteristics and resistance from corrosion and moisture resistance are considered to have the potential to be applied in defense field. The research aimed to investigate the kinetics of the reaction between bisphenol A diglycidyl ether (DGEBA) and terephthalic acid (TPA). The...

PT Indocement Tunggal Prakarsa Tbk (PT ITP) Unit Palimanan has performed efforts to reduce, reuse, recycle, and recovery (4R) of cement bags as an attempt to utilize resources in efficient manners. In this study, the 4R program was evaluated to gain information on the impacts of the program in social, economic and environmental benefit as a part of...

Ibuprofen is a nonsteroidal anti-inflammatory drug classified as one of the emerging contaminants from the pharmaceuticals group. Ibuprofen detected in the environment indicates that wastewater treatment facilities have a limited ability to remove this substance. Residual ibuprofen that accumulates continuously can harm ecosystems in the waters and...

Sea Water Reverse Osmosis (SWRO) reject water produced by PT Cirebon Electric Power has not been optimally utilized. In this research, a study of the characteristics of SWRO reject water was carried out to determine important properties such as turbidity, conductivity, pH and salinity. This characteristic is important as a basis for consideration o...

Porous carbon from biomass has a great potential to be developed. Biomass as a resource is renewable, abundantly available, and cheap. One application of porous carbon is as an electrode material of supercapacitor due to its advantageous pore properties such as high specific surface area and pore volume. This research prepared porous carbon materia...

There are challenges related to cancer treatment, namely, targeting and biocompatibility associated with a drug vehicle. This research aims to prepare a theranostic cancer vehicle based on porous silica nanoparticles (PSN) with controllable nanoparticle size, supporting targeting properties, and biocompatible. The synthesis method combined the Stöb...

This paper presents a novel approach to remove ciprofloxacin from an aqueous solution using Fe3O4/C material by adsorption and then followed by a degradation process using several advanced oxidation technologies, i.e., heterogeneous Fenton and catalytic ozonation. Porous carbon material was synthesized through several stages, i.e., polymerization o...

Porous carbon plays important role in the application of energy storage materials e.g. supercapacitors. Along with the importance to find a perfect carbon precursor, lignin from biomass depicts its advantages as a carbon source. However, wood-based lignin-derived carbon typically displayed a low capacitance due to small pore size and purely capacit...

In this study, magnesium oxide (MgO) confined in porous carbon was synthesized and the efficacy of this material was analyzed for hydrogen sulfide removal. The palm kernel shell was carbonated to obtain the porous carbon material (labelled as AC-TKS). The confinement of magnesium oxide was carried out by the incipient wetness impregnation process o...

This study explores the modification of lignin with surfactants, which can be used as a template to make mesoporous structures, and can also be used in combination with manganese oxide to produce manganese oxide/lignin-derived carbon. Organosolv extraction, using ethanol (70%) at 150 °C, was carried out to extract lignin from oil palm wood. Lignin...

The separation of CO2/CH4 can be enhanced by impregnating porous carbon with iron oxide. Dispersion of iron oxide is one of the critical factors which supports the separation process performance. Iron oxide dispersion can be enhanced by enriching the oxygen functional groups on the carbon surface. This study investigates three distinct oxidation pr...

The separation of CO2/CH4 using porous carbon can be increased by the presence of a functional group of nitrogen on the carbon surface. This study explores the potential of porous carbon derived from the palm kernel shell (C-PKS) impregnated with a deep eutectic solvent (DES), which is one of the chemicals containing a nitrogen element. The DES was...

This research aims to investigate the effect of pre-treatment of carbon surface oxidation in the CO2 adsorption. First, porous carbon was oxidized using 10% H2O2 at 30, 50, and 70°C. The porous carbon, which was oxidized or without oxidation, was impregnated using 5% monoethanolamine (MEA). Adsorption of CO2 was carried out with a pressure up to 1...

Nanoporous carbons, due to high specific surface area and high pore accessibility, have been utilized as material electrode supercapacitors. To obtain high power and energy densities, it is necessary to introduce functional groups of the carbon surface. In this research, the effect of gamma irradiation to modify surface chemistry of nanoporous carb...

This study aimed to develop the liquid-liquid equilibrium models to predict neodymium (Nd) and yttrium (Y) distribution in the extraction system. Feed solution (solution of Nd and Y in the 1 M nitric acid media) was mixed with solvent (di-2-ethyl-hexyl-phosphate (D2EHPA) diluted in kerosene) with volume ratio of 1:1 using a mechanical shaker for 25...

Biogas is considered as a promising renewable energy. Therefore, in order to achieve a high quality of energy, biogas upgrading steps at the upstream of its final utilization is required. One of the most important steps is CO2 removal which has a significant impact on improving the biogas properties for energy applications. In this study, separatio...

The goal of this study is to investigate the efficacy of potassium permanganate (KMnO4) confined in porous carbon for hydrogen sulfide removal. As porous support, carbon was prepared by carbonization process of abundantly biomass source of palm kernel shell (named KATKS). The surface of porous carbon was first modified using hydrogen peroxide oxida...

This research was conducted to study changes in functional groups after oxidation of porous carbon synthesized from palm kernel shell and their effects on the performance of material for an electric double-layer capacitor (EDLC). Porous carbon was prepared by pyrolysis of palm kernel shell at a temperature of 800 °C and steam activation. Surface mo...

Methane (CH4) and carbon dioxide (CO2) are the main components of a renewable energy source of biogas. Separation of CO2 from biogas is significantly important to improve biogas performance, due to heating value in biogas depends on the concentration of methane. One of the gas separation technologies that has been widely used in chemical industries...

The presence of antibiotics in wastewater discharged to the waterbody has negative effects. The antibiotics can induce bacteria to be persistent. Hence, efforts to limit the concentration of antibiotics in wastewater are required. In this work, the removal of antibiotics was performed by adsorption using nanoporous carbon in the form of a monolith....

The presence of impurity in biogas like CO2, H2S and H2O reduce the efficiency and heating value of this renewable energy. While removal of H2S and H2O is relatively simple, effective purification is needed to remove CO2 which presence in biogas up to 45%. The separation of CO2 from CO2/CH4 mixture can be performed by carbon-based molecular sieves....

Porous carbon has been widely used for many applications e.g., adsorbents, catalysts, catalyst supports, energy storage and gas storage due to its outstanding properties. In this paper, characteristics of porous carbon prepared by carbonization of lignin from various biomasses are presented. Various biomasses, i.e., mangosteen peel, corncob and coc...

Umiyati R, Millati R, Ariyanto T, Hidayah C. 2020. Calophyllum inophyllum extracts as a natural enhancer for improving physical properties of bioplastics and antimicrobial activity. Biodiversitas 21: 3294-3302. The utilization of Calophyllum inophyllum (or nyamplung) cake (NC) is still limited, only as fertilizer and animal feed. This research aime...

Clay is an abundant material that is widely used as an adsorbent in pristine or pillared form. Pillared clays feature better properties, e.g. higher specific surface area, thus they can adsorb a higher quantity of adsorbates compared to pristine material. In this work, a preparation of pillared clay using Indonesian natural bentonite and its potent...

Alkylbenzene sulfonates (ABS) is used widely in many industrial and commercial products as surfactants. However, their appearance could cause side effects when released to the environment without treatment. Adsorption method using porous carbon is one of the effective methods to reduce its presence in nature. The aim of this research is to investig...

During the production, palm oil industry generated around 4 ton of dry biomass waste such empty fruit bunch (EFB), palm kernel shell (PKS), and palm oil fiber (PF) for each 1 ton of palm oil extracted. As main industry in Indonesia, palm oil industry offered not only the oil product but also biomass waste which was potential for clean energy source...

Biogas is typically composed of 55% methane, 45% carbon dioxide, and small amount of impurities. For high quality of fuel, it is necessary to increase percentage of methane by removing carbon dioxide. This can be performed by molecular sieve utilizing different diffusivity of methane and carbon dioxide passing through pores. This work presents a st...

Gemah ripah biogas (GRB) plant is the first biogas project in Indonesia that utilizes a 100% fruit waste as a feedstock. Now, the biogas has been operating for almost 9 years. To get objective performance study in the biogas plant existing, it important to analyze biogas production, electricity generation and energy and environmental benefits of th...

Several feedstocks for anaerobic digestion (AD) have challenges that hamper the success of AD with their low accessible surface area, biomass recalcitrance, and the presence of natural inhibitors. This paper presents different types of pretreatment to address those individual challenges and how they contribute to facilitate AD. Organosolv and ionic...

The increase of biodiesel production would cause an increase of glycerol as by-products. In the present study, utilization of glycerol by-products to form solketal using Indion 225 Na as a catalyst was investigated. The intrinsic kinetic data were taken in a batch reaction. The results showed that the temperatures and catalyst concentration have a...

A direct release of dye wastewater to a water environment without pre-treatment could cause negative impacts. To solve them, an effective method for degrading wastewater contaminants is needed. In this research, the Fenton reaction using Fe3O4 catalyst for removal of wastewater contaminants taken from a traditional fabrics industry was studied. For...

Wastewater discharged by urea manufacture usually contains urea in a high concentration. As the predominant constituent, concentration of urea in the wastewater is in the range of 2000-4000 ppm. In this high level discharge, urea disposal to environment may lead to eutrophication in aquatic ecosystem and decrease dissolved oxygen needed by aquatic...

Program Studi Program Profesi Insinyur Fakultas Teknik Universitas Gadjah Mada (PSPPI FT UGM) telah mengembangkan sistem konversi dan sistem penilaian untuk program Rekognisi Pembelajaran Lampau (RPL) yang mengacu pada bakuan kompetensi Persatuan Insinyur Indonesia (PII). Sistem penilaian RPL (SP RPL) ini telah diimplementasikan dalam proses penila...

This study examined change in pore structure and microstructure of nanoporous carbon after surface oxidation and how it affects the adsorption performance of metronidazole antibiotics. The surface oxidation was performed by hydrogen peroxide at 60 °C. The properties of porous carbon were investigated by N2-sorption analysis (pore structure), scanni...

Climacteric fruits naturally can be over-ripened because of ripening hormone composed of ethylene gas. Removal of ethylene gas by potassium permanganate (KMnO4) has successfully preserved the fruit, but there is still a room for improvement through nano-confinement process. This study was conducted to compare the ethylene oxidation rate and fruit p...

Urea complexation is a fractionating process to separate poly unsaturated fatty acids from vegetable and animal oil, based on the capability of saturated fatty acids (SFAs) to form complexes with urea in the ethanolic solution, which generates a solid–liquid system. This research determined models which are suitable for the fatty acid, urea, and et...

BATAN berencana membangun dan mengoperasikan Reaktor Daya Eksperimental (RDE). RDE dengan tipe reaktor gas temperatur tinggi (HTGR), merupakan salah satu kandidat desain reaktor yang limbah panasnya cocok untuk aplikasi desalinasi air laut. Kopling desalinasi dengan RDE, membuat teknologi desalinasi lebih menarik, karena selain menghemat cadangan b...

Abstrak Urea merupakan sumber nitrogen utama bagi tumbuhan. Pupuk urea konvensional dibuat dengan mereaksikan amonia dan karbon dioksida. Air limbah yang dihasilkan oleh pabrik pupuk urea biasanya mengandung urea dan amonia dalam konsentrasi yang tinggi. Dalam tiap m 3 air limbah kandungan urea dapat mencapai 650-4000 ppm dan amonia sebesar 100-130...

Urea is a primary nitrogen source for plant. Conventional urea fertilizer is made from reaction between ammonia and carbon dioxide. Wastewater of urea manufacture usually contains urea ammonia in a high concentration. They can be as high as 650-4000 ppm urea and 100 – 1300 ppm ammonia/m3 wastewater. High concentrated urea and ammonia disposal to en...

Uranium wastewater treatment has been performed by adsorption method using Mg(OH)2-impregnated activated carbon. Research purposes are to determine (i) uptake capacity of the adsorption isotherm of uranium in Mg(OH)2-impregnated activated carbon, (ii) mathematical correlation of uranium (VI) adsorption rate, and (iii) effect of the impregnation rat...

This study aims to synthesize simvastatin hydrogel as drug delivery system with surfactant addition for improving solubility of simvastatin. Surfactants used in the study were the zwitterionic amino acid of arginine and nonionic surface-active agent of polysorbate 80. The solubility study was conducted by pouring of an excess mass of simvastatin in...

The production of biogas by anaerobic digestion (AD) from fruit waste and then converting biogas to electricity is an innovative approach in the development of renewable energy. To study the sustainability of the process, it important to analysis the environ-socio-economic benefits of the technology. In this study, the life cycle sustainability ass...

Textile industries produce a complex wastewater which is difficult to be treated. In this work, a catalytic degradation of wastewater effluent composed of sulphur black coloring agent discharged by industry was studied. UV lamp power, peroxide concentration, pH, and iron oxide catalyst were varied to determine the best conditions for oxidative trea...

Suppressing the amount of ethylene during storage has been of interest as a method to enhance shelf life of fruit. In this work, ethylene removal by adsorption using cobalt oxide-impregnated nanoporous carbon has been studied. Nanoporous carbon with a high surface area up to 2400 m² g⁻¹ was prepared by carbonization process biomass and synthetic po...

Hydrogen storages play an important part in hydrogen energy scenarios. Several methods have been investigated to store hydrogen effectively and adsorptive approach is one of the best methods proposed. Porous carbon is among adsorbent materials that have the potential to be used. Unfortunately, on its own, carbon showed a low hydrogen storage capaci...

Porous carbon has been widely utilized as adsorbent, catalysts, and electrode of electronic devices. One of raw materials that could be potentially for production porous carbon is lignin stemmed from biomass. The objective of this research is to study the characteristics of porous carbon produced by pyrolysis of lignin. The lignin was prepared by e...

Implementation of integrated waste management is an important factor to support target of Universitas Gadjah Mada (UGM) to be an educopolis campus. Therefore, study of waste generation and characterization are needed as basis data for selecting technology, designing the waste treatment capacity, and appropriate strategies approach. Valid data also...

Carbon materials for electrical energy devices, such as battery electrodes or fuel-cell catalysts, require the combination of the contradicting properties of graphitic microstructure and porosity. The usage of graphitization catalysts during the synthesis of carbide-derived carbon materials results in materials that combine the required properties,...

Methylene blue is one of the dyes in textile industries which has a negative impact on the environment. This compound is very stable, so it is difficult to degrade naturally. Methylene blue can be harmful to the environment if it is in a very large concentration, because it can increase the value of Chemical Oxygen Demand (COD) which can damage the...

The aim of this work is to evaluate the influence of the pore structure of Fe-supported carbon catalysts in heterogeneous Fenton oxidation. For such goal, two types of porous carbons i.e. biomass-derived carbon (BDC) and polymer-derived carbon (PDC) were employed as catalytic supports. Both solids present the same specific surface area (ca. 1300m²/...

Four groups of waste generated from the agricultural, forest, municipal, and industrial sectors are discussed. Corncob, oil palm empty fruit bunch (OPEFB), rice husk, rice straw, sugarcane bagasse, and wheat straw were selected to represent solid wastes from the agricultural sector. The production of corncob, OPEFB, rice husk, rice straw, and sugar...

Nyamplung (Calophyllum inophyllum) cake as a by-product of nyamplung oil production is still limited. This research aimed to evaluate characteristics of antimicrobial bio-plastic made from hydroxypropyl starch as a basic ingredient and Nyamplung cake extract as additive. Nyamplung cake extract addition affected bio-plastic mechanical property by re...

A B S T R A C TProducing biogas by anaerobic digestion (AD) is a promising process that can simultaneously provide renewable energy and dispose solid waste safely. However, this process could affect environment e.g. due to greenhouse gas emissions. By life cycle assessment (LCA), we assessed the environmental impact (EI) of an integrated fruit wast...

Adsorption using porous carbon is an effective method to remove dyes from wastewater. The performance of the adsorbent depends on the pore structures; hence, selecting an optimal structural parameter for removal of a specific dye is required. This work studies the effect of pore structures on the methylene blue adsorption. Porous carbons featuring...

Ethylene is naturally generated by climacteric fruits and can promote the ripening process faster. For effective long-distance transport and subsequent storage, removing ethylene from the storage environment has been of interest to suppress its undesirable effect. In this study, ethylene removal by an adsorptive method using cobalt-loaded nanoporou...

Electrodialysis is a separation process which ions are transported through semi permeable membranes under an influence of electric potential. In this research, electrodialysis using monovalent ion exchange membranes was applied to separate lithium ions from mixtures of lithium-cobalt aqueous solution. The study aims to examine factors that affect t...

Hollow carbon materials have received intensive attention for energy storage/conversion applications due to their attractive properties of high conductivity, high surface area, large void and short diffusion pathway. In this work, a novel hollow mesoporous material based on carbide-derived carbon (CDC) is presented. CDC is a new class of carbon mat...

Simvastatin is a lipid lowering agent which has been used recently as drug delivery system for stimulating bone regeneration. Because of low therapeutic efficacy and bioavailability, it is necessary to deliver simvastatin by local administration e.g. by hydrogel system. However, simvastatin has very poor solubility which restricts to prepare hydrog...

Fruit waste is a part of municipal solid waste which is typically disposed of directly to a landfill site. In order to utilize this valuable renewable resource, anaerobic biological processes can be employed to convert fruit waste to biogas. This usable gas is then used to generate electricity. This paper describes a comprehensive study to set up t...

Due to its specific micropore structure, carbon molecular sieve (CMS) can provide more selective properties than conventional activated carbon in adsorbing molecule from a gaseous mixture. In this research, preparation of CMS for CO2/CH4 separation has been developed by pyrolysis of specially synthesized polymeric resins as the precursor. This rese...

New hollow core particles of mesoporous/graphitic carbon were successfully prepared from carbon core-shell particles, through selective removal of the core. Electrocatalysts prepared by dispersing platinum on these hollow core materials showed remarkably high dispersion. The combination of high dispersion with short pore diffusion length allowed to...

Core-shell porous carbon represents an innovative concept for optimizing performances of carbon materials in a wide range application. Here, a novel route to produce carbons with spatially varying pore and microstructure is presented. Following the carbide-derived carbon method, a adjustable shell generation is achieved through mixing a limited amo...

Hierarchical pore structures combine different functionalities which are important for application performances in catalysis, electrochemical energy storages, gas storages, separations, etc. In this work, synthesis procedures are presented which allow to control the carbon pore and microstructure spatially and thus to obtain core-shell materials. T...

A novel, two step synthesis is presented combining the formation of carbide-derived carbon (CDC) and redox-active vanadium pentoxide (V2O5) in a core-shell manner using solely vanadium carbide (VC) as the precursor. In a first step, the outer part of VC particles is transformed to nanoporous CDC owing to the in situ formation of chlorine gas from N...

Nanoporous carbons, due to high specific surface area, high pore accessibility, and relatively low cost, have been used as material electrode supercapacitors. In this work, the influence of pore structure of nanoporous carbons on the specific capacitance of supercapacitors was examined. Nanoporous carbons with several types of pore structure were p...

Nanoporous carbon has been widely used as electrode material supercapacitor due to high specific surface area, high pore accessibility, and relatively low cost. In this research, nanoporous carbons were prepared by carbonization of phenol-formaldehyde (PF), resorcinol-formaldehyde (RF), and resorcinol-phenol-formaldehyde (RPF) polymer without any a...

The main constraint in utilizing of methane gas as a fuel is the method of storing it due to its inherent nature as a supercritical gas. Methane gas is conventionally stored by either liquefying and containing the gas in refrigerated system at atmospheric pressure, or compressing it in a high-pressure vessel at room temperature. In fact, both gas s...