Ilman Nuran Zaini

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Verified

Ilman verified their affiliation via an institutional email.

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• PhD
• Assistant Professor at Bandung Institute of Technology

The transition to low-carbon steel is important for achieving net-zero emissions while opening market opportunities for the Middle East. However, a comprehensive environmental and economic assessment of low-carbon steelmaking in the region that accounts future scenarios has been lacking. This study evaluates two low-carbon pathways for steelmaking:...

Biomass is a key renewable feedstock for producing green fuels; however, renewable feedstock presents a high risk for catalyst deactivation and poor stability. In addition, the heat source of industrial reforming processes comes from fuel combustion and most heat is lost in the flue gas. In this study, a Ni/AlO/FeCrAl-based monolithic catalyst with...

This study introduces a distributed electrified heating approach that is able to innovate chemical engineering involving endothermic reactions. It enables rapid and uniform heating of gaseous reactants, facilitating efficient conversion and high product selectivity at specific equilibrium. Demonstrated in catalyst-free CH4 pyrolysis, this approach...

Feedstock properties play a crucial role in thermal conversion processes, where understanding the influence of these properties on treatment performance is essential for optimizing both feedstock selection and the overall process. In this study, a series of van Krevelen diagrams were generated to illustrate the impact of H/C and O/C ratios of feeds...

The decarbonisation of the Swedish iron and steel industry is crucial in achieving Sweden's target to achieve zero net emissions of greenhouse gases (GHG) by 2045. Direct electrification of industrial furnaces could be an important milestone in decarbonising the iron and steel plants. In this study, pilot-scale trials were performed to investigate...

Catalyst research on reforming processes for syngas production has mainly focused on the active metals and support materials, while the effect of the catalyst’s geometry on the reforming reactions has been poorly studied. The application of 3D-printed materials with enhanced geometries has recently started to be studied in heterogeneous catalysis a...

Bioenergy with carbon capture and storage (CCS) in iron and steel production offers significant potential for CO 2 emission reduction and may even result in carbon-negative steel. With a strong ambition to reach net-zero emissions, some countries, such as Sweden, have recently proposed measures to incentivise bioenergy with CCS (BECCS), which opens...

A novel process to produce a H2-rich syngas from a high moisture-containing agricultural waste digestate is proposed. This process combines the use of hydrothermal carbonization (HTC), dewatering, pyrolysis, and catalytic reforming. Due to the feature of the high moisture content in the digestate, the effect of the HTC and dewatering on the process...

An in-depth knowledge of pyrolytic kinetics is vital for understanding the thermal decomposition process. Numerous experimental studies have investigated the kinetic performance of the pyrolysis of different raw materials. An accurate prediction of pyrolysis kinetics could substantially reduce the efforts of researchers and decrease the cost of exp...

Dedicated bioenergy combined with carbon capture and storage are important elements for the mitigation scenarios to limit the global temperature rise within 1.5 °C. Thus, the productions of carbon-negative fuels and chemicals from biomass is a key for accelerating global decarbonisation. The conversion of biomass into syngas has a crucial role in t...

Bioenergy with carbon capture and storage (BECCS) is one of the prevailing negative carbon emission technologies. Ensuring a hydrogen economy is essential to achieving the carbon-neutral goal. In this regard, the present study contributed by proposing a carbon negative process for producing high purity hydrogen from the organic fraction of municipa...

The use of bioenergy with carbon capture and storage (BECCS) is vital to reaching the desired climate goals. This study proposed a novel process combining anaerobic digestion, pyrolysis, catalytic reforming and methanation (APRM) to produce biomethane and to capture carbon emission from the organic fraction of municipal solid waste (OFMSW). The eva...

Pyrolysis of municipal solid waste (MSW) represents one of the most promising solutions to recycle materials and recover energy. Two of the main components of MSW are waste cardboard and plastic. In this study, the pyrolysis of cardboard and polyethylene (PE) and the co-pyrolysis of their mixtures were conducted to investigate the synergistic effec...

Primary fragmentation during rapid pyrolysis is considered to be the critical size reduction mechanism as it determines the particle size distribution and char conversion rates in the fixed bed gasifier. This study aims to investigate the primary fragmentation behavior of Refuse Derived Fuel (RDF) pellets during a rapid pyrolysis process. RDF pelle...

Hydrogen and biocarbon are important materials for the future fossil-free metallurgical industries in Sweden; thus, it is interesting to investigate the process that can simultaneously produce both. Process simulations of biomass pyrolysis coupled with steam reforming and water-gas-shift to produce H2, biocarbon, and bio-oil are investigated in thi...

Gasification of excavated landfill waste is one of the promising options to improve the added-value chain during remediation of problematic old landfill sites. Steam gasification is considered as a favorable route to convert landfill waste into H2-rich syngas. Co-gasification of such a poor quality landfill waste with biochar or biomass would be be...

The current transition to a circular economy model laid the foundations for the development of the Enhanced Landfill Mining concept. Hitherto, a few studies have been performed on the thermochemical valorisation of excavated waste, of which a majority concern incineration or gasification. Nonetheless, no previous studies on excavated waste pyrolysi...

Gasification has been proposed as a good solution for recovering energy from waste and biomass in the form of syngas. However, the presence of tar limits syngas applications. Tar model molecules have been removed by cold plasmas up to 400 C, but to avoid syngas cooling tar removal above 600 C is required. To investigate tar removal by cold plasma a...

Catalytic tar removal from producer gas is critical for the economic feasibility of Municipal Solid Waste (MSW) gasification in the waste-to-energy(WtE) approach. Nickel- and noble-metal catalysts have the highest tar cracking activities, but they increase costs, use scarce materials, and generate dangerous byproducts. To overcome these drawbacks,...

Gasification is one of the most important methods for converting biomass to syngas currently used in energy production. However, tar content in syngas limits its direct use and thus requires additional removal techniques. The modelling of tar formation, conversion and destruction along a gasifier could give a wider understanding of the process and...

This study proposes a novel system to efficiently produce hydrogen from microalgae, based on supercritical water gasification and syngas chemical looping, and its conversion to methylcyclohexane. The process consists of a gasifier, a syngas chemical looping reactor, and a methylcyclohexane synthesis reactor as the main units. Microalgae are convert...

The focus of this study is the pyrolysis and gasification of Refuse Derived Fuel (RDF) and fine fractions recovered from the excavation of landfill waste, with an emphasize on the characterization of the reactivity and kinetics of the char-steam gasification. The results from the pyrolysis tests demonstrated that CO and CO2 are the main produced ga...

Hydrogen (H2) production and storage technologies are the main challenges in the realization of H2 utilization in which the goal is to achieve high conversion efficiencies and a high storage density. In this study, microalgae gasification and ammonia (NH3) production are proposed to efficiently convert microalgae to NH3 for efficient H2 storage. Th...

Gasification of excavated Municipal Solid Waste (MSW) for energy and materials recovery has been seen as a solution for current energetic, environmental and land availability issues. However, it poses many technological challenges, and among them, the most difficult is to obtain a tar-free syngas. In this work, two sets of experiments were performe...

As the world is transitioning towards a low-carbon economy, it is becoming important to develop ways to reduce carbon dioxide (CO2) emissions. Chemical looping, a low carbon technology for the industry, is considered as a potential breakthrough technology and a viable option for efficient fuel conversion and carbon capture and storage, with the suc...

Mixed plastics and papers are two of the main fractions in municipal solid waste which is a critical environmental issue today. Recovering energy and chemicals from this waste stream by pyrolysis is one of the favorable options to achieve a circular economy. While pyrolysis products from plastics are mainly hydrocarbons, pyrolysis products from pap...

Herein, the supercritical water gasification (SCWG) of microalgae combined with syngas chemical looping (SCL) for H2 production and storage employing liquid organic H2 carrier (LOHC) system have been proposed and analysed in terms of energy efficiency. Microalgae are converted to syngas in the SCWG module and then introduced into the SCL module to...

This study focuses on the use of brine discharged from geothermal fluid at the Wayang Windu geothermal power plant. The Kalina cycle system (KCS) is investigated in an effort to generate electricity from the unused brine. This scheme develops KCS 11 owing to good performance at low to mid-range temperatures. Owing to impurities and the SiO2 content...

The effects of carbon fiber-epoxy interfacial strength on the mechanical properties of the corresponding fiber-matrix composites are experimentally demonstrated in this work. Two composites containing different carbon fibers were tested: as-received fibers and fibers soaked in acetone to remove adhesive on their surfaces. The fiber surfaces were fi...

A cogeneration system is proposed in this study to produce H 2 and generate power from brown macroalgae with a high moisture content. The processes used in the cogeneration system consisted of drying, steam gasification, syngas chemical looping (SCL), and power generation. Enhanced process integration technology was utilized to maximize heat recove...

Abstract Due to their high potential and beneficial characteristics, algae is considered as very promising energy source in future. In this study, an integrated conversion system of algae to hydrogen is proposed with the objective of high total energy conversion efficiency. The proposed system mainly covers algal drying, gasification, and chemical...

Abstract A kinetic study of steam gasification of char derived from solid recovered fuel (SRF) was performed. The char was prepared by using pyrolysis and using a nitrogen atmosphere at a temperature of 900 °C for 1 h. Gasification in a steam atmosphere was conducted for the char product using isothermal thermogravimetry analysis (TGA). The gasific...

This study employs wet torrefaction process (also known as hydrothermal) at low temperature. This process simultaneously acts as waste processing and separation of mixed waste, for subsequent utilization as an alternative fuel. The process is also applied for the delamination and separation of non-recyclable laminated aluminum waste into separable...

Bio-based fertilizers are currently gaining interest as a method for reducing the use of chemical fertilizers and as a means for safe disposal of biomass waste. Feathers, which are an abundantly available biomass and have a high N content, are a potential source of fertilizer nutrients. In this study, chicken feathers were subjected to hydrothermal...

A process simulation-based study was done to evaluate the integration of steam gasification and chemical looping combustion to produce hydrogen while generating power from algae (Fucus serratus). The process simulation was done using ASPEN Plus software package. The integrated system consists of drying, steam gasification, chemical looping combusti...

In this study, the comparison of the pellets produced from untreated EFB, the hydrothermally treated empty fruit bunch (HTT-EFB) and washed HTT-EFB was performed. The pelletization of the raw EFB, HTT-EFB, and washed HTT-EFB was conducted using a single pellet making device. In experiments performed at room temperature under a densification pressur...

An integrated system for H2 production from microalgae and its storage is proposed employing enhanced process integration technology (EPI). EPI consists of two core technologies, i.e. exergy recovery and process integration. The proposed system includes a supercritical water gasification, H2 separation, hydrogenation, and combined cycle. Microalga...

In this study, Newlands coal, spirulina microalgae samples and mixtures of them were gasified in a fixed-bed downdraft reactor by CO2 at the atmospheric pressure and in the temperature range of 950-1000 ºC. The effects of the reaction temperature, the CO2 partial pressure and the blending ratio on the syngas yield were studied. Results showed that...

An integrated system for converting brown coal to H 2 and power is proposed. This system consists of coal drying, coal direct chemical looping, combined cycle, and hydrogenation. The energy involved in each module is recirculated thoroughly before it is integrated with the other modules, meaning that any unrecoverable energy can be utilized in othe...

In this study, the investigation of hydrothermal treatment (HTT) of palm oil empty fruit bunches (EFB) on both solid product and liquid residue characteristics was conducted. The effects of HTT were investigated at temperatures of 100, 150, 180 and 220°C with 30 minutes holding time. Hydrochars were characterized by elemental analysis, SEM, ash ana...

The hydrothermal treatment (HT) has demonstrated the ability to improve fuel characteristics of biomass. On the other hand, the liquid by-product, which potentially contains solubilized nutrient, is being poorly utilized. This paper presents an investigation on HT of empty fruit bunch (EFB) on both solid and liquid product characteristics. In this...

Solar energy is promising renewable energy which can be applied in Indonesia. Average solar radiation in the country is 4.8 kWh/day/m2. Weakness of silicon-based photovoltaic (PV) is efficiency reduction caused by temperature increase. Many attempts have been done to reduce PV temperature. In previous study, palm oil, which is widely available in I...

Empty fruit bunch (EFB) can be used as a solid fuel for heat and power generation. However, high ash particularly potassium content can cause slagging, and fouling which negatively affect thermal conversion systems. A pretreatment process to remove potassium and achieve better solid fuel characteristics from EFB was proposed by employing the hydrot...

Oil palm empty fruit bunches (EFB) are currently poorly utilized residue from palm oil processing but considered to be a potential feedstock for power generation. This study focuses on the combination of the hydrothermal (HT) conversion and the water leaching to produce low-potassium biofuel in order to reduce the slagging and fouling potential of...