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All Journal Teknomekanik Geosfera Indonesia
Hapsari, Harrini Mutiara
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Earth & Planetary Sciences Education Environmental Science Mechanical Engineering

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Experimental study of gas adsorption using high-performance activated carbon: Propane adsorption isotherm Aprianti, Tine; Hapsari, Harrini Mutiara; Permata, Debby Yulinar; Aprilyanti, Selvia; Sobey, Justin; Pham, Kallan; Kandadai, Srinivasan; Chua, Hui Tong
Teknomekanik Vol. 7 No. 1 (2024): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v7i1.28672

Abstract

Activated carbon is widely used for its diverse adsorptive abilities, with a vast range of current and emerging uses. This study developed a data set for high-performing activated carbon, its adsorption abilities with differing adsorbents, and an understanding of what deviations are present compared to the widely used adsorption models. This study included the construction of Tóth isotherms in varying conditions. Building a strong isotherm correlation is desired, with an understanding of the relationship between the pores of the activated carbon sample, operating parameters, and the adsorbent. The present data could complement efforts in designing adsorbed natural gas storage systems. Experimental data was collected using a Constant Volume Variable Pressure (CVVP) apparatus, consisting of a temperature-regulated vessel containing the activated carbon sample dosed with varying adsorbents through a controlled dosing vessel. Analysis of the derived data gave a well-fitted Tóth adsorption isotherm, giving the maximum specific adsorption capacity of the activated carbon to be 2.28 g of propane per gram of activated carbon with a standard error of regression
Spatial Dynamics and Social Interactions in Planning Open Spaces of Dense Musi Riverside Settlements, Palembang Oktarini, Maya Fitri; Triyuly, Wienty; Lussetyowati, Tutur; Hapsari, Harrini Mutiara
Geosfera Indonesia Vol. 10 No. 1 (2025): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v10i1.51702

Abstract

Providing open space in densely populated settlements is challenging due to the lack of open land. In contrast, open space is essential in these settlements as a place for social interaction in highly communal settlements. In addition to these challenges in riverbank settlements, planning open space is also necessary, considering the landscape's characteristics and the settlement's unique culture. This study investigates the potential of alternative spaces as a solution for providing open space. The study began by observing the population's activities to be mapped according to age group and gender. Data were collected in settlements along the banks of the Musi River in Palembang. Identification began by mapping open space on a spatial map showing the location and distribution and the type of open space in the settlement area. Open space is formed informally in various spaces in the settlement. Multiple demographic groups generally use six types of open space. Furthermore, the data was processed using contingency and distribution analysis to see the size of the group in activities in the open space, the activities carried out, and the location of the open space. The results of the analysis show that different needs and patterns of involvement in groups of adults, adolescents, and children must be considered in planning and design. This study concludes that optimizing open spaces according to residents' activity patterns can solve the limitations. Riverbanks have the potential to serve as open spaces, requiring further longitudinal and qualitative research to understand usage patterns and community perceptions.  
Spatial Dynamics and Social Interactions in Planning Open Spaces of Dense Musi Riverside Settlements, Palembang Oktarini, Maya Fitri; Triyuly, Wienty; Lussetyowati, Tutur; Hapsari, Harrini Mutiara
Geosfera Indonesia Vol. 10 No. 1 (2025): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v10i1.51702

Abstract

Providing open space in densely populated settlements is challenging due to the lack of open land. In contrast, open space is essential in these settlements as a place for social interaction in highly communal settlements. In addition to these challenges in riverbank settlements, planning open space is also necessary, considering the landscape's characteristics and the settlement's unique culture. This study investigates the potential of alternative spaces as a solution for providing open space. The study began by observing the population's activities to be mapped according to age group and gender. Data were collected in settlements along the banks of the Musi River in Palembang. Identification began by mapping open space on a spatial map showing the location and distribution and the type of open space in the settlement area. Open space is formed informally in various spaces in the settlement. Multiple demographic groups generally use six types of open space. Furthermore, the data was processed using contingency and distribution analysis to see the size of the group in activities in the open space, the activities carried out, and the location of the open space. The results of the analysis show that different needs and patterns of involvement in groups of adults, adolescents, and children must be considered in planning and design. This study concludes that optimizing open spaces according to residents' activity patterns can solve the limitations. Riverbanks have the potential to serve as open spaces, requiring further longitudinal and qualitative research to understand usage patterns and community perceptions.  
Co-Authors Aprianti, Tine Chua, Hui Tong Kandadai, Srinivasan Lussetyowati, Tutur Oktarini, Maya Fitri Permata, Debby Yulinar Pham, Kallan Selvia Aprilyanti, Selvia Sobey, Justin Wienty Triyuly