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Aceh International Journal of Science and Technology

AIJST
Website

Published by Universitas Syiah Kuala

ISSN : 20889860 EISSN : 25032348 DOI : http://10.13170/aijst

Core Subject : Science, Agriculture, Engineering,

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences

Aceh International Journal of Science & Technology (AIJST) is published by the Graduate School of Syiah Kuala University (PPs Unsyiah) and the Indonesian Soil Science Association (Himpunan Ilmu Tanah Indonesia, Komda Aceh). It is devoted to identifying, mapping, understanding, and interpreting new trends and patterns in science & technology development, especially within Asian countries as well as other parts of the world. The journal endeavors to highlight science & technology development from different perspectives. The aim is to promote broader dissemination of the results of scholarly endeavors into a broader subject of knowledge and practices and to establish effective communication among academic and research institutions, policymakers, government agencies, and persons concerned with the complex issue of science & technology development. The Journal is a peer-reviewed journal. The acceptance decision is made based upon an independent review process supported by rigorous processes and provides constructive and prompt evaluations of submitted manuscripts, ensuring that only intellectual and scholarly work of the greatest contribution and highest significance is published. The AIJST publishes original conceptual and research papers, review papers, technical reports, case studies, management reports, book reviews, research notes, and commentaries. It will occasionally come out with special issues devoted to important topics concerning science & technology development issues. Scopes Starting in 2016, AIJST has focused on science and engineering aspects, and therefore now AIJST considers the topics but not limited to : Engineering (Mechanical, Chemical, Civil, Transportation) Geology and Geomorphology Environmental Science (Hydrology, Pollution, Water Treatment, Soil Science, Climatology) Physical Oceanography Mathematics Physics and Geophysics Geospatial and Information Technology

Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Global dan Perubahan Planet

Articles 8 Documents

Search results for , issue "Vol 6, No 3 (2017): December 2017" : 8 Documents clear

Canteen Wastewater and Gray Water Treatment Using Subsurface Constructed Wetland-Multilayer Filtration Vertical Flow Type with Melati Air (Echindorus paleafolius) Ariani Dwi Astuti; Astri Rinanti; Alexandre Amo F. Viera
Aceh International Journal of Science and Technology Vol 6, No 3 (2017): December 2017
Publisher : Graduate Program of Syiah Kuala University

Domestic wastewater needs to be treated because it can pollute the environment, either water bodies, ground water, or soil. One alternative to treat domestic wastewater is using subsurface constructed wetland methods. This method has advantages, among others, cheap, simple technology and can be applied to the area of ample land. In this research, subsurface contructed wetlands-multilayer filtration with vertical flow type using Melati Air (Echindorus paleafolius) in field scale to treat domestic wastewater from canteens and gray water toilet of Senior High School at Bekasi with treatment capacity for 2261 L/day. Subsurface constructed wetlands-multilayer filtration with vertical flow type is an advanced treatment in this research. For preliminary treatment the collecting and aeration tank is used. Performance of subsurface constructed wetland-multilayer filtration with vertical flow type was able to achieve effluent COD parameters of 40 mg / L (standard 100 mg/L) from an average influent of 350 mg/L with removal efficiency of 90%, while BOD was successfully degraded to 33.00 mg/L (quality standard 30 mg/L) of an average influent concentration of 350 mg/L. In addition, the parameters analyzed are total nitrogen, the total phosphate succeeded to meet the quality standard. Based on the results of laboratory analysis, the reactor is able to treat organic loading of 500-700 kg BOD5/Ha/Day compared to previous research which is range from 40-300 kg BOD/Ha/ Day. Similarly, the value of K in this study ranged from 0.35-0.57 m/day for BOD and 0.37-0.45 m/day for COD compared to precious research which is 0.055-0.16 m / day for BOD and 0.027-0.16 m / day for COD.

Pedestrian Space Characteristics Analysis on Kyai Tapa-KH. Hasyim Ashari Street Corridor, West Jakarta Quintarina Uniaty
Aceh International Journal of Science and Technology Vol 6, No 3 (2017): December 2017
Publisher : Graduate Program of Syiah Kuala University

The city of Jakarta shows special characteristics in social, economic and cultural structures, a characteristic of urban life that gives much influence to its physical form. Development of the city is faced with problem of environmental degradation caused by unbalanced provision of urban infrastructure and facilities against the heterogeneity of urban needs and activities. The services provided by municipal government are more often unable to keep up with increasing demands of society's needs. Urban spatial and specific facilities built to expect community activities in accordance with the facilities built.This paper aims to put forward the results of studies that have been done about public perception use of pedestrian and public space area at object study, the characteristics of user's activities area region object of research and empirical data about the problem of pedestrian path as part of a public space that is related to behavior of community activity. The research method is Descriptive Analysis as a research that suggests the phenomenon that occurs and see and seek interrelations. It is a combination of descriptive survey method with analytical survey method of a phenomenon. Case studies presented as an object of analysis at a later stage, to be able to better explain the facts found and influence between variables. Built environment as product and work in form of space, volume, structure, ornament; needed as a message representing the norms and values of society, perceptions and aspirations, including developing their motivations and expectations explicitly or implicitly. City life activities require pedestrian space adapted to the aspirations of its people, as an effort to humanize pedestrians into the pedestrian area planning as a spatial dimension in urban area physical development.

Water Footprint Analysis In Krueng Aceh Watershed, Aceh Province, Indonesia Purwana Satriyo; Hidayat Pawitan; Yanuar J Purwanto; Yayat Hidayat
Aceh International Journal of Science and Technology Vol 6, No 3 (2017): December 2017
Publisher : Graduate Program of Syiah Kuala University

Water is one the most important natural resources to maintain human life and all other living things in the earth. Around 65% water were consumed for drinking purpose, while others were used for daily needs. The increasing amount of work on water use and scarcity in relation to consumption and trade has led to the emergence of the field of Water Footprint (WF). Climate change, rural development, world population growth and industrialization have placed considerable stress on the local availability of water resources. Thus, it is necessary to perform study in order to analyze water demands and supply for sustainable water availability. Recently, water footprint analysis has been widely draw attention to the scientists and engineers. The water footprint analysis is closely related with virtual water from which it is defined as total water volume used for consumption and trade. The main aim of this present study is to analyze and assess the total water requirement based on community water footprint in Krueng Aceh watershed area. The virtual water used in this study are dominant consumption food commodities. The result shows that water footprint per capita in Krueng Aceh watershed area was 674.52 m3/year. Water footprint for rural and urban population were 608.27 m3/year and 740.77 m3/year respectively. The WF of food consumption in urban area of Krueng Aceh watershed is 690.74 m3 / capita / year and 584.22 m3/capita/year or average 625.69 m3/capita/year, while for non-food, the WF per capita is 24.05 m3/year in rural or 32.46% of the total water footprint. Non-food consumption per capita in Krueng Aceh and in urban areas is 50.03 m3/year or 67.53%. The total water demand based on the water footprint is 378,906,655.05 m3 in 2015 which is consumed by most of residents in the Krueng Aceh watershed area. Furthermore, total WF in rural and urban area are 193,489,128.95 m3 and 185,417,526.10 m3 respectively.

Investigation of Subgrade Particles Acceleration Due To Dynamic Loading Rini Kusumawardani
Aceh International Journal of Science and Technology Vol 6, No 3 (2017): December 2017
Publisher : Graduate Program of Syiah Kuala University

Detail investigation on flexible pavement due to of vehicles traversed was presented in this paper. The behaviour of subgrade particles acceleration on flexible pavement are investigated and is explained in order to obtain the comprehensive understanding about pavement. Investigation were conducted in the highway which have a yearly higway construction problems. The data collected represented three axis main principal direction (x, y and z axis) movements. The main objectives of this work is to evaluating the effects of vehicle traverse on the pavement to several parameter, such as acceleration, thickness of pavement and natural frequency of subgrade. The results are useful as a new approach of pavement design as well as flexible or concrete pavement by considering some parameters analyzed.

The Analysis of SEIRS-SEI Epidemic Models on Malaria with Regard to Human Recovery Rate Resmawan Resmawan; Paian Sianturi; Endar Hasafah Nugrahani
Aceh International Journal of Science and Technology Vol 6, No 3 (2017): December 2017
Publisher : Graduate Program of Syiah Kuala University

This article discusses SEIRS-SEI epidemic models on malaria with regard to human recovery rate. SEIRS-SEI in this model is an abbreviation of the population class used in the model, ie Susceptible, Exposed, Infected, and Recovered populations in humans and Susceptible, Exposed, and Infected populations in mosquito. These epidemic models belong to mathematical models which clarify a phenomenon of epidemic transmission of malaria by observing the human recovery rate after being infected and susceptible. Human population falls into four classes, namely susceptible humans, exposed humans, infected humans, and recovered humans. Meanwhile, mosquito population serving as vectors of the disease is divided into three classes, including susceptible mosquitoes, exposed mosquitoes, and infected mosquitoes. Such models are termed SEIRS-SEI epidemic models. Analytical discussion covers model formation, existence and stability of equilibrium points, as well as numerical simulation to find out the influence of human recovery rate on population dynamics of both species. The results show that the fixed point without disease ( ) is stable in condition and unstable in condition . The simulation results show that the given treatment has an influence on the dynamics of the human population and mosquitoes. If the human recovery rate from the infected state becomes susceptible to increased, then the number of infected populations of both species will decrease. As a result, the disease will not spread and within a certain time will disappear from the population.

Residual Radioisotopes Generated from Neutron Irradiated Aluminum Capsules Imam Kambali; Indra Saptiama; Hari Suryanto
Aceh International Journal of Science and Technology Vol 6, No 3 (2017): December 2017
Publisher : Graduate Program of Syiah Kuala University

Aluminum (Al) is often used to house a molybdenum oxide (MoO3) target for neutron or proton-produced technetium-99m (99mTc) radioisotope. During neutron or proton bombardment of an Al body, residual radioisotopes could be generated following nuclear reactions between the incoming particles and the Al body. In this research, residual radioisotopes produced following nuclear reactor based-neutron irradiation of Al body were experimentally measured using a portable gamma ray spectroscopy system; whereas TALYS 2015 calculated data were used to evaluate various nuclear reactions for the by-product identification. As a comparison, Al body used in a cyclotron-based 99mTc production was also analyzed. Experimental data indicated that relatively long-lived radioisotopes such as 26Al, 22Na and 24Na were identified in the Al body following nuclear reactor-based 99mTc production, whereas the presence of 27Mg radioisotope was, for the first time, experimentally detected in both the Al bodies for nuclear reactor-based and cyclotron-based 99mTc production. A special safety attention should be paid to the radiation workers when producing 99mTc using a nuclear reactor since it generates 26Al (half life = 716,600 years).

Adsorption of 2,4,6-trichlorophenol on kaolinite: DFT calculations Sara Ghezali; Amina Mahdad-Benzerdjeb
Aceh International Journal of Science and Technology Vol 6, No 3 (2017): December 2017
Publisher : Graduate Program of Syiah Kuala University

The aim of this work is to explore the adsorption process of an organic pollutant the 2,4,6-trichlorophenol on the clay mineral (kaolinite) surface in order to identify the sites of adsorption as well as conformations corresponding to the lowest energies. Ab-initio calculations have been used to investigate the adsorption process using a representative cluster model. According to the results obtained on the various studied models, the orientation of TCP on the surfaces clay affect the parameters such as : HOMO-LUMO energy gap, the enthalpy change (ΔH), the thermal Gibbs free energy (ΔG) and entropy contribution (ΔS). The results point out a preferential adsorption of TCP on the octahedral surface and the NBO analysis indicates that the electron donor-acceptor complex was the dominant adsorption mechanism.

Characteristic of concrete using acetylene sludge as a substitute material for sand and cement Dwi Indrawati; Rian Prasetyo Wisnu; Hilarion Widyatmoko
Aceh International Journal of Science and Technology Vol 6, No 3 (2017): December 2017
Publisher : Graduate Program of Syiah Kuala University

Acetylene sludge comes from the production of acetylene gas which is produced in large quantities from industrial plants. Since acetylene sludge waste has a baling and mortar properties as well as lime derivative products, they can be used as substitutes or substitutes for cement in concrete products and other construction materials. The aim of this study is to obtain a concrete with a proper strength and comply the toxicity standards by utilizing acetylene sludge waste. The waste (containing of 60% acetylene sludge and 40% fly ash) is utilized by mixing it on some series of trial that are 5%, 10%, and 15% waste from the main concrete materials. The concrete strength is measured using Compressive Strength Test Method that refers to Indonesian National Standard No. 1974:2011. Other than that, Toxicity Characteristic Leaching Procedure (TCLP) test were also done using Optical Emission Spectrometer to determine the leaching potential from concrete utilization. The concrete paste gave the value of slump 6 and 7 with concrete mixture declined by 15-18 cm. Result showed that the strongest concrete is from the mixture of 15% sand material that was substituted by the acetylene sludge waste with the strength value of 41.9 MPa. TCLP test results were given the value of Barium 0.019 mg/L and Chromium 0.680 mg/L with a pH value of 12.24. Referring to Indonesian Government Regulation No. 101 Year 2014, the quality standards of Barium and Chromium are 35 mg/L and 2.5 mg/L. That showed the characteristic of concrete which is produced from acetylene sludge waste complies the standards and safe for the environment.

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Sugianto

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+6281360560198

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journal.aijst@usk.ac.id

Editorial Address
Graduate Program of Syiah Kuala University Kopelma Darussalam, Banda Aceh 23111, Aceh, Indonesia. Phone: 62-(0)651- 7407659. E-mail: journal.aijst@usk.ac.id

Location
Kab. aceh besar,

Aceh

INDONESIA

Abstract

Abstract

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Abstract

Abstract

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Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Sugianto

Contact Email sugianto@usk.ac.id

Phone +6281360560198

Journal Mail Official journal.aijst@usk.ac.id

Editorial Address Graduate Program of Syiah Kuala University Kopelma Darussalam, Banda Aceh 23111, Aceh, Indonesia. Phone: 62-(0)651- 7407659. E-mail: journal.aijst@usk.ac.id

Location Kab. aceh besar, Aceh INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Sugianto

Contact Email
sugianto@usk.ac.id

Phone
+6281360560198

Journal Mail Official
journal.aijst@usk.ac.id

Editorial Address
Graduate Program of Syiah Kuala University Kopelma Darussalam, Banda Aceh 23111, Aceh, Indonesia. Phone: 62-(0)651- 7407659. E-mail: journal.aijst@usk.ac.id

Location
Kab. aceh besar,

Aceh

INDONESIA