INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY

Journal Information
ISSN / EISSN : 2579-9150 / 2579-9207
Current Publisher: Universitas Trisakti (10.25105)
Total articles ≅ 62
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Elahe Mirabi, Nasrollahi Nazanin
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY, Volume 4; doi:10.25105/urbanenvirotech.v4i1.7151

Abstract:
Designing urban facades is considered as a major factor influencing issuessuch as natural ventilation of buildings and urban areas, radiations in theurban canyon for designing low-energy buildings, cooling demand forbuildings in urban area, and thermal comfort in urban streets. However, sofar, most studies on urban topics have been focused on flat facadeswithout details of urban layouts. Hence, the effect of urban facades withdetails such as the balcony and corbelling on thermal comfort conditionsand air flow behavior are discussed in this literature review. Aim: Thisstudy was carried out to investigate the effective factors of urban facades,including the effects of building configuration, geometry and urbancanyon’s orientation. Methodology and Results: According to the results,the air flow behavior is affected by a wide range of factors such as windconditions, urban geometry and wind direction. Urban façade geometrycan change outdoor air flow pattern, thermal comfort and solar access.Conclusion, significance and impact study: In particular, the geometry ofthe facade, such as indentation and protrusion, has a significant effect onthe air flow and thermal behavior in urban facades and can enhanceoutdoor comfort conditions. Also, Alternation in façade geometry canaffect pedestrians' comfort and buildings energy demands.
Anindrya Nastiti, Siska Widya D Kusumah, Mariana Marselina, Karina Nursyafira, Astrid Monica, Dharmawan Phan
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY, Volume 4; doi:10.25105/urbanenvirotech.v4i1.7191

Abstract:
Aim: This paper aims to understand how the concept of risk and riskgovernance can be best articulated and integrated into Indonesia’s SEA.Attention regarding health risks emerging from human interactions withthe physical environment has increased in Sustainable Development andPlanning (SDP). Methodology and Results: Strategic EnvironmentAssessment (SEA) is the current context-based methodology addressingenvironmental and health risks of development planning in manycountries. Environmental and health risk assessment (EHRA) is anintegrated part of the SEA. EHRA, as a field of science, has evolved towardsspecific needs in many sectors, e.g. dose-response, quantitative microbialrisk assessment, ecological risk assessment. The main challenge is how todetermine the suitable EHRA approaches and translate the fact-basedEHRA into risk-informed strategies in SDP. In Indonesia, the SEA is mandatory for regional planning documents. However, there is limitedguidelines and application on EHRA in SEA. Through a meta-analysis, wereviewed scholarly articles published from 2009 to 2019 available inGoogle Scholar that report the concepts and implementation of EHRA andSEA in various countries. Conclusion, significance and study impact: Thisstudy has significant implications for the understanding of risk governancein SDP.
Ezekiel Oiganji, K. I. Dikam
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY, Volume 4; doi:10.25105/urbanenvirotech.v4i1.6768

Abstract:
Aim: This study was carried out to assess concentration status of someheavy metals in water along River Dilimi, Nigeria. The Nigerian inland waterbodies have been subjected to various forms of degradation due topollution. River Dilimi in Jos North of Plateau state capital is one of suchendangered inland water bodies. Activities around and in the river has ledto discharge of various heavy metal pollutants into the aquaticenvironment rendering water unsuitable for its intended purposes.Methodology and Results: Six (6) water samples were collected at theupper, centre and lower section of the river at the 20 and 120 cm depth, for every six (6) weeks making a total of eighteen (18) samples, Analyzed atNigerian Institute of Mining and Geosciences, Jos. The water samplescollected were pre-treated with few drops of concentrated Nitric acid, anddigested with Aqua-regia in the ratio of 3:1 for an hour. Different standardsolutions were prepared for AAS analysis under Beer-Lambert method ofmetal analysis using Atomic Absorption Spectrophotometer (AAS). Thedata obtained were subjected statistical analysis. The results obtained fromanalyzed water samples were alarming, iron, lead, cadmium andManganese were above the recommended threshold by 277, 6,400, 1,233and 580% accordingly, while zinc and copper were within permissible limit.Conclusion, significance and impact study: River Dilimi can be said to behighly concentrated with hazardous metals of concern like Fe, Pb, Cd andMn. This as a result of bioaccumulation will affect human and animalhealth, aquatic life and crop productivity.
Muhammad Burhannudinnur, Rosmalia Dita Nugraheni, Astri Rinanti
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY, Volume 4; doi:10.25105/urbanenvirotech.v4i1.8001

Abstract:
The recent eruption of Kesongo mud volcano (MV) that occurred in 28August 2020 in Blora, Central Java was a common natural phenomenon.MV eruption occurred periodically depending on the recharge fluid systemthat interconnected to a geothermal system and hydrocarbon reservoir.During the eruption, methane and CO2 gas were emitted to theatmosphere together with rocks, muds and fluids flowing from the fractureand fault system of MV. The extruded materials could be harmful andbeneficial for the affected ecosystem. Aims: This study aimed to addressthe potential impact of the extruded mud volcano materials to theenvironment. Methodology and Results: An attempt was carried out byinvestigating gas and fluid content of every mud volcano morphology in theselected 11 areas of Kradenan, Central Java and Sidoarjo, East Java. The pristine fluids and gas of MV were sampled for chemical and toxiccompound observation. Gas composition and type was observed using gaschromatography. The result shows that methane gas content ranges from0.06 to 67.6 mol%., while the CO2 content ranges from 0.21 to 79.9 mol%.Methane gas exhibits thermogenic gas that associated with hydrocarbongeneration. Conclusion, significance and impact study: The chemicalcompound of fluids indicates high Boron (B) content above 0.5 ppm whichhas harmful effect for crops and human health, but some compounds ofCa, Na, K, Mg present as essential elements for soil nutrient. According tothe methane flux and chemical compound emitted by mud volcano, thisstudy contributes to a management practice to restore and conserve the global ecosystem.
Gauri Singh, Ashok Kumar Singh
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY, Volume 4; doi:10.25105/urbanenvirotech.v4i1.8000

Abstract:
Aim: The effluent discharged from sugarcane molasses based distilleries causes environmental pollution due to its large volume and dark brown colour. The effluents also acifidys soils and causes harmful effects on agriculture crops. The objective of this work was the decolourization of molasses waste water from Doiwala sugar industry, Dehradun was done using different microbial consortiums. Methodology and Results: The microbial strains used in this study were obtained from IMTECH, Chandigarh. They were designated as A is E. coli, B is Pseudomonas aeruginosa, C is Staphylococcus aureus, D is Serritia odoriferae, E is Proteus vulgaris and F is Candida albicans. A total of six combinations were prepared using these strains i.e A+B, C+D, E+F, A+B+C, D+E+F and A+B+C+D+E+F. These consortiums were subjected to decolorization experiment of molasses waste water from Doiwala Sugar Factory, Dehradun, India at regular time interval by measuring the optical density. It was observed that at 7th day incubation in each case all consortiums showed maximum decolorization after which the percentage of decolorization was stable. It was also observed that the bacterial consortiums showed higher decolorization than the mixture of bacteria and fungi. Consortium C+D showed highest decolorization i.e. 89%. Conclusion, significance and impact study: it is recommended that industry should work with this consortium for decolorization of molasses containing wastewater to solve this environmental problem.
Adewumi A, Lasisi K H, Akinmusere O K, Ojo A O, Babatola J O
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY, Volume 4; doi:10.25105/urbanenvirotech.v4i1.8004

Abstract:
Aim: A comparative study of biogas production from three soluble solid wastes was conducted under anaerobic conditions by subjecting each waste to both conventional and electrolyzed digesters. Methodology and Results: Varying weight of each of the waste was mixed thoroughly with water and fed into five digesters. Three of these digesters were electrolytically-enhanced while the other two were not. The digestion of each of the wastes was monitored for 40 days at an ambient temperature ranging from 24 to 35oC. In all the digesters, biogas production started on the day 2, and attained maximum value on day 14 to17. Biogas production ended on the day 34 and 35 in digester 1a, 1b, 2a and 2b with production ending earliest in digester 3 containing wastewater on day 19. The highest biogas was produced in digester 2b containing electrolyzed digester loaded with poultry droppings) with a cumulative volume percentage of 91.41 as compared to its conventional state with a cumulative volume percentage of 85.19 and both states of the cow dung waste with cumulative volume percentages of 77.26 and 71.64 respectively. The least production occurred in digester 3 with a cumulative volume percentage of 4.59. Conclusion, significance and impact study: It is therefore concluded that poultry droppings has the greatest potentials for the generation of biogas as compared to cow dung in conventional and electrolyzed state and wastewater.
Marlin A Koan, Jakobis Johanis Messakh, Soetedjo In P
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY, Volume 4; doi:10.25105/urbanenvirotech.v4i1.8003

Abstract:
Aims: This study discusses water resources management based on water discharge potential of the Oebobo-Liliba watershed in Kupang City, East Nusa Tenggara, Indonesia. Methodology and Results: River water discharge was analyzed based on hydrological data of a span of 10-years. Average rainfall was calculated using the arithmetic mean method, and potential evapotranspiration (ETo) was calculated through Penman Modification with CROPWAT 8.0. The discharge analysis was conducted through a Mock method. Change in land cover was rendered using related land maps from year 2008 and 2018. Management of agricultural land was discussed through a descriptive analysis. The results showed an average monthly discharge of 0.667 m3/sec. The need for clean water is rendered to be 170 liters/person/day, and the discharge requirement of 90% = 281 liters/sec is concluded to be able to meet the community's clean water needs which amounts to 142,569 people. The total area of paddy fields is 5.38 Ha with water requirements of 1.5 liter/sec/ha, where 80% or 348 Liter/sec can be used to irrigate 232 hectares of paddy. Further results show that land cover in dryland forests decreased from 15% to 10%, settlements increased from 20% to 49%, and shrubs diminished from 20% to 0%. Conclusion, significance and impact study: The minimum debit trend shows a declining trend, while the maximum discharge trend shows an inclining trend. This research concludes that water discharge is adequate to meet community needs yet requires proper water resources management strategy from upstream to downstream of the watershed.
, Lenny Marilyn Estiaty
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY, Volume 3, pp 123-135; doi:10.25105/urbanenvirotech.v3i2.5110

Abstract:
Aim: This paper aims to explain the added value increasing method of reject coal which has not utilized by the company. Methodology and Results: The method to increase added value in this study used the agglomeration process of briquettes form that changing composition by adding biomass. The biomass functions to minimize bottom ash produced from burning briquettes so that the briquettes burn entirely. Stages processes in this study consist of characterization, briquetting, physical test, and chemical test. Based on the analysis, reject coal still has a high calorific value of 5,929 cal/gr. Shapes and sizes that were not following needs of coal market or consumer due to reject coal to be a waste. Briquettes have been successfully produced and meet specification requirements based on applicable regulations in Indonesia. Besides physical properties, the briquette meet density requirements which are greater than or equal to 1 gr/cm3 and shatter index value is less than 0.5%. The gas emission test shows below threshold, which is CO 0-30 ppm, H2S 0-3.6 ppm, and NOx is not detected. After evaluation, it showed that by adding 30% biomass, ignition time could be decreased and remaining unburned briquettes or bottom ash was reduced as much as 68.68%. Conclusion, significance and impact study: The bio-coal briquettes is a strategic solution to environmental problems and alternative energy sources that are environmentally friendly, because CO and H2S emissions are still below the threshold, even for NOx not detected. Making Bio-coal briquettes as a solution to the utilization of reject coal mining waste to be used as an alternative energy source has been successfully carried out.
Rindang Ekawati, , Atlastieka Praptiwi
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY, Volume 3, pp 209-219; doi:10.25105/urbanenvirotech.v3i2.5840

Abstract:
Aim: This study aimed at comparing predictor variables associated with the environmental quality of first child. Since the beginning of 1987, Indonesian National Family Planning Board (BKKBN) has been discouraging early first marriage (marrying before 20 for females and before 25 for males). In 2016, BKKBN recommended ideal ages of marriage for females and males as old as 21 and 25 respectively. Methodology and Results: This study was a retrospective analysis involving 5 groups of data reported within the period of 1994-1997 (n=34,225), 1997-2000 (n=34,227), 2001-2004 (n=33,088), 2005-2009 (n=40,701), and 2009-2012 (n=45,607). Data were collected from the Indonesian Demographic and Health Survey datasets (SDKI [Survei Demografi dan Kesehatan Indonesia]). Data were analyzed using chi-square tests. Results indicated several variables that significantly contributed to the first child’s environment quality: (1) residential area (p value<0.05); (2) mother’s educational background (p value<0.05); (3) mother’s exposure to information media (p value<0.05); (4) mother’s employment status (significance were only found in two groups of data: 1994-1997 and 1997-2000 with each p value<0.05); (5) father’s educational background (p value<0.05). Conclusion, significance and impact of study: In conclusion, there was an inconsistency with regard to strong and weak potential factors of first child’s environment quality within an eighteen-year period. It is recommended to reassess the predictors. It is also important to develop strategies to improve marriage quality and family formation.
Faizal Rumagia, Mennofatria Boer, Rahmat Kurnia, Mohammad Mukhlis Kamal
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY, Volume 3, pp 136-148; doi:10.25105/urbanenvirotech.v3i2.5476

Abstract:
Aims: This study aims to assess the value sustainable development opportunity of the coral reef fisheries activities in Indonesia from the ecological, economic, and social aspect, with a case study of coral reef fisheries at the coastal area of Ternate Island, using the Sustainability Window (SuWi) approach. Methodology and Results: The data was collected from statistical data from relevant institutions and literature study, which consists of ecological, economic and social data, and analyzed using the Sustainability Window approach to determine the sustainability of the fisheries development. The result shows that the Sustainability Window of the coral reef fisheries in the research area tends to move towards sustainable development, where the national policy in catch fisheries management has an impact on the sustainable development and management of coral reef fisheries at the coastal area of Ternate Island. Conclusion, significance and impact study: The Sustainability Window of coral reef fisheries at the coastal area of Ternate Island tends to move towards sustainable processes, with the width of sustainability window that not too narrow to the coral reef fisheries activities at the provincial and national levels. This condition attaches strings to a precautionary approach in policy decision for the management process, and consideration to the effect that can result from the development policy, both at the provincial and national level. The use of Sustainability Windows approach can provide a new simple way for assessing whether the development has been towards a more sustainable direction or not.
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