Sustinere: Journal of Environment and Sustainability is an open access interdisciplinary journal designed for the dissemination of broad and impactful investigations related to all aspects of environmental sciences â€“including environmental studies and engineeringâ€“ and discussions on sustainability issues from all standpoints. Sustinere welcomes contribution in the form of original communications (research paper), reviews, discussion papers, letters to editor, short communications, and also special themed issue on relevant topics. Contributions must demonstrate originality, meet the general criteria of scientific excellence, and be well written in English. All submitted manuscripts will be subjected to thorough double-blind peer review. Sustinere is committed to providing high-quality services to authors without charging any cost.
Food waste can be meat, fish, cooked food scraps, moldy bread, bone scraps, cakes, expired foods, dairy products, fruits and vegetables. Food waste which is put into the trash will decay and produce a foul odor which in turn will invite flies and cause potentially diseases. Most of the food waste that is processed using the composting process needs to spend a relatively long time, which is about 1-3 months or even 6-12 months. This study aims to accelerate composting time through the addition of additive microorganisms in various quantities. Four aerobic composter reactors were utilized in this study. Variations of additive microorganisms added to the research object were 0 in reactor (control), 8 g in B2 reactor, 16 g in B3 reactor, and 32 g in B4 reactor. All reactors were added with dolomite lime. During the composting process temperature, pH, water content and macroelement were tested. The results showed that the mature and stable compost was reached on the seventh day and produced from B2 reactor. In That reactor treated food waste and additive microorganisms with a ratio of 7:3, and 1 g dolomite lime. The level of C/N ratio produced from B2 reactor was 16.71. The value of C/N ratio was better than B3 reactor which produced C/N of 18.37. The control reactor produced a C/N ratio of 21.84 and mature and stable compost was reached on the 14th day. All in all, this study was regarded to be successful in accelerating the degradation of food waste into mature and stable compost in just seven days.
Oil palm empty fruit bunches (EFB) is one of the major by-products of palm oil production. This lignocellulosic biomass is commonly used as a fertilizer at oil palm plantations. Unfortunately, the composting process of EFB is very slow. This study aimed to identify potential lignocellulosic microbes isolated from EFB. This information is essential for improving EFB biodegradation process by reducing the decomposition time. Samples of approximately 6, 12, and 24-month-old EFB were obtained from two palm oil mills in East Kalimantan, Indonesia. The isolation of lignocellulytic microbes utilized selective medium cellulose congo red agar (CCRA) while its characterization used lignin agar (LgA) and oil palm empty fruit bunches agar (EFBCRA). As much as 430 isolates were successfully collected and 12 of them exhibited promising capability to synthesize lignocellulolytic enzyme, the key for FEB degradation.
Biodiversity loss is a global issue and is especially of pressing concern in mega diverse countries, such as Indonesia. To prevent any further catastrophe, the Ministry of Forestry and Environment of Republic of Indonesia has been promoting the resort based management to be implemented in Indonesia to maximize the performance of conservation activity. The lack of data standardization made it hard to organize and manage archipelagic country that consist 17,504 islands with no technology provision in most of them. In this paper we develop a framework of integration mobile-web technology for biodiversity and conservation in Indonesia. We introduced a new framework to maintain the biodiversity and conservation data in Indonesia.
The cultivation of freshwater fish with floating net-cages system in the area of Jatiluhur Reservoir, Purwakarta Regency has increased in quantity. It results in the pollution and sedimentation because of development of floating net-cages business which exceeds the carrying capacity of the reservoir. This research aimed to analyze the carrying capacity of Jatiluhur Reservoir, conduct the institutional analysis, and analyze the perception of stakeholders involved in floating net-cages management in Jatiluhur Reservoir. Interview and literature review were used as the primary and secondary data collection methods. The results showed that the number of floating net-cages units in accordance with the carrying capacity of Jatiluhur Reservoir was amounted to 6,838 floating net-cages. For the management of floating net-cages in Jatiluhur Reservoir, the Department of Animal Husbandry and Fisheries of Purwakarta Regency and Perum Jasa Tirta II have important roles in formulating regulations and providing guidance to the fish farmers. The transaction costs spent on formulating regulations and providing guidance by the Regional Government of Purwakarta Regency was amounted to Rp 689,400,000 per year while Perum Jasa Tirta II spent amounted to Rp 70,107,900 per year. Although stakeholders have common perception on ecological and economic aspects, they have different perception on the management aspects of floating net-cages.
The purpose of this study was to investigate the characteristics of ACERALIVEN™, a commercial tourmaline, and to test its effect on plant growth. According to our analysis, ACERALIVEN™ belongs to the Si-Al-Mg tourmaline structure. It contains some trace metals such as zirconium, potassium, and iron and able to emit far-infrared energy in the emissivity of 0.829. Introducing the tourmaline into water changes the water to be more alkaline. Tourmaline also releases negative hydroxyl ions and dissolved oxygen creating what is called as hydrogen water. Mung beans submerged with ACERALIVEN™ shows a longer lifetime than without submerging the tourmaline. Additionally, the tourmaline can promote plant growth by removing chlorine and releasing far-infrared which is beneficial for plant’s metabolism.
Kamoning River watershed is one of the watersheds in Sampang. Sampang City experienced flooding almost every year caused by the overflow of the River Kamoning. One of the causes of flooding in that city is the high rainfall and a lack of rainwater catchment areas in the upper and middle Kamoning River watershed. To overcome these problems, it is necessary to use a system of flood discharge reduction eco drainage in the upstream and in the middle of Kamoning River watershed. This study used two scenarios of eco-drainage system: first is to change the land use in combination with the creation of retention ponds, the second scenario is to change the land use in combination with the creation of infiltration wells. From the analysis of large unknown, designed-flood discharge of 50 year-return period of Kamoning River basin is 289.361 m3/ sec. By using the first scenario, the designed-flood discharge can be reduced by 199.59 m3/s or 31.02%, while large designed-flood discharge can be reduced by 205.20 m3/s or 29.08% using second scenario. Efforts to reduce the discharge flood in Sampang can be effectively conducted by using the scenario 1.
Karangpilang II Water Treatment Plant (WTP) is a part of Karangpilang WTP of Surabaya Water Utilities that serves the water supply for Surabaya City. Karangpilang II WTP has the biggest clean water production capacity in Karangpilang WTP, which is 2500 L/s. Using conventional treatment to remove turbidity, the treatment plant in Karangpilang II WTP consists of pre-sedimentation, clearator and filter units. In this study, evaluation of turbidity quality in production water and turbidity removal efficiency were conducted to analyze the Karangpilang II WTP performance in turbidity treatment. The evaluation was conducted using the 2016 data, by comparing the turbidity of production water with the Water Quality Standard of the Water Utilities, and by comparing the turbidity of raw water, effluents of each treatment unit and production water. The evaluation result showed that in the case of Karangpilang II WTP turbidity removal performance, there were some occurrences that the turbidity in production water has not met the standard quality. The results also showed that there was a unit in the Karang Pilang II WTP with inadequate performance in turbidity removal, namely pre‑sedimentation unit. There are some solutions for the problem of turbidity removal in Karangpilang II WTP: increasing the maintenance schedule for pre-sedimentation unit; determining the proper turbidity reference in determination of coagulant dose; optimizing the coagulant dose; using produced sludge from water treatment as coagulant aid along with Al2SO4; and using capping material in filter unit.
One of the environmental issues that can affect human health is air pollution. As the second largest city in Indonesia, economic development and infrastructure construction in the city of Surabaya led to the increasing role of industrial and motor vehicle use which is proportional to the increase in fuel oil consumption. This condition ultimately led to declining air quality. Gas pollutants that contribute to air pollution such as CO, SO2, O3, NO2 and particulate matter PM10 are pollutants that have a direct impact on health. This study aims to analyze, monitor and predict air pollutant concentrations recorded by the Environment Agency Surabaya City based on time series with Fuzzy Time Series.MAPE calculation results on the parameters of pollutants are NO2: 23.6%, CO: 19.5%, O3: 22.75%, PM10: 9.96% and SO2: 3.6%.
The whole planning of urban infrastructure development should refer to the Detailed Spatial Planning that has been developed by the Regional Government. One of them is the drainage system planning which also needs to pay attention to the land use change plan. This change would cause an increase of run-off coefficient as a result of the increasing number of structure-covered land. Based on the land use planning of Spatial Structure Planning 2034, there was an increase in land cover with a total area of 75 hectares. Therefore, it is necessary to evaluate the urban drainage system in order to avoid problems in the future. Flood discharge was calculated using the rational formula applying run-off coefficient according to spatial structure plan. The analysis of the existing drainage system was carried out to find out whether it is still capable of accommodating the discharge according to Spatial Structure Planning 2034. Based on the drainage channel capacity analysis, 30 existing channels have to be repaired. They must be adjusted by widening the channel and increase the number of channels by 3191.36 m. Another effort to reduce the flood is by making 179 absorption wells in residential areas.
The MIPA Tower office building, an eleven-storey building, which is located in the area of Institut Teknologi Sepuluh Nopember Surabaya, is under construction. The building will be utilized for offices, classrooms, and laboratories. In the operation of the building, domestic and laboratory wastewater will be produced. This wastewater contains compounds that can pollute the environment. A design of domestic and laboratory wastewater treatment system is conducted. The system comprises of a neutralization tank, a grease trap, an equalization tank, an anaerobic filter, and an activated carbon and silica sand filter.
The steps of the design are (i) collecting primary data and secondary data, (ii) calculating the engineering design, (iii) drawing the Detailed Engineering Design (DED), and (iv) calculating the bill of quantity and budget.
The conclusion of this design is that the treatment plant will treat a mixture of domestic and laboratory wastewater. The dimension of each unit is as follows: (i) the neutralization tank (Ø = 0.65 m, H = 0.43 m), (ii) the grease trap (4 m x 2 m x 1 m), (iii) the equalization tank (10.5 m x 5.5 m x 2.5 m), (iv) the septic tank (4.5 m x 4 m x 2.5 m), (v) the six-compartment anaerobic filter (2.25 m x 4 m x 2.5 m), and (vi) the filter with activated carbon (H = 50 cm), silica sand (H = 150 cm), and gravel (H = 10 cm), with the diameter of the tank is 1.5 m.