Authors:Tiva Sisti, Sri Sumiyati, Budi Prasetyo Samadikun Pages: 1 - 13 Abstract: Genuk District is a residential development area which has a role as a Semarang City's transportation hubs. It is directly adjacent to Demak Regency and the Java Sea. As of the time of writing, Genuk District has a population of 117,174 people with the total of 130.88 m³ waste transported to the landfill each day and the percentage of waste transportation services in the area is 38.53%. The waste transportation average operational time is 0.2 hours exceeding the amount of working time with the number of 17 trips/day. This planning aims to arrange the waste transportation system in Genuk District by taking into account the traffic congestion in order to get the optimal operational time and costs. Arm roll truck vehicle operating costs in the existing conditions in 2020 was IDR 1,347,411,591.00, while in the optimized condition would be IDR 1,341,405,786.37. Meanwhile, dump truck vehicle operating cost in the existing conditions in 2020 was IDR 302,002,441.00, while in the optimized condition would be IDR 278,453,956.22. The operational time for waste transportation should be started at 06.00-15.00. After optimization, the average remaining working hours becomes 2.68 hours per day with a vehicle's speed of 57.11 km/hour. The planning for waste transportation system optimization will reduce the retribution costs by IDR 900.00 and increase the percentage of waste transportation services to 53%. PubDate: 2022-04-30 DOI: 10.22515/sustinerejes.v6i1.179 Issue No:Vol. 6, No. 1 (2022)
Authors:Ezra Abubakar, Rahmatu Yunusa Shariff, Yusuf Otaru Sadiq Pages: 14 - 25 Abstract: Inefficiency, emission of greenhouses gases and the deleterious effects of carbonaceous fuels on both human health and the environment are responsible for the increased in exploration and adoption of eco-friendly and sustainable fuels to various aspects of human development and production processes. This study was aimed at the generation, treatment and compressing of biogas into Liquefied Petroleum Gas Cylinder (LPGC) for deployment to firing ceramic kiln. The methodology involved the anaerobic digestion of cow dung and the treatment of the generated gas using water scrubbing technology. The results of the study showed an increased in methane content from an untreated value of 43.5% to 93.98%, the elimination of CO2, and H2S; reduction in volume of gas used in firing a ceramic kiln to 1030 °C from 22,300 L of untreated biogas to 492 L of treated biogas, as well as the prevention of 108,000 g of methane, 124,00 g of CO2, 74,400 g of CO and 173.6 g of NO2 from venting into the climate system. PubDate: 2022-04-30 DOI: 10.22515/sustinerejes.v6i1.192 Issue No:Vol. 6, No. 1 (2022)
Authors:Optimist Yohanna Habila Pages: 26 - 43 Abstract: This study aimed to make comparative analysis of perspectives of environmental and non-environmental NGOs in Jos Metropolis on key solid waste issues with a view to provide relevant data that would hopefully help in facilitating collaboration between the state and NGOs as well as between NGOs and relevant local and international development partners. Using purposive approach, 115 NGOs in the study area were identified and given the same questionnaire. The study revealed that there are just as many NGOs working in solid waste management (SWM) as there are NGOs that are not (50% each) and there was a link between the NGO categories across all of the parameters considered in the study. It also demonstrated that NGOs' organizational viewpoint on the solid waste issues examined in the study is unaffected by their orientation or primary field of activity, and that registration as a non-environmental NGO is not a disincentive to intervening the area of environment, particularly SWM. It is recommended that the state government adopts an all-encompassing approach or framework that allows for active NGO participation including all relevant stakeholders in the SWM initiatives undertaken by the responsible government agency. Similarly, local and development partners with interest in environmental protection need to assist the NGOs by partnering with them through funding, technical support, and research among other things. PubDate: 2022-04-30 DOI: 10.22515/sustinerejes.v6i1.207 Issue No:Vol. 6, No. 1 (2022)
Authors:Syaiful Syaiful, Hermanto Siregar, Ernan Rustiadi, Eri Susanto Hariyadi, Muhammad Nanang Prayudyanto, Rulhendri Rulhendri Pages: 44 - 54 Abstract: Each motor vehicle produces a variety of noise. For areas which directly intersects the highway this noise has a considerable impact. The volume of motorcycles and private as well as public vehicles all have a significant effect on noise. From all analytical calculations, the largest equation was obtained one the second day of research on the second point of Sound Level Meter 2 (SLM2). The calculation is that y = 0,0158x – 1,0176. This equation indicates that if there is no decrease in the volume of the motorcycle, the noise level on the SLM2 is 65.21 dBA. If there is an increase or decrease in the volume of a motorcycle, it will have a significant effect on noise. The second largest equation was obtained on the second day of the research at the third point from the Sound Level Meter 3 (SLM3) and the calculation of the equation is y = 0,01 – 6,074. The purpose of the above equation is that if there is an increase in the volume of a motorcycle, the noise on the SLM3 is 60.840 dBA. According to the findings, there was a reduction in the number of motorcycles during the Covid-19 pandemic, because schools were closed and students did not attend school. PubDate: 2022-04-30 DOI: 10.22515/sustinerejes.v6i1.194 Issue No:Vol. 6, No. 1 (2022)
Authors:Ajay Kumar Sinha Pages: 55 - 65 Abstract: Environmental awareness among masses has created tremendous pressure on government and corporates to preserve our natural resources. Globally, many companies have successfully initiated product recovery operations in their business plans. Remanufacturing is one of the highly profitable and sustainable product recovery options. Many Western countries successfully adopted remanufacturing as an alternate source of revenue generation model. But in India, it is still in nascent stage. In this research, we tried to identify the critical factors in the area of “Strategy & Environment” for the viability of remanufacturing business in India. For this, a questionnaire survey was conducted among Indian manufacturing companies and their responses were analyzed. The sample size of the study consists of 72 responses. Afterwards, the identified factors were ranked based on their criticality in initiating remanufacturing activity. The findings may help Indian government and manufacturing firms to frame proper strategy related to environmental aspect of remanufacturing operations in India. PubDate: 2022-04-30 DOI: 10.22515/sustinerejes.v6i1.199 Issue No:Vol. 6, No. 1 (2022)
Authors:Akhmad Zamroni, Wahyu Endah Christiani Putri, Saurina Tua Sagala Pages: 66 - 78 Abstract: The purpose of this study is to evaluate Corporate Social Responsibility (CSR) programs for local communities around mining companies in Kalimantan, Indonesia, based on environmental, economic, and social perspectives. We create evaluation criteria consisting of; six on the environmental perspective, three on the economic perspective, and two on the social perspective. CSR reports are collected from the company website. Each company was given a score based on whether these evaluation criteria were present (1) or absent (0). The evaluation scores of the CSR mining companies programs’ in Kalimantan, Indonesia are high in considering cleaner production, waste reduction, material flow management, and recycling, committed to managing energy and water, developing infrastructures surrounding mining companies, has good corporate ethics, and encourages employees to volunteer for social causes and provides incentives for these activities; medium in committed to following all applicable laws and policies concerning environmental standards and policies, committed to conserving biodiversity, committed to managing sound and vibration from mining activities as well as protecting the air quality around the mining area, and enhancing self-employment options for local communities; low in taking long-term factors into accounts, such as global climate change and other environmental threats, and providing jobs opportunities for local communities. From the evaluations above, access to information, public participation, and transparency in discussing areas of corporate-community issues are all things that mining companies must improve. If there is a lack of congruence between aim, activity, and effect, civil society organizations should frequently criticize mining companies' CSR operations. PubDate: 2022-04-30 DOI: 10.22515/sustinerejes.v6i1.195 Issue No:Vol. 6, No. 1 (2022)
Authors:Ramesh Babu Aremanda, R.K. Singh Pages: 79 - 91 Abstract: Polypropylene plastics are used extensively in packaging and food services for short usage, poses enormous disposal problem and contributing to over 45 % of globally generated plastic waste. Accordingly, the present work is focused on converting waste polypropylene(WPP) disposable cups in to liquid fuels by employing thermal and catalytic pyrolysis processes. Characterization of WPP disposable cups were performed through proximate and ultimate analyses followed by TGA and found that 86% of its mass degrades in a temperature range of 430 – 603 oC. Effect of temperature in the range of 500 – 650 oC on liquid fuel production at a constant heating rate of 15 oC/min were noted in thermal pyrolysis, an optimum and stable liquid fraction of 76 % with a reaction time of 30 min was recorded at 500 oC. For studies on catalytic pyrolysis, activated carbon (AC) was applied from 470 to 530 oC at variable Feed to Catalyst (F/C) ratio of 1- 4, an optimum liquid yield of 74 % was obtained with a residence time of 35 min at 510 oC and F/C of 3:1. Thermo-physical properties of optimal liquid products were comparable with conventional fossil fuels. XRD and SEM analysis of AC catalyst were showed the presence of carbon at 24o and 42o of 2θ-angle with an apparel pore size of 2 µm. PubDate: 2022-04-30 DOI: 10.22515/sustinerejes.v6i1.190 Issue No:Vol. 6, No. 1 (2022)
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