scholarly journals Preliminary assessment of soil contamination by trace metals in peri-urban municipal landfills in Ibadan, Nigeria

F1000Research ◽  
2017 ◽  
Vol 6 ◽  
pp. 871 ◽  
Author(s):  
Benjamin Oyegbile ◽  
Brian Oyegbile

Background: Soil contamination by trace metals as a result of improper waste management and disposal in Ibadan, Nigeria has been evaluated in this study. Several studies have shown the link between trace metal soil contamination and improper solid waste disposal. Methods: Soil samples were taken from two major landfills in Ibadan, in the south-west of Nigeria, and subjected to laboratory analysis using inductively coupled plasma-optical emission spectrometry (ICP-OES) as part of a wider study to evaluate the waste management practices in the city. Results: The results of this investigation, without taking into account the background values of the trace metals at both landfill sites, showed that the quantified levels of lead at both sites exceeded threshold levels. The quantified values of zinc and copper metals exceeded the threshold levels specified in the Finnish government decree on the assessment of soil contamination and remediation needs, at 1098 mg/kg and 233.20 mg/kg in the Aba-Eku landfill site, and 1205 mg/kg and 476.55 mg/kg in the Lapite landfill site, respectively. This calls for a comprehensive risk assessment. Conclusions: It is hoped that the results of this study will serve as a basis for a wider risk assessment of all landfill sites within the city.                                         

2021 ◽  
Author(s):  
Ramona Mirtorabi

Human life affects the environment in different ways; therefore monitoring human's actions is very important to safeguarding the environment. Studying the human impact on nature is essential to protecting our environment from contaminations. Landfill sites are one of the most influential structures upon nature. Landfills pose a potential danger to the surrounding environment. Therefore they must be supervised for long periods of time to determine their impact. Monitoring the effects of the landfill sites on the surrounding area over a period of time is a useful tool to analyze and understand its effect on the environment. This research work presents a study which uses data analyzed from satellite images for the monitoring of landfill sites. The data collected from satellite images is compared with the data collected from ground measurements. The main goal of this research is to verify the usefulness of remote sensing as a tool for landfill site monitoring. The ground measurement data used in this study is from yearly reports of a monitoring program by the City of Ottawa that are collect by Dillon Limited. The satellite images used are Landsat satellite images downloaded from the U.S. Geological Survey and Earth Resources, and analyzed by ERDAS IMAGINE and ArcMap software. The images are taken from four years: May 1992, August 1998, October 2000, and September 2001. The images are analyzed in terms of Normalized Difference Vegetation Index (NDVI) and Land Surface Temperature (LST). Results from the LST and NDVI value of different years are compared with the results of monitoring program [sic] that has been conducted for the City of Ottawa. Preliminary data analysis of the satellite images reveals that the surface temperature of the landfill site is always higher than the immediate surrounding areas. Any significant changes in LST and NDVI value, especially in the surrounding vegetation areas, are regarded as suspect sites which may be influenced by the development of the landfill site. The result of the comparison between testing and sampling at monitoring wells with satellite image analysis confirms the areas that are more contaminated. The polluted areas show the same locations from both analyses. However, changes at LST and NDVI value analysis could imply the pollution movement earlier than the traditional site sampling monitoring method. These results show the possibility of combining the ground sampling system and satellite images analysis to improve landfill site monitoring.


2021 ◽  
Author(s):  
Ramona Mirtorabi

Human life affects the environment in different ways; therefore monitoring human's actions is very important to safeguarding the environment. Studying the human impact on nature is essential to protecting our environment from contaminations. Landfill sites are one of the most influential structures upon nature. Landfills pose a potential danger to the surrounding environment. Therefore they must be supervised for long periods of time to determine their impact. Monitoring the effects of the landfill sites on the surrounding area over a period of time is a useful tool to analyze and understand its effect on the environment. This research work presents a study which uses data analyzed from satellite images for the monitoring of landfill sites. The data collected from satellite images is compared with the data collected from ground measurements. The main goal of this research is to verify the usefulness of remote sensing as a tool for landfill site monitoring. The ground measurement data used in this study is from yearly reports of a monitoring program by the City of Ottawa that are collect by Dillon Limited. The satellite images used are Landsat satellite images downloaded from the U.S. Geological Survey and Earth Resources, and analyzed by ERDAS IMAGINE and ArcMap software. The images are taken from four years: May 1992, August 1998, October 2000, and September 2001. The images are analyzed in terms of Normalized Difference Vegetation Index (NDVI) and Land Surface Temperature (LST). Results from the LST and NDVI value of different years are compared with the results of monitoring program [sic] that has been conducted for the City of Ottawa. Preliminary data analysis of the satellite images reveals that the surface temperature of the landfill site is always higher than the immediate surrounding areas. Any significant changes in LST and NDVI value, especially in the surrounding vegetation areas, are regarded as suspect sites which may be influenced by the development of the landfill site. The result of the comparison between testing and sampling at monitoring wells with satellite image analysis confirms the areas that are more contaminated. The polluted areas show the same locations from both analyses. However, changes at LST and NDVI value analysis could imply the pollution movement earlier than the traditional site sampling monitoring method. These results show the possibility of combining the ground sampling system and satellite images analysis to improve landfill site monitoring.


2019 ◽  
Vol 4 (1) ◽  
pp. 444
Author(s):  
Rizki Aziz ◽  
Taufiq Ihsan ◽  
Ade Septia Permadani

<p>This study aims to analyze the existing conditions of the solid waste management system in Pasaman Barat Regency and discuss the alternative development of solid waste management systems with a solid waste treatment approach At the regional and municipal scale as a solution to the problem of solid waste management in  Pasaman Barat Regency. From this study it is known that the level of existing solid waste management services was  only 9.13% of total solid waste generated. The problems faced in solid waste management in Pasaman Barat Regency were still high levels of unserved solid waste, inadequate operational facilities and infrastructure for solid waste management, uneven handling of solid waste in service area coverage and the low practice of waste minimization and utilization. The solid waste man-agement system in Pasaman West Regency in the future can apply a combination of solid waste manage-ment approaches at the regional level based on Solid Waste Treatment Station with reduce-reuse-recycle approach (TPS 3R) in domestic areas and treatment at the city level based on Intergrated Solid Waste Treatment Station (TPST) at the landfill site, with the development of the system planned for 15 years, solid waste volume taken into the landfill site can be reduced by 22.40%</p>


2018 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Yamin Astha ◽  
Altim . ◽  
Saiful Alam ◽  
Sutrati Melissa Malik

Abstract: The waste is all kind of things or material/human excreta, animal, vegetation or anything from the result of human activity to fulfill their daily need. This waste may trigger and or cause contamination to the water, land, and air and cause damage to the human environmental. The ultimate waste disposal of the city in The Landfill Site is against some obstacles, physically and nonphysical, such as social, economy, maintenance problems, etc. According the field experience in some area especially in the City of Palu, city waste management in TPA Kawatuna or Kawatuna Landfill Site consistently practice open dumping system with specific awareness on the environmental protection. The problem occur in Kawatuna Landfill Site is none of waste selection criteria. This condition caused a habitant of the scavengers to earn the life for their expanse, but this settlement has negative impact to their healthiness. The contours of landfill site are valley and hilly. This caused a waste collections activity from the waste employee throw away randomly to the valley of landfill site area and caused wider landfill area. In addition, another wider valley becomes the garbage collection area and causes destruction to the land structure. As a result, the qualitative descriptive method of this research concludes applicable waste management system for the Kawatuna Landfill Site and factors that influences the waste management system. Effort and good cooperation are necessary for a good waste management practice in Kawatuna Landfill Site. This practice starts from each of us where the waste is a requirement that should minimize together. Application of 4R (Reduce, Replace, Reuse and Recycle) is the first step in maximizing the waste management system of Kawatuna Landfill Site. All of this effort certainly requires a support from human resources, facility and infrastructure, social participation and government regulation. Keywords: Waste, Waste Management, Kawatuna Landfill Abstrak: Sampah ialah semua jenis benda atau barang bangunan/kotoran manusia, hewan atau tumbuh-tumbuhan atau yang berasal dari aktivitas kehidupan manusia dalam memenuhi kebutuhan hidupnya yang dapat menimbulkan dan atau mengakibatkan pengotoran terhadap air, tanah dan udara sehingga dapat menimbulkan pengrusakan lingkungan hidup manusia. Penampungan akhir sampah kota dilakukan di Tempat Pembuangan Akhir (TPA) mengalami berbagai macam kendala baik fisik maupun non fisik, seperti masalah sosial, ekonomi, pemeliharaan dan lain–lain. Dari berbagai kenyataan yang ada di lapangan, di berbagai daerah, khususnya di Kota Palu, pengelolaan sampah perkotaan di TPA Kawatuna masih menggunakan sistem pembuangan terbuka (open dumping), dimana sistem ini kurang memperhatikan aspek perlindungan lingkungan. Masalah yang timbul di TPA Kawatuna yakni : belum ada pengelolaan untuk pemilahan jenis sampah, kondisi ini mengakibatkan munculnya permukiman para pemulung yang mencari nafkah dengan memilah sampah yang dapat memberikan pendapatan bagi mereka, namun keberadaan permukiman mereka dapat memberikan pengaruh negatif bagi kesehatan mereka. Dan kondisi TPA yang berkontur yaitu lembah dan perbukitan menjadikan sampah yang telah dikumpulkan oleh petugas dibuang sembarangan pada lembah di daerah TPA yang mengakibatkan bertambah luasnya daratan sampah, hal lain lembah yang cukup besar dijadikan sebagai penampung sampah yang dapat menyebabkan rusaknya struktur tanah. Olehnya penyelesaian penelitian dengan menggunakan metode deskriptif kualitatif didapatkan sistem pengelolaan sampah yang sesuai diterapkan di TPA Kawatuna dan faktor – faktor yang mempengaruhi sistem pengelolaan sampah. Diperlukan usaha dan kerjasama yang baik agar pengolahan sampah di TPA Kawatuna dapat berjalan dengan baik. Hal tersebut dimulai dari diri kita masing – masing bahwa sampah merupakan suatu kebutuhan yang harus kita minimalisasikan bersama – sama. Penerapan 4R yakni (Reduce, Replace, Reuse and Recycle) merupakan langkah awal agar sistem pengelolaan sampah di TPA Kawatuna berjalan maksimal. Tentunya semua itu perlu didukung dengan sumber daya manusia, sarana prasarana, partisipasi masyarakat dan peraturan pemerintah. Kata Kunci: Sampah, Pengelolaan Sampah, TPA Kawatuna


2016 ◽  
Vol 7 (1) ◽  
pp. 53-59 ◽  
Author(s):  
Rethabile Sehlabi ◽  
Tracey Morton McKay

Typical of most developing world cities, the City of Johannesburg, South Africa, faces many waste management challenges. One of which is a lack of awareness of, and compliance with, waste management legislation, recycling and composting by the general public. Thus, the city has to deal with high levels of solid waste generation and subsequent pressure on its landfill sites. The city also has to adhere to various pieces of waste management legislation, with recycling and composting being two essential elements thereof. This study outlines a commercial composting initiative designed by the municipality of Johannesburg to redirect organic green waste from landfill sites to a compost production plant. The study found that although the Panorama Commercial Composting Plant is reducing the amount of solid organic waste disposed of in the city’s landfills, better planning could increase the amount of green organic waste thus diverted. Furthermore, the adoption of a centralized, mechanized system has significantly hampered the generation of employment opportunities, while simultaneously forcing operational costs up. Finally, the lack of a coherent marketing and branding strategy has restricted compost sales. Thus, the Panorama Commercial Composting Plant is currently not recouping its costs nor generating the number of work opportunities it could. Some recommendations to rectify this are then made


2015 ◽  
Vol 16 (4) ◽  
pp. 320-329 ◽  
Author(s):  
Ondrej Stopka ◽  
Ivana Simková

Abstract Nowadays, waste logistics is a relevant element within the worldwide logistics system. This paper is focused on the proposal of the appropriate model of landfill site for disposal of municipal waste. This issue refers to waste logistics in urban areas. In this regard, three different alternative models of landfill sites are considered. Landfill site model can significantly influence the waste management productivity and effectiveness of the enterprise. In the paper, one of the decision-making problem methods is utilized. This particular method enables to assess each model of landfill site in relation to each of the specified criterion and order the models according to the achieved results.


2021 ◽  
Author(s):  
Tutun Hazra

Abstract Durgapur, an industrial city, is the second and third-largest city in West Bengal in terms of population and area respectively. The city is suffering from an enormous generation of waste and improper waste management. The wastes are dumped in an unscientific and unplanned way, negatively impacting the environment and public health. Hence, the National Green Tribunal has advised the city planners to find new landfill sites following the Central Pollution Control Board's guidance. This paper focuses on the new landfill site selection of Durgapur city using the Multi-criteria Decision Making (MCDM) methods with Geographic Information System (GIS). The methodologies used for the site selection processes are GIS (for mapping the 14 criteria and overlay analysis) and MCDM methods: Analytical Hierarchy Process, Straight Rank Sum Method, and Ratio Scale Weighting Method (to derive the weights). Finally, the five landfill sites are selected after calculating the change detection.


2021 ◽  
Author(s):  
Mohd Mohsin ◽  
Sk Ajim Ali ◽  
Syed Kausar Shamim ◽  
Ateeque Ahmad

Abstract Disposal of collected waste is the least preferable way of sustainable solid waste management. But most of the cities in developing nations prefer to use open dumping in an inappropriate and non-scientific way, causing negative impacts on the environment as well as human health. This study offers a novel approach for scientific landfill site selection and sustainable waste management in Aligarh city, India. This could be possible through relevant data collection, selection of suitable models for criterion weighting, and model validation. In order to prepare a suitable landfill site selection map, a GIS-based ensemble FAHP-SVM and FAHP-RF model was implemented. Considering the previous studies and the characteristics and the study area, a total of eighteen thematic layers (decision criteria) were selected. The result reveals that land value, nearness to residential roads, nearness to hospitals and clinics, distance from waste bins, and NDBI having a fuzzy weight of > 0.10, indicates significant factors; whereas land elevation, land slope, surface temperature, soil moisture index, NDVI and urban classification having a fuzzy weight of 0, indicates these criteria have no importance for the present study. The result further reveals that FAHP-RF with an AUC value of 0.9182 is the more accurate model in comparison to FAHP-SVM. According to the final result of weight-based overlay, a total of seven potential landfill sites were identified, out of which three sites were determined as most suitable by considering current land cover, environmental and economic concerns, and public opinions. This study proposed a zonal division model based on the location of suitable landfill sites for sustainable waste management in the study area. The findings of this study may provide a guideline to the decision-makers and planners for optimal landfill site selection in other cities of developing countries.


2015 ◽  
Vol 4 (1) ◽  
pp. 1-15 ◽  
Author(s):  
M. Ali Ashraf ◽  
Md. Rezuanul Islam ◽  
Sarfaraz Gani Adnan

 Urban solid waste management is a serious environmental issue confronting the cities in developing countries like Bangladesh. Apathy towards the problem, inadequacy of field level information and data, and resource constraints may be blamed for the dismal situation of solid waste management often visible in our cities. The most common problems associated with the absence of sustainable solid waste management practice include diseases transmission, odour nuisance, atmospheric and water pollution, visual blight, fire hazards and economic losses. In the three major cities of Bangladesh, Dhaka, Chittagong & Khulna, per capita production of solid waste is around 0.4kg /capita / day, but only a fraction of this waste is carried to the final disposal site. A recent study on Municipal Solid Waste Management found that waste generated in Chittagong was 0.352kg/cap/day. Considering per capita generation of solid waste as 0.352kg to 0.4kg per capita per day, for a population of 25, 92,459 distributed within the 41 wards of the city (BBS, 2011), total solid waste generated in Chittagong will be around 913 tons to 1037 tons per day in 2012. Currently, Chittagong City Corporation (CCC) has only two dumping yards: one at Ananda Bazar, Halishahar at the mid western part of the city and the other at Arefin Nagar, Pahartali at the northern tip of the city. None of these sites are sanitary landfill. Considering the city area of 168 sq. kms, only two dumping sites are not sufficient to cater to the requirement of the city. Long distances between the collection points and the disposal site are responsible for inefficient utilization of the CCC trucks and the resulting increase in the haulage time that eventually increases the costs of collection and disposal. This study utilized Geographic Information System (GIS) and Multi-Criteria Decision Method (MCDM) for the identification and selection of appropriate landfill sites within the city of Chittagong. Thirteen sites were identified initially. Out of these sites four were found to be most appropriate and suitable for use as landfill. DOI: http://dx.doi.org/10.3126/ije.v4i1.12174International Journal of Environment Volume-4, Issue-1, Dec-Feb 2014/15, page: 1-15  


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