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Waste Management & Research

Jenny Carolina Rosero-Henao, Beatriz Egerland Bueno, Raquel Souza, Rogers Ribeiro, Alessandra Lopes de Oliveira, Catarina Abdalla Gomide, Tamara Maria Gomes, Giovana Tommaso
Vegetable crop residues, such as sugarcane bagasse (SCB), despite their limited biodegradability, are potential materials for anaerobic processes because of their low cost, high availability, and sugar content. The difficulty of biodegrading this type of material is primarily related to its chemical composition and to the complex interactions between its compounds (cellulose, hemicelluloses, and lignin). Thus, the following supercritical and near critical carbon dioxide (CO2 ) pre-treatments were evaluated with and without the addition of sodium hydroxide (NaOH): (i) 40°C/70 kgf·cm-2 ; (ii) 60°C/200 kgf·cm-2 ; and (iii) 80°C/200 kgf·cm-2 , aiming to enhance the anaerobic biodegradability of SCB...
November 9, 2018: Waste Management & Research
Jeonghee Yun, Hyekyeng Jung, Hyungjoo Choi, Kyung-Cheol Oh, Jun-Min Jeon, Hee Wook Ryu, Kyung-Suk Cho
The performance of a biocomplex textile prototype was evaluated as an alternative daily cover at an operational landfill site to mitigate odors and methane. The biocomplex textile prototype consisted of two layers of nonwoven fabric and biocarrier immobilized microorganisms and showed excellent removal of odors and methane compared to landfill cover soil. The complex odor intensity (odor dilution ratio (ODR)) on the surface of landfill cover soil was 1,000-10,000 ODR (average of 4,204 ODR), whereas it was 5-250 ODR (average of 55 ODR) on the surface of biocomplex textile...
October 31, 2018: Waste Management & Research
Sebastian Stefaniak, Ewa Kmiecik, Ewa Miszczak, Franciszek Plewa, Irena Twardowska
Efforts directed to reduction of greenhouse gas emissions have led to the introduction of new firing/co-firing technologies and alternative fuels in the coal-based power industry. This has resulted in the formation of combustion products with new properties that can affect the reuse of these wastes and/or pose a hazard to the environment. One of the power-plant fly ash (FA) reuse options is its application as a solidifying dense mixture with water for backfilling mine workings or in engineering constructions...
October 30, 2018: Waste Management & Research
Renata Dagiliūtė, Deividas Zabulionis, Gintarė Sujetovienė, Jūratė Žaltauskaitė
Waste of electrical and electronic equipment (WEEE) has gained significant attention recently because of increasing consumption and related environmental impacts. This work focuses on Lithuania and analyses the trends of WEEE generation and management during the period 2008-2015. Attitudes and behaviour of students and pupils (main future consumers) regarding WEEE are also determined in this work. The analysis shows that the generation and collection of WEEE in Lithuania have been on the rise since the global economic crisis...
October 29, 2018: Waste Management & Research
Cansu Demir, Ülkü Yetiş, Kahraman Ünlü
Thermal power plants are of great environmental importance in terms of the huge amounts of wastes that they produce. Although there are process-wise differences among these energy production systems, they all depend on the logic of burning out a fuel and obtaining thermal energy to rotate the turbines. Depending on the process modification and the type of fuel burned, the wastes produced in each step of the overall process may change. In this study, the most expected process and non-process wastes stemming from different power generation processes have been identified and given their European Waste Codes...
October 25, 2018: Waste Management & Research
Luke Makarichi, Rithy Kan, Warangkana Jutidamrongphan, Kua-Anan Techato
The recovery of energy from municipal solid waste (MSW) has gained popularity in many industrialized countries, but its adoption in economically developing countries, especially in Africa, has been slow. While capital investments and technical requirements for waste-to-energy (WtE) systems are among the most important causes for this slow adoption, the unavailability of data on the thermochemical quality of MSW as a potential feedstock for energy recovery is also a limiting factor. In this paper, Harare, a typical African city, was selected as a case study...
October 25, 2018: Waste Management & Research
Sarp Çelebi, Ülkü Yetiş, Kahraman Ünlü
The recovery of spent or waste lead acid batteries is important both for the management of lead input to the environment and to meet the lead demand of the market in a more energy and cost effective manner than primary production. As an important producer of lead acid batteries for the Middle Eastern and Eastern European market, Turkey seems to meet 22%-52% of its total lead demand by waste lead acid battery recovery. In this study, the wastes from Turkish waste lead acid battery recovery plants are identified and management strategies that are both technically sufficient and economically feasible for each of these wastes are complied...
October 25, 2018: Waste Management & Research
Lorena M Fortuna, Marco J Castaldi
In 2015, the city of New York (NYC) introduced a plan to reduce the volume of collected solid waste by 90% by 2030 and envisioned the expansion of reuse opportunities as one of its main drivers. The assessment of the contributions from reuse initiatives to the advancement of waste prevention and waste reduction goals requires a quantitative understanding of the scope of reuse activities. The high population density in NYC and well-organised collection efforts by The City of New York Department of Sanitation (DSNY) (DSNY) have resulted in a structure that enables the informal sector to readily contribute and access the reuse market...
October 18, 2018: Waste Management & Research
Elham Mofid-Nakhaee, Farnaz Barzinpour
Municipal solid waste collection is an increasingly difficult task and has the highest operation cost in the solid waste management process; thus, finding the optimal routes for the waste collection is a most tactically significant decision that should be focused on due to the population growth. This research investigated the multi-compartment capacitated arc routing problem with intermediate facilities (MCCARPIF) in the context of solid waste collection. This problem has been researched rarely in the past in the real world...
October 15, 2018: Waste Management & Research
Danijela Tadić, Aleksandar Đorđević, Aleksandar Aleksić, Snežana Nestić
In the sense of contemporary industrial challenges, it may be said that many issues in the field of recycling may be analysed. In this paper, the model for choosing locations for construction of recycling centres equipped with new technology is proposed. The considered problem may be stated as a two-objective optimization problem, if the optimization criteria are presented as total distance and the overall suitability index sum. The relative importance and values of possible locations' attributes are described by pre-defined linguistic expressions, and modelled by interval triangular type-2 fuzzy numbers...
October 11, 2018: Waste Management & Research
Patricia K Mogomotsi, Goemeone Ej Mogomotsi, Nametso D Phonchi
Following the discovery of diamonds in Botswana, there was widespread use of plastic bags, possibly as a positive reaction to the change in economic and financial landscape of the country. The excessive use of plastic bags by consumers throughout Botswana, however, imposed several negative externalities to the environment and consequently to livelihoods through their effects on wildlife and livestock. The government of Botswana, in an effort to mitigate the negative impacts of plastic bags on the environment, introduced both a ban of plastics with less than minimum thickness and a plastic bag levy...
October 4, 2018: Waste Management & Research
Ismail Cem Kantarli, Stylianos D Stefanidis, Konstantinos G Kalogiannis, Angelos A Lappas
The objective of this study was to examine the potential of poultry wastes to be used as feedstock in non-catalytic and catalytic fast pyrolysis processes, which is a continuation of our previous research on their conversion into biofuel via slow pyrolysis and hydrothermal conversion. Both poultry meal and poultry litter were examined, initially in a fixed bed bench-scale reactor using ZSM-5 and MgO as catalysts. Pyrolysis of poultry meal yielded high amounts of bio-oil, while pyrolysis of poultry litter yielded high amounts of solid residue owing to its high ash content...
September 25, 2018: Waste Management & Research
Fan Pengxian, Wang Jiabo, Shi Yehui, Wang Derong, Tan Jinzhong, Dong Lu
Analogue materials are widely used to simulate prototype rocks in geo-mechanical model tests. The large amounts of solid waste generated by a large-scale model test has always posed problems for studies. The re-use of analogue materials can significantly reduce the cost of geo-mechanical model tests and the resulting environmental problems. However, despite the environmental and economic benefits, there have been few reports on the re-use of analogue materials. In this work, a recycling method for a resin-based analogue material is studied experimentally...
September 25, 2018: Waste Management & Research
Irene García-Díaz, Francisco José Alguacil, Félix Antonio López
This work proposes a method for the recovery of tin and silver from wave soldering dross produced during the manufacture of printed circuit boards. Samples of wave soldering dross were first subjected to carbothermic reduction to obtain an ingot containing the above metals plus other elements. This ingot was then subjected to electrorefining at different densities of electrical current, electrolyte flow rate, and cathode-anode separation distance, to determine the optimum conditions for recovering pure tin...
September 19, 2018: Waste Management & Research
C Marzo, A B Díaz, I Caro, A Blandino
Nowadays, significant amounts of agro-industrial wastes are discarded by industries; however, they represent interesting raw materials for the production of high-added value products. In this regard, orange peels (ORA) and exhausted sugar beet cossettes (ESBC) have turned out to be promising raw materials for hydrolytic enzymes production by solid state fermentation (SSF) and also a source of sugars which could be fermented to different high-added value products. The maximum activities of xylanase and exo-polygalacturonase (exo-PG) measured in the enzymatic extracts obtained after the SSF of ORA were 31,000 U·kg-1 and 17,600 U·kg-1 , respectively; while for ESBC the maximum values reached were 35,000 U·kg-1 and 28,000 U·kg-1 , respectively...
September 17, 2018: Waste Management & Research
F R Beltrán, I Barrio, V Lorenzo, B Del Río, J Martínez Urreaga, M U de la Orden
Poly(lactic acid) (PLA) is a biobased polymer that represents one of the most interesting alternatives to fossil-fuel based polymers in food packaging applications. Most of the PLA used in food packaging is used only once and then discarded, even though the PLA types used in packaging have good properties and stability. Therefore, it seems reasonable to consider the possibility of recycling the used polymer through a mechanical recycling process. The main aims of this work are to study the effect of the mechanical recycling on the properties of PLA and the usefulness of different upgrading methods to obtain recycled PLA with improved properties...
September 11, 2018: Waste Management & Research
Ankur Goyal, Rajat Agrawal, Rakesh Kumar Chokhani, Chiraranjan Saha
The growth in manufacturing activities for economic development is putting a lot of pressure on the environment. One such impact is due to generation of waste from hazardous material. The best way for hazardous waste management is either elimination or substitution with non-hazardous material. The case study in the present paper is focused on the problem of hazardous waste reduction in absence of non-hazardous substitution. In absence of any non-hazardous substitute of hazardous material, waste generation can be reduced using improvement techniques such as Kaizen to improve the manufacturing process...
September 10, 2018: Waste Management & Research
Jiajia Wang, Lixia Zheng, Jinhui Li
The world's oceans are suffering a constant and unprecedented accumulation of emerging plastic contaminants known as microplastics with a particle diameter smaller than 5mm. Microplastics exhibit a widespread distribution in various habitats from land to the oceans, and even reach the most remote regions - the deep sea and the polar, receiving attention exponentially in the past few years. Owing to their small size, marine species risk getting ingested and entangled in microplastics, causing suffocation, starvation, physical trauma or damage from chemicals, which poses vast and growing threats to biodiversity and the food web...
August 22, 2018: Waste Management & Research
Kerstin H Wyssusek, Maggie T Keys, André A J van Zundert
Healthcare waste is a rampant issue in Australian hospitals. The operating room (OR) contributes disproportionately to total hospital waste. There has been considerable research in the literature concentrating on strategies to improve OR and hospital waste accumulation, in an attempt to provide guidance and direction on how to reduce the healthcare ecological footprint. We reviewed the literature for leading greening initiatives currently utilised in the OR in Australia and internationally. This narrative literature review focuses on the trend of OR greening initiatives over the last 25 years, comparing different innovative approaches, the successes and setbacks, and the financial implications of initiatives...
August 22, 2018: Waste Management & Research
Iraklis Panagiotakis, Dimitris Dermatas
No abstract text is available yet for this article.
November 2018: Waste Management & Research
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