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Waste Management & Research

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https://www.readbyqxmd.com/read/28098023/key-parameters-for-behaviour-related-to-source-separation-of-household-organic-waste-a-case-study-in-hanoi-vietnam
#1
Kosuke Kawai, Luong Thi Mai Huong
Proper management of food waste, a major component of municipal solid waste (MSW), is needed, especially in developing Asian countries where most MSW is disposed of in landfill sites without any pretreatment. Source separation can contribute to solving problems derived from the disposal of food waste. An organic waste source separation and collection programme has been operated in model areas in Hanoi, Vietnam, since 2007. This study proposed three key parameters (participation rate, proper separation rate and proper discharge rate) for behaviour related to source separation of household organic waste, and monitored the progress of the programme based on the physical composition of household waste sampled from 558 households in model programme areas of Hanoi...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28098022/system-dynamics-research-of-remanufacturing-closed-loop-supply-chain-dominated-by-the-third-party
#2
Shidi Miao, Tengfei Wang, Deyun Chen
With the rapid development of the electronic information industry in recent years, electronic products are being updated faster and faster, and e-waste recycling has become a common problem around the world. Firstly, this article contrasts recycling at home and abroad using the predicament of Midea Corp. Based on a closed-loop supply chain with the system dynamics method, a model is constructed and simulated. In this model, the collection point coverage rate is introduced to adjust the e-waste recycling rate dynamically...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28097956/biohydrogen-production-from-used-diapers-evaluation-of-effect-of-temperature-and-substrate-conditioning
#3
P X Sotelo-Navarro, H M Poggi-Varaldo, S J Turpin-Marion, A Vázquez-Morillas, M Beltrán-Villavicencio, R M Espinosa-Valdemar
This research assessed the viability to use disposable diapers as a substrate for the production of biohydrogen, a valuable clean-energy source. The important content of cellulose of disposable diapers indicates that this waste could be an attractive substrate for biofuel production. Two incubation temperatures (35 °C and 55 °C) and three diaper conditioning methods (whole diapers with faeces, urine, and plastics, WD; diapers without plastic components, with urine and faeces, DWP; diapers with urine but without faeces and plastic, MSD) were tested in batch bioreactors...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28097947/evaluating-waste-printed-circuit-boards-recycling-opportunities-and-challenges-a-mini-review
#4
Abhishek Kumar Awasthi, Gabriel Ionut Zlamparet, Xianlai Zeng, Jinhui Li
Rapid generation of waste printed circuit boards has become a very serious issue worldwide. Numerous techniques have been developed in the last decade to resolve the pollution from waste printed circuit boards, and also recover valuable metals from the waste printed circuit boards stream on a large-scale. However, these techniques have their own certain specific drawbacks that need to be rectified properly. In this review article, these recycling technologies are evaluated based on a strength, weaknesses, opportunities and threats analysis...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28097927/assessment-and-comparison-of-three-high-aluminum-fly-ash-utilization-scenarios-in-inner-mongolia-china-using-an-eco-efficiency-indicator
#5
Shuo Yang, Ling Lin, Shao Peng Li, Qiang Li, Xiu Teng Wang, Liang Sun
Utilization of fly ash is of great importance in China in the context of resource and environmental crises. Different fly ash utilization processes are proposed, and some have been practically applied. However, none of these fly ash utilization pathways has been evaluated comprehensively by integrating both environmental and economic perspectives. In this study, three high-aluminum fly ash utilization methods in Mongolia were assessed and compared based on the concept of eco-efficiency. The environmental assessment was conducted in accordance with life-cycle assessment principles, and a monetization-weighting approach was applied to obtain social willingness-to-pay as a reflection of environmental impact...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28097923/co-processing-of-olive-bagasse-with-crude-rapeseed-oil-via-pyrolysis
#6
Suat Uçar, Selhan Karagöz
The co-pyrolysis of olive bagasse with crude rapeseed oil at different blend ratios was investigated at 500ºC in a fixed bed reactor. The effect of olive bagasse to crude rapeseed oil ratio on the product distributions and properties of the pyrolysis products were comparatively investigated. The addition of crude rapeseed oil into olive bagasse in the co-pyrolysis led to formation of upgraded biofuels in terms of liquid yields and properties. While the pyrolysis of olive bagasse produced a liquid yield of 52...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28097922/cascade-use-indicators-for-selected-biopolymers-are-we-aiming-for-the-right-solutions-in-the-design-for-recycling-of-bio-based-polymers
#7
Jakob Hildebrandt, Alberto Bezama, Daniela Thrän
When surveying the trends and criteria for the design for recycling (DfR) of bio-based polymers, priorities appear to lie in energy recovery at the end of the product life of durable products, such as bio-based thermosets. Non-durable products made of thermoplastic polymers exhibit good properties for material recycling. The latter commonly enjoy growing material recycling quotas in countries that enforce a landfill ban. Quantitative and qualitative indicators are needed for characterizing progress in the development towards more recycling friendly bio-based polymers...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28097920/extending-the-life-cycle-of-reverse-osmosis-membranes-a-review
#8
Eduardo Coutinho de Paula, Míriam Cristina Santos Amaral
The reverse osmosis (RO) technology for desalination and demineralization serves the global water crisis context, both technically and economically, and its market is growing. However, RO membranes have a limited life-cycle and are often disposed of in landfills. The impacts caused by the disposal of thousands of tonnes per annum of RO membranes have grown dramatically around the world. Waste prevention should have a high priority and take effect before the end-of-life phase of a product is reached. In this review, a summary is presented of the main advances in the performance of the RO technology and the membrane lifespan...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28093954/inhibitory-effect-of-high-calcium-concentration-on-municipal-solid-waste-leachate-treatment-by-the-activated-sludge-process
#9
Yi Xia, Pin Jing He, Hong Xia Pu, Fan Lü, Li Ming Shao, Hua Zhang
This research focused on the inhibitory effects of Ca on the aerobic biological treatment of landfill leachate containing extremely high Ca concentrations. When the Ca concentration in leachate to be treated was more than 4500 mg l(-1), the total organic carbon removal rate was significantly reduced and the processing time to achieve the same removal efficiency was 1.4 times that in the control treatment without added Ca. In contrast, the total nitrogen and ammonia nitrogen (NH4(+)-N) removal efficiencies were positively related to the Ca concentration, increasing from 65...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28093953/case-study-is-the-catch-all-plastics-bin-useful-in-unlocking-the-hidden-resource-potential-in-the-residual-waste-collection-system
#10
Lukas Kranzinger, Kerstin Schopf, Roland Pomberger, Elisabeth Punesch
Austria's performance in the collection of separated waste is adequate. However, the residual waste still contains substantial amounts of recyclable materials - for example, plastics, paper and board, glass and composite packaging. Plastics (lightweight packaging and similar non-packaging materials) are detected at an average mass content of 13% in residual waste. Despite this huge potential, only 3% of the total amount of residual waste (1,687,000 t y(-1)) is recycled. This implies that most of the recyclable materials contained in the residual waste are destined for thermal recovery and are lost for recycling...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28093951/qualitative-comparison-of-polyethylene-terephthalate-flakes-from-various-collection-systems-in-germany
#11
H Snell, A Nassour, M Nelles
In 2003, a deposit system for one-way packaging was introduced in Germany. Since that time, polyethylene terephthalate beverage packaging is collected through various collection systems, a deposit system, a reusable packaging system and the 'Green Dot' (the dual system) with the yellow bag. The manner of collection had a decisive influence on the quality of the generated recycled materials. The research at hand shows for the first time how the quality of polyethylene terephthalate flakes depends on the type of collection system...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28068885/a-methodical-approach-for-the-assessment-of-waste-sorting-plants
#12
Alexander Feil, Thomas Pretz, Philipp Vitz, Eggo Ulphard Thoden van Velzen
A techno-economical evaluation of the processing result of waste sorting plants should at least provide a realistic assessment of the recovery yields of valuable materials and of the qualities of the obtained products. This practical data is generated by weighing all the output products and sampling these products. Due to the technological complexity of sorting plants, for example, lightweight packaging waste treatments plants and the high expenditures concerning time and costs of sampling with subsequent manual sorting for quality determination, usually only final products undergo such an investigation...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28064843/challenges-and-opportunities-of-biodegradable-plastics-a-mini-review
#13
Maja Rujnić-Sokele, Ana Pilipović
The concept of materials coming from nature with environmental advantages of being biodegradable and/or biobased (often referred to as bioplastics) is very attractive to the industry and to the consumers. Bioplastics already play an important role in the fields of packaging, agriculture, gastronomy, consumer electronics and automotive, but still they have a very low share in the total production of plastics (currently about 1% of the about 300 million tonnes of plastic produced annually). Biodegradable plastics are often perceived as the possible solution for the waste problem, but biodegradability is just an additional feature of the material to be exploited at the end of its life in specific terms, in the specific disposal environment and in a specific time, which is often forgotten...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/27932548/total-control-of-chromium-in-tanneries-thermal-decomposition-of-filtration-cake-from-enzymatic-hydrolysis-of-chrome-shavings
#14
P Kocurek, K Kolomazník, M Bařinová, J Hendrych
This paper deals with the problem of chromium recovery from chrome-tanned waste and thus with reducing the environmental impact of the leather industry. Chrome-tanned waste was transformed by alkaline enzymatic hydrolysis promoted by magnesium oxide into practically chromium-free, commercially applicable collagen hydrolysate and filtration cake containing a high portion of chromium. The crude and magnesium-deprived chromium cakes were subjected to a process of thermal decomposition at 650°C under oxygen-free conditions to reduce the amount of this waste and to study the effect of magnesium removal on the resulting products...
December 8, 2016: Waste Management & Research
https://www.readbyqxmd.com/read/27928062/simulation-of-municipal-solid-waste-degradation-in-aerobic-and-anaerobic-bioreactor-landfills
#15
Bhagwan Shamrao Patil, Agnes Anto C, Devendra Narain Singh
Municipal solid waste generation is huge in growing cities of developing nations such as India, owing to the rapid industrial and population growth. In addition to various methods for treatment and disposal of municipal solid waste (landfills, composting, bio-methanation, incineration and pyrolysis), aerobic/anaerobic bioreactor landfills are gaining popularity for economical and effective disposal of municipal solid waste. However, efficiency of municipal solid waste bioreactor landfills primarily depends on the municipal solid waste decomposition rate, which can be accelerated through monitoring moisture content and temperature by using the frequency domain reflectometry probe and thermocouples, respectively...
December 6, 2016: Waste Management & Research
https://www.readbyqxmd.com/read/27928061/life-cycle-assessment-of-municipal-solid-waste-management-scenarios-on-the-small-island-of-mauritius
#16
Avinash Rajcoomar, Toolseeram Ramjeawon
The aim of this study was to use the life cycle assessment tool to assess, from an environmental point of view, the different possible municipal solid waste (MSW) management scenarios for the island of Mauritius. The scenarios include landfilling with energy recovery (S1), incineration with energy recovery (S2), composting, incineration and landfilling (S3) and finally composting, recycling, incineration and landfilling (S4). The MSW generated in 2010 was selected as the functional unit. Foreground data were collected through surveys and literature...
December 6, 2016: Waste Management & Research
https://www.readbyqxmd.com/read/27928060/gasification-an-alternative-solution-for-energy-recovery-and-utilization-of-vegetable-market-waste
#17
Sunil L Narnaware, Nsl Srivastava, Samir Vahora
Vegetables waste is generally utilized through a bioconversion process or disposed of at municipal landfills, dumping sites or dumped on open land, emitting a foul odor and causing health hazards. The presents study deals with an alternative way to utilize solid vegetable waste through a thermochemical route such as briquetting and gasification for its energy recovery and subsequent power generation. Briquettes of 50 mm diameter were produced from four different types of vegetable waste. The bulk density of briquettes produced was increased 10 to 15 times higher than the density of the dried vegetable waste in loose form...
December 6, 2016: Waste Management & Research
https://www.readbyqxmd.com/read/27909212/black-carbon-emission-reduction-strategies-in-healthcare-industry-for-effective-global-climate-change-management
#18
Emilia Mmbando Raila, David O Anderson
Climate change remains one of the biggest threats to life on earth to date with black carbon (BC) emissions or smoke being the strongest cause after carbon dioxide (CO2). Surprisingly, scientific evidence about black carbon emissions reduction in healthcare settings is sparse. This paper presents new research findings on the reduction of black carbon emissions from an observational study conducted at the UN Peacekeeping Operations (MINUSTAH) in Haiti in 2014. Researchers observed 20 incineration cycles, 30 minutes for each cycle of plastic and cardboard sharps healthcare waste (HCW) containers ranged from 3 to 14...
November 30, 2016: Waste Management & Research
https://www.readbyqxmd.com/read/27909211/application-of-material-flow-analysis-to-municipal-solid-waste-in-maputo-city-mozambique
#19
Leticia Sarmento Dos Muchangos, Akihiro Tokai, Atsuko Hanashima
Understanding waste flows within an urban area is important for identifying the main problems and improvement opportunities for efficient waste management. Assessment tools such as material flow analysis (MFA), an extensively applied method in waste management studies, provide a structured and objective evaluating process to characterize the waste management system best, to identify its shortcomings and to propose suitable strategies. This paper presents the application of MFA to municipal solid waste management (MSWM) in Maputo City, the capital of Mozambique...
November 30, 2016: Waste Management & Research
https://www.readbyqxmd.com/read/27909210/a-full-scale-study-on-thermal-degradation-of-polychlorinated-dibenzo-p-dioxins-and-dibenzofurans-in-municipal-solid-waste-incinerator-fly-ash-and-its-secondary-air-pollution-control-in-china
#20
Xingbao Gao, Bingjing Ji, Dahai Yan, Qifei Huang, Xuemei Zhu
Degradation of polychlorinated dibenzo-p-dioxins and dibenzofurans in municipal solid waste incinerator fly ash is beneficial to its risk control. Fly ash was treated in a full-scale thermal degradation system (capacity 1 t d(-1)) to remove polychlorinated dibenzo-p-dioxins and dibenzofurans. Apart from the confirmation of the polychlorinated dibenzo-p-dioxin and dibenzofuran decomposition efficiency, we focused on two major issues that are the major obstacles for commercialising this decomposition technology in China, desorption and regeneration of dioxins and control of secondary air pollution...
November 30, 2016: Waste Management & Research
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