Due to concern about diminishing landfill space, the City of Denton contracted a municipal solid waste characterization study in 1999 that would identify materials for diversion. This paper describes the results of 5 1-week waste sorting events, a scale-house analysis, a recycling participation study, a recycler profile and a similar city study. The results of the characterization studies suggest that at least 50% of each waste stream is recyclable or divertible though paper products accounted for no more than 45% by weight of any waste stream. Curbside recycling participation rate was 71% during the 6-week study period though the average weekly set-out rate was 37%. Recycling participation rates varied significantly by zip code and by home value categories but not by gender. Denton is fairly progressive in its waste management approach when compared to demographically similar cities on a 15-question assessment though recommendations for improvement have been identified.

Annually, approximately 150 million metric tonnes of food goes to waste in the U.S., potentially causing economic loss and environmental pollution. Fermentation of food waste to produce acetone, butanol and ethanol (ABE) via fermentation has the potential to valorize food waste by producing value-added chemicals. However, the composition of food wastes from different sources vary, which affects ABE fermentation performance and hinders the commercialization of food waste fermentation. The objective of this study is to investigate the compositional variation of food waste collected weekly for 16 weeks (a total of sixteen samples) and determine how this variation affects ABE fermentation performance. Samples collected from Southgate Center, a food processing facility operated by Virginia Tech Dining Services, was characterized for use as a feedstock for ABE fermentation. Water, sugar, starch, fiber, protein, fat and ash concentrations in each of food waste samples were determined. ABE fermentation of these wastes was performed using Clostridium beijerinckii via batch fermentations. Correlations of ABE and butanol yields with the individual components of food waste composition were performed to better understand which components are key to ABE fermentation. Overall, this study demonstrated the feasibility of using food waste as a viable feedstock for ABE fermentation and investigated the effect of variation of food waste composition on the ABE fermentation performance. In the 16 collected samples, each major compositional attribute exhibited high variability. The concentration of total soluble sugar, defined as glucose, fructose, sucrose for the purposes of this experiment, ranged from 0.5 to 53.5% (dry basis) among different food waste samples. The concentration ranges of total starch, neutral detergent fiber (NDF), crude protein, crude fat and ash were 0 to 23.4% (dry basis), 0.6 to 25.8%, 5.5 to 21.2%, 0.1 to 37.9%, 1.4 to 13.7%, respectively. The high variation of food waste composition resulted in a high variation of ABE yield when these food wastes were subjected to fermentation by C. beijerinckii. The total ABE concentration following fermentation ranged between 6.9 to 17.0 g/L with an average value of 13.2 g/L. ABE and butanol concentrations are positively correlated with starch and equivalent glucose, i.e., the sum of initial free glucose and glucose that could be theoretically hydrolyzed from starch and sucrose during fermentation, but is negatively correlated with NDF concentrations. / Master of Science in Life Sciences / Nearly 40% of food in the U.S. goes to waste, causing a huge amount of economic loss and environmental pollution. Use of microorganisms to ferment food waste is a viable way to mitigate many of the issues associated with food waste. Put simply, fermentation is a biological process in which an organic substrate, such as food waste, is consumed and a more valuable product is produced. In this study, different food wastes were collected from the campus food processing center weekly for 16 weeks. Water, sugars, starch, fiber, protein, fat and ash contents of the collected food wastes were determined. Fermentation of these food wastes were conducted using a microorganism called Clostridium beijerinckii. The results showed that there was a high variation amongst the composition of the food waste samples. The concentration of total soluble sugar (glucose, fructose, sucrose) ranged from 0.5 to 53.5% (dry basis) among different food waste samples. The concentration ranges of total starch, neutral detergent fiber (NDF), crude protein, crude fat and ash were 0 to 23.4% (dry basis), 0.6 to 25.8%, 5.5 to 21.2%, 0.1 to 37.9%, 1.4 to 13.7%, respectively. The variation of food waste composition also led to different fermentation yields. It was also found that a higher glucose content in food waste results in a higher fermentation product yield; however, a higher fiber content in food waste results in a lower fermentation product yield.

Yes / The concept of sustainable development implies that social, economic and environmental objectives should be delivered together, and that they can be achieved through enhanced community participation. The concept of social capital indicates how these objectives interrelate, implying that community involvement enhances trust and reciprocity, thus promoting better governance and greater prosperity. This paper draws on a survey of Community Waste Projects to explore how these concepts can inform investigations of community projects. It argues that the concepts provide useful guides to research and debate, but highlights the resource requirements of empirically confirming the claims of the social capital perspective.

In many countries they set targets formunicipal waste reuse and for reduction of the amount landfilled. To develop effective strategies requires knowledge of reliable information on the composition of municipal waste. At present, however, in most European countries and the rest of theworld use different methods for the analysis of the composition of waste, which vary considerably, not only in scale but also a focus. As a part of this work has been carried out research on total waste production in households with anemphasis on organic waste, using new research methods. It was determined during production regard less of any subsequent disposal method. This research was supplemented by questionnaire surfy focused on household waste management. There search results showed that the average proportion of individual components in household waste is 25% for paper, 7% for plastic, 12%for glass, 2% for metal, 28% for organic waste, 10% for animal waste, another 16% of waste and 1% for.hazardous waste . It was also not found that the production of individual components of household waste differed significantly between various types of dwelling. They have not been demonstrated a signifiant relationship between waste production and number of members in the household. There search results show that, if...

Baigiamajame magistro darbe nagrinėjamos atliekų susidarymo, surinkimo ir tvarkymo problemos ir tikslai. Pasinaudojant teoriniais teiginiais ir prielaidomis išanalizuota atliekų situacija Lietuvoje ir užsienio šalių patirtis šioje srityje. Išnagrinėti pagrindiniai principai. Šiame darbe apžvelgta atliekų susidarymo, surinkimo ir tvarkymo situacija, kuri yra viena svarbiausių aplinkosaugos problemų, atsiradusi vos įsikūrus pirmosioms gyvenvietėms ir tapusi ypač aktuali mūsų šimtmetyje. Atliekų tvarkymas reikalauja daug lėšų, tačiau žiūrint į tolimesnę ateitį pigiau tvarkyti atliekas šiandien, negu ateityje likviduoti taršos padarinius. Išanalizavus teorinius ir praktinius aspektus apie atliekų surinkimo kokybę Vilniaus mieste pateikiamos baigiamojo darbo išvados ir siūlymai. / This final master work is on the subject of waste product, it formation, collection and management. According to theoretic theses there was made particular analysis of waste situation in Lithuania including foreign countries experience on this goal. As waste is one of the most important this century problem of environment control problems in this work are pending the main principles of waste treatment, like waste collection, waste disposal, management situation. Waste management needs big issues, now after all detailed analysis I can affirm that it is better and cheaper treat waste now nor liquidate big pollution after- effect in the near future.

The main objective of my dissertation was to ascertain the major trends and effectiveness of municipal waste management of the waste that is produced by individual municipalities with extended powers in the region of Vysočina. I mainly focus on the expenses related to the waste management that are paid from municipal budgets.

abstract: During the months from June to November 2012, the city of Bangalore was faced with a serious solid waste management (SWM) crisis. In the wake of the upheaval, the state court declared source segregation to be mandatory. Yet, while the legislation was clear, the pathway towards a course of action for the transition was not clear and hence, Bangalore was stuck in a state of limbo. The objectives for this thesis spiraled organically from this crisis. The first objective was to examine the gaps in Bangalore's transition to a more sustainable SWM system. Six particular gaps were identified, which in essence, were opportunities to re-shape the system. The gaps identified included: conflicting political agendas, the exclusion of some key actors, and lack of adequate attention to cultural aspects, provision of appropriate incentives, protection of livelihoods and promotion of innovation. Opportunities were found in better incentivization of sustainable SWM goals, protecting livelihoods that depend on waste, enhancing innovation and endorsing local, context based SWM solutions. Building on this understanding of gaps, the second objective was to explore an innovative, local, bottom-up waste-management model called the Vellore Zero Waste Model, and assess its applicability to Bangalore. The adaptability of the model depended on several factors such as, willingness of actors to redefine their roles and change functions, ability of the municipality to assure quality and oversight, willingness of citizen to source segregate, and most importantly, the political will and collective action needed to ensure and sustain the transition. The role of communication as a vital component to facilitate productive stakeholder engagement and to promote role change was evident. Therefore, the third objective of the study was to explore how interpersonal competencies and communication strategies could be used as a tool to facilitate stakeholder engagement and encourage collective action. In addressing these objectives, India was compared with Austria because Austria is often cited as having some of the best SWM practices in the world and has high recycling rates to show for its reputation. / Dissertation/Thesis / M.S. Sustainability 2013

Thesis (MPH.) -- University of Limpopo, 2016. / Background: Health care workers produce various types of waste in the course of rendering health care services. Each classification of waste must be disposed according to the prescribed guidelines. Improper disposal of waste may pose a danger to employees, patients and the environment. Health care workers must have adequate knowledge on disposal of medical waste. This study was therefore done to determine the knowledge and practices of health care workers on medical waste disposal. Objectives: This study aims to determine the knowledge and practices of health care workers on medical waste disposal at a hospital in the Mpumalanga Province in South Africa. Methods: A quantitative cross-sectional research approach was used at a regional hospital for the Mpumalanga Province in the Bushbuckridge Municipality under the Ehlanzeni District. The study respondents included professional nurses, enrolled nurses, enrolled nursing assistants, medical doctors, dental health and allied health staff. Data were collected through self-administered questionnaires analysed using International Business Management Statistical Package for Social Sciences 22 (IBM SPSS 22). Results: The results show that a high percentage of health care workers did not have adequate knowledge regarding disposal of medical waste but disposed medical waste appropriately. The results further show that knowledge and practice of health care workers had no association with age, gender and years of experience. There is an association between professional category and knowledge and practice of healthcare workers. Conclusion: Disposal of medical waste is the responsibility of all health care workers. There should be regular training of all categories of health care workers to improve their knowledge on disposal of medical waste and minimise the risks associated with improper waste management. This will further increase compliance with the guidelines of disposal of medical waste. Key words: Health care workers, medical waste, knowledge, practice, disposal

No description available.

In order to address the growing waste concerns facing South Africa, the Department of Environmental Affairs (DEA) published the National Waste Management Strategy in 2012. The ultimate aim of the strategy is to effect the realisation of the objectives of the National Environmental Management Waste Act (NEMWA). The NEMWA is a sector environmental law based on the waste management hierarchy and its provisions apply to waste management activities in all three government spheres amongst others. The NWMS provides for eight distinct goals with accompanying targets to be met by 2016. Some of these goals and targets speak directly to the solid waste management mandate of local government. Concerns about the capacity of municipalities to see the execution of this mandate however, raise questions about the likelihood of some NWMS goals and targets being met by 2016. The North West Province serves as a case in point where recent reports by the office of the Auditor General have highlighted significant non-compliance in local government with the provisions of the existing waste law and policy framework of South Africa. It appears form these reports that a number of performance gaps and capacity constraints exist as far as it concerns municipal solid waste management. Against this back ground the study questions the governance strategies necessary within the municipalities of the North West Province to: a) address the existing performance gaps and capacity constraints and b) progressively move towards meeting the NWMS goals and targets as far as it concerns solid waste management. The study will explore the objectives, goals and targets of the NWMS against the background of the National Environmental Management Act (NEMA) and NEMWA, with a specific focus on solid waste management. The study will further review the documented performance gaps and capacity constraints as a far as it concerns solid waste management in municipalities in the North West province, specifically. / M. Environmental Management, North-West University, Potchefstroom Campus, 2014