Thesis (Ph. D.)--Michigan State University. Dept. of Agricultural Economics, 2008. / Title from PDF t.p. (viewed July 31, 2009). Includes bibliographical references. Also issued in print.

A key dimension to improving urban economic and environmental sustainability is the efficient use of resources through recycling. A thriving recycling system requires not only effective institutional policies and community-wide diversion efforts, but also a competent local and regional recycling industry. Although the recycling industry has traditionally been recognized as a local service and fringe industry, it has noticeably transformed into an integral segment of industrial production systems as manufacturers have increasingly begun to adopt the principle of extended producer responsibility. Despite such changes, urban and regional theory and planning research has largely disregarded the industrial aspect of recycling, contributing to the dearth of information about the organizational and spatial patterns of the recycling industry and the impact of the establishment of recycling systems on local and regional scales. Given the knowledge gap, this dissertation addresses two questions: 1) What is the logic of the industry organization and spatial pattern of recycling industry in different institutional contexts? and 2) How is the economic and environmental impact of recycling systems determined in cases of construction and demolition waste recycling and waste carpet recycling? To answer the first question, this research develops a theoretical model that explains how recycling industrial activities are spatially distributed in light of institutional and organizational theories. The theoretical model characterizes organizational decisions pertaining to recycling functions and suggests spatial patterns of recycling systems. With respect to the second question, this research constructs a regional environmental input-output model on the metropolitan scale. It estimates regionalized energy use coefficients and greenhouse gas emission coefficients using various sources of data mainly compiled from the Manufacturing Energy Consumption Survey 2006, the State Energy Consumption Estimates, and the Commodity Flow Survey 2007. Based on regional input-output tables coupled with the regionalized environmental coefficients, this research quantifies, through simulations, the net economic and environmental impact of a localized construction and demolition waste recycling system in the San Francisco metropolitan area and regional carpet recycling systems in the Atlanta and Seattle metropolitan areas. Results of the simulations reveal that 1) the localized construction and demolition waste recycling system provides moderate economic benefits because of the limited job creation potential of mechanized recycling processes and yields relatively small environmental benefits with respect to the total weight processed; 2) wider adoption of the deconstruction technique expands job opportunities, increases energy savings, and reduces greenhouse gas emissions during the course of construction and demolition waste recycling; 3) regional-scale waste carpet recycling systems, in particular recycled nylon 6 production, create sizable new job opportunities and provides environmental benefits of energy savings and greenhouse gas emission reduction despite the long-distance transportation of waste carpet. These results suggest that policies that promote recycling industrial activities can significantly contribute to the economic and environmental sustainability of metropolitan areas.

M.Tech. (Architectural Technology) / This project is an architectural response to a setting shared by an active open cast platinum mine and the surrounding rural traditional subsistence farming communities located in the Mogalakwena municipality, Limpopo Province. The area is characterised by its mine waste landscape and large open cast pits, all of which are remnants of the process of open cast mining. The Mogalakwena communities’ economic livelihood is largely dependent on agricultural land. This land is reducing, partly due to the establishment and expansion of the mine and partly to the increased growth rate of the surrounding communities. This project argues that the remnants of the mining industry (particularly open cast pits, mine waste rock and infrastructure) need not be redundant and can be reused and rehabilitated to result in productive outcomes by establishing the necessary systemic strategy for transposed use. It contends that the proposed reconfi gured mining infrastructure programs can be responsive to context (history, environment and communities), climate and natural processes of the area. In testing the strength of this argument, diff erent research investigations and theories were used as was appropriate to each area of research in this topic. These included, among others, investigations into the history and context of both the mining industry generally, including its legislative context, and the site specifi cally. Considerations of the embedded memory of the site were taken into account. Theories which assisted in leading to a proposed strategy for the site on a contextual scale included theories relating to contextual productive systems, continuous productive urban landscapes, permaculture and biomimicry, augmented landscapes, entropic architecture, architecture as a machine and the mortality of architecture. Ultimately, a proposed solution as an architectural product was sought. The following questions had to be answered in a eff orts to produce an appropriate architectural response to the site and its challenges: 1. How can the role of architecture reconfigure the redundant, disused mine waste landscape so as to harness a rehabilitative and productive system and how can that system be managed by the design? 2. How can contemporary rural agricultural projects be challenged to form new typologies that empower the communities to provide for their own present and future needs? 3. How can architecture as a system be designed to outlast the temporality of its program to transform a redundant open cast mining landscape into a productive landscape? The architectural intervention is a design of reconfi gured structures aimed at facilitating a productive and sustainable environment for agricultural advancement, in order to rehabilitate the existing “minescape” (industrially altered mining land), and reconcile the use of this land with the history of subsistence farming as practiced by members of the surrounding communities. The proposed architectural product strives to create a site and context responsive architectural program or system by fusing technological strategies into the body of architecture that are essentially environmental. It aims to employ air, water, sun, and earth to augment the productive relationship between architecture and the “minescaped” terrain, thereby creating a Productive Minescape, which yields tangible positive by-products such as agriculture, renewable energy, water treatment and harvesting systems, among others. Other productive by-products of the project are education and research facilities and facilities which aim to provide accessibility and reconciliation of the stakeholders of this area, to the site and to each other. The introduction of these systems and facilities will be phase one of the proposed architectural intervention. However, the intervention is networked, and therefore has a scalable logic which is envisaged to grow and develop at a much larger and more intensive scale, suggested to occur over the next 30 years, which are phases two, three and four (see figures 17 and 18).