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The purpose of this paper is to examine the impact of rapid population growth due to uncontrolled and unplanned urbanization as it affects environmental degradation through solid waste generation in Port Harcourt Metropolis, which has brought about the problem of solid waste management to city authorities and state government

The study involved the administration of questionnaires to 76 different households with a total population of 393 persons giving an average size of 7 persons per household. Also, formal interviews with officials of relevant government departments as wells as private stakeholders in urban solid waste management were conducted. The questionnaires were designed to elicit information on the characteristics of the respondents and waste generation capacity as well as disposal methods. The data abstracted from the questionnaires were analysed using the multiple linear regression to test for the significant differences. The study period was between January 1999 to December 1999

A total of 207.3 tonnes of solid waste was generated giving per capita annual waste generation rate of 0.53 tonnes equivalent to a waste generator rate of 1.45 kg of waste per capita daily. Analysis of solid waste composition was by land use types. The study showed that cartoons accounted for 16.1 percent, while papers and food remnants had 14.4 percent and 26.6 percent of total waste generated respectively.

Assist city dwellers tackle the problem posed by urban waste through provision of adequate infrastructure and social services.

The paper suggests continuous enlightenment programmes as well as employment of good technical services in the management of solid waste rather than the use of political will to tackle the problems. This work is original, as no such analysis has been carried out in Port Harcourt metropolis. The paper has provided data and knowledge upon which further research can be carried out.

The challenges facing the productivity of Nigeria's refineries have generated much academic discourse. This study was carried out to develop a causal loop model showing the interrelationships of the multiple factors driving the poor performance of the refineries. Using a framework of political, economic, social and technical (PEST) factors, the developed model helped identify leverage points for policy intervention in the system.

A mixed-method approach was adopted to collect quantitative data from 118 refinery workers and qualitative data from 14 participants polled from the various Nigerian National Petroleum Corporation (NNPC) subsidiaries. The quantitative data were analysed through structural equation modelling (SEM) to prioritise the more significant factors, while the qualitative data were analysed by content analysis to further validate the questionnaire findings and provide clearer contexts for the operationalisation of the factors.

The structural equation model identified several PEST factors such as government interference, political indecision, funding issues, spare parts costs, pipeline vandalism, oil theft, maintenance issues as some of the significant factors affecting the performance of the refineries. The interviews validated these findings and provided richer contexts on how these factors operate within system. A causal loop model was developed based on these findings to identify key leverage points upon which policy intervention through best practice, management autonomy and stakeholder satisfaction was proposed to address these challenges.

The study uncovers that the factors which affect the performance of the refineries have significant multiple interrelationships, the understanding of which is crucial for developing effective solutions by policymakers.

The findings of this study lay important foundations for a deeper understanding of how PEST factors interact to drive suboptimal performance across NNPC refineries.

The causal loop model developed in this study provides a new approach to viewing and analysing the associated factors affecting the performance of Nigeria's refineries from a non-linear perspective.

This study empirically examined and investigated the relationship between sustainable manufacturing practices (SMPs) and performance of table water industry (TWI) in Nigeria.

Cross-sectional survey research design was adopted for this study. The population of this study covers all the registered table water firms in Delta and Edo states by National Agency for Food and Drug Administration and Control (NAFDAC). Convenience sampling, a nonprobability sampling method, was used in administering the questionnaire to selected table water firms in the two states used for the study. The sample can be considered as experimental group used for the research and analysis. Data collected through questionnaire administration were analyzed using descriptive statistics. Structural equation modeling (SEM) was used in estimating the research models, through the use of Analysis of Moment Structures (AMOS version 24) software.

The study found that SMPs are adopted by table water firms registered by NAFDAC. It was also found that sustainable packaging and waste management significantly influence the different dimensions of sustainable performance of table water firms.

The study recommends that table water producers should ensure they consistently adhere to NAFDAC standards after product registration and certification to make the products safe for consumption. Also, NAFDAC should promote a regulatory environment with appropriate incentives to table water firms that consistently comply with stipulated regulations that can promote the sustainability of the environment while any table water firms found engaging in unwholesome activities that can undermine the health status of consumers should be severely sanctioned.

The study provides a comprehensive analysis of sustainability practices in the Nigerian TWI by examining four manufacturing practices and how they impact on sustainability performance of the industry. The study will help to reinforce the need for stakeholders in the TWI to be more environmentally conscious.

This paper aims to examine common environmental practices and strategies for implementing sustainable FM among Nigerian FM practitioners.

A review of the literature on sustainability and environmental management was undertaken. Data collection was through self‐administered questionnaires directed to a sample of 150 facilities managers who are members of the International Facility Management Association (Nigeria Group), Lagos, Nigeria. Structured interviews with five top facilities management professionals were also conducted. The data collected were analyzed using frequency counts, means, z‐test, repeated measures analysis of variance (ANOVA) and relative importance index. The survey achieved a response rate of 30 percent.

The survey revealed that many of the practitioners put a premium on achieving energy efficiency as a very vital environmental practice within their organizations. A strategic management procedure is more important for the implementation of environmental management in the Nigerian FM industry.

There is a paucity of literature in sustainability within facilities management in Nigeria. An integration of sustainability considerations into FM practice is required to promote the development of suitable environmental initiatives and practices within Nigerian cities, as many facilities managers are employed by companies whose activities harm the environment.