This study aims to investigate the air quality and health impacts of the waste incinerator located at St Crispin Afya Hospital in Nairobi, Kenya. The incinerator, which has been in operation for several years, has raised concerns among residents and environmental activists about its potential effects on the environment and human health.
Introduction
The rapid growth of urban populations in developing countries has led to an increase in waste generation, posing significant environmental and health challenges. In Nairobi, the capital city of Kenya, the management of healthcare waste has become a pressing issue. St Crispin Afya Hospital, a major healthcare facility in the city, has been using an on-site incinerator to dispose of its medical waste. However, the incinerator has been linked to air pollution and potential health risks to nearby residents.
Methodology
This study used a mixed-methods approach, combining both qualitative and quantitative data collection and analysis methods. Air quality monitoring was conducted using portable air quality monitors to measure particulate matter (PM2.5 and PM10), carbon monoxide (CO), and volatile organic compounds (VOCs) in the vicinity of the hospital. A questionnaire survey was also administered to nearby residents to gather information on their perceptions of the incinerator’s impacts on their health and environment.
Results
The results of the air quality monitoring showed high levels of PM2.5 and PM10, exceeding the World Health Organization (WHO) guidelines. The concentrations of CO and VOCs were also found to be above the recommended limits. The questionnaire survey revealed that a significant proportion of respondents reported respiratory problems, such as coughing, wheezing, and shortness of breath, which they attributed to the incinerator’s emissions.
Health Impacts
The study found a significant association between exposure to the incinerator’s emissions and respiratory health problems among nearby residents. The results suggest that the incinerator is a significant source of air pollution in the area, posing a risk to the health and well-being of the residents. The health impacts of air pollution from the incinerator are likely to be exacerbated by the fact that many residents have pre-existing health conditions, such as asthma and chronic obstructive pulmonary disease (COPD).
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This study highlights the need for urgent attention to be paid to the air quality and health impacts of the waste incinerator at St Crispin Afya Hospital. The findings of this study have implications for policy and practice, suggesting that alternative waste management strategies, such as recycling and composting, should be explored. Additionally, the hospital and regulatory authorities should take immediate action to reduce emissions from the incinerator and mitigate the health risks to nearby residents.
Recommendations
Based on the findings of this study, the following recommendations are made:
- The hospital should consider alternative waste management strategies, such as recycling and composting, to reduce the amount of waste sent to the incinerator.
- The incinerator should be upgraded to meet international emissions standards, and regular maintenance should be performed to ensure optimal performance.
- Regulatory authorities should conduct regular air quality monitoring and enforce emissions standards to protect public health.
- Public awareness campaigns should be conducted to educate residents about the health risks associated with air pollution from the incinerator and the importance of proper waste management.
Future Research Directions
Future studies should investigate the long-term health effects of exposure to the incinerator’s emissions and explore the feasibility of implementing alternative waste management strategies in Nairobi. Additionally, research should be conducted to develop and evaluate effective air pollution mitigation strategies for healthcare facilities in urban areas.
This study contributes to the growing body of evidence on the health impacts of air pollution from waste incineration and highlights the need for sustainable waste management practices in urban areas.

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