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People’s perceptions on the use of human excreta for biogas generation in Ghana

Author

Listed:
  • M. Osei-Marfo

    (University of Cape Coast
    CAPHRI, University of Maastricht)

  • N. K. Vries

    (CAPHRI, University of Maastricht)

  • E. Awuah

    (Kwame Nkrumah University of Science and Technology)

Abstract

This paper explored people’s perceptions on the use of human excreta for biogas generation in Ghana using the theory of planned behaviour (TPB). It sought to assess the effect of attitude, subjective norms and perceived behavioural control on people’s behavioural intention to use human excreta (HEx) for biogas. Data collection was by questionnaire designed with the TPB constructs and other demographic information, and the analysis was done by structural equation modelling (SEM). The analysis produced two structural models: the standard TPB model and the adjusted model. Based on SEM, this study revealed that the adjusted model provides a useful and effective framework for analysing the interrelationships between socio-demographic variables and the standard TPB constructs than the standard TPB. Therefore, the results show that the effect of attitude, subjective norms and perceived behavioural control are all significant and positive. Though all the constructs were significant and positive, participants showed low perceived behavioural control or they perceive low ability of using HEx for biogas. Results revealed an adequate fit for people’s behavioural intentions to use HEx for biogas. The adjusted model, generated by the inclusion of gender and education into the TPB model, provided a useful and effective framework for the interrelationships between socio-demographic variables and the TPB constructs than the standard TPB. Attitudes, subjective norms and perceived behavioural control significantly influenced intentions to use HEx for biogas. Though perceived behavioural control showed low controllability, subjective norm was a major factor with religion being key on intentions to use HEx for biogas generation. Gender and education had no direct significant influence on intentions, but their effects were mediated through the TPB factors. It was further revealed that knowledge on the benefits of biogas as well as the perceived effect of using human excreta was strong and positive. Interventions aimed at promoting the use of HEx for biogas should address low controllability and that should include government subsidy and financial support as well as education to address stigma and HEx knowledge. The intervention should also bring on board important persons such as religious leaders and persons from relevant institutions to lead more open discussions on HEx use for biogas.

Suggested Citation

  • M. Osei-Marfo & N. K. Vries & E. Awuah, 2022. "People’s perceptions on the use of human excreta for biogas generation in Ghana," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 24(1), pages 352-376, January.
    • Handle: RePEc:spr:endesu:v:24:y:2022:i:1:d:10.1007_s10668-021-01439-4
    DOI: 10.1007/s10668-021-01439-4
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    References listed on IDEAS

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    3. Amigun, B. & von Blottnitz, H., 2010. "Capacity-cost and location-cost analyses for biogas plants in Africa," Resources, Conservation & Recycling, Elsevier, vol. 55(1), pages 63-73.
    4. Jan, Inayatullah & Akram, Waqar, 2018. "Willingness of rural communities to adopt biogas systems in Pakistan: Critical factors and policy implications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P2), pages 3178-3185.
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