Evaluation of the Water–Energy nexus in the treatment of urban drinking water in Chile through exergy and environmental indicators

2021 ◽  
pp. 128494
Author(s):  
Vanesa Rodríguez-Merchan ◽  
Claudia Ulloa-Tesser ◽  
Carolina Baeza ◽  
Yannay Casas-Ledón
2018 ◽  
Vol 36 (1) ◽  
pp. 67-85 ◽  
Author(s):  
Raghu Rama D.T.V. Swamy ◽  
Piyush Tiwari ◽  
Anil Sawhney

Purpose The purpose of this paper is to understand the factors that affect the performance of projects being implemented on the public-private partnership (PPP) framework, with specific reference to urban drinking water sector in India. Design/methodology/approach A listing of factors that have a bearing on project performance have been developed based on a review of the literature. Through a survey, seven factors that are relevant to the Indian context were determined. Interviews were then conducted across a cross-section of government agencies, financial institutions, development agencies, private sector entities and consultants to understand the relative importance of these attributes. The analytical hierarchy process was used to develop relative weights of these factors. Findings Ranking and relative weights of the factors in descending order are stakeholder consent and support for water PPP projects (22.1 percent), appropriate project structure (17.4 percent), availability of realistic baseline information (16.2 percent), reasonable water tariffs (13.9 percent), public sector capacity (13.0 percent), well-developed market (9.5 percent) and water sector regulator (7.9 percent). Differences in perceptions amongst various stakeholder groups were also found. Research limitations/implications Water sector has not matured, and with the advent of newer formats of implementation models, there could be significant changes in the sector. As the number of projects available for study is limited, this exercise can be undertaken periodically and updated in relation to experiences in other infrastructure sectors. Practical implications This analysis provides inputs to policymakers and project proponents for structuring more sustainable urban drinking water PPP projects. Originality/value Indian infrastructure PPP market is attracting increased attention from researchers, though not much emphasis is being given to urban drinking water sector. This paper aims to contribute toward filling this research gap.


2020 ◽  
Vol 26 (3) ◽  
pp. 04020023 ◽  
Author(s):  
Venkata Raghu Rama Swamy Dharmapuri Tirumala ◽  
Piyush Tiwari ◽  
Anil Sawhney ◽  
Krishnan Kodumudi Pranatharthiharan

2017 ◽  
Vol 17 (2) ◽  
Author(s):  
Deborah K Magaji

The study assessed the environmental determinants of nutritional status of children under-five in Northern States, Nigeria. The study had one objective, one research question and one hypothesis. Ex post facto design method was used for the study. The researcher targeted 400 mother-child-pairs used as the subjects of the study. Data regarding Environmental Quality Indicators (EQI): (household type, structure, toilet and source of drinking water) was collected by using a questionnaire. Personal contact was used for data collection. Weighing scale and infantometer/heightometer were used to measure weight and length/height of children. The Statistical Package for Social Sciences version 23 was used for data analysis. Pearson Product Moment Correlation (PPMC) was used for analysis and was considered significant at 0.05 alpha levels. The result showed that, 194 (49%) children had normal growth rate, 97 (25%) were stunted, 59 (15%) were underweight while 45 (11%) were wasting. The result further revealed that, significant influence existed between EQI and underweight (r=.711; P=<.027), stunting (r=.506; p=<.043) and wasting (r=.611; p=<.0081). The study concluded that, the nutritional status of children in Northern states, Nigeria was poor, and that environmental indicators of source of drinking water and household type significantly influenced the nutritional status of children under-five in Northern States, Nigeria. It was recommended that, government intervention should aim at provision of adequate water supply and promote traditional buildings combined with modern technology to ensure optimal child development in Northern States, Nigeria.


2019 ◽  
Vol 9 (2) ◽  
pp. 237-246
Author(s):  
Antonio Andres Martinez

Abstract Water source protection is essential to ensure the provision of safe drinking water. In Haiti, and elsewhere, this is a dynamic requirement affected by population growth, not least in urban areas. In this paper, the principles of legitimacy, integration, inclusiveness, and capacity have been used to gauge and understand the institutional environment regarding water source protection for urban drinking water provision. The research was based on a review of official documents and key informant interviews. The absence of robust legislation can result in a misinterpretation of institutional responsibilities with respect to both water and land management. The legitimacy of some key institutions is questioned due to unclear legal status, particularly when they are directly appointed by central government. Some institutions have gained recognised authority as a result of their sectoral prominence but lack legal backing. Particular initiatives may foster the integration of stakeholders but, without involving all necessary sectors, agencies and levels of government, their sustainability is questionable. Technical, structural and financial institutional capacities appear limited, hampering the implementation of initiatives and their continuity, also compounded by institutional dependence on external funds and high turnover of administrators.


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