Residents' willingness to pay for improved liquid waste treatment in urban Ethiopia: results of choice experiment in Addis Ababa

2015 ◽  
Vol 59 (1) ◽  
pp. 163-181 ◽  
Author(s):  
Getahun Woldemariam ◽  
Aseffa Seyoum ◽  
Mengistu Ketema
Keyword(s):  
Willingness To Pay ◽  
Choice Experiment ◽  
Waste Treatment ◽  
Addis Ababa ◽  
Liquid Waste

scholarly journals Improving the demand for birth registration: a discrete choice experiment in Ethiopia

2020 ◽  
Vol 5 (5) ◽  
pp. e002209 ◽  
Author(s):  
Mahari Yihdego ◽  
Ayanaw Amogne ◽  
Selamawit Desta ◽  
Yoonjoung Choi ◽  
Solomon Shiferaw ◽  
...  
Keyword(s):  
Willingness To Pay ◽  
Discrete Choice Experiment ◽  
Discrete Choice ◽  
Urban Areas ◽  
Choice Experiment ◽  
Addis Ababa ◽  
Discrete Choice Experiments ◽  
Birth Certificates ◽  
Significant Heterogeneity ◽  
Birth Registration

IntroductionBirth registration remains limited in most low and middle-income countries. We investigated which characteristics of birth registration facilities might determine caregivers’ decisions to register children in Ethiopia.MethodsWe conducted a discrete choice experiment in randomly selected households in Addis Ababa and the Southern Nations, Nationalities, and People’s Region. We interviewed caregivers of children 0–5 years old. We asked participants to make eight choices between pairs of hypothetical registration facilities. These facilities were characterised by six attributes selected through a literature review and consultations with local stakeholders. Levels of these attributes were assigned at random using a fractional design. We analysed the choice data using mixed logit models that account for heterogeneity in preferences across respondents. We calculated respondents’ willingness to pay to access registration facilities with specific attributes. We analysed all data separately by place of residence (urban vs rural).ResultsSeven hundred and five respondents made 5614 choices. They exhibited preferences for registration facilities that charged lower fees for birth certificates, that required shorter waiting time to complete procedures and that were located closer to their residence. Respondents preferred registration facilities that were open on weekends, and where they could complete procedures in a single visit. In urban areas, respondents also favoured registration facilities that remained open for extended hours on weekdays, and where the presence of only one of the parents was required for registration. There was significant heterogeneity between respondents in the utility derived from several attributes of registration facilities. Willingness to pay for access to registration facilities with particular attributes was larger in urban than rural areas.ConclusionIn these regions of Ethiopia, changes to the operating schedule of registration facilities and to application procedures might help improve registration rates. Discrete choice experiments can help orient initiatives aimed at improving birth registration.

The effects of personal experience on choice-based preferences for wildfire protection programs

2013 ◽  
Vol 22 (2) ◽  
pp. 234 ◽  
Author(s):  
Thomas P. Holmes ◽  
Armando González-Cabán ◽  
John Loomis ◽  
José Sánchez
Keyword(s):  
Willingness To Pay ◽  
Personal Experience ◽  
Choice Experiment ◽  
Prior Experience ◽  
Preference Heterogeneity ◽  
Risk Averse ◽  
Risk Seeking ◽  
Economic Rationale ◽  
Trade Offs ◽  
Risk Loss

In this paper, we investigate homeowner preferences and willingness to pay for wildfire protection programs using a choice experiment with three attributes: risk, loss and cost. Preference heterogeneity among survey respondents was examined using three econometric models and risk preferences were evaluated by comparing willingness to pay for wildfire protection programs against expected monetary losses. The results showed that while nearly all respondents had risk seeking preferences, a small segment of respondents were risk neutral or risk averse. Only respondents who had personal experience with the effects of wildfire consistently made trade-offs among risk, loss and cost and these respondents were willing to pay more for wildfire protection programs than were respondents without prior experience of the effects of wildfire. The degree to which people with prior experience with the effects of wildfire can effectively articulate an economic rationale for investing in wildfire protection to other members of their own or other communities facing the threat of wildfires may influence the overall success of wildfire protection programs.

scholarly journals A Choice Based Experiment of Community Supported Agriculture (CSA): A Valuation of Attributes

2018 ◽  
Vol 48 (1) ◽  
pp. 1-20 ◽  
Author(s):  
Qiushuo Yu ◽  
Ben Campbell ◽  
Yizao Liu ◽  
Jiff Martin
Keyword(s):  
Willingness To Pay ◽  
Choice Experiment ◽  
Online Survey ◽  
Risk Mitigation ◽  
Consumer Preference ◽  
Community Supported Agriculture ◽  
Organic Products

Community-supported agriculture (CSA) operators are becoming more innovative in their efforts to attract consumers to become CSA shareholders. Therefore, CSA operators must understand which attributes consumers value. Using an online survey of Connecticut consumers in conjunction with a choice experiment, we evaluate consumer preference and willingness to pay for various attributes, including risk mitigation. We find younger consumers are more likely to prefer CSAs with organic products, while a greater diversity of products in the CSA share will increase preference for a CSA for some consumers. Further, we find that consumers with and without CSA experience value the risk-mitigation attribute.

scholarly journals Studi Kemampuan Adsorpsi Ion Logam Cr6+ oleh Tanah Vulkanik “Studi Kasus Wilayah Industri Penyamakan Kulit, Garut”

2020 ◽  
Vol 21 (1) ◽  
pp. 125-130
Author(s):  
Nyoman Sumawijaya ◽  
Asep Mulyono ◽  
Anna Fadliah Rusydi
Keyword(s):  
Adsorption Capacity ◽  
Waste Treatment ◽  
Liquid Waste ◽  
Freundlich Isotherm ◽  
Organic Content ◽  
Maximum Adsorption Capacity ◽  
Soil Media ◽  
Pass Through ◽  
Soil Organic Content ◽  
The Impact

ABSTRACTThe leather tanning industry in Sukaregang, Garut Regency, produces liquid waste containing Chromium and is discharged directly into the Ciwalen River without a waste treatment process. The content of Cr6+ as metal ions in the waste can also contaminating groundwater. The movement of Cr6+ will pass through the soil media before entering to the groundwater wells. The capability of the soil to adsorb the contaminant will reduce the impact on groundwater. The purpose of this study was to determine the ability of the soil in adsorbing and inhibiting the movement of Cr6+ into groundwater. The study was carried out at Sukaregang, Garut Regency and conducting adsorption experiments with a batch system. The analysis was carried out using the Langmuir and Freundlich isotherm model. The experimental results showed that Cr6+ adsorbed ranged from 38% to 57% of the initial concentration. The results from Langmuir Isotherm were: the distribution coefficient (Kads) was 0.45 L/mg and the maximum adsorption capacity (qm) was 2.44 mg/100g sorbent with R2 = 0.959 and Freundlich Isotherm was: qm was 2,86 mg/100g sorbent and Kads was 0,35 L/mg with R2 = 0,860. This large adsorption capacity is caused by soil texture and soil organic content. The soil in Sukaregang tanning industries has a high adsorption capacity towards Cr6+ contaminants.Keywords: adsorption, chromium, Cr6+, contaminant, volcanic soil, GarutABSTRAKIndustri penyamakan kulit di wilayah Sukaregang, Kabupaten Garut, menghasilkan limbah cair yang mengandung Kromium dan dibuang ke Sungai Ciwalen tanpa proses pengolahan limbah. Kandungan ion logam Cr6+ pada limbah dapat mencemari air tanah. Pergerakan ion logam Cr6+ akan melalui media tanah sebelum memasuki sumur-sumur penduduk. Beberapa jenis tanah mempunyai kemampuan untuk mengadsorpsi ion pencemar sehingga tidak semua limbah yang meresap ke dalam tanah mencemari air tanah. Tujuan dari penelitian ini adalah untuk mengetahui peranan tanah dalam menghambat pergerakan ion logam Cr6+ ke dalam air tanah. Penelitian dilaksanakan dengan pengambilan sampel tanah di daerah Sukaregang, Garut, dan melakukan percobaan adsorpsi dengan sistem batch. Sementara analisis dilakukan dengan menggunakan model isotherm Langmuir dan Freundlich. Hasil percobaan menunjukkan konsentrasi Cr6+ yang teradsorpsi berkisar 38 – 57 % dari konsentrasi awal. Kads sebesar 0,45 L/mg dan qm sebesar 2,44 mg/100g tanah dengan nilai R2 = 0,959 menggunakan isoterm Langmuir dan isoterm Freundlich memberikan nilai qm sebesar 2,86 mg/100 g sorbent dan Kads sebesar 0,35 L/mg dengan R2 = 0,860. Tingginya daya adsorpsi ini disebabkan oleh tekstur tanah dan kandungan bahan organik. Tanah di wilayah penelitian memiliki daya adsorpsi yang besar terhadap kontaminan Cr6+.Kata kunci: adsorpsi, kromium, Cr6+, kontaminan, tanah vulkanik, Garut

scholarly journals Consumer willingness to pay for fair-trade attributes of goat meat in Kenya: A choice experiment analysis

2020 ◽  
Vol 15 (4) ◽  
pp. 372-386
Author(s):  
David Jakinda Otieno ◽  
Keyword(s):  
Willingness To Pay ◽  
Fair Trade ◽  
Value Chain ◽  
Choice Experiment ◽  
Consumer Preferences ◽  
Random Parameter ◽  
Developed Countries ◽  
Support Provision ◽  
Goat Meat ◽  
Domestic Markets

Fair trade is an important ethical concern in the food value chains of developed countries. However, there is a dearth of empirical insights into consumer preferences for this critical aspect in the domestic markets of developing countries. The current study analysed consumer willingness to pay (WTP) for fair-trade attributes in the goat meat value chain in Nairobi, Kenya. Choice experiment data from 270 randomly sampled consumers was analysed using the random parameter logit (RPL) model. The results show that 56% of the consumers were aware of the fair-trade concept and 64% of them were willing to pay for fair-trade-compliant practices. Specifically, consumers were willing to pay a premium of 62% to prevent child labour, 45% to support provision of medical insurance for workers in the meat value chain, 40% for direct purchase from producers, 39% for fair-trade labelling and 30% to support disabled people as part of corporate social responsibility

scholarly journals Characterization of odours emitted by liquid waste treatment plants (LWTPs)

2016 ◽  
Vol 18 (4) ◽  
pp. 721-727 ◽  
Keyword(s):  
Waste Treatment ◽  
Liquid Waste ◽  
Management Tool ◽  
Complex Nature ◽  
Atmospheric Conditions ◽  
Exposed Population ◽  
Waste Treatment Plants ◽  
Odour Emissions ◽  
Definition Of

<p>Odour emissions from liquid waste treatment plants (LWTPs) generally cause significant effects on the environment in terms of nuisance to exposed population. The particular and complex nature of the mixture of the volatile substances, its variability in time and the strong influence of the atmospheric conditions, are the elements that delayed their regulation and relative management.</p> <p>Limited data are available in the technical and scientific literature, regarding the odour emissions characterization from liquid waste treatment plants. Moreover there isn’t a common strategy from the different European Countries in the regulation of their emissions.</p> <p>Different methods can be used to measure odour emissions from environmental engineering plants, and currently, in Europe, the most used techniques for odour emissions characterization and quantification is the dynamic olfactometry, according to EN 13725:2003.</p> <p>The aim of this study is the characterization of the odour emissions from different liquid waste treatment plants (LWTPs), trough a case study of two large real LWTPs, in order to identify the principal odour sources and to define their related odour emissions.</p> <p>Odour Concentration Index (OCI) is proposed as a useful and simply odour management tool for the identification of the priority actions necessary to identify and control the main odorous sources. Relationship between the measured odour emissions and the types of treated liquid waste (identified in terms of EWC code, COD and NH4<sup>+</sup>) is also discussed.</p> <p>Results show that the influent collection tank is the source with the highest detected odour emissions. OCI results are useful for the definition of a clear priority action for odour control, similar for both investigated plants. Between the characterized types of liquid waste treated by LWTPs the leachate (EWC 190703) show the maximum odour emissions.</p>

Sign in / Sign up

Export Citation Format

Share Document