scholarly journals Value added cassava waste management and environmental sustainability in Nigeria: a review

2021 ◽  
pp. 100127
Author(s):  
Kigho Moses Oghenejoboh ◽  
Henry Oghenero Orugba ◽  
Ufuoma Modupe Oghenejoboh ◽  
Samuel Enahoro Agarry
2021 ◽  
Vol 13 (6) ◽  
pp. 3379 ◽  
Author(s):  
Daniel Hoehn ◽  
Jara Laso ◽  
María Margallo ◽  
Israel Ruiz-Salmón ◽  
Francisco José Amo-Setién ◽  
...  

There is a growing debate surrounding the contradiction between an unremitting increase in the use of resources and the search for environmental sustainability. Therefore, the concept of sustainable degrowth is emerging aiming to introduce in our societies new social values and new policies, capable of satisfying human requirements whilst reducing environmental impacts and consumption of resources. In this framework, circular economy strategies for food production and food loss and waste management systems, following the Sustainable Development Goals agenda, are being developed based on a search for circularity, but without setting limits to the continual increase in environmental impacts and resource use. This work presents a methodology for determining the percentage of degrowth needed in any food supply chain, by analyzing four scenarios in a life cycle assessment approach over time between 2020 and 2040. Results for the Spanish case study suggested a degrowth need of 26.8% in 2015 and 58.9% in 2040 in order to achieve compliance with the Paris Agreement targets, highlighting the reduction of meat and fish and seafood consumption as the most useful path.


Author(s):  
Filippo Vergara Caffarelli

- Effectiveness, efficiency and affordability have been among the key criteria for municipal solid waste management in the Italian legal framework since the so-called "Ronchi Decree" of 1997. The paper analyses the economic performance of waste-collection firms in Italy. We construct a dataset that includes almost all the companies performing waste collection in the provincial capitals of Italy. We investigate their capital structure, profitability, value added, productivity, investment and business development by means of a set of financial ratios. The research is developed through the assessment of the effects on firms' performance of specialisation, localisation, temporal evolution, size and legal form of firms and the remuneration system for waste collection. The aim of this paper is twofold. First, given the almost universal nature of the sample under investigation, we describe the economic and financial structure of waste collection firms in Italy; second, we empirically evaluate the extent to which the sector has taken on the industrial characteristics set forward in the legal framework. Hence the analysis is conducted both at sector level and at firm level. At the aggregate level, it is possible to identify a trend for the sector as a whole towards convergence with the rest of the economy. However, waste management still displays clear signs of backwardness, especially due to weaker financial structure, higher incidence of labour costs on value added and lower investment. Firm-level data are analysed with both univariate and multivariate statistical techniques. The results confirm the general backwardness of the sector, with businesses located in Southern part of Italy lagging even further behind. Moreover, firms simultaneously providing multiple utility services are more profitable than those specialized in the waste sector only. However this appears attributable to cross-subsidisation between services, not economies of scope. Both scale of operations and legal form have a positive impact on firms' profitability, thanks in part to a negative correlation with degree of specialisation. Moreover, the economic performance of waste management firms is significantly pro-cyclical. Finally, the new cost-based remuneration system for collection services produces ambiguous results. It has a positive effect on operational efficiency and productivity but does not increase the return on capital. A simple econometric model is estimated to evaluate the simultaneous impact on firms' performance of specialisation, localisation, temporal evolution, size, legal form and remuneration system, confirming the outcome of the univariate analysis. In the light of our results, the successful "industrialization" of the waste management sector appears still far away.Keywords: local public services, waste management, regulationJEL classifications: L32, L51, Q53Parole chiave: servizi pubblici locali, gestione dei rifiuti urbani, regolamentazione


Author(s):  
Ayşenur Erdil ◽  
Mehtap Erdil

The purpose of this chapter is to investigate and determine the most appropriate strategy according to the results of applied methodologies and literature about waste management for the textile sector. In this research, improvement of this concept for textile sector in Turkey has been implemented by using SWOT analysis integrated with AHP framework. Based on this, the most appropriate strategy has been chosen for this industry. According to this destination, SWOT analysis has been applied and alternative strategies have been determined which are based on green production and waste management of textile products for this sector. Then this SWOT matrix has been converted into a hierarchical structure. Thus, AHP model of this application has been formed with this perception via this methodology. Consequently, determination a management strategy within environmentally oriented production for this industry will be provided to contribute the environmental sustainability. Also, this study will be given a point of general view and approach for the importance of green production and consumption.


2019 ◽  
Vol 11 (6) ◽  
pp. 1759
Author(s):  
Olaoluwa Omilani ◽  
Adebayo Abass ◽  
Victor Okoruwa

The paper examined the willingness of smallholder cassava processors to pay for value-added solid wastes management solutions in Nigeria. We employed a multistage sampling procedure to obtain primary data from 403 cassava processors from the forest and Guinea savannah zones of Nigeria. Contingent valuation and logistic regression were used to determine the willingness of the processors to pay for improved waste management options and the factors influencing their decision on the type of waste management system adopted and willingness to pay for a value-added solid-waste management system option. Women constituted the largest population of smallholder cassava processors, and the processors generated a lot of solid waste (605–878 kg/processor/season). Waste was usually dumped (59.6%), given to others (58.1%), or sold in wet (27.8%) or dry (35.5%) forms. The factors influencing the processors’ decision on the type of waste management system to adopt included sex of processors, membership of an association, quantity of cassava processed and ownership structure. Whereas the processors were willing to pay for new training on improved waste management technologies, they were not willing to pay more than US$3. However, US$3 may be paid for training in mushroom production. It is expected that public expenditure on training to empower processors to use solid-waste conversion technologies for generating value-added products will lead to such social benefits as lower exposure to environmental toxins from the air, rivers and underground water, among others, and additional income for the smallholder processors. The output of the study can serve as the basis for developing usable and affordable solid-waste management systems for community cassava processing units in African countries involved in cassava production.


2020 ◽  
Vol 12 (7) ◽  
pp. 3059
Author(s):  
Luis Gomes ◽  
Tânia Nobre ◽  
Adélia Sousa ◽  
Fernando Rei ◽  
Nuno Guiomar

Worldwide sustainable development is threatened by current agricultural land change trends, particularly by the increasing rural farmland abandonment and agricultural intensification phenomena. In Mediterranean countries, these processes are affecting especially traditional olive groves with enormous socio-economic costs to rural areas, endangering environmental sustainability and biodiversity. Traditional olive groves abandonment and intensification are clearly related to the reduction of olive oil production income, leading to reduced economic viability. Most promising strategies to boost traditional groves competitiveness—such as olive oil differentiation through adoption of protected denomination of origin labels and development of value-added olive products—rely on knowledge of the olive varieties and its specific properties that confer their uniqueness and authenticity. Given the lack of information about olive varieties on traditional groves, a feasible and inexpensive method of variety identification is required. We analyzed leaf spectral information of ten Portuguese olive varieties with a powerful data-mining approach in order to verify the ability of satellite’s hyperspectral sensors to provide an accurate olive variety identification. Our results show that these olive varieties are distinguishable by leaf reflectance information and suggest that even satellite open-source data could be used to map them. Additional advantages of olive varieties mapping were further discussed.


2020 ◽  
Vol 305 ◽  
pp. 00054
Author(s):  
Marco Ragazzi ◽  
Elena Cristina Rada ◽  
Alessandro Abbà ◽  
Marco Schiavon

Educational institutions and, specifically, university campuses are large energy consumers and waste producers. The impact of university campuses on the local waste management increases with decreasing the size of the city/town where universities are located. Following the growing interest of the scientific community on the research for strategies to improve the environmental sustainability of educational institutions, this paper aims at proposing specific parameters to 1) measure the performance of university buildings in waste management, 2) detect anomalous situations that require improvements and 3) implement ameliorative actions. Specifically, parameters like the per-capita or surface-specific waste generation could help identifying the structures that may require primary interventions. With reference to the case of a medium-size university, the paper points out the advantages of the punctual tariff system for waste management adopted by the local utility company and critically analyses its weak points. Overall, this system offers great opportunities for improving waste management and for cost savings, but requires careful management policies by public institutions.


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