scholarly journals An Integrated Approach for the Assessment of Environmental Sustainability in Agro-Industrial Waste Management Practices: The Case of the Tequila Industry

2021 ◽  
Vol 9 ◽  
Author(s):  
Diego Díaz-Vázquez ◽  
Danay Carrillo-Nieves ◽  
Danielle A. Orozco-Nunnelly ◽  
Carolina Senés-Guerrero ◽  
Misael Sebastián Gradilla-Hernández

Sustainable waste management is a key component needed to achieve multiple of the Sustainable Development Goals established by the United Nations for the year 2030. Such waste management can reduce the degradation of superficial water sources and can contribute to the sustainable and efficient use of resources. Due to their usually high nutrient and organic loads, agro-industrial wastes pose a threat to soil and water resources and are a major contributor to greenhouse gas generation. In this study, a novel approach was proposed to assess the environmental sustainability of vinasse management practices, integrating an extensive physicochemical characterization of tequila vinasses, a GIS-based weighted overlay analysis and a scenario analysis. Mathematical models were applied for the determination of discharged pollutants (nitrogen, phosphorus, BOD5), as well as greenhouse gas emissions. This methodology was applied to an environmental sustainability assessment of the management practices of tequila vinasses, which are one of the main waste streams generated by the agro-industry in the Mexican state of Jalisco and are one of the main contributors to organic and nutrient loads affecting the water quality of Jalisco’s superficial water sources. Through this integrated approach, critical regions for the management of tequila vinasses were determined and an extensive physicochemical characterization of tequila vinasses was performed and applied to assess the environmental sustainability of four management scenarios for tequila vinasses. These results can be used by decision-makers for the implementation of public policy and infrastructure for the improvement of local and regional waste management systems. Additionally, these data may be used to increase the environmental sustainability of the tequila industry. The proposed methodology has the potential to be applied to different waste-intensive regions as well as different organic waste streams for the assessment of the environmental sustainability of specific management practices considering the local and regional context.

2018 ◽  
Vol 9 (1) ◽  
pp. 38-46 ◽  
Author(s):  
Younes Ben Zaied ◽  
Nidhaleddine Ben Cheikh ◽  
Pascal Nguyen ◽  
Mohamed Badrane Mahjoub

This paper examines whether a causal relationship exists between waste tonnage and employment when the waste collection is entrusted to a private operator in France (i.e. waste management policy by delegation of service). The empirical investigation is based on weekly data for four waste streams for the period from January 2015 to June 2017. Using nonstationary time series techniques including cointegration, VECM (Vector Error Correction Model) and long-run causality test of Toda and Yamamoto (1995) within a bivariate framework, the results demonstrate potential causal negative relationship between waste tonnage and employment. For three waste streams (i.e. household waste, outdoor garbage waste and miscellaneous waste), the results suggest that waste management practices that aim at entrusting the collection and treatment to a private operator (i.e. waste management by delegation of service) are not economically beneficial to society, because this policy does not favor environmental jobs creation. The paper calls for the adoption of other waste management practices to preserve employment in the waste collection sector.


2016 ◽  
Vol 38 (3) ◽  
pp. 291 ◽  
Author(s):  
Dionne Walsh ◽  
Robyn Cowley

This paper evaluates three decades of innovation by a leading beef producer in the Barkly region of the Northern Territory. The case study represents a rare published analysis of changes in production, greenhouse gas emissions and land condition metrics for a commercial livestock business. Thirty years ago the property was under-developed and had poor livestock productivity by today’s standards. Between 1981 and 2013, the business has increased carrying capacity through water point development, and achieved a >50% increase in herd size, a 46% improvement in weaning rate, an 82% reduction in breeder mortality rate and an improvement in land condition. Annual liveweight turn-off has increased from 75 kg to 128 kg per adult equivalent (AE) carried. All of this has been achieved while using recommended stocking rates. In contrast, two additional analyses reflecting other management approaches being taken by some north Australian beef businesses resulted in poor productivity, economic, emissions and land condition outcomes. Total greenhouse gas emissions have increased on the case study property since 1981 as a result of increasing herd size. However, the intensity of emissions per tonne of liveweight sold has declined by 43% due to the improvements in livestock productivity. The potential for generating carbon revenue from this emissions intensity improvement was explored. We found that for >95% of northern beef enterprises, current project transaction costs would entirely negate carbon revenue at a carbon price of < $25 tCO2e–1. At $5 tCO2e–1, the minimum herd size needed to cover the project transaction costs would be in excess of 35 000 AE. Although substantial carbon profits appear unlikely at present, the management practices evaluated can deliver substantial economic, emissions and land condition benefits to individual businesses and the wider industry. The paper concludes that cost-effective investment to concurrently increase herd size and livestock productivity per head, in conjunction with safe stocking rate management, is a proven path to economic and environmental sustainability in the north Australian beef industry.


2021 ◽  
Vol 26 (4) ◽  
pp. 40-46
Author(s):  
MSHELIA RICHARD BALTHI

Greenhouse gas (GHG) emissions due to solid waste management (SWM) techniques being practiced in the North eastern region of Nigeria are unaccounted for as such these emissions cannot be monitored or controlled. This research estimated GHG emissions into the atmosphere from the current SWM technique practiced in the region, GHG emissions from two different waste management techniques – open burning and incineration was also simulated. The research found that incineration with electricity recovery is the most suitable SWM process therefore suggested that the authorities and other stakeholders in the region should give it serious consideration.


2020 ◽  
Vol 2020 ◽  
pp. 1-8 ◽  
Author(s):  
Charles DeLisi ◽  
Aristides Patrinos ◽  
Michael MacCracken ◽  
Dan Drell ◽  
George Annas ◽  
...  

The long atmospheric residence time of CO2 creates an urgent need to add atmospheric carbon drawdown to CO2 regulatory strategies. Synthetic and systems biology (SSB), which enables manipulation of cellular phenotypes, offers a powerful approach to amplifying and adding new possibilities to current land management practices aimed at reducing atmospheric carbon. The participants (in attendance: Christina Agapakis, George Annas, Adam Arkin, George Church, Robert Cook-Deegan, Charles DeLisi, Dan Drell, Sheldon Glashow, Steve Hamburg, Henry Jacoby, Henry Kelly, Mark Kon, Todd Kuiken, Mary Lidstrom, Mike MacCracken, June Medford, Jerry Melillo, Ron Milo, Pilar Ossorio, Ari Patrinos, Keith Paustian, Kristala Jones Prather, Kent Redford, David Resnik, John Reilly, Richard J. Roberts, Daniel Segre, Susan Solomon, Elizabeth Strychalski, Chris Voigt, Dominic Woolf, Stan Wullschleger, and Xiaohan Yang) identified a range of possibilities by which SSB might help reduce greenhouse gas concentrations and which might also contribute to environmental sustainability and adaptation. These include, among other possibilities, engineering plants to convert CO2 produced by respiration into a stable carbonate, designing plants with an increased root-to-shoot ratio, and creating plants with the ability to self-fertilize. A number of serious ecological and societal challenges must, however, be confronted and resolved before any such application can be fully assessed, realized, and deployed.


2018 ◽  
Vol 1 (1) ◽  
pp. 33
Author(s):  
Luis Hurtado ◽  
Jhonny Valverde Flores

Today, a large amount of solid waste is generated worldwide, of which only 10% is reused. The amount of solid waste reused is reduced if the waste has some characteristics that make it hazardous, as is the case of hospital solid waste (HSW). To this are added the environmental impacts that the waste and its inadequate handling entails. This research shows the association of solid waste management practices with environmental impacts in the Alberto Sabogal Sologuren National Hospital. For this, segregation, internal transport of solid waste, cleaning and disinfection of the equipment and the availability of personal protective equipment were taken into account. To achieve this, an evaluation of its management was carried out, which was carried out by visiting each of the services and / or environments of the Hospital, a physical characterization of solid waste for seven days where solid waste was identified and quantified. areas and services, an interview with staff working in the hospital center and an identification of environmental factors that are impacted as a result of waste management practices.


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