Framework to assess eco-efficiency improvement: Case study of a meat production industry

Iten, Muriel; Fernandes, Ulisses da Silva; Oliveira, Miguel Castro

doi:10.1016/j.egyr.2021.09.120

Cited by 15 publications

(2 citation statements)

References 77 publications

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“…These concepts are established through a review on the implementation of Water and Energy Integration in the process industry, namely through waste heat recovery, thermal energy storage and heat-driven wastewater treatment technologies. This work is part of ongoing research involving all aspects associated with the implementation of heat recovery, water treatment and recirculation and eco-efficiency promotion practices in the process industry [22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Review on Water and Energy Integration in Process Industry: Water-Heat Nexus

2022

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The improvement of water and energy use is an important concern in the scope of improving the overall performance of industrial process plants. The investment in energy efficiency comprehended by the most recent sustainability policies may prove to be an effective response to the fall of energy intensity rates associated with the economic crisis brought by the COVID-19 pandemic. The improvement in water efficiency may also prove to be a potential approach due to its interdependencies to energy use, whose exploitation comprises part of the study of the water-energy nexus. Waste heat recovery and water reclamation practices have been exploited to improve water and energy efficiency. A specific method designated “Combined Water and Energy Integration” has been applied to water recycling as both an additional water source and a heat recovery source in a set of water-using processes. In scientific and industrial domains, there is still a need for integrated approaches of water-using and combustion-based processes for overall water and energy efficiency improvements in industrial plants. In this work, an innovative approach for a simultaneous improvement of water and energy use is proposed based on process integration and system retrofitting principles. This proposal is based on the delineation of two innovative concepts: Water and Energy Integration Systems (WEIS) and Water-Heat Nexus (WHN). A review on existing technologies for waste heat recovery, thermal energy storage and heat-driven wastewater treatment is performed, following a conceptualisation design.

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Section: Introductionmentioning

confidence: 99%

Review on Water and Energy Integration in Process Industry: Water-Heat Nexus

2022

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“…This work performs a review on the state-of-the-art of thermochemical technologies for energy storage and energy recovery from wastewater. It is set to frame the analysis of the installation of these technologies within water and energy integration systems (WEIS), in follow-up of an ongoing research on this area involving all the aspects associated to the implementation of heat recovery, water treatment and recirculation and eco-efficiency promotion practices in process industry [4,[16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Review of Thermochemical Technologies for Water and Energy Integration Systems: Energy Storage and Recovery

2022

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Thermochemical technologies (TCT) enable the promotion of the sustainability and the operation of energy systems, as well as in industrial sites. The thermochemical operations can be applied for energy storage and energy recovery (alternative fuel production from water/wastewater, in particular green hydrogen). TCTs are proven to have a higher energy density and long-term storage compared to standard thermal storage technologies (sensible and latent). Nonetheless, these require further research on their development for the increasing of the technology readiness level (TRL). Since TCTs operate with the same input/outputs streams as other thermal storages (for instance, wastewater and waste heat streams), these may be conceptually analyzed in terms of the integration in Water and Energy Integration System (WEIS). This work is set to review the techno-economic and environmental aspects related to thermochemical energy storage (sorption and reaction-based) and wastewater-to-energy (particular focus on thermochemical water splitting technology), aiming also to assess their potential into WEIS. The exploited technologies are, in general, proved to be suitable to be installed within the conceptualization of WEIS. In the case of TCES technologies, these are proven to be significantly more potential analogues to standard TES technologies on the scope of the conceptualization of WEIS. In the case of energy recovery technologies, although a conceptualization of a pathway to produce usable heat with an input of wastewater, further study has to be performed to fully understand the use of additional fuel in combustion-based processes.

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Industrial eco-efficiency of resource-based cities in China: spatial–temporal dynamics and associated factors

Chen

Yin

et al. 2023

Environ Sci Pollut Res

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Promoting the greening of industry is the key to achieving high-quality and sustainable development of the urban economy. It is particularly important for resource-based cities (RBCs) that exploit natural resources as the leading industries. In this paper, the Windows-Bootstrap-DEA model was used to calculate the industrial eco-efficiency (IEE) of 114 RBCs in China from 2003 to 2016, and the regional differences and dynamic evolution characteristics of the IEE were analyzed. The panel Tobit model was used to explore the factors associated with IEE in RBCs. The results showed that the IEE of RBCs in China was at a low level during the study period, and the resource utilization process had not reached an optimal state. There were large regional differences in IEE, and there was a significant degree of spatial agglomeration. The results of conditional probability density estimation showed that the distribution of IEE had strong internal stability on the whole, and the distributions of IEE of RBCs in different regions, different resource types, and different development stages showed significant differences. The results of the panel Tobit model showed that per capita GDP, ownership structure, science and technology input, and industrial agglomeration had significant positive effects on IEE, while industrial structure and employment structure showed significant negative effects. The conclusions of this paper can provide a scientific decision-making basis for industrial transformation planning of RBCs.

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Framework to assess eco-efficiency improvement: Case study of a meat production industry

Cited by 15 publications

References 77 publications

Review on Water and Energy Integration in Process Industry: Water-Heat Nexus

Review on Water and Energy Integration in Process Industry: Water-Heat Nexus

Review of Thermochemical Technologies for Water and Energy Integration Systems: Energy Storage and Recovery

Industrial eco-efficiency of resource-based cities in China: spatial–temporal dynamics and associated factors

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