Accounting for the benefits of technology change: Replacing a zinc-coating process by a water-based organo-metallic coating process

Almeida, C.M.V.B.; Sevegnani, Fábio; Agostinho, Feni; Liu, Gengyuan; Coscieme, Luca; Giannetti, Biagio F.

doi:10.1016/j.jclepro.2017.10.192

Cited by 24 publications

(8 citation statements)

References 16 publications

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“…The number of research articles that have employed emergy, as cited in two recent papers, 17 , 18 has totaled over 700 by 2014, with several papers recently stressing the relationship between emergy and exergy. 19 , 20 , 21 , 22 While there have been a wealth of papers that use emergy for case studies and methodological improvements, especially at technological, 23 industrial, 24 regional, 25 national, 26 and global levels, 27 only a recent one 28 has started exploring the implications of Odum’s original propositions 8 using empirical data from the literature. However, while Odum’s paper explored the hierarchical organization using the transformity concept (by collecting over 700 transformities from the literature), there are still issues with the method employed, that need to be addressed and refined.…”

Section: Introductionmentioning

confidence: 99%

Energy constrains to increasing complexity in the biosphere

et al. 2021

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Thirty years ago, the systems ecologist Howard T. Odum introduced the concept of transformity, which is a thermodynamic measure of quality within the trial and error evolutionary dynamics of ecosystems, namely an indicator of rank in the hierarchical system structure of the biosphere. Based on a global database of individual processes and whole economies, this paper extends, refines, and updates Odum's idea, demonstrating the strength of the postulated relation. In particular, an inverse linear logarithmic relationship is shown to hold between resource quantity (exergy) and quality (emergy), which is the result of an overall energetic efficiency characteristic of energy transformation processes of the biosphere. This relation extends from natural renewable energy sources to human information (including global internet data flows) and know-how embedded in national economies, thus identifying a consistent theory of hierarchical organization of the biosphere grounded in energetics and ultimately setting constraints to illusions of unlimited growth.

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Section: Introductionmentioning

confidence: 99%

Energy constrains to increasing complexity in the biosphere

et al. 2021

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“…Coating process is the final step in metal finishing. (Almeida et al, 2018). Recently, electro-coating (E-coating) is well known as innovative coating process in which colloidal particles with electrical charges migrates in liquid medium under the effect of electric field and deposited onto metallic surfaces (Song & Liu, 2012) forming a very stable and corrosion resistant thickness.…”

Section: Introductionmentioning

confidence: 99%

“…However, this represents a huge amount of chemicals with excessive amount of sludge production and may be unsustainable for application. Environmental, economic, and social limitations increasingly posed by conventional wastewater systems, new approaches that incorporate controlled release of effluent is designed with sustainability in contrast to energy-intensive and chemical-dependent systems (Almeida et al, 2018). In a study by Abou-Elela et al, (2018), they achieved a sustainable and cost-effective solution to shock loads generated from water heater industry by applying the control release approach.…”

Section: Introductionmentioning

confidence: 99%

Treatment of hazardous wastewater generated from metal finishing and electro‐coating industry via self‐coagulation: Case study

Abou‐Elela

Fawzy

El‐Shafai

2021

Water Environment Research

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The aim of this study is to find out a sustainable and cost-effective solution to manage hazardous shock loads from metal finishing and electro-coating industry. Results indicated that the main sources of hazardous wastewater are coming from batch chemical cleaning of degreasing basin (CCDB) (pH 13) and contains very hazardous chemicals, batch chemical cleaning of phosphating basin (CCPB) (pH 1.03) and contains high concentrations of iron (2300 mg/L) and zinc (2400 mg/L) and degreasing basin contents (DBC). Different treatment approaches were investigated. Results indicated that mixing CCDB with CCPB at their actual discharge allowed to form a self-coagulant of metal hydroxide which was utilized to treat the (DBC) followed by sedimentation. Removal efficiency of COD (87%), TSS (94%), and oil and grease (92%) were achieved. To compare the efficiency of this treatment approach, conventional chemical coagulation of DBC was carried out using FeCl 3 but the amount was very high. In conclusion, results proved the advantage of using self-coagulation to treat DBC since it eliminates the use of external chemicals and provides an integrated solution for the three main sources of hazardous pollutants. © 2021 Water Environment Federation • Practitioner points• The manuscript provide an innovative and sustainable solution to the shock loads of hazardous wastewater generated from metal finishing and E-coating industry by utilizing iron-rich wastewater from chemical cleaning of phosphating basin and alkaline wastewater from chemical cleaning of degreasing basin to produce metal hydroxide. • The metal hydroxide was cost-effective and technically effectively than external coagulant in treating highly polluted degreasing basin content at due discharge time. • Iron-rich wastewater could be used to produce self-coagulant of iron hydroxide.• Mixing iron rich wastewater and alkaline wastewater produce iron hydroxide.• Iron hydroxide is cost-effective in treating hazardous wastewater of degreasing basin.

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“…Before this era, the major use of zinc ores was fabricating brass [1][2][3]. In recent decades, zinc and zincbased alloys have been broadly used in assorted industries such as die-casting, Nano-zinc oxide, hot-dip galvanizing, zinc chemicals, coating, wrought alloys, and electronics [4][5][6][7][8][9][10][11]. Zinc and its alloy are preferable anodic materials in various high-energy batteries including Zn/air, Ni/Zn, and Ag/Zn batteries [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Understanding the interaction properties of an eco-friendly corrosion inhibitor on Zn (1 1 0) surface: Comprehensive DFT-based MD simulation

Rahmanzadeh

Rezvani

Ganji

2021

Preprint

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Regarding the deleterious effects of corrosion for a wide range of metals and alloys, many different techniques have been developed to protect the metals against corrosion. Utilizing organic inhibitors, especially those that contain heteroatoms and multiple bonds has been found an effective approach. In this research, the adsorption of a novel green inhibitor, Laurhydrazide N′-propan-3-one (LHP), on the Zn (110) surface was investigated using dispersion corrected DFT calculations. Interaction energy and electronic structures were calculated for different orientations of the inhibitor toward the Zn surface. The validity of calculated interaction energy has been verified by the MP2 level of theory. The AIM theory analysis revealed that LHP bound strongly to the Zn surface through its O active site and also its orientation affects greatly the interaction energy. Furthermore, diffusion of LHP through its O atoms active sites was observed with the state-of-the-art DFT-MD simulation during the simulation procedure that agrees well with the experiments for similar molecules adsorbed on the metal surfaces. The presented findings afford a vital insight into the interactive nature of adsorbed inhibitors on metallic surfaces and will help to develop advanced functional materials in coating technologies.

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Accounting for the benefits of technology change: Replacing a zinc-coating process by a water-based organo-metallic coating process

Cited by 24 publications

References 16 publications

Energy constrains to increasing complexity in the biosphere

Energy constrains to increasing complexity in the biosphere

Treatment of hazardous wastewater generated from metal finishing and electro‐coating industry via self‐coagulation: Case study

Understanding the interaction properties of an eco-friendly corrosion inhibitor on Zn (1 1 0) surface: Comprehensive DFT-based MD simulation

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