Using mathematical methods for designing optimal mixtures for building bricks prepared by solid industrial waste

Wolff, E.H.P.; Schwabe, Wilfrid Keller; Conceição, Samuel Vieira; Santanna-Greco, Jisela Aparecida; Greco, Marcelo; Machado, Raiane Ribeiro

doi:10.1007/s10098-016-1223-y

Cited by 10 publications

(5 citation statements)

References 30 publications

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“…PPI returns all the waste to the same industry, MMI, FI, CI and LFI route to other industries, MMI, CI and PPI hire recycling companies or scrap dealers to disposal, and FI and TBI allow cooperatives or intermediaries to manage the waste. Colling et al (2016), Wolff et al (2017) and Sellitto and Almeida (2019), among other Brazilian studies, arrived at similar conclusions. FI, TBI, CI and LFI route unused waste to controlled landfills.…”

Section: Discussionsupporting

confidence: 80%

Strategies for value recovery from industrial waste: case studies of six industries from Brazil

Sellitto

Almeida

2019

BIJ

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Purpose The purpose of this paper is to present possible strategic actions that aim to recover the value still remaining in industrial waste. Design/methodology/approach The research method is a multiple case study. The sample included six Brazilian companies of the footwear, metal-mechanics, pulp and paper, beverages, chemical and food industries. The study investigated the production process, waste generation, internal reuse, the destination of unused waste, difficulties and strategic challenges. Findings Possible strategies to recover the value remaining in industrial waste are increasing the internal reuse, developing new routes to other industries, reducing the waste generation, increasing the destination to cooperatives or recycling companies, which require studies to understand the legislation and agility in licensing and reducing the logistical cost of the destination. Research limitations/implications The study relies on six case studies. Further research shall encompass an entire industry, starting with hypotheses derived from the cases. Practical implications The main barriers observed for reuse and recycling are uncertainties and ambiguities in the interpretation of legislation, the difficulty for the environmental licensing for recycling operations, excessive logistics costs for exploration opportunities and the lack of research to reduce the waste generation and to increase the internal reuse. Social implications Waste managed by scavengers’ cooperatives can offer jobs to the people of vulnerable communities. Originality/value The study offers robust hypotheses to be tested in a survey on the capacity of a waste management strategy to create competitive advantage in the industry. The study establishes a relationship between waste management and three competitive enablers, compliance, corporate image and green market.

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Section: Discussionsupporting

confidence: 80%

Strategies for value recovery from industrial waste: case studies of six industries from Brazil

Sellitto

Almeida

2019

BIJ

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“…4). The solution of the control problem indicates the possibility of applying the proposed method to study the kinetics of heterogeneous reactions of thermal decomposition in cases when it is impossible for some reasons, to avoid the occurrence of temperatures gradients in the samples under study [26]. The accuracy of determining for the parameters of the kinetic equations is sufficient for practical use [27].…”

Section: The Analysis For the Results Of Calculating Nonisothirmic Ex...mentioning

confidence: 99%

Mathematical Model for the Kinetics of Heterogeneous Reaction of Carbonates Dissociation in the Process of Roasting in the Presence of Temperatures Gradients in Phosphate Raw Material

Бобков

Дли

Федулов

2021

SSP

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The paper deals with the investigation of the parameters for the structural and kinetic rate equation of the carbonates dissociation reaction, in accordance with the obtained results of the nonisothermic experiment, in the conditions of gradient temperature presence in the investigated samples. The most significant is the study of physicochemical transformations kinetic laws, which degree of completeness effects the quality of intermediate products directly, that is decarbonization and sintering. The main part of the process, when phosphorites are heated, takes place in a solid phase. The feature of topochemical reactions is their localization in the aria between a solid phase surface of the initial substance and the reaction products. This surface is formed and changed, as a result of chemical and power technological process for roasting, determining the dependence of the reaction rate on time. The method of thermal analytical experiments is used. The reverse kinetic problem is solved in the temperatures range of the chemical–technological process for roasting phosphate raw materials on conveyor indurating machines. The authors propose a method of approximate calculation for the parameters of kinetic equations which allows to reduce errors, caused by the heat exchange processes in a measuring cell, significantly. The obtained results and their accuracy are suitable for the practical application.

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“…The PPI is the fourth largest industrial energy user because chemical pulping, black liquor evaporation, and drying require enormous amounts of energy [22]. In addition, this industry has traditionally been under scrutiny due to its heavy dependence on water, air and water pollution, intensive use of natural resources, forest degradation and deforestation and waste generation; such issues have been extensively studied in the literature [23][24][25][26][27][28][29][30][31][32][33][34][35] and are discussed in this review. The environmental impacts of the PPI become more apparent considering that this industry generates 1.3% of global greenhouse gas (GHG) emissions (nearly 2% of industrial across its lifecycle [36].…”

Section: Introductionmentioning

confidence: 99%

Decarbonizing the pulp and paper industry: A critical and systematic review of sociotechnical developments and policy options

Rio

Sovacool

Griffiths

et al. 2022

Renewable and Sustainable Energy Reviews

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Using mathematical methods for designing optimal mixtures for building bricks prepared by solid industrial waste

Cited by 10 publications

References 30 publications

Strategies for value recovery from industrial waste: case studies of six industries from Brazil

Strategies for value recovery from industrial waste: case studies of six industries from Brazil

Mathematical Model for the Kinetics of Heterogeneous Reaction of Carbonates Dissociation in the Process of Roasting in the Presence of Temperatures Gradients in Phosphate Raw Material

Decarbonizing the pulp and paper industry: A critical and systematic review of sociotechnical developments and policy options

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