scholarly journals Waste Valorization through Additive Manufacturing in an Industrial Symbiosis Setting

2020 ◽  
Vol 13 (1) ◽  
pp. 234
Author(s):  
Inês A. Ferreira ◽  
Radu Godina ◽  
Helena Carvalho
Keyword(s):  
Additive Manufacturing ◽  
Raw Materials ◽  
Industrial Processes ◽  
Environmental Concerns ◽  
Manufacturing Processes ◽  
Industrial Symbiosis ◽  
Waste Valorization ◽  
Mutual Benefit ◽  
Waste Streams ◽  
Final Sample

Given the current environmental concerns related to manufacturing, the introduction to the industrial symbiosis concept brought purpose to waste, instead of disposing it in landfills or eliminating it through incineration. The waste generated by industrial processes, or end-of-life products, is redirected to be used as a “new” input in another process by one or more organizations, which is a mutual benefit or a “symbiosis”. Despite its relevancy, the industrial symbiosis concept is marginally explored in the context of additive manufacturing; this emerging technology has disruptive potential regarding the use of different materials as secondary raw materials. This paper presents a systematic literature review regarding industrial symbiosis and additive manufacturing. The main objective is to identify how wastes can be used as input materials to additive manufacturing processes and what exchanges of resources occur in an industrial symbiosis setting. A final sample of 32 documents was reached and analyzed. Five examples of using waste streams in additive manufacturing processes to produce goods were highlighted and explored.

Additive Manufacturing Process and Their Applications for Green Technology

2019 ◽  
pp. 262-281
Author(s):  
Keshavamurthy R. ◽  
Vijay Tambrallimath ◽  
Prabhakar Kuppahalli ◽  
Sekhar N.
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Process ◽  
Raw Materials ◽  
Aerospace Industry ◽  
Green Technology ◽  
Manufacturing Processes ◽  
Additive Process ◽  
Industrial Manufacturing ◽  
Manufacturing Techniques ◽  
Traditional Manufacturing

Growth of nature is an additive process that gives sustainable existence to the structures developed; on the other hand, traditional manufacturing techniques can be wasteful as they are subtractive. Additive manufacturing produces almost nil waste and accordingly preserves raw materials resulting in cost reduction for the procurement of the same. It will also cut down on the carbon emissions that are usually generated from industrial manufacturing. Additive printed objects are lighter as well, making them more efficient, especially when used in the automobile and aerospace industry. Further, the intrinsic characteristics and the promising merits of additive manufacturing process are expected to provide a solution to improve the sustainability of the process. This chapter comprehensively reports on various additive manufacturing processes and their sustainable applications for green technology. The state of the art, opportunities, and future, related to sustainable applications of additive manufacturing have been presented at length.

Physical Characterization of Particleboard Produced with Waste from Ethanol and Sugar Mill

2014 ◽  
Vol 1025-1026 ◽  
pp. 436-439
Author(s):  
Rosane A.G. Batistelle ◽  
Ivaldo D. Valarelli ◽  
André Luis Christoforo ◽  
Francisco Antonio Rocco Lahr ◽  
Eduardo Chahud ◽  
...  
Keyword(s):  
Raw Materials ◽  
Saccharum Officinarum ◽  
Building Construction ◽  
Physical Characterization ◽  
Industrial Processes ◽  
Environmental Concerns ◽  
Bamboo Stem ◽  
Proper Disposal ◽  
Brazilian Standard

The problem of proper disposal of solid waste generated in different industrial processes is one of worldwide environmental concerns nowadays. Thus, this study aimed to establish a new alternative for the disposal of two agro-industrial residues employing them to produce particleboard for different purposes in building construction. The focus was given to the reuse of the sugarcane bagasse (SB) originated during the processing ofSaccharum officinarumfor sugar and ethanol production, and bamboo stem leaves ofDendrocalamus giganteus(BB). For this, six particleboards were produced in the following compositions: with 100% SB, 75% SB + 25% BB, 50% SB+50% BB, 40% SB +60 BB, 25% SB+ 75% BB and 100% BB in the total mass of the composites. The particleboards physical characterization followed Brazilian Standard ABNT NBR 14810-3 to density, moisture content and water absorption. Results showed these raw materials are compatible to particleboard production.

scholarly journals Mapping of building cycle waste for scenarios of industrial symbiosis

2021 ◽  
pp. 131-139
Author(s):  
Antonello Monsù Scolaro ◽  
Lia Marchi ◽  
Sara Corridori
Keyword(s):  
Environmental Impacts ◽  
Raw Materials ◽  
Geographical Location ◽  
Manufacturing Processes ◽  
Industrial Symbiosis ◽  
Process Innovations ◽  
Waste Production ◽  
Waste Valorisation ◽  
Product And Process ◽  
Definition Of

For years, the building sector has been marked by the progressive exploitation of raw materials and the growing production of waste. The product and process innovations, based on waste valorisation starting from their geographical location and identification, prefigure potential reductions of environmental impacts. This paper presents the methodology and findings of the mapping of waste from construction and manufacturing processes, carried out in Sardinia to identify possible scenarios of valorisation. The geographical location of waste production both in construction and manufacturing processes, along with their possible reuse, have allowed the definition of some supply chains which are able to process their own waste, according to industrial symbiosis scenarios.

scholarly journals Additive Manufacturing Under Lunar Gravity and Microgravity

2021 ◽  
Vol 33 (2) ◽  
Author(s):  
B. Reitz ◽  
C. Lotz ◽  
N. Gerdes ◽  
S. Linke ◽  
E. Olsen ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Spare Parts ◽  
Manufacturing Processes ◽  
Complex Structures ◽  
Lunar Gravity ◽  
Limited Extent ◽  
Test Environment ◽  
Manufacturing Tests ◽  
Laser Experiments ◽  
Materials Used

AbstractMankind is setting to colonize space, for which the manufacturing of habitats, tools, spare parts and other infrastructure is required. Commercial manufacturing processes are already well engineered under standard conditions on Earth, which means under Earth’s gravity and atmosphere. Based on the literature review, additive manufacturing under lunar and other space gravitational conditions have only been researched to a very limited extent. Especially, additive manufacturing offers many advantages, as it can produce complex structures while saving resources. The materials used do not have to be taken along on the mission, they can even be mined and processed on-site. The Einstein-Elevator offers a unique test environment for experiments under different gravitational conditions. Laser experiments on selectively melting regolith simulant are successfully conducted under lunar gravity and microgravity. The created samples are characterized in terms of their geometry, mass and porosity. These experiments are the first additive manufacturing tests under lunar gravity worldwide.

scholarly journals Nitrile Synthesis with Aldoxime Dehydratases: A Biocatalytic Platform with Applications in Asymmetric Synthesis, Bulk Chemicals, and Biorefineries

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4466
Author(s):  
Pablo Domínguez de María
Keyword(s):  
Asymmetric Synthesis ◽  
Organic Solvents ◽  
Raw Materials ◽  
Aqueous Media ◽  
Industrial Processes ◽  
Polymer Chemistry ◽  
Fine Chemicals ◽  
Mild Conditions ◽  
Bulk Chemicals ◽  
Recent Developments

Nitriles comprise a broad group of chemicals that are currently being industrially produced and used in fine chemicals and pharmaceuticals, as well as in bulk applications, polymer chemistry, solvents, etc. Aldoxime dehydratases catalyze the cyanide-free synthesis of nitriles starting from aldoximes under mild conditions, holding potential to become sustainable alternatives for industrial processes. Different aldoxime dehydratases accept a broad range of aldoximes with impressive high substrate loadings of up to >1 Kg L−1 and can efficiently catalyze the reaction in aqueous media as well as in non-aqueous systems, such as organic solvents and solvent-free (neat substrates). This paper provides an overview of the recent developments in this field with emphasis on strategies that may be of relevance for industry and sustainability. When possible, potential links to biorefineries and to the use of biogenic raw materials are discussed.

scholarly journals An Additively Manufactured Titanium Alloy in the Focus of Metallography

2021 ◽  
Vol 58 (1) ◽  
pp. 4-31
Author(s):  
C. Fleißner-Rieger ◽  
T. Pogrielz ◽  
D. Obersteiner ◽  
T. Pfeifer ◽  
H. Clemens ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Microstructural Analysis ◽  
Microstructural Characterization ◽  
Melting Process ◽  
Manufacturing Processes ◽  
Ingot Metallurgy ◽  
Lightweight Structures ◽  
Metallographic Preparation ◽  
Fine Structures ◽  
Specific Material

Abstract Additive manufacturing processes allow the production of geometrically complex lightweight structures with specific material properties. However, by contrast with ingot metallurgy methods, the manufacture of components using this process also brings about some challenges. In the field of microstructural characterization, where mostly very fine structures are analyzed, it is thus indispensable to optimize the classic sample preparation process and to furthermore implement additional preparation steps. This work focuses on the metallography of additively manufactured Ti‑6Al‑4V components produced in a selective laser melting process. It offers a guideline for the metallographic preparation along the process chain of additive manufacturing from the metal powder characterization to the macro- and microstructural analysis of the laser melted sample. Apart from developing preparation parameters, selected etching methods were examined with regard to their practicality.

Sign in / Sign up

Export Citation Format

Share Document