Hydrometallurgy—an environmentally sustainable technology?

1994 ◽  
pp. 13-26 ◽  
Author(s):  
M. T. Anthony ◽  
D. S. Flett
Keyword(s):  
Sustainable Technology ◽  
Environmentally Sustainable

scholarly journals Rational use environmentally friendly products of aquaculture

2021 ◽  
Vol 4 ◽  
pp. 16-22
Author(s):  
K. Aubakirova ◽  
M. Kulataeva ◽  
М. Satkanov ◽  
Z. Alikulov
Keyword(s):  
Plant Growth ◽  
Environmentally Friendly ◽  
Sustainable Technology ◽  
Agricultural Industry ◽  
Rational Use ◽  
Environmentally Sustainable ◽  
Aquaculture System ◽  
Recirculation System ◽  
Locally Grown

Aquaponics is a new agricultural industry with potential in Kazakhstan. It is the combined culture of fish and plants in a recycling aquaculture system. The plants use the nutrients from fish effluent for growth. Through environmentally sustainable technology, locally grown high value products can be produced and marketed year round. Aquaponics operations are inherently diversified operations as they offer two profit centres: fish and plants. Аquaponics facilities contain contains plant and fish components together in one recirculation system. The fish water, rich in nutrients, is used for plant growth, while the plants are used as biofilters for water regeneration.

scholarly journals From Planned to Transformative Urbanization: Analyzing India’s Policies of Urban Rejuvenation

2019 ◽  
Vol 5 (12) ◽  
pp. 117
Author(s):  
Mihir Bholey
Keyword(s):  
Urban Planning ◽  
Urban Development ◽  
Smart Cities ◽  
Secondary Data ◽  
Urban Transformation ◽  
Current Policy ◽  
Sustainable Technology ◽  
Environmentally Sustainable ◽  
Plan Period

<p>This paper examines India’s urban challenges, successive policies of urban development and their impact on the much needed urban transformation. It examines successive policies, plans, and approaches to meet the ever rising urban challenges from the first Five Year Plan till the end of planning era and also underscores the highlights of urban planning through the entire five-year plan period. In the process, it investigates whether the ubiquitous urban deficit in India is actually due to the so-called 'reluctant urbanization' and whether the current policy of creating hundred smart cities can lead to urban transformation in India. This paper is based on the analysis of the available secondary data from various sources. By critically examining the available secondary data this paper explores whether India’s urban deficit is a result of poor planning or lack of long term vision and strategy to meet the emerging urban challenges. This paper also critically looks into the emerging ICT-driven paradigms and design of the ‘smart cities’ as models of urban transformation and juxtaposes them to India's own vision of creating hundred smart cities to ensure urban transformation. The paper concludes that any urban transformation should be socially inclusive, economically viable and environmentally sustainable. Technology should not be the end rather the means for bringing urban transformation and building smart cities.</p>

scholarly journals Milk protein production by a more environmentally sustainable process: bipolar membrane electrodialysis coupled with ultrafiltration

2018 ◽  
Vol 20 (2) ◽  
pp. 449-456 ◽  
Author(s):  
Sergey Mikhaylin ◽  
Laure Patouillard ◽  
Manuele Margni ◽  
Laurent Bazinet
Keyword(s):  
Protein Production ◽  
Milk Protein ◽  
Bipolar Membrane ◽  
Sustainable Technology ◽  
Environmentally Sustainable ◽  
Bipolar Membrane Electrodialysis

Bipolar membrane electrodialysis coupled with ultrafiltration is an environmentally sustainable technology for milk protein production.

Lignin-Containing Photoactive Resins for 3D Printing by Stereolithography

2018 ◽  
Author(s):  
Jordan T. Sutton ◽  
Kalavathy Rajan ◽  
David P. Harper ◽  
Stephen Chmely
Keyword(s):  
Additive Manufacturing ◽  
New Products ◽  
High Surface ◽  
Fold Increase ◽  
Print Quality ◽  
Renewable Materials ◽  
Lignin Concentration ◽  
Environmentally Sustainable ◽  
Manufacturing Applications ◽  
Modified Lignin

Generating compatible and competitive materials that are environmentally sustainable and economically viable is paramount for the success of additive manufacturing using renewable materials. We report the successful application of renewable, modified lignin-containing photopolymer resins in a commercial stereolithography system. Resins were fabricated within operable ranges for viscosity and cure properties, using up to 15% modified lignin by weight with the potential for higher amounts. A four-fold increase in ductility in cured parts with higher lignin concentration is noted as compared to commercial SLA resins. Excellent print quality was seen in modified lignin resins, with good layer fusion, high surface definition, and visual clarity. These materials can be used to generate new products for additive manufacturing applications and help fill vacant material property spaces, where ductility, sustainability, and application costs are critical.

Lignin-Containing Photoactive Resins for 3D Printing by Stereolithography

2018 ◽  
Author(s):  
Jordan T. Sutton ◽  
Kalavathy Rajan ◽  
David P. Harper ◽  
Stephen Chmely
Keyword(s):  
Additive Manufacturing ◽  
New Products ◽  
High Surface ◽  
Fold Increase ◽  
Print Quality ◽  
Renewable Materials ◽  
Lignin Concentration ◽  
Environmentally Sustainable ◽  
Manufacturing Applications ◽  
Modified Lignin

Generating compatible and competitive materials that are environmentally sustainable and economically viable is paramount for the success of additive manufacturing using renewable materials. We report the successful application of renewable, modified lignin-containing photopolymer resins in a commercial stereolithography system. Resins were fabricated within operable ranges for viscosity and cure properties, using up to 15% modified lignin by weight with the potential for higher amounts. A four-fold increase in ductility in cured parts with higher lignin concentration is noted as compared to commercial SLA resins. Excellent print quality was seen in modified lignin resins, with good layer fusion, high surface definition, and visual clarity. These materials can be used to generate new products for additive manufacturing applications and help fill vacant material property spaces, where ductility, sustainability, and application costs are critical.

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