Separation and Recovery of Iridium(Ⅳ) from a Simulated Secondary Resource Leachate by Extraction - Electrodeposition

2021 ◽  
Author(s):  
Mei Fan ◽  
Shunling Li ◽  
Hui Deng ◽  
Xiaoguo Zhang ◽  
Guoting Luo ◽  
...  
Keyword(s):  
Secondary Resource

Experimental Study on Application of Boron Mud Secondary Resource to Oxidized Pellets Production

2017 ◽  
Vol 36 (7) ◽  
pp. 649-655
Author(s):  
Xiao-Jiao Fu ◽  
Man-Sheng Chu ◽  
Jia-Qi Zhao ◽  
Shuang-Yin Chen ◽  
Zheng-Gen Liu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Blast Furnace ◽  
Furnace Operation ◽  
Blast Furnace Operation ◽  
Fundamental Study ◽  
Secondary Resource ◽  
Oxidized Pellets ◽  
Rich Material ◽  
Boron Mud ◽  
Better Than

AbstractIn order to realize comprehensive and massive treatment of boron mud secondary resource, fundamental study on boron mud applied to oxidized pellets production as additive was carried out in the paper under laboratory conditions. The effects of boron mud on the performance of oxidized pellets were investigated systemically, and boron mud was combined with other boron-rich material innovatively. The results showed that, within certain limits, boron mud can improve properties of oxidized pellets. The bentonite content decreased to 0.3 % when adding 1.0 % boron mud additive and the pellets met blast furnace requirements. With the combination additive content 0.8 %, bentonite content can be further decreased to 0.2 %, and the pellets properties were better than base pellet. Therefore, it was an effective way to reduce environmental pollution and optimize blast furnace operation by developing boron mud secondary resource as pellets additive.

Recycling of a secondary lead smelting matte by selective citrate leaching of valuable metals and simultaneous recovery of hematite as a secondary resource

2017 ◽  
Vol 169 ◽  
pp. 290-296 ◽  
Author(s):  
Eunyoung Kim ◽  
Liesbeth Horckmans ◽  
Jeroen Spooren ◽  
Kris Broos ◽  
Karl C. Vrancken ◽  
...  
Keyword(s):  
Secondary Resource ◽  
Valuable Metals ◽  
Lead Smelting

scholarly journals Formation of regional management strategies of secondary resource handling

Vestnik MGSU ◽  
2019 ◽  
pp. 450-463
Author(s):  
Eduard S. Tskhovrebov
Keyword(s):  
Management Strategies ◽  
Scientific Research ◽  
Regional Level ◽  
Management Systems ◽  
Resource Saving ◽  
Conceptual Base ◽  
Regional Management ◽  
Secondary Resource ◽  
Waste Handling ◽  
The Given

Introduction. The article considers the problems of using regional-developed territorial methods of waste handling including solid municipal waste for forming regional management systems of waste handling. Issues of expedience of forming secondary resource handling management strategies (with plans of measures on their implementation and target parameters) at regional level are studied. The strategies can become fundamental goals for creation and development of waste treatment infrastructure, efficient mechanism of resource economy management and secondary resource handling in the system of Russian industrial, construction and municipal complex. Solving problems of resource saving and involving secondary resources in economic turnover is of great importance at the modern stage of development of Russia. The aim of the study is to develop a conceptual base for forming regional strategies of the secondary resource handling. Materials and methods. The following materials are used for scientific research: legal certificates, specifications and technical documentation on the waste handling, published materials by domestic and foreign scientific researchers on the given subjects. Methods of scientific research are based on application of comparative and expert kinds of the analysis. Results. The article suggests a methodical approach to creation of a concept of typical project of regional strategy of resource saving and secondary resource turnover, to definition of target regional activity indicators in the given area. Conclusions. Scientific novelty of the research is in integrated system approach to solving the resource saving problems and secondary resource handling at the regional level. Introduction of results of this work will allow providing a scientific and methodical substantiation of creation and development of effective regional management systems in the field of secondary resource handling.

Exploring blast furnace slag as a secondary resource for extraction of rare earth elements

2017 ◽  
Vol 34 (4) ◽  
pp. 178-182 ◽  
Author(s):  
A. Abhilash ◽  
P. Meshram ◽  
S. Sarkar ◽  
T. Venugopalan
Keyword(s):  
Blast Furnace ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Blast Furnace Slag ◽  
Secondary Resource ◽  
Furnace Slag

scholarly journals Artificial consortium demonstrates emergent properties of enhanced cellulosic-sugar degradation and biofuel synthesis

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Heejoon Park ◽  
Ayushi Patel ◽  
Kristopher A. Hunt ◽  
Michael A. Henson ◽  
Ross P. Carlson
Keyword(s):  
Biomass Productivity ◽  
Biomass Accumulation ◽  
Vertical Axis ◽  
Feedback Mechanism ◽  
Emergent Properties ◽  
Cellulolytic Enzyme ◽  
E Coli ◽  
Secondary Resource ◽  
Sugar Degradation ◽  
Anoxic Environment

AbstractPlanktonic cultures, of a rationally designed consortium, demonstrated emergent properties that exceeded the sums of monoculture properties, including a >200% increase in cellobiose catabolism, a >100% increase in glycerol catabolism, a >800% increase in ethanol production, and a >120% increase in biomass productivity. The consortium was designed to have a primary and secondary-resource specialist that used crossfeeding with a positive feedback mechanism, division of labor, and nutrient and energy transfer via necromass catabolism. The primary resource specialist was Clostridium phytofermentans (a.k.a. Lachnoclostridium phytofermentans), a cellulolytic, obligate anaerobe. The secondary-resource specialist was Escherichia coli, a versatile, facultative anaerobe, which can ferment glycerol and byproducts of cellobiose catabolism. The consortium also demonstrated emergent properties of enhanced biomass accumulation when grown as biofilms, which created high cell density communities with gradients of species along the vertical axis. Consortium biofilms were robust to oxic perturbations with E. coli consuming O2, creating an anoxic environment for C. phytofermentans. Anoxic/oxic cycling further enhanced biomass productivity of the biofilm consortium, increasing biomass accumulation ~250% over the sum of the monoculture biofilms. Consortium emergent properties were credited to several synergistic mechanisms. E. coli consumed inhibitory byproducts from cellobiose catabolism, driving higher C. phytofermentans growth and higher cellulolytic enzyme production, which in turn provided more substrate for E. coli. E. coli necromass enhanced C. phytofermentans growth while C. phytofermentans necromass aided E. coli growth via the release of peptides and amino acids, respectively. In aggregate, temporal cycling of necromass constituents increased flux of cellulose-derived resources through the consortium. The study establishes a consortia-based, bioprocessing strategy built on naturally occurring interactions for improved conversion of cellulose-derived sugars into bioproducts.

From waste to wealth: recycling the secondary resource from steel ladle as a flux in Si-killed steelmaking process

2018 ◽  
Vol 46 (8) ◽  
pp. 794-799 ◽  
Author(s):  
Sanghamitra Bharati ◽  
V. M. Basavaraja ◽  
R. J. Jagadeesha ◽  
K. Jagteri ◽  
R. Sah ◽  
...  
Keyword(s):  
Steel Ladle ◽  
Steelmaking Process ◽  
Secondary Resource

Tabu Search methods for scheduling a burn-in oven with non-identical job sizes and secondary resource constraints

2008 ◽  
Vol 3 (1/2) ◽  
pp. 119 ◽  
Author(s):  
Chandra Sen Mazumdar ◽  
M. Mathirajan ◽  
R. Gopinath ◽  
A.I. Sivakumar
Keyword(s):  
Tabu Search ◽  
Resource Constraints ◽  
Search Methods ◽  
Secondary Resource ◽  
Tabu Search Methods

Exploring technological alternatives of nutrient recovery from digestate as a secondary resource

2020 ◽  
Vol 134 ◽  
pp. 110379
Author(s):  
E.M. Barampouti ◽  
S. Mai ◽  
D. Malamis ◽  
K. Moustakas ◽  
M. Loizidou
Keyword(s):  
Nutrient Recovery ◽  
Secondary Resource
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