scholarly journals A Review on the Effect from Steel Slag on the Growth of Microalgae

Processes ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 769
Author(s):  
Qing Yu ◽  
Tian-Ji Liu ◽  
Shuang Cai ◽  
Fu-Ping Wang ◽  
Di Gao ◽  
...  
Keyword(s):  
Developing Countries ◽  
Steel Slag ◽  
Metallurgical Industry ◽  
Utilization Rate ◽  
Dissolution Behavior ◽  
Broad Application ◽  
Acidic Solutions ◽  
Comprehensive Utilization ◽  
Pre Treatment ◽  
Application Prospects

As a by-product from the metallurgical industry, steel slag contains a large amount of metal elements. In many developing countries, the output of steel slag is huge and the comprehensive utilization rate is low, hence the development of a novel application method for steel slag is of great significance to increase its utilization rate to improve the environment. This paper reviewed the dissolution behavior of Fe, P, Ca and silicate of steel slag under seawater and acidic solutions as an application in the cultivation of different microalgae, such as diatoms, spirulina, and chlorella. This review clarifies that proper pre-treatment of steel slag can effectively increase the dissolved elements of steel slag in the solution and provide more nutrients for the growth of microalgae. Microalgae cultivated with steel slag as a nutrient can be used to produce biodiesel which has a very broad application prospects for cleaner production and environmental protection.

scholarly journals An overview of resource utilization of steel slag as absorbent material for waste water treatment

2020 ◽  
Vol 199 ◽  
pp. 00017
Author(s):  
Chan Yu ◽  
Wei Zhang ◽  
Fei Gao ◽  
Huawei Huang ◽  
Liangyuan Zhao
Keyword(s):  
Waste Water ◽  
Sustainable Development ◽  
Water Treatment ◽  
Resource Utilization ◽  
Rapid Development ◽  
Waste Water Treatment ◽  
Steel Slag ◽  
Research Progress ◽  
Utilization Rate ◽  
Comprehensive Utilization

With the rapid development of the steel industry, the accumulation of steel slag increases year by year, occupying a large amount of farm land and leading the problem of environmental pollution and safety hazards. The current comprehensive utilization rate of steel slag is still very low in China, far behind the developed countries. The low comprehensive utilization rate of steel slag is a stumbling block to the green and sustainable development of the Yangtze River Economic Belt. Improving the comprehensive utilization rate of steel slag is an imperative way to resolve these problems and to realize sustainable development for the steel enterprise. Steel slag presents porous structure and large surface area; in addition, it is easy to separate from water due to its high density. Therefore, the application of steel slag in industrial waste water treatment has received intensive attention in recent years. This paper systematically introduced the research progress of steel slag resource utilization as absorbent materials for waste water and proposed the important improved method and critical problems for steel slag as absorbent materials.

scholarly journals Synthesis of KAlSiO4 by Hydrothermal Processing on Biotite Syenite and Dissolution Reaction Kinetics

Minerals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 36
Author(s):  
Jiangyan Yuan ◽  
Hongwen Ma ◽  
Zheng Luo ◽  
Xi Ma ◽  
Qian Guo
Keyword(s):  
Reaction Rate ◽  
Reaction Order ◽  
Dissolution Behavior ◽  
Precipitation Process ◽  
Hydrothermal Processing ◽  
Hydrothermal Conditions ◽  
Effective Utilization ◽  
Comprehensive Utilization ◽  
Dissolution Reaction ◽  
Significant Process

To make potassium from K-bearing rocks accessible to agriculture, processing on biotite syenite powder under mild alkaline hydrothermal conditions was carried out, in which two types of KAlSiO4 were obtained successfully. The dissolution-precipitation process of silicate rocks is a significant process in lithospheric evolution. Its effective utilization will be of importance for realizing the comprehensiveness of aluminosilicate minerals in nature. Two kinds of KAlSiO4 were precipitated in sequence during the dissolution process of biotite syenite. The crystal structures of two kinds of KAlSiO4 were compared by Rietveld structure refinements. The kinetics model derived from geochemical research was adopted to describe the dissolution behavior. The reaction order and apparent activation energy at the temperature range of 240–300 °C were 2.992 and 97.41 kJ/mol, respectively. The higher dissolution reaction rate of K-feldspar mainly relies on the alkaline solution, which gives rise to higher reaction order. During the dissolution-precipitation process of K-feldspar, two types of KAlSiO4 with different crystal structure were precipitated. This study provides novel green chemical routes for the comprehensive utilization of potassium-rich silicates.

Compactability Analysis of Soil-Rock Mixture

2013 ◽  
Vol 423-426 ◽  
pp. 1001-1005
Author(s):  
Lin Ping Yu ◽  
Zhi Yun Wang
Keyword(s):  
Influencing Factors ◽  
Building Material ◽  
Engineering Properties ◽  
Broad Application ◽  
Compaction Test ◽  
Object Of Study ◽  
Application Prospects

With soil-rock mixture (SRM) as the object of study and compaction test as the means, the paper studies the compactability of the SRM and analyzes the compactability influencing factors and engineering properties after compaction. Studies show that the soil engineering properties of compacted SRM are greatly improved, so it is a building material with broad application prospects.

Linear Rail Space Dynamic Scheduling Technology for Multi-Tasking Hybrid Assembly Sections

2012 ◽  
Vol 271-272 ◽  
pp. 650-656
Author(s):  
Zhi Bing Lu ◽  
Ai Min Wang ◽  
Cheng Tong Tang ◽  
Jing Sheng Li
Keyword(s):  
Production Scheduling ◽  
Dynamic Scheduling ◽  
Scheduling Algorithm ◽  
Real Data ◽  
Utilization Rate ◽  
Filter Method ◽  
Scheduling Problem ◽  
Rule Based ◽  
Comprehensive Utilization ◽  
Space Production

For the rapid response to production scheduling problem driven by high-density production tasks, a dynamic scheduling technology for the large precision strip products assembly with a mixture of task time nodes and line-rail space is proposed. A scheduling constrained model containing coverage, proximity, timeliness and resource is established. A linear rail space production scheduling technology using heuristic automatic scheduling and event-driven method is put forward. The time rule based on delivery and single completion assembly is formed, at the same time the space rule based on the adjacent rail and comprehensive utilization is researched. Supposing the privilege of single product assembling as the core, the scheduling parts filter method based on multiple constraints and former rules. For the space layout problem, a clingy forward and backward algorithms is proposed to judge the assemble position regarding the space comprehensive utilization rate. The classification of the various disturbances in the actual production is summarized. Three basic algorithms are proposed, including insertion, moving and re-scheduling algorithm, in order to solve the assembly dynamic scheduling problem driven by production disturbance events. Finally, take rocket as the example， the rocket assembly space production scheduling system is developed, combining with the proposed algorithm. The practicability of the system is validated using real data.

Quantum blockchain system

2021 ◽  
pp. 2150343
Author(s):  
Xiao-Jun Wen ◽  
Yong-Zhi Chen ◽  
Xin-Can Fan ◽  
Zheng-Zhong Yi ◽  
Zoe L. Jiang ◽  
...  
Keyword(s):  
Quantum Teleportation ◽  
Secure Communication ◽  
Quantum Computers ◽  
Computing Power ◽  
Broad Application ◽  
Digital Currency ◽  
Blockchain Technology ◽  
Quantum Secure Communication ◽  
Complexity Problem ◽  
Application Prospects

Blockchain technology represented by Bitcoin and Ethereum has been deeply developed and widely used due to its broad application prospects such as digital currency and IoT. However, the security of the existing blockchain technologies built on the classical cryptography depends on the computational complexity problem. With the enhancement of the attackers’ computing power, especially the upcoming quantum computers, this kind of security is seriously threatened. Based on quantum hash, quantum SWAP test and quantum teleportation, a quantum blockchain system is proposed with quantum secure communication. In classical cryptographic theory sense, the security of this system is unconditional since it has nothing to do with the attackers’ computing power and computing resources.

MoS2 nanosheets chemically modified with metal phthalocyanine via mussel-inspired chemistry for multifunctional memristive devices

2021 ◽  
Author(s):  
Qing Yan ◽  
Fei Fan ◽  
Chen Sun ◽  
Mohamed E. El-Khouly ◽  
Hongfei Liu ◽  
...  
Keyword(s):  
Artificial Intelligence ◽  
Metal Phthalocyanine ◽  
Mos2 Nanosheets ◽  
Broad Application ◽  
Chemically Modified ◽  
Application Prospects

Memristive devices with in-memory computing functions have broad application prospects in the field of artificial intelligence. The development of memristive devices that integrate multi-functions of nonvolatile rewritable memory and biomimicking...

scholarly journals Fabrication of Monolithic Catalysts: Comparison of the Traditional and the Novel Green Methods

Catalysts ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 981 ◽  
Author(s):  
Zexuan Wang ◽  
Kunfeng Zhao ◽  
Bei Xiao ◽  
Peng Gao ◽  
Dannong He ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
High Efficiency ◽  
Utilization Rate ◽  
The Novel ◽  
Surface Deposition ◽  
Advantages And Disadvantages ◽  
Monolithic Catalysts ◽  
Mass And Heat Transfer ◽  
Application Prospects

Monolithic catalysts have great industrial application prospects compared to powdered catalysts due to their low pressure drop, the high efficiency of mass and heat transfer, and recyclability. Deposition of active phases on the monolithic carriers dramatically increases the utilization rate and has been attracting continuous attention. In this paper, we reviewed the traditional (impregnation, coating, and spraying) and novel (hydrothermal and electrodeposition) strategies of surface deposition integration, analyzed the advantages and disadvantages of both ways, and then prospected the possible directions for future development of integration technologies.

Design for New Actuator Based on Electroactive Polymer

2013 ◽  
Vol 579-580 ◽  
pp. 804-807
Author(s):  
Zhong Yao Wu ◽  
Tian Feng Zhao ◽  
Jian Bo Cao ◽  
Shi Ju E ◽  
Chun Xiao Chen
Keyword(s):  
Polymer Material ◽  
Dielectric Elastomer ◽  
Optimal Performance ◽  
Electroactive Polymer ◽  
Good Prospect ◽  
Broad Application ◽  
Design Scheme ◽  
New Type ◽  
Simulation Results ◽  
Application Prospects

Dielectric elastomer is a kind of electroactive polymer material with optimal performance. As actuator material, dielectric elastomer has shown a good prospect. Based on studying the principle of electroactive polymer, a new type of cylindrical actuator was designed. Its 3-D figure and 2-D dimension drawing was finished by UG software. The animation simulation of the actuator was studied. The simulation results verified the feasibility of design scheme. Electroactive polymer will have broad application prospects in the field of actuator.

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