scholarly journals Study on the Adsorption Performance of Various Adsorbents on Hazardous and Noxious Substances

2021 ◽  
Vol 299 ◽  
pp. 03002
Author(s):  
Hongyan Wang ◽  
Wen Chang ◽  
Yujun Tian
Keyword(s):  
Emergency Response ◽  
Vegetable Oil ◽  
Retention Rate ◽  
Saturated Vapor ◽  
Chemical Properties ◽  
Adsorption Performance ◽  
Import And Export ◽  
Physical And Chemical ◽  
And Chemical Properties ◽  
Noxious Substances

Hazardous and noxious substances (HNS) leakage from ship accidents has been one of the major sources of ship pollutions. Due to the varieties of HNS, the complexity of physical and chemical properties, the harmfulness of potential accidents, and the difficulty of accident prevention, HNS leakage could cause huge social and environmental impacts. HNS emergency response methods and technologies are currently in the early and exploring stage. As a big HNS import and export country with the increasing transportation volume, the risk of HNS pollution accidents in the ports has been significantly increasing over the recent years. However, few studies have been conducted regarding the HNS response technology, especially to the adsorption performance of various adsorbents against HNS. Therefore, this study aims to calculate the degree of adsorption of different adsorbents by selecting the representative HNS, which are commonly transported in the volume, for example, benzene, styrene, and vegetable oil. For inert substances with low saturated vapor pressure (vegetable oil and styrene), the degree and rate of adsorption of the investigated materials were found to be inversely proportional to the mass per unit area (area density). Moreover, these investigated adsorbents were shown to exhibit a good adsorption retention rate against inert substances. This study can provide the technical standard to select the most suitable adsorbents for the relevant HNS leakage.

Enhancement of Cu(II) adsorption on activated carbons by non-thermal plasma modification in O2, N2 and O2/N2 atmospheres

2020 ◽  
Vol 18 (4) ◽  
Author(s):  
Long Wu ◽  
Yimeng Cai ◽  
Jiayong Tu ◽  
Shizhe Wang ◽  
Noriyuki Kobayashi ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Thermal Plasma ◽  
Activated Carbons ◽  
Chemical Properties ◽  
Plasma Modification ◽  
Adsorption Performance ◽  
Ft Ir ◽  
Non Thermal Plasma ◽  
Physical And Chemical ◽  
And Chemical Properties

AbstractActivated carbon (AC) was modified by using non-thermal plasma in O2, N2 and O2/N2 atmospheres to increase its Cu(II) adsorption capacity and quantify the influences of the modifying atmospheres. SEM, BET, FT-IR and XPS were used to characterize the surface physical and chemical properties of AC. The results show that the AC modified by using plasma had significantly better Cu(II) adsorption performance than the raw AC. Among the O2, N2 and O2/N2 atmospheres, the AC with plasma modification in N2 showed best Cu(II) adsorption performance and the Cu(II) adsorption capacity was 369.5% higher than the raw AC. The AC modified in O2 atmosphere can form C—COOH groups, while the AC modified in N2 atmosphere can form C—NH2 groups. These two groups are both beneficial for Cu(II) adsorption, where the —NH2 groups are more effective for Cu(II) adsorption compared to —COOH groups. The chemisorption dominated the Cu(II) adsorption on the plasma modified AC and the adsorption performance was dependent on the surface functional groups properties of AC.

Adsorption of Pollutants from Water with Carbon Nanotubes

2013 ◽  
Vol 634-638 ◽  
pp. 192-197
Author(s):  
Jiang Yan Li ◽  
Ying Xiang Jiang
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Properties ◽  
The Novel ◽  
Physical And Chemical Properties ◽  
Inorganic Pollutants ◽  
Adsorption Performance ◽  
Environmental Material ◽  
Physical And Chemical ◽  
And Chemical Properties ◽  
Structure Of Carbon Nanotubes

The unique morphology and structure of carbon nanotubes (CNTs) keep attracting a great number of researchers to explore the novel properties of these materials. The special structure of CNTs determines its physical and chemical properties, mainly reflected in its novel electrical, mechanical properties and excellent adsorption performance. This review summarizes the adsorption properties of CNTs and their properties related to the adsorption of various heavy metal ions, organic and inorganic pollutants from large volumes of aqueous solutions. CNTs is a kind of potential environmental material. This article also put forward future opportunities for CNTs application in environmental systems.

Study on Al2O3 Coated Carbon Sulfur Composite Materials for Lithium-Ion Battery

2013 ◽  
Vol 860-863 ◽  
pp. 952-955
Author(s):  
Xing Hua Liang ◽  
Chao Chao Ye ◽  
Yu Si Liu ◽  
Tian Jiao Liu ◽  
Lin Shi
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Retention Rate ◽  
Chemical Properties ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Impregnation Method ◽  
Physical And Chemical ◽  
Coated Carbon ◽  
And Chemical Properties

Coated Al2O3thin film on the surface of the carbon sulfur composite material by liquid phase impregnation method, then made physical and chemical properties and electrochemical performance analysis on the coated carbon sulfur composite materials.Al2O3reduce the direct contact of the carbon sulfur composite materials and electrolyte, reducing the erosion of electrolyte on cathode materials, improve the cycle performance of carbon sulfur composite material. 0.1C in the 2.1~3.2v cycle 20 to 100 times. The capacity retention rate increased from 70% to 90% after coating.

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

Tailoring microstructures of materials through biomimetics

1993 ◽  
Vol 51 ◽  
pp. 500-501
Author(s):  
Mehmet Sarikaya ◽  
Ilhan A. Aksay
Keyword(s):  
Chemical Properties ◽  
Design And Synthesis ◽  
Structure Sensitive ◽  
Macro Scale ◽  
Methods Of Synthesis ◽  
Successive Level ◽  
Engineering Materials ◽  
Physical And Chemical ◽  
And Chemical Properties ◽  
Synthesis Of Materials

Biomimetics involves investigation of structure, function, and methods of synthesis of biological composite materials. The goal is to apply this information to the design and synthesis of materials for engineering applications.Properties of engineering materials are structure sensitive through the whole spectrum of dimensions from nanometer to macro scale. The goal in designing and processing of technological materials, therefore, is to control microstructural evolution at each of these dimensions so as to achieve predictable physical and chemical properties. Control at each successive level of dimension, however, is a major challenge as is the retention of integrity between successive levels. Engineering materials are rarely fabricated to achieve more than a few of the desired properties and the synthesis techniques usually involve high temperature or low pressure conditions that are energy inefficient and environmentally damaging.In contrast to human-made materials, organisms synthesize composites whose intricate structures are more controlled at each scale and hierarchical order.

Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno
Keyword(s):  
Block Design ◽  
Management Strategies ◽  
Chemical Properties ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Physical And Chemical Properties ◽  
Total N ◽  
Randomized Complete Block Design ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

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