scholarly journals Water Treatment using Chemically Activated Charcoal

2020 ◽  
Vol 5 (3) ◽  
pp. 72-78
Keyword(s):  
Activated Charcoal ◽  
Potassium Dichromate ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Coconut Husk ◽  
Before And After ◽  
Worldwide Phenomenon ◽  
Physical And Chemical ◽  
Absorbance Data ◽  
And Chemical Properties

Water scarcity is a widely experienced problem in several countries in the world like Qatar, Israel, Lebanon and many others. Critical steps have to be taken before this becomes a worldwide phenomenon. The current study focuses on cleaning the greywater, which is about 65% of total wastewater from households, using activated charcoal powder prepared from coconut husk. The material is chemically activated. The shell based activated carbon is used for decolorization of three solution samples: Potassium Permanganate (Purple), Potassium Dichromate (Orange) and Copper Sulphate (Blue) as well as treating the sullage water. Change in normality of above-mentioned samples is calculated before and after treatment by activated charcoal using maximum absorbance data for before treatment as standard. Also, sullage water is treated with activated charcoal and comparison of physical and chemical properties is done before and after the treatment.

The Aging Characteristics of Composite Insulators under Salt Fog Conditions

2014 ◽  
Vol 496-500 ◽  
pp. 231-237 ◽  
Author(s):  
Xiao Chun Chen ◽  
Min Cong Zheng ◽  
Jian Hua Li
Keyword(s):  
Ftir Spectroscopy ◽  
Chemical Properties ◽  
Accelerated Aging ◽  
Physical And Chemical Properties ◽  
Filling Materials ◽  
Aging Properties ◽  
Before And After ◽  
Physical And Chemical ◽  
Salt Fog ◽  
And Chemical Properties

The accelerated aging tests under salt fog conditions were carried out on two types of composite insulators in order to evaluate their anti-aging properties. FTIR spectroscopy, hydrophobicity, and hardness measurements were taken to characterize insulator housings' physical and chemical properties before and after aging. It was found that the aging characteristics were highly dependent on housing profile, aging time, and filling materials.

Corrosion Behavior of Low Carbon Steel in Bioethanol Fuel Blends

2017 ◽  
Vol 263 ◽  
pp. 115-119
Author(s):  
Saravana Kannan Thangavelu ◽  
Pushparaj Ezhumalai
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Low Carbon ◽  
Fuel Blends ◽  
Before And After ◽  
Physical And Chemical ◽  
Bioethanol Fuel ◽  
And Chemical Properties

Bioethanol is a clean and sustainable fuel; on the contrary, the addition of bioethanol to gasoline normally creates corrosion on automobile fuel system materials. In this study, corrosion characteristics of low carbon steel normally encountered in gasoline engine fuel system with bioethanol fuel was investigated. Static immersion tests in different fuel blends E0 (gasoline), E10 and E85 were carried out at room temperature for 1320 h. The mechanical, physical and chemical properties of low carbon steel before and after immersion tests were investigated. Moreover, the physical and chemical properties of fuel blends before and after immersion tests were investigated. The results revealed that the usage of E10 blend is considered feasible for gasoline engines in terms of materials compatibility compared to E85.

Biodegradation of nonlignocellulosic substances II: physical and chemical properties of sawdust before and after use as artificial soil

1999 ◽  
Vol 45 (6) ◽  
pp. 492-497 ◽  
Author(s):  
Sakae Horisawa ◽  
Masahide Sunagawa ◽  
Yutaka Tamai ◽  
Yuki Matsuoka ◽  
Tohru Miura ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Artificial Soil ◽  
Physical And Chemical Properties ◽  
Before And After ◽  
Physical And Chemical ◽  
And Chemical Properties

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.

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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