scholarly journals Short communication: Cyclodextrin nanosponges in the removal of organic matter to produce water for power generation

Water SA ◽  
2018 ◽  
Vol 34 (5) ◽  
pp. 657 ◽  
Author(s):  
B.B. Mamba ◽  
R.W. Krause ◽  
T.J. Malefetse ◽  
G Gericke ◽  
S.P. Sithole
Keyword(s):  
Power Generation ◽  
Organic Matter ◽  
Short Communication ◽  
Produce Water ◽  
Cyclodextrin Nanosponges

Cyclodextrin nanosponges in the removal of organic matter for ultrapure water in power generation

2009 ◽  
Vol 58 (4) ◽  
pp. 299-304 ◽  
Author(s):  
B. B. Mamba ◽  
R. W. Krause ◽  
T. J. Malefetse ◽  
G. Gericke ◽  
S. P. Sithole
Keyword(s):  
Power Generation ◽  
Organic Matter ◽  
Ultrapure Water ◽  
Cyclodextrin Nanosponges

Electricity generation through a photo sediment microbial fuel cell using algae at the cathode

2017 ◽  
Vol 76 (12) ◽  
pp. 3269-3277 ◽  
Author(s):  
B. Neethu ◽  
M. M. Ghangrekar
Keyword(s):  
Power Generation ◽  
Organic Matter ◽  
Microbial Fuel Cells ◽  
Carbon Capture ◽  
Algal Growth ◽  
Oxygen Demand ◽  
Sediment Organic Matter ◽  
Overlying Water ◽  
Organic Matter Removal ◽  
Removal Efficiencies

Abstract Sediment microbial fuel cells (SMFCs) are bio-electrochemical devices generating electricity from redox gradients occurring across the sediment–water interface. Sediment microbial carbon-capture cell (SMCC), a modified SMFC, uses algae grown in the overlying water of sediment and is considered as a promising system for power generation along with algal cultivation. In this study, the performance of SMCC and SMFC was evaluated in terms of power generation, dissolved oxygen variations, sediment organic matter removal and algal growth. SMCC gave a maximum power density of 22.19 mW/m2, which was 3.65 times higher than the SMFC operated under similar conditions. Sediment organic matter removal efficiencies of 77.6 ± 2.1% and 61.0 ± 1.3% were obtained in SMCC and SMFC, respectively. With presence of algae at the cathode, a maximum chemical oxygen demand and total nitrogen removal efficiencies of 63.3 ± 2.3% (8th day) and 81.6 ± 1.2% (10th day), respectively, were observed. The system appears to be favorable from a resources utilization perspective as it does not depend on external aeration or membranes and utilizes algae and organic matter present in sediment for power generation. Thus, SMCC has proven its applicability for installation in an existing oxidation pond for sediment remediation, algae growth, carbon conversion and power generation, simultaneously.

Water repellence in sandy soils of South-Western Australia. II. Some chemical characteristics of the hydrophobic skins

Soil Research ◽  
1972 ◽  
Vol 10 (1) ◽  
pp. 35 ◽  
Author(s):  
FJ Roberts ◽  
BA Carbon
Keyword(s):  
Organic Matter ◽  
Diethyl Ether ◽  
Cold Water ◽  
Sandy Soils ◽  
Prolonged Treatment ◽  
Water Repellent ◽  
Chemical Characteristics ◽  
Produce Water ◽  
Water Repellence ◽  
Humic Fraction

The hydrophobic organic skins on sand grains were resistant to removal by solvents such as cold water, concentrated acid, diethyl ether, ethanol, benzene, chloroform, and acetone. Prolonged treatment with hot diethyl ether, ethanol, and benzene removed part of the coating. Treatment with dilute solutions of alkali removed the skin as suspended particles. Compounds within the very stable humic fraction of the soil organic matter appeared to be mainly responsible for water repellence in soils. Deposits of fresh organic materials could also produce water repellent properties.

scholarly journals Short Communication: The diversity of epipelic diatoms as an indicator of shrimp pond environmental quality in Lampung Province, Indonesia

2018 ◽  
Vol 19 (4) ◽  
pp. 1220-1226
Author(s):  
SUPONO SUPONO ◽  
SITI HUDAIDAH
Keyword(s):  
Organic Matter ◽  
Short Communication ◽  
Sediment Quality ◽  
Organic Matter Content ◽  
Matter Content ◽  
Total Alkalinity ◽  
Exploratory Research ◽  
Shrimp Ponds ◽  
Water And Sediment ◽  
Epipelic Diatoms

Supono, Hudaidah S. 2018. Short Communication: The diversity of epipelic diatoms as an indicator of shrimp pondenvironmental quality in Lampung Province, Indonesia. Biodiversitas 19: 1220-1226. Epipelic diatoms live by attaching to sediment.Their existence is strongly affected by water and sediment quality. The purpose of this research was to analyze the structure ofepipelic diatom populations on the bottom of shrimp ponds and to determine the correlation between epipelic diatom diversityand the quality of water and of pond bottom sediment. This exploratory research was conducted on twelve shrimp ponds during thewater preparation period (pre-stocking). Data were collected to analyze the correlation between water and sediment qualities. The resultsshowed that Nitzschia and Pleurosigma were the dominant epipelic diatoms in the shrimp ponds. Epipelic diatom diversity in shrimpponds was affected by water quality parameters (namely total alkalinity, organic matter and nitrate) as well as sediment qualityparameters (namely cation exchange capacity, clay content and organic matter content).

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