Microbially Induced Corrosion in the Mineral Processing Industry

2010 ◽  
Vol 95 ◽  
pp. 73-76
Author(s):  
Margarita Stoytcheva ◽  
Benjamin Valdez ◽  
Roumen Zlatev ◽  
Michael Schorr ◽  
Monica Carrillo ◽  
...  
Keyword(s):  
Thiobacillus Ferrooxidans ◽  
Oxygen Demand ◽  
Biological Oxygen Demand ◽  
Microbiologically Influenced Corrosion ◽  
Oxygen Probe ◽  
Processing Industry ◽  
Measuring Cell ◽  
Microbially Induced Corrosion ◽  
Time Determination

A method for real time determination of microbiologically influenced corrosion (MIC) rate provoked by bacteria Thiobacillus Ferrooxidans was developed and applied on carbon steel samples. It is based on biological oxygen demand (BOD) determination of solutions contained Thiobacillus Ferrooxidans performed by the application of a Clark type oxygen probe in especially designed measuring cell.

A new method for the determination of biological oxygen demand in domestic wastewater by headspace gas chromatography

2013 ◽  
Vol 1308 ◽  
pp. 32-36 ◽  
Author(s):  
Juan-Juan Gu ◽  
Hui-Chao Hu ◽  
Xin-Sheng Chai ◽  
Ying-Xin Tian ◽  
Donald G. Barnes ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Biological Oxygen Demand ◽  
New Method ◽  
Headspace Gas Chromatography ◽  
Headspace Gas

scholarly journals Evaluation of the Phytoplanktons Species Diversity, Distribution and Physicochemical Characteristics of Pindiga Pond in Gombe State of Nigeria

1970 ◽  
Vol 23 (10) ◽  
pp. 1835-1839
Author(s):  
Y. Abdullahi ◽  
P. Moses ◽  
V.B. Kwaya
Keyword(s):  
Species Diversity ◽  
Dissolved Oxygen ◽  
Physicochemical Parameters ◽  
Oxygen Demand ◽  
Pond Water ◽  
Physicochemical Characteristics ◽  
Biological Oxygen Demand ◽  
Standard Procedures

Studies were conducted on the diversity, distribution and physicochemical characteristics of phytoplanktons of Pindiga Pond. Water and phytoplankton samples were collected for three months at ten (10) days interval. The objective of the present research is to determine the phytoplanktons distribution and physicochemical characteristics of the Pond. Standard procedures were adopted for determination of physicochemical parameters viz; Temperature, pH, Transparency, Conductivity, Nitrate, Phosphate, Dissolved oxygen (DO), Biological Oxygen Demand (BOD).These physicochemical characteristics were observed to have varied within the period of the study. Seventeen (17) genus, Thirteen (13) orders, four (4) classes, and four (4) division of phytoplankton were identified, and the class Bacillariophyceae (46 %) was the highest percentage recorded during the study, Chlorophyceae (32 %), Euglenophyceae (19 %) and Cyanophyceae (3%) the least in occurrence and distribution. The study also revealed that pindiga pond had luxuriant phytoplanktons flora, diverse and seasonal with fluctuating pattern of physicochemical characteristics recorded. The physicochemical characteristics were also within productive limit in Pindiga pond.Key words: Phytoplanktons, Diversity, Distribution, Pond

The Removal Mechanisms of Organic Compounds in Household Wastewater by Soil Sediment

2015 ◽  
Vol 804 ◽  
pp. 263-266
Author(s):  
Varinthorn Boonyaroj ◽  
Jiraporn Jinasam ◽  
Warangkana Nachailan
Keyword(s):  
Organic Compounds ◽  
Sediment Accumulation ◽  
Oxygen Demand ◽  
Biological Oxygen Demand ◽  
Time Intervals ◽  
Adsorption Experiment ◽  
Adsorption Mechanisms ◽  
Soil Sediment ◽  
Household Wastewater

The main reasons which caused the water pollution in canals, especially in Khlong Prem Prachakorn, are untreated, and improperly treated household, accumulation from flood situation in Bangkok. Soil sediment accumulation in canal contain many types of organic compounds. However, contaminant that causes an increase health risk is the mostly concern. This research was performed to investigate the organic compounds in household wastewater removal under biodegradation, and adsorption mechanisms by using soil sediment taken from Khlong Prem Prachakorn, Bangkok, Thailand. For the adsorption experiment, inactivated sludge was used for determining adsorption capacity of soil sediment. The samples were slowly mixed at 30 rpm and taken at constant time intervals for the determination of biological oxygen demand (BOD), and chemical oxygen demand (COD) reduction. The influent BOD, and COD concentration were found 63 mg/l, and 354 mg/l, respectively. The results indicated that the concentration of BOD, and COD were decreasing rapidly by both biodegradation and adsorption mechanisms within 12 h. In this research, the biological activity by microorganisms in soil sediment as an important role and helped to remove organic compound in household wastewater.

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