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Related Concept Videos

Bioremediation00:46

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
Bioreactor Design and Operational System01:29

Bioreactor Design and Operational System

Bioreactors are engineered vessels designed to cultivate microorganisms under controlled conditions for industrial bioprocessing. They maintain sterility and allow precise regulation of pH, temperature, oxygen, and nutrient levels to optimize microbial growth and metabolite production. Bioreactors range from small laboratory units of 1 liter to industrial systems holding up to 500,000 liters, though only about 75% of their volume is actively used for fermentation. The remaining headspace...
Scale-Up Processes01:14

Scale-Up Processes

The scale-up of microbial fermentation processes is essential in industrial biotechnology, allowing the transition from laboratory-scale experiments to commercial-scale production while aiming to maintain product yield and quality. This process requires meticulous adjustment of equipment design, process parameters, and contamination control strategies to accommodate increasing culture volumes.At the laboratory scale, cultures are typically maintained in 1 to 10-liter glass or autoclavable...
Bioreactor Controls-I01:28

Bioreactor Controls-I

Maintaining optimal conditions within fermenters is essential for maximizing microbial productivity and ensuring process efficiency. This lesson focuses on key parameters—temperature, foam, pH, carbon dioxide, oxygen, and pressure—and their precise measurement and control strategies in fermentation systems.Temperature ControlTemperature regulation is critical due to the exothermic nature of many fermentation processes. In small laboratory fermenters, temperature is commonly monitored using...
Microbial Bioremediation of Hydrocarbons01:26

Microbial Bioremediation of Hydrocarbons

Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to physical or...
Bioreactor Controls-II01:18

Bioreactor Controls-II

In aerobic fermentations, oxygen is vital for microbial growth and metabolite production. Since air comprises only about 20% oxygen and the gas is poorly soluble in water—just 9 ppm at 20°C—supplying sufficient oxygen becomes a critical challenge, especially in high-demand processes like yeast growth or citric acid production. Even a fully saturated broth may offer only a few seconds of oxygen availability.To address this, sterile or scrubbed air is introduced into the fermentor via a sparger...

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Related Experiment Video

Updated: May 11, 2026

Continuously-stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System Setup and Basic Operation
11:31

Continuously-stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System Setup and Basic Operation

Published on: July 13, 2012

Large-scale modular biofiltration system for effective odor removal in a composting facility.

Yueh-Hsien Lin1, Yu-Pei Chen, Kuo-Ling Ho

  • 1Department of Biological Science and Technology, National Chiao Tung University, Hsin-chu, Taiwan, ROC.

Journal of Environmental Science and Health. Part A, Toxic/Hazardous Substances & Environmental Engineering
|May 28, 2013
PubMed
Summary

A new modular biofiltration system effectively eliminates foul odors from composting facilities. This scalable system demonstrates high removal efficiencies for ammonia and amines, offering stable, long-term odor control with minimal maintenance.

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Biocontained Carcass Composting for Control of Infectious Disease Outbreak in Livestock
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Biocontained Carcass Composting for Control of Infectious Disease Outbreak in Livestock

Published on: May 6, 2010

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Last Updated: May 11, 2026

Continuously-stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System Setup and Basic Operation
11:31

Continuously-stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System Setup and Basic Operation

Published on: July 13, 2012

Biogas Purification through the use of a Microalgae-Bacterial System in Semi-Industrial High Rate Algal Ponds
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Biocontained Carcass Composting for Control of Infectious Disease Outbreak in Livestock
14:34

Biocontained Carcass Composting for Control of Infectious Disease Outbreak in Livestock

Published on: May 6, 2010

Area of Science:

  • Environmental Engineering
  • Biotechnology
  • Waste Management

Background:

  • Composting facilities emit various foul odors, including nitrogen-containing groups, sulfur-containing groups, and short-chain fatty acids.
  • Effective odor control is crucial for mitigating environmental impact and public nuisance from composting operations.

Purpose of the Study:

  • To scale up a laboratory-scale bioreactor into a large-scale modular biofiltration system for treating waste gases from composting facilities.
  • To evaluate the odor removal efficiency and operational stability of the developed modular biofiltration system.

Main Methods:

  • A modular biofiltration system was designed and constructed, capable of processing 34 m(3)/min of waste gases.
  • The system's efficiency was tested for specific odorous compounds like ammonia and amines at known concentrations.
  • Operational parameters, including pressure drop, were monitored to assess long-term stability.

Main Results:

  • The modular biofiltration system achieved high removal efficiencies: 97% for 96 ppm ammonia, 98% for 220 ppm amines, and 100% for other odorous substances.
  • A low pressure drop (<45 mmH2O m(-1)) was observed, indicating the packing carrier's durability and reduced maintenance needs.
  • The system demonstrated long-term operational stability suitable for field applications.

Conclusions:

  • The developed modular biofiltration system is highly effective in eliminating diverse odors from composting facilities.
  • Its compact design, high efficiency, and operational stability make it a viable solution for industrial odor control.
  • The system's low pressure drop suggests reduced operational costs due to infrequent packing carrier replacement.