scholarly journals Effect of the Electrodes Type on the Energy Efficiency of Microbial Fuel Cells

2018 ◽  
Vol 1 (2) ◽  
pp. 148
Author(s):  
Tsvetomila Ivanova Parvanova-Mancheva ◽  
Elena Razkazova-Velkova ◽  
Martin Martinov ◽  
Stefan Stefanov ◽  
Venko Beschkov
Keyword(s):  
Energy Efficiency ◽  
Wastewater Treatment ◽  
Activated Carbon ◽  
Microbial Fuel Cells ◽  
Biological Treatment ◽  
High Energy ◽  
Energy Output ◽  
The Moment ◽  
Graphite Rods ◽  
High Energy Consumption

Traditional methods for wastewater treatment are associated with high energy consumption. This is why biological treatment of water is more appropriate at the moment. In our previous study, oxidation and reduction of pollutants have been proposed to be carried out in a microbial fuel cell (MFC) designed by our laboratory that simultaneously purifies wastewater from sulfide and nitrate ions and generates electricity. The experiments were carried out with two types of electrodes, graphite rods and paddling of activated carbon using a Fumapem® FFA-3-PK-75 (OH- form) membrane. The results show that the cell has higher energy output when using paddling of activated carbon as an electrode.

scholarly journals Research on the national standard of the minimum allowable values of energy efficiency and energy efficiency grades for key sewage treatment equipment

2018 ◽  
Vol 53 ◽  
pp. 04010
Author(s):  
Huang Jin ◽  
Wang Yueping ◽  
Zhang Xinheng ◽  
Chen Bin ◽  
Shi Ming ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Wastewater Treatment ◽  
Energy Consumption ◽  
Sewage Treatment ◽  
High Energy ◽  
National Standard ◽  
Calculation Methods ◽  
Treatment Equipment ◽  
High Energy Consumption

This paper expounds the background and significance of the national standard of the development on the minimum allowable values of energy efficiency and energy efficiency grades for submersible pushing-flow agitator and rotary aerator in wastewater treatment, and introduces the general principle of the standard, the determination of the minimum allowable values of energy efficiency, the division of the energy efficiency grades for them, as well as the testing and calculation methods. It hopes to eliminate the production of the high energy consumption sewage treatment equipment, and enhance their level of the energy efficiency effectively through development and implementation of the national standard.

Oxygen Supply Method Using Gas-Permeable Film for Wastewater Treatment

1993 ◽  
Vol 28 (7) ◽  
pp. 243-250 ◽  
Author(s):  
Y. Suzuki ◽  
S. Miyahara ◽  
K. Takeishi
Keyword(s):  
Wastewater Treatment ◽  
Energy Consumption ◽  
Oxygen Transfer ◽  
Transfer Rate ◽  
Oxygen Supply ◽  
Oxygen Transfer Rate ◽  
High Energy ◽  
High Rate ◽  
N Removal ◽  
High Energy Consumption

Gas-permeable film can separate air and water, and at the same time, let oxygen diffuse from the air to the water through the film. An oxygen supply method using this film was investigated for the purpose of reducing energy consumption for wastewater treatment. The oxygen transfer rate was measured for the cases with or without biofilm, which proved the high rate of oxygen transfer in the case with nitrifying biofilm which performed nitrification. When the Gas-permeable film with nitrifying biofilm was applied to the treatment of wastewater, denitrifying biofilm formed on the nitrifying biofilm, and simultaneous nitrification and denitrification occurred, resulting in the high rate of organic matter and T-N removal (7 gTOC/m2/d and 4 gT-N/m2/d, respectively). However, periodic sloughing of the denitrifying biofilm was needed to keep the oxygen transfer rate high. Energy consumption of the process using the film in the form of tubes was estimated to be less than 40% of that of the activated sludge process.

Wastewater Treatment using Activated Carbon Nanofiber Anode Microbial Fuel Cells (MFCs)

2012 ◽  
Vol 2012 (10) ◽  
pp. 5448-5457
Author(s):  
Udayarka Karra ◽  
Seetha S. Manickam ◽  
Jeffrey R. McCutcheon ◽  
Baikun Li
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cells ◽  
Activated Carbon ◽  
Microbial Fuel Cells ◽  
Carbon Nanofiber

Diffusion layer characteristics for increasing the performance of activated carbon air cathodes in microbial fuel cells

2016 ◽  
Vol 2 (2) ◽  
pp. 266-273 ◽  
Author(s):  
Xiaoyuan Zhang ◽  
Weihua He ◽  
Wulin Yang ◽  
Jia Liu ◽  
Qiuying Wang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cells ◽  
Activated Carbon ◽  
Diffusion Layer ◽  
Microbial Fuel Cells ◽  
Power Production ◽  
Air Cathode

Air cathode characteristics significantly affected power production of microbial fuel cells during wastewater treatment.

Ozone and UV – a tool for multi-barrier concepts in water treatment

2006 ◽  
Vol 6 (4) ◽  
pp. 17-25 ◽  
Author(s):  
A. Ried ◽  
J. Mielcke
Keyword(s):  
Drinking Water ◽  
Wastewater Treatment ◽  
Activated Carbon ◽  
Water Treatment ◽  
Biological Treatment ◽  
Municipal Wastewater ◽  
Drinking Water Treatment ◽  
Additional Treatment ◽  
Municipal Wastewater Treatment ◽  
Treatment Processes

The use of ozone and/or UV for water treatment processes is often a combination of an ozone and/or UV-step with additional treatment steps, e.g. biological treatment, flocculation, filtration and activated carbon. Therefore, it is necessary to develop an optimized combination of these different steps. This article will demonstrate the advantages presenting two examples for drinking water treatment and two examples for municipal wastewater treatment.

scholarly journals PROPOSING A SYSTEMATIC METHOD FOR CREATING AN ENERGY AUDIT TOOLKIT FOR COPRA PROCESSING ENTERPRISES

2011 ◽  
Vol 14 (3) ◽  
pp. 39-49
Author(s):  
Thanh Van Tran ◽  
Ha Thi Ngoc Ho ◽  
Hai Thanh Le
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
High Energy ◽  
Energy Audit ◽  
Pilot Projects ◽  
Self Assessment ◽  
Systematic Method ◽  
Processing Industry ◽  
Production Processes ◽  
High Energy Consumption

Coconut processing is one of a typical industral sector of Ben Tre Province. Due to the high energy consumption chaterization, it has been selected to perform the pilot projects of promoting cleaner production and energy efficiency. Energy audit is a suggested measure to identifine opportunities and solutions for energy savings. However it is quite an expertise-demanding and timeconsuming procedure, therefore still a few number of plants have applied energy audit for their production processes. For all those reasons, there is a need of an automatic energy audit toolkit which can help enterprises in self–assessment of the energy using and performing of energy saving measures. This reseach aims at proposing a systematic method for creating an energy audit toolkit for copra processing enterprises which is expected to be a development initiative for coconut processing industry.

Study on Eco-Clothing with Multiple Style Transformation in the Background of Cyclic Economy

2013 ◽  
Vol 694-697 ◽  
pp. 3239-3242 ◽  
Author(s):  
Wei Zhen Wang ◽  
Shu Lian Yu ◽  
Qi Zhen Wang ◽  
Yu Bing Luan ◽  
Jing Zhen Wang ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Life Cycle ◽  
Energy Consumption ◽  
Raw Materials ◽  
Apparel Industry ◽  
High Energy ◽  
Environment Friendly ◽  
Clothing Style ◽  
Consumption Situation ◽  
High Energy Consumption

In view of high energy consumption situation in the apparel industry in the background of cyclic economy, the author conducts technical experiment for clothing style change according to transformation design of clothing structure elements, and establishes the environmental protection philosophy of enabling raw materials for one garment to satisfy the function of raw materials for two or more garments. This not only maximizes the energy efficiency of clothing materials, but also optimizes life cycle of products, and accordingly promotes the energy-saving and environment-friendly eco-civilization construction in the apparel industry.

Implementation of Microbial Fuel Cells (MFCs)-Based Wastewater Treatment

2013 ◽  
Vol 684 ◽  
pp. 230-233 ◽  
Author(s):  
Young Ho Ahn
Keyword(s):  
Wastewater Treatment ◽  
Microbial Fuel Cells ◽  
Treatment Process ◽  
Domestic Wastewater ◽  
High Energy ◽  
Air Cathode ◽  
Effluent Quality ◽  
Domestic Wastewater Treatment ◽  
Secondary Clarifier ◽  
Balance Analysis

This paper provides feasibility estimation for actual domestic wastewater treatment under assumptions of a flow of 10,000 m3/d (about 40,000 capita), when air cathode MFCs configurations were adopted. Temperature-phased (mesophilic-ambient) process configurations in which can achieve either better effluent quality (i.e. maximizing treatment) or high energy recoveries is schematized. The performance used in the mass balance analysis of the treatment process conducted here compared with typical values in conventional biological wastewater treatment. Various advantages of using MFCs for wastewater treatment, including energy saving, less sludge production (and perhaps the lack of a need for a secondary clarifier), and no need for sludge handling, etc., were also addressed.

Case Study on Improving Energy Efficiency of Garment Materials by Women's Wear Style Transformation Design

2013 ◽  
Vol 712-715 ◽  
pp. 2870-2873
Author(s):  
Wei Zhen Wang ◽  
Cheng Gang Zheng ◽  
Lin Sun ◽  
Shi Wang ◽  
Man Qian Wang ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Structural Design ◽  
Design Method ◽  
High Energy ◽  
Green Economy ◽  
Environment Friendly ◽  
Clothing Style ◽  
Consumption Situation ◽  
High Energy Consumption

In view of high energy consumption situation in the apparel industry in the background of green economy, the author explores the multi-functional structural design method for single garment and the diversified wearing forms of single product according to the study on clothing style change, so as to satisfy the individualized and special needs of consumers. This not only improves the energy efficiency of clothing materials, but also optimizes life cycle of products, and accordingly promotes the environment-friendly clothing philosophy and provides new solution to the contradiction between mass production and individualized consumption of garments.

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