Revealing the Factors Infl uencing a Fermentative Biohydrogen Production Process Using Industrial Wastewater as Fermentation Substrate

2016 ◽  
pp. 304-337
Keyword(s):  
Production Process ◽  
Industrial Wastewater ◽  
Biohydrogen Production ◽  
Fermentation Substrate

Industrial Wastewater Treatment and Reuse in a Developing Country Context: Evidence at the Firm Level from Ecuador

2018 ◽  
Vol 04 (02) ◽  
pp. 1750005 ◽  
Author(s):  
Oscar Zapata
Keyword(s):  
Wastewater Treatment ◽  
Production Process ◽  
Developing Country ◽  
Industrial Wastewater ◽  
Public Perception ◽  
Wastewater Reuse ◽  
Industrial Sector ◽  
Wastewater Management ◽  
Firm Level ◽  
Local Conditions

Wastewater reuse constitutes an alternative supply source of water. It not only increases the amount of water available but also reduces water pollution. The benefits and costs of this practice, and the public perception of reuse are the focus of several studies. However, the evidence on industrial wastewater reuse at the firm level remains scant. This paper is aimed at filling this gap by presenting evidence on the determinants of both wastewater treatment and reuse practices in a developing country context. I use firm level data from the Survey on Firms’ Environmental Practices of Ecuador. My results show that wastewater management in general, and reuse in particular, are still limited practices in the industrial sector of the country. My results suggest that firm’s decisions to treat and reuse depends on long-term firm’s characteristics, such as annual investment, the nature of the production process and local conditions, as well as the scale of production and water consumption. Volumes of wastewater treated and reused depend positively on the amount of water used in the production process and the firm’s annual level of investment or expenditure. The cost of the practice only affects the volume treated. The results suggest that targeting water-intensive industry sectors and the costs of wastewater treatment can play an important role for a more sustainable use of water in the industrial sector of Ecuador.

Improvement of Anaerobic Operation and Isolation Culture on Hydrogen-Producing and Fermentative Bacteria

2011 ◽  
Vol 183-185 ◽  
pp. 895-899
Author(s):  
Yong Feng Li ◽  
Jian Yu Yang ◽  
Xin Yu Pan ◽  
Jing Wei Zhang ◽  
Wei Han
Keyword(s):  
Production Process ◽  
Culture Media ◽  
Enrichment Culture ◽  
Biohydrogen Production ◽  
Culture Bottle ◽  
Fermentative Bacteria ◽  
Bacterium Growth

Isolation and culture of hydrogen-producing and fermentative bacteria is an important foundation on biohydrogen production process. There are complicated operation and composition in present anaerobic techniques and culture media. Hungate technique was improved and plate of culture bottle was established by comparing anaerobic methods and bacterium growth. Isolation and enrichment culture media were confirmed by the test of different composition and the species and amount of hydrogen-producing and fermentative bacterium. 550 bacterium strains were isolated by the anaerobic operation.

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