Results 151 to 160 of about 3,114 (198)

Inhibition on Acidogenesis of Dairy Wastewater by Zinc and Copper

Environmental Technology (United Kingdom), 2001
Acidogenesis of dairy wastewater produced volatile fatty acids, mainly acetate and propionate, plus hydrogen as by-product. Zinc (Zn) inhibited acidogenesis at concentrations over 10 mg l(-1); but at 10 mg l(-1), or less, it enhanced acidogenesis slightly.
Fang, HHP, Yu, HQ
exaly   +7 more sources

[Acidogenesis and fluoride].

Giornale di stomatologia e di ortognatodonzia, 1989
The Authors consider the inhibition of acidogenesis in the dental plaque by topical application of fluoride. After an examination of the actions of fluoride on the bacterial component of dental plaque, the Authors come to the conclusion that inhibition of acidogenesis is one of the possible anticaries mechanism of topical fluoride.
G. Calderari, M. Bardelli, D. Re, V. Bacchetta   +3 more
core   +5 more sources

Thermodynamic analysis of product formation in mesophilic acidogenesis of lactose

Biotechnology and Bioengineering, 2004
AbstractThermodynamic analysis on the acidogenesis of lactose was performed to evaluate the different acidogenic patterns and mechanisms by using Gibbs free energy calculation. Batch acidogenesis of lactose was investigated by using an enriched culture at 37°C, pH 5.5 and varied substrate levels.
Yu, HQ, Fang, HHP, Mu, Y
openaire   +7 more sources

Effect of HRT on Mesophilic Acidogenesis of Dairy Wastewater

Journal of Environmental Engineering, 2000
Effect of hydraulic retention time (HRT) on the acidogenesis of dairy wastewater was studied using an upflow reactor at pH 5.5, 37°C, and six HRTs ranging from 4 to 24 h. Results showed that the degree of acidification increased rapidly with HRT from 28.2% at 4 h to 54.1% at 12 h; further increase of HRT to 16 and 24 h only increased acidification ...
Yu, HQ, Fang, HHP
openaire   +3 more sources

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Anaerobic fermentation of cattle manure: Modeling of hydrolysis and acidogenesis

Water Research, 2007
A mathematical model for the hydrolysis and acidogenesis reactions in anaerobic digestion of cattle manure is presented. This model is based on the premise that particulate hydrolysable fraction of cattle manure is composed of cellulose and hemicellulose that are hydrolyzed at different rates according to a surface-limiting reaction; and, that the ...
Nagamany Nirmalakhandan, Richard E Speece   +1 more
exaly   +3 more sources

Effects of Ammonia on Acidogenesis of Protein-Rich Organic Wastes

Environmental Engineering Science, 2008
This study investigated the influence of ammonia on mesophilic acidogenesis of protein-rich organic waste, examined at initial ammonia concentration of 0–16 g-N L−1 at a neutral pH. VFA was dominant products from protein's acidogenesis, accounting for 80–90%, compared to lactic acid and alcohols.
Pin-Jing He, Fan Lu, Li-Ming Shao
exaly   +2 more sources

Co-Metabolic Mechanism Analysis of Sulfidogenesis and Acidogenesis for Mariculture Solid Waste Treatment: Key Functional Microorganisms and Enzymes

ACS Sustainable Chemistry and Engineering, 2023
Sulfidogenesis is a non-negligible process during the acidogenic fermentation of mariculture solid waste (MSW), and its interactions with acidogenesis are still unclear.
Liang Guo, Deng Yangfan, Mengchun Gao
exaly   +3 more sources

Deeper insights into effect of activated carbon and nano-zero-valent iron addition on acidogenesis and whole anaerobic digestion

Bioresource Technology, 2021
Conductive materials presented promising advantages for enhancing anaerobic digestion (AD) performance. This study evaluated the effects of activated carbon (AC) and nano-zero-valent iron (nZVI) on the acidogenesis and whole AD to explore their potential
Guanjing Cai, Chunxing Li, Xiaofang Pan   +2 more
exaly   +2 more sources

Kinetics of whey–lactose acidogenesis

Biotechnology and Bioengineering, 1989
AbstractThe mixed‐culture anaerobic conversion of lactose to organic acids in a bench‐scale continuous‐flow stirredtank fermentor is considered. The major acidogenic end‐product distribution with respect to the dilution rate are presented. A Monod chemostat model is employed to describe a microbial growth, and the influence on pH of the estimated model
W S, Kissalita, K V, Lo, K L, Pinder
openaire   +2 more sources

Tetrabromobisphenol A (TBBPA) anaerobic biodegradation occurs during acidogenesis

Chemosphere, 2021
This is the first study to bring evidence on the anaerobic biodegradation of TBBPA occurring during acidogenesis in domestic sewage at environmentally relevant concentrations by complex microbial communities. This was accomplished by continuously operating two anaerobic structured bed reactors (ASTBR) for over 100 days under acidogenic (Acidogenic ...
Williane Vieira, Macêdo, Guilherme Henrique, Duarte Oliveira, Marcelo, Zaiat   +2 more
openaire   +2 more sources