Results 151 to 160 of about 3,232 (197)

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

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.
Han-Qing Yu, Yang Mu, Herbert H P Fang
exaly   +8 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
Gefu Zhu, Guanjing Cai, Chunxing Li
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, Duyue Han, Junyuan Ji
exaly   +3 more sources

Acidogenesis of Gelatin-Rich Wastewater in an Upflow Anaerobic Reactor: Influence of pH and Temperature

Water Research, 2003
The influence of temperature and pH on the acidification of a synthetic gelatin based wastewater was investigated using an upflow anaerobic reactor. Gelatin degradation efficiency and rate, degree of acidification, and formation rate of volatile fatty ...
Herbert H P Fang
exaly   +2 more sources

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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

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, R E Speece, R E Speece   +2 more
exaly   +3 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

Optimization of Anaerobic Acidogenesis by Adding Fe0 Powder to Enhance Anaerobic Wastewater Treatment

Chemical Engineering Journal, 2012
Acidogenesis is responsible to convert complex organics into volatile fatty acids (VFA), whose metabolic rate and production type have important effects on the whole anaerobic digestion.
Yaobin Zhang, Yiwen Liu, Zhiqiang Zhao
exaly   +2 more sources

Conversion of food waste into hydrogen by thermophilic acidogenesis

Biodegradation, 2005
Conversion of food waste into hydrogen by thermophilic acidogenesis was investigated as a function of organic loading rate (OLR), hydraulic retention time (HRT) and pH in a continuous stirred tank reactor. In order to identify hydrogen-producing microorganisms, denaturing gradient gel electrophoresis (DGGE) of the polymerase chain reaction (PCR ...
Shin HS, Youn JH
openaire   +3 more sources