Influence of Temperature on Hydrolysis Acidification of Food Waste

He, Manni; Sun, Yu; Zou, Dexun; Yuan, Hairong; Zhu, Baoning; Li, Xiujin; Pang, Yunzhi

doi:10.1016/j.proenv.2012.10.012

Cited by 104 publications

(39 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Minimum value of VFA -9.39 g/dm 3 was found in bioreactor without pH control. Comparing those data with the results of other authors, similar effects achieved He et al [22], who obtained VFA concentration of 18.46 g/dm 3 from food wastes and Zhang et al [23] reaching up to 36 g/dm 3 of VFA from kitchen wastes, both at pH 7. The results published by Hong et al [24] also showed that pH 7 was optimal for VFA synthesis.…”

Section: Resultssupporting

confidence: 90%

Effect of pH on the Production of Volatile Fatty Acids in Dark Fermentation Process of Organic Waste

Grzelak

Ślężak

Krzystek

et al. 2018

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

The aim of this study was to investigate the effect of pH on the dark fermentation process of kitchen waste by specifying the composition of the volatile fatty acids (VFA), H2 and by drawing the carbon balance. Studies were carried out in 8 dm 3 batch bioreactor in mesophilic conditions. The kitchen waste from the city of Lodz were used as a substrate. Based on the study, it was observed that most of the VFA was produced during the first two days of the process, while in the following days the production was diminished. The highest production of VFA (19.5 g/dm 3 ) was obtained in the bioreactor, where the pH was 7 and 8. Analyzing the produced VFA it was observed that mostly the acetic and butyric acid had been produced. Most of acetic acid (over 70 %) was obtained in fermenter with pH 7 and 8. In contrast, most of the butyric acid (over 40 %) was in the bioreactor with a pH of 6. Production of H2 was in the range from 4.29 to 26.5 dm 3 , wherein the largest amount of H2 was created in the bioreactor with a pH of 6.

show abstract

Section: Resultssupporting

confidence: 90%

Effect of pH on the Production of Volatile Fatty Acids in Dark Fermentation Process of Organic Waste

Grzelak

Ślężak

Krzystek

et al. 2018

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

show abstract

“…Environmental factors that influence the acidogenesis stages are substrate, inoculum, pH, temperature, and HRT (He et al, 2012). Low pH and short HRT are conditions favored by acid-forming bacteria to grow and may inhibit the growth of microorganisms forming methane (Solera, Romero, & Sales, 2002).…”

Section: Literature Reviewmentioning

confidence: 99%

Acidogenesis of Palm Oil Mill Effluent to Produce Biogas: Effect of Hydraulic Retention Time and pH

Trisakti

Manalu

Taslim

et al. 2015

Procedia - Social and Behavioral Sciences

View full text Add to dashboard Cite

Acidogenesis of palm oil mill effluent to produce biogas was conducted base on anaerobic digestion process. This process was consisted of four different stages using various types of microorganisms which came from various groups of bacteria. This research studied the effect of hydraulic retention time (HRT) and pH to the change of the organic compounds concentration and solids content of POME to the growth of microorganisms during acidogenesis stage. Initially, the suitable loading up was determined by varying the HRT 6.7; 5.0; and 4.0 days in the continuous stirred tank reactor (CSTR) with mixing rate 50 rpm, pH 6.0 ± 0.2, and room temperature. Next, suitable pH was determined by varying the pH at 5.0; 5.5; and 6.0 with mixing rate 100-110 rpm and temperature 55 o C. Analysis of TS, VS, TSS, VSS, COD, and VFA were conducted in order to study the growth of microorganisms and their abilities in converting organic compound to produce VFA. The highest growth of microorganisms was achieved at HRT 4.0 day with microorganism concentration was 20.62 mg VSS/L and COD reduction was 15.7%. The highest production of total VFA achieved was 5622.72 mg/L at pH 6.0, with the concentration of acetic acid, propionic acid and butyric acid were 2257.34; 975.49; and 2389.90 mg/L, respectively. While degradation VS and COD were 11 and 23%, respectively.

show abstract

“…As such, FW has been used as the sole microbial feedstock for the development of various value‐added bioproducts, e.g. biofuels, biodiesel, platform chemicals, and enzymes …”

Section: Introductionmentioning

confidence: 99%

Platform chemical production from food wastes using a biorefinery concept

Kıran

Trzcinski

Liu

2014

J. Chem. Technol. Biotechnol.

View full text Add to dashboard Cite

According to the Food and Agricultural Organization (FAO), one-third of food produced globally for human consumption (nearly 1.3 billion tons) is lost along the food supply chain. Food waste has often been incinerated with other combustible municipal wastes for possible recovery of heat or other forms of energy, and the residual ash is disposed of in landfills. However, incineration is not cost-effective, and can potentially cause air pollution. Therefore, green technology is urgently needed for appropriate management of food waste with a focus on material recovery. Due to its organics-and nutrients-rich nature, food waste could be viewed as a useful resource for production of high-value platform chemicals through fermentation. Compared with animal feed or traditional fuel for transportation, platform chemicals obviously have higher economic value, i.e. more profitable. Recently, technologies for production of value added bio-products (e.g. organic acids, biodegradable polymers, etc.) from various kinds of food wastes have gained more and more interest. This review attempts to examine the state of the art of the fermentation technologies of food waste for production of platform chemicals, with emphasis on the Asia-Pacific region.

show abstract

Influence of Temperature on Hydrolysis Acidification of Food Waste

Cited by 104 publications

References 9 publications

Effect of pH on the Production of Volatile Fatty Acids in Dark Fermentation Process of Organic Waste

Effect of pH on the Production of Volatile Fatty Acids in Dark Fermentation Process of Organic Waste

Acidogenesis of Palm Oil Mill Effluent to Produce Biogas: Effect of Hydraulic Retention Time and pH

Platform chemical production from food wastes using a biorefinery concept

Contact Info

Product

Resources

About