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Microalgae

Sanath KONDAVEETI,Kwang Soon CHOI,Ramesh KAKARLA,Booki MIN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 784-791 doi: 10.1007/s11783-013-0590-4

Abstract: Renewable algae biomass, was used as substrate for generating electricity in two chamber microbial fuel cells (MFCs). From polarization test, maximum power density with pretreated algal biomass was 102 mW·m (951 mW·m ) at current generation of 276 mA·m . The individual electrode potential as a function of current generation suggested that anodic oxidation process of algae substrate had limitation for high current generation in MFC. Total chemical oxygen demand (TCOD) reduction of 74% was obtained when initial TCOD concentration was 534 mg·L for 150 h of operation. The main organic compounds of algae oriented biomass were lactate and acetate, which were mainly used for electricity generation. Other by-products such as propionate and butyrate were formed at a negligible amount. Electrochemical Impedance Spectroscopy (EIS) analysis pinpointed the charge transfer resistance (112 ?) of anode electrode, and the exchange current density of anode electrode was 1214 nA·cm .

Keywords： microbial fuel cell (MFC)     algae     bioelectricity     substrate     volatile fatty acid     biomass     COD removal efficiency    

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The role of lipids in fermentative propionate production from the co-fermentation of lipid and food waste

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 7, doi: 10.1007/s11783-023-1686-0

Abstract:

● Lipid can promote PA production on a target from food waste.

Keywords： Acidogenic fermentation     Microbial community     Volatile fatty acid     Propionate     Food waste     Lipid    

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Improved energy recovery from dark fermented cane molasses using microbial fuel cells

Soumya Pandit, Balachandar G, Debabrata Das

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 1,   Pages 43-54 doi: 10.1007/s11705-014-1403-4

Abstract: A major limitation associated with fermentative hydrogen production is the low substrate conversion efficiency. This limitation can be overcome by integrating the process with a microbial fuel cell (MFC) which converts the residual energy of the substrate to electricity. Studies were carried out to check the feasibility of this integration. Biohydrogen was produced from the fermentation of cane molasses in both batch and continuous modes. A maximum yield of about 8.23 mol H /kg COD was observed in the batch process compared to 11.6 mol H /kg COD in the continuous process. The spent fermentation media was then used as a substrate in an MFC for electricity generation. The MFC parameters such as the initial anolyte pH, the substrate concentration and the effect of pre-treatment were studied and optimized to maximize coulombic efficiency. Reductions in COD and total carbohydrates were about 85% and 88% respectively. A power output of 3.02 W/m was obtained with an anolyte pH of 7.5 using alkali pre-treated spent media. The results show that integrating a MFC with dark fermentation is a promising way to utilize the substrate energy.

Keywords： dark fermentation     biohydrogen     microbial fuel cell     volatile fatty acid     anolyte    

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Inhibition character of crotonaldehyde manufacture wastewater on biological acidification

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1403-9

Abstract:

• The inhibition of the main organic pollutions in CMW was demonstrated.

Keywords： Crotonaldehyde manufacture wastewater     Biological acidification     Volatile fatty acids     Inhibition     Toxic    

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Effects of fatty acid chain length and degree of unsaturation on the surface activities of monoacyl trehaloses

Yue-E SUN, Wenshui XIA, Xueyan TANG, Zhiyong HE, Jie CHEN,

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 4,   Pages 407-412 doi: 10.1007/s11705-009-0255-9

Abstract: The surface properties of monoacyl trehaloses with different acyl chains were investigated at 30°C, 40°C, 50°C, and 60°C. Monoacyl trehaloses were enzymatically synthesized and purified with silica gel column chromatography and semi-preparative high-performance liquid chromatography (HPLC), and the purity of products was identified by mass spectrometry (MS) and nuclear magnetic resonance (NMR). The surface tension of monoacyl trehalose in pure water was measured using Doüy ring method at different temperatures. The critical micelle concentrations (CMC), surface tension at the CMC, , and residual area per molecule, , were estimated from the curves. The CMC value of unsaturated monoacyl trehalose was affected by both the degree of unsaturation and the acyl chain length, and the effect of chain length on the CMC value was much stronger than that of the unsaturation degree. However, there was no significant dependency of the value and a values on the chain length or the unsaturated degree.

Keywords： high-performance liquid     tension     different     spectrometry     chromatography    

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Machine learning enabled prediction and process optimization of VFA production from riboflavin-mediated sludge fermentation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 11, doi: 10.1007/s11783-023-1735-8

Abstract:

● Data-driven approach was used to simulate VFA production from WAS fermentation.

Keywords： Machine learning     Volatile fatty acids     Riboflavin     Waste activated sludge     eXtreme Gradient Boosting    

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New insights into different surfactants’ impacts on sludge fermentation: Focusing on the particular metabolic processes and microbial genetic traits

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1527-6

Abstract:

• The promoting effects for VFA generation follow the order of APG>SDBS>HTAB.

Keywords： Waste activated sludge (WAS)     Volatile fatty acids (VFA)     Surfactant types     Functional microorganisms    

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Influencing mechanism of high solid concentration on anaerobic mono-digestion of sewage sludge without agitation

Yuyao ZHANG,Huan LI,Can LIU,Yingchao CHENG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 1108-1116 doi: 10.1007/s11783-015-0806-x

Abstract: The blocked mass transfer led to the accumulation of volatile fatty acids (VFAs) and free ammonia.

Keywords： anaerobic digestion     methane     sewage sludge     volatile fatty acids     free ammonia    

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EXTRACTION AND EVALUATION OF EDIBLE OIL FROM SCHIZOCHYTRIUM SP. USING AN AQUEOUS ENZYMATIC METHOD

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 4,   Pages 623-634 doi: 10.15302/J-FASE -2021400

Abstract: edible oil due to its short growth cycle and rapid lipid accumulation, especially of docosahexaenoic acidThere was a significant difference (P<0.05) in polyunsaturated fatty acid composition between

Keywords： antioxidant activity / aqueous enzymatic extraction / edible microalgal oil / fatty acid composition    

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Potential hybrid feedstock for biodiesel production in the tropics

Solomon GIWA,Oludaisi ADEKOMAYA,Collins NWAOKOCHA

Frontiers in Energy 2016, Volume 10, Issue 3,   Pages 329-336 doi: 10.1007/s11708-016-0408-8

Abstract: The primary aim is to improve fuel properties which are strongly influenced by the fatty acid compositionThe principal fatty acids (FAs) in the HO are oleic (35.62%) and lauric acids (24.23%) with 47.80% of

Keywords： groundnut oil     palm kernel oil     methyl ester     fuel properties     tropics     fatty acid composition    

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Mapping the structure-activity relationship of

Worawan PANPIPAT, Hasene KESKIN, Zheng GUO

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 1,   Pages 105-113 doi: 10.1007/s11705-015-1502-x

Abstract: The phase behavior of twelve synthesized -sitosteryl fatty acid esters with acyl moieties with differentThe surface-pressure isotherms showed that short chain -sitosteryl fatty acid esters gave smaller mean

Keywords： β-sitosteryl fatty acid esters     dipalmitoyl phosphatidylcholine     Langmuir monolayer     condensing    

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Mechanisms of Steatosis-Derived Hepatocarcinogenesis: Lessons from HCV Core Gene Transgenic Mice Review

Pan Diao, Fangping Jia, Xiaojing Wang, Xiao Hu, Takefumi Kimura, Takero Nakajima, Toshifumi Aoyama, Kyoji Moriya, Kazuhiko Koike, Naoki Tanaka

Engineering 2021, Volume 7, Issue 12,   Pages 1797-1805 doi: 10.1016/j.eng.2021.08.019

Abstract: Several dietary modifications, including calorie restriction and diets rich in saturated fatty acids(SFAs), trans fatty acids (TFAs), or cholesterol, were found to influence hepatic steatogenesis and tumorigenesis

Keywords： Steatosis     Hepatocellular carcinoma     Trans fatty acid     Saturated fatty acid     Dietary restriction     HCV    

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Cultivation of sp. HQ in inland saline-alkaline water under different light qualities

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 4, doi: 10.1007/s11783-021-1479-2

Abstract:

• Optimal growth of Chlorella in inland saline-alkaline water was achieved by blue LED.

Keywords： Light quality     Chlorella     Inland saline-alkaline water     Fatty acid     Biodiesel property    

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Upgrading VFAs bioproduction from waste activated sludge via co-fermentation with soy sauce residue

Yanqing Duan, Aijuan Zhou, Kaili Wen, Zhihong Liu, Wenzong Liu, Aijie Wang, Xiuping Yue

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 1, doi: 10.1007/s11783-019-1086-7

Abstract:

SSR addition upgraded VFAs production from WAS.

Structure modification by pretreatments led to performance distinctions.

Distinctions in microbial community was observed by pretreatments selection.

Up to 0.49‒0.65 billion €/year of market value potential was preliminary estimated.

Keywords： Waste activated sludge (WAS)     Soy sauce residue (SSR)     Sludge conditioning     Volatile fatty acids (VFAs)    

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miRNAs in non-alcoholic fatty liver disease

Zhen He,Cheng Hu,Weiping Jia

Frontiers of Medicine 2016, Volume 10, Issue 4,   Pages 389-396 doi: 10.1007/s11684-016-0468-5

Abstract:

Non-alcoholic fatty liver disease (NAFLD) is a major cause of liver cirrhosis and hepatocellular carcinoma

Keywords： nonalcoholic fatty liver disease     nonalcoholic steatohepatitis     hepatocellular carcinoma     miRNA    

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Title Author Date Type Operation

Microalgae

Sanath KONDAVEETI,Kwang Soon CHOI,Ramesh KAKARLA,Booki MIN

Journal Article

The role of lipids in fermentative propionate production from the co-fermentation of lipid and food waste

Journal Article

Improved energy recovery from dark fermented cane molasses using microbial fuel cells

Soumya Pandit, Balachandar G, Debabrata Das

Journal Article

Inhibition character of crotonaldehyde manufacture wastewater on biological acidification

Journal Article

Effects of fatty acid chain length and degree of unsaturation on the surface activities of monoacyl trehaloses

Yue-E SUN, Wenshui XIA, Xueyan TANG, Zhiyong HE, Jie CHEN,

Journal Article

Machine learning enabled prediction and process optimization of VFA production from riboflavin-mediated sludge fermentation

Journal Article

New insights into different surfactants’ impacts on sludge fermentation: Focusing on the particular metabolic processes and microbial genetic traits

Journal Article

Influencing mechanism of high solid concentration on anaerobic mono-digestion of sewage sludge without agitation

Yuyao ZHANG,Huan LI,Can LIU,Yingchao CHENG

Journal Article

EXTRACTION AND EVALUATION OF EDIBLE OIL FROM SCHIZOCHYTRIUM SP. USING AN AQUEOUS ENZYMATIC METHOD

Journal Article

Potential hybrid feedstock for biodiesel production in the tropics

Solomon GIWA,Oludaisi ADEKOMAYA,Collins NWAOKOCHA

Journal Article

Mapping the structure-activity relationship of

Worawan PANPIPAT, Hasene KESKIN, Zheng GUO

Journal Article

Mechanisms of Steatosis-Derived Hepatocarcinogenesis: Lessons from HCV Core Gene Transgenic Mice

Pan Diao, Fangping Jia, Xiaojing Wang, Xiao Hu, Takefumi Kimura, Takero Nakajima, Toshifumi Aoyama, Kyoji Moriya, Kazuhiko Koike, Naoki Tanaka

Journal Article

Cultivation of sp. HQ in inland saline-alkaline water under different light qualities

Journal Article

Upgrading VFAs bioproduction from waste activated sludge via co-fermentation with soy sauce residue

Yanqing Duan, Aijuan Zhou, Kaili Wen, Zhihong Liu, Wenzong Liu, Aijie Wang, Xiuping Yue

Journal Article

miRNAs in non-alcoholic fatty liver disease

Zhen He,Cheng Hu,Weiping Jia

Journal Article