A5028401437- Anaerobic Digestion and Biogas Production
- Biofuel production and bioconversion
- Wastewater Treatment and Nitrogen Removal
- Ruminant Nutrition and Digestive Physiology
- Agricultural Economics and Policy
- Bioenergy crop production and management
- Reproductive Physiology in Livestock
- Crop Yield and Soil Fertility
- Algal biology and biofuel production
- Catalysis for Biomass Conversion
- Constructed Wetlands for Wastewater Treatment
- Ionic liquids properties and applications
- Animal health and immunology
- Enzyme Catalysis and Immobilization
- Water-Energy-Food Nexus Studies
- Food composition and properties
- Membrane Separation Technologies
- Rice Cultivation and Yield Improvement
- Microbial Fuel Cells and Bioremediation
- Chemical Synthesis and Reactions
- Climate change impacts on agriculture
- Microbial metabolism and enzyme function
- Biological Control of Invasive Species
- Hydrology and Drought Analysis
- Power Systems and Renewable Energy
Yunnan Normal University
2014-2024
Ghent University
2021-2022
China Agricultural University
2018-2021
Swiss Federal Institute of Aquatic Science and Technology
2018
University of Nebraska System
2016
Both ruminal microbial structure and functionality might play a role in inter-individual variation susceptibility for subacute rumen acidosis (SARA) observed dairy cows. The aims of this study were to determine whether differences between cows with distinct SARA reflected (1) communities, (2) salivary bacterial (3) fermentative capacity microbiota assessed vitro. To test hypothesis, samples collected via an esophageal tube on 21 d postpartum from 38 multiparous Holstein cows, which...
Methyl laurate was synthesized from lauric acid (LA) and methanol via an esterification reaction using ionic liquids (ILs) as catalysts. The efficiencies of three different catalysts, 1-methylimidazole hydrogen sulfate ([Hmim]HSO 4 ), 1-methyl-2-pyrrolidonium ([Hnmp]HSO ) H 2 SO , were compared. effect the methanol/LA molar ratio, temperature, time catalyst dosage on rate LA investigated by single-factor experiments. Based experiments, optimized response surface methodology. results showed...
Abstract The main objective of this study was to establish the metabolic pathway a biogas fermentation system active at low temperature, and describe bacterial archaeal methanogenic species responsible. A inoculum adapted be 9°C used in 10‐L batch‐type temperature‐controlled fermentor, using pig manure as raw material. Fermentation followed for 120 days. combination nonbiological biological factors analyzed. Species were identified from OTU analysis based on 16S rDNA amplicon sequencing,...
The objective of this study was to investigate and evaluate the biomethane potential (BMP) Bougainvillea spectabilis Willd (BSW) waste in Yunnan, China, when subjected mesophilic anaerobic digestion (AD). Three different categories plant investigated were as follows: flowers, leaves, stems. These three portions assessed for their BMP a laboratory-scale batch digester period 60 days at 30 ± 0.1°C temperature. results showed that maximum daily methane yield B. spectabilia's stems 65.95, 56.29,...
The use of the fermented total mixed ration (FTMR) is a promising approach for preservation homogeneous feed, but changes during fermentation and links with bacterial community FTMR are not fully understood. This study investigated effects adding oat silage (OS) to in terms fermentation, chemical composition, community. quality 22% OS was greatly improved, as demonstrated by decreases butyric acid concentration, lower lactic acid/acetic ratio, larger population bacteria (LAB), quicker...
Abstract In this study, we investigated the inhibitory effect of low temperature on biogas fermentation system. Biogas inoculum was domesticated at 4 °C, and subsequently inoculated into pig manure feedstock in a batch process. A low-temperature system maintained 9 its abiotic factors, bacterial community, archaeal community were determined. The results showed that (1) lasted for 160 days, with total gas production 19,150 ml, including N 2 11,370 CO 3,534 CH 3,031 ml. (2) average relative...
In recent years, expanded granular sludge blanket (EGSB) reactor has been widely used in the treatment of high-concentration organic wastewater, but its research mainly focused on efficiency and microbial community composition. There were few studies relationship operation conditions energy utilization efficiency. Therefore, methanogenic characteristics EGSB studied by using cassava alcohol wastewater (CAW) as a raw material at (36 ± 1) °C. The results show that degradation volatile fatty...
Abstract To comprehensively assess the efficacy of employing internal circulation (IC) anaerobic reactor for corn alcohol wastewater treatment and investigate its feasibility, this study focused on digestion parameters, energy balance, composition prokaryotic microbial community. During operation reactor, hydraulic retention time was progressively reduced from 4.8 to 1.6 days while achieving an average organic loading rate 12.46 kg chemical oxygen demand (COD)/(m3·d). Moreover, removal COD...
Abstract Nitroethane (NE), 2-nitroethanol (NEOH) and 2-nitro-1-propanol (NPOH) were investigated in order to determine their inhibitory effects on vitro ruminal fermentation methane (CH 4 ) production of a hay-rich substrate (alfalfa hay: maize meal = 4:1, w/w). The rumen liquor collected from cannulated Holstein dairy cows was incubated at 39 °C for 72 h. addition NE, NEOH NPOH slowed down the process notably decreased molar CH proportion by 96.8, 96.4 35.0%, respectively. abundance total...
This study aimed to evaluate the hydrolysis of rapeseed oil using pyrrolidonium ionic liquids as catalysts under atmospheric pressure. The process parameters were optimized a sequence experimental protocols effects liquid loading, dosage emulsifier, weight ratios substrates, temperature and time. results demonstrated that ranking catalytic activity is N-methyl-2-pyrrolidonium hydrogen sulfate salt ([HNMP]HSO4)>1-(3-sulfonic acid) propyl-2-pyrrolidonium ([C3SO3Hnhp]HSO4)>2-pyrrolidonium...
Abstract Methyl laurate was synthesized from lauric acid and methanol using Brønsted ionic liquids as catalysts, by an esterification reaction. The efficiencies of four different 1-methylimidazolium hydrogen sulfate ([Hmim]HSO 4 ), 2-pyrrolidonium ([Hnhp]HSO 1-(3-sulfonic acid) propyl-2-pyrrolidonium ([C 3 SO Hnhp]HSO ) H 2 were compared. effect the methanol/lauric molar ratio, reaction temperature, time, catalyst dosage on conversion investigated single-factor experiments. On basis...
To improve the low energy production efficiency of fermentative hydrogen (FHP) and methane (FMP), two types fermentation were effectively combined in this study. Using sucrose as feedstock, both successive followed by (SFPHM) (SFPMH) performed to overall anaerobic process. The results showed that conversion SFPHM was 79.85% whereas SFPMH only 43.12%. Therefore, can significantly traditional biological treatment.
<p>Most research on drought assessment adopted historical in-situ observations, however, there has been increased data availability from remote sensing during the recent years. This study utilizes two sources of in assessment. Using spatiotemporal variations meteorological were firstly investigated by calculating standardized precipitation index (SPI) and evapotranspiration (SPEI) at 1, 3, 6-month time scales Northeast China. data, combined deficit (CDI) for agricultural was...
In order to study the effect of food-microorganism (F/M) ratio on gas properties in batch biogas fermentation experiments with walnut peel, by under condition 30°C, peel as raw materials, and respectively choose F/M(vs/vs)=0.20, 0.15, was studied peel. The experimental results showed that potential TS VS, total volume time reaching 80% production group F/M(vs/vs)=0.20 were 202ml/gTS, 226ml/gVS, 2840ml, 19d. However, values F/M(vs/vs)=0.15 152ml/gTS, 170ml/gVS, 2140ml, 24d. Therefore, has a...
Abstract In vivo and in vitro trials were conducted to assess the effects of tributyrin (TB) supplementation on short-chain fatty acid (SFCA) concentrations, fibrolytic enzyme activity, nutrient digestibility methanogenesis adult sheep. Nine 12-month-old ruminally cannulated Small Tail ewes (initial body weight 55 ± 5.0 kg) without pregnancy used for trial. substrate made offer TB at 0, 2, 4, 6 8 g/kg a dry matter (DM) basis was incubated by ruminal microbes 72 h 39°C. Forty-five trial...
The transition period is a challenging for high-producing dairy cattle. Cows in early lactation are considered as group at risk of subacute ruminal acidosis (SARA). Variability SARA susceptibility hypothesized to be reflected fecal characteristics such pH, dry matter content, volatile and odd- branched-chain fatty acids (VFA OBCFA, respectively), well microbiota. This was investigated with 38 periparturient cows, which were classified into four groups differing median mean time reticular pH...