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Publications
Publications (55)
With industrialization accelerating and carbon emissions rising in recent years, the treatment of industrial wastewater containing refractory organic compounds must align with goals of energy conservation and emission reduction under the principle of carbon neutrality. Integrating anaerobic digestion (AD) with biochar (BC) presents a promising biol...
Currently, both biochar and nickel additions have been shown to improve the inhibition of anaerobic digestion by high salinity organic wastewaters (HSOWs). Nickel (Ni) plays an important role in the growth of methane producing archaea and enzyme synthesis. This study evaluated the effects of different types and dosages of nickel-loaded biochar (bio...
Micro-aeration pretreatment has emerged as a promising technology for improving the performance of anaerobic bioreactors in the treatment of lipid-rich organic waste, particularly in mitigating the accumulation of long-chain fatty acids (LCFAs). Micro-aeration intensity is a critical factor in optimizing substrate hydrolysis and methanogenesis effi...
Persistent concerns regarding environmental hazards arise from the difficulty in disposing of radioactive plant-based wastes originating from the nuclear accident at the Fukushima Daiichi Nuclear Power Plant (FNPP) in Japan in 2011. In this study, three anaerobic digestion (AD) strategies were proposed: Sole anaerobic wet fermentation, and wet ferm...
With the rising concern of global recognition and consensus of carbon neutrality under the circumstance of global warming and the shortage of both water resource and energy, the wastewater treatment processes should also be conformed to the energy conservation and carbon reduction. This study systematically reviewed and investigated the significanc...
Anaerobic biological treatment of high-salinity wastewater has attracted much attention due to its environmental and economic benefits. However, the granulation can be significantly inhibited by a certain concentration of high salinity, which leads to the poor reactor performance and process stability. The presence of high salinity can also alter t...
Kitchen waste has been confirmed as an appropriate substrate for anaerobic digestion, although means of alleviating the difficulties and time-consuming nature of the start-up phase need to be further explored. Based on the mechanism of anaerobic digestion, we discuss the factors influencing the anaerobic start-up phase of kitchen waste. By controll...
This study investigated oleate inhibition concentration on mesophilic and thermophilic sludge by utilizing acetate and H2/CO2 (80:20, v/v) as substrate, respectively. In addition, another batch experiment was carried out to explore the influence of oleate loads (mM-oleate/g-VS) on methane production. Generally, the mesophilic anaerobic system was m...
In this study, a newly established bench-scale thermophilic continuously stirred fluidized bed reactor (CSFBR) was applied for anaerobic co-digestion of food waste (FW) with grease trap waste (GTW). The performance of CSFBR regarding stability and treatment efficiency was inspected through a laboratory contrast experiment with two traditional conti...
To investigate the effect of oxygen, pH shock, and H2S inhibition on the competition between sulfate-reducing bacteria (SRB) and methane-producing archaea (MPA), a UASB reactor treating wastewater containing sulfate, ethanol and acetate was operated for 360 days. With micro-oxygenation performed at a flow rate of 100 mL/min in the upper part of the...
Tar generated as a by-product during biomass gasification contains a high concentration of refractory organic matters. In this study, a hybrid upflow anaerobic sludge-biochar bed reactor was established for tar treatment, and the methane yield was 120-154 NmL-CH4/g-CODinf, 20-30% higher than the control reactor. COD removal and methane production s...
Mathematical models are important tools for understanding and optimizing the performance of biotechnological processes. A user-friendly mathematical model is developed to simulate the sulfate reduction and methanogenesis of upflow anaerobic sludge blanket reactors. The good fit between the simulated and experimental concentrations reflects the mode...
Anaerobic digestion of decabromodiphenyl ether was carried out and compared in two continuously stirred anaerobic bioreactors for 210 days under thermophilic and mesophilic conditions. Results show that the degradation of decabromodiphenyl ether followed the first-order reaction kinetics, which exhibited a higher removal rate in the thermophilic re...
The application of biofilm-based processes such as up-flow anaerobic sludge blanket (UASB) reactors for staline wastewater treatment faces the problems of low strength and stability of granules cause by high salt concentration. In this study, the effect of biochar/Fe addition on biofilm formation was examined in anaerobic treatment of high salinity...
This study investigated the effects of the addition of micro- (Fe, Co, Ni, and Mo) and macro-(Sulfur) nutrients on mono-digestion of sorghum under mesophilic conditions. A continuous stirred-tank reactor was operated for more than 420 days under seven different experimental conditions. The experimental results showed poor performance for methane pr...
Biochar is a carbon rich product made from the biomass pyrolysis process. Recently, biochar addition in anaerobic digestion processes has attracted attention for its possible functions to act as pH stabilizing agent, microbial carrier, and interspecies electron transfer. In this study, the effects of rice husk biochar addition in sorghum anaerobic...
In this study, an integrated system of siphon-driven self-agitated anaerobic reactor (SDSAR) and anaerobic fixed bed reactor (AFBR) was conducted for the treatment of wastewater from food waste disposer (FWD), and the effect of influent total solids (TS) concentration on the process performance was evaluated. When the influent TS concentration incr...
In this study, a 200-day deca-brominated diphenyl ether (deca-BDE) degradation activity experiment was carried out, using consumer-use curtain material as the substrate. During the degradation process, polybrominated diphenyl ether (PBDE) products with fewer bromine atoms were gradually generated by the debromination of deca-BDE. The influences of...
It is becoming increasingly urgent to investigate the partition coefficients (expressed as log K DOC values) of polybrominated diphenyl ethers (PBDEs) in dissolved organic carbon (DOC) present in wastewater. In the current study, after 72 h of equilibration, the concentrations of four common PBDEs were measured in the presence of four DOC solutions...
To investigate the influence of lipid concentration (of total solids, w/w) on anaerobic treatment of food waste under thermophilic condition, a siphon-driven self-agitated anaerobic reactor was operated for 220 days. The average lipid concentration was changed from 12.8% to 59.3% (w/w) step by step. The gas production rate increased from 1.97 to 2....
The effects of organic loading rate (OLR) and operating temperature on the performance of siphon-driven self-agitated anaerobic reactor (SDSAR) in an on-site food waste (FW) treatment system were investigated. Two reactors were operated in parallel for comparison between mesophilic condition (35 ± 1 °C) and thermophilic condition (55 ± 1 °C). With...
This study investigated early stages of biofilm formation from sieved fine particles of anaerobic granules in the
presence of various cationic substances using a quartz crystal sensor to improve biofilm formation in the
anaerobic treatment of saline wastewater. The biomass attached on the sensor was greatly increased with Ca
within the low range (8...
The use of liquid fraction of pressed municipal solid waste (LPW) for hydrogen production was evaluated via electrohydrogenesis in a single-chamber microbial electrolysis cell (MEC). The highest hydrogen production (0.38 ± 0.09 m3 m−3 d−1 and 30.94 ± 7.03 mmol g−1 CODadded) was achieved at an applied voltage of 3.0 V and pH 5.5, increasing by 2.17-...
tThe influence of erythromycin on ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB)was investigated using batch and continuous experiments. During the batch experiments, the impact oferythromycin was strictly dose-dependent for AOB and NOB. The continuous addition of 1 mg/L of ery-thromycin in the long-term exposure experiment m...
To investigate the effect of oxygen, pH shock, and H2S inhibition on the competition between methane-producing archaea (MPA) and sulfate-reducing bacteria (SRB), a UASB reactor treating sulfate-rich wastewater was operated for 360 days. With micro-aeration in the upper part of the upflow anaerobic sludge blanket (UASB) reactor, sulfate removal incr...
To find an appropriate process for highly polluted surfacewater, an integrated systemwith a double-layer
biofilter and a constructed wetland was developed. In the biofilter packed with carbon-rich ceramic
granules, alternation of nitrification and denitrification was realized resulting in prominent TN (total
nitrogen) removal. The constructed wetla...
The effect of the chemical oxygen demand/sulfate (COD/SO42-) ratio on the anaerobic treatment of synthetic chemical wastewater containing sulfate, acetate, and ethanol was investigated using a UASB reactor. The experimental results show that at a COD/SO42- ratio of 20 and a COD loading rate of 25.2 g-COD·L-1·d-1, the COD removal rate was maintained...
