Shuhai Guo's research while affiliated with Chinese Academy of Sciences and other places

Publications (72)

Article
Different from lithium-ion batteries, composite carbon rod for high-power electrode was widely used in high-end manufacturing industry due to its good conductivity and low CTE. In this study, semi cokes with different structural characteristics was used as aggregate and coal tar pitch was adopted as binder and impregnant to prepare composite carbon...
Article
Low yield and unremarkable electrochemical performance of MCMB prepared from conventional thermal polymerization are inevitable, which limits its large-scale application as anode material for lithium-ion batteries. Hence, in this work, MCMBs were prepared by co‑carbonization of low-valued FCC decant oil and conductive carbon black (CCB). CCB can en...
Article
Full-text available
In order to explore the influence of C14 alkane on physiological stress responses, mineral nutrient elements uptake, cadmium (Cd) transfer, and uptake characteristics of Lolium perenne L. (ryegrass), a series of pot trials were conducted which included a moderate level of Cd (2.182 mg·kg−1) without (control) and with five levels of C14 alkane (V/m,...
Article
Low-temperature coal tar is rich in oxygenated compounds which are hard to remove and make a great influence on the quality of needle coke. Low-temperature coal tar (LTCT) and decant oil (DO) were used to co-carbonize to prepare needle coke by liquid phase carbonization, and the evolution of oxygenated structures in LTCT during the preparation of n...
Article
The use of electrokinetic (EK) phenomena can facilitate bioaugmentation by enhancing the mobility and redistribution of deposited soil bacteria through heterogeneous soil. In this research, batch treatments (T1-T6) were used to assess the characteristics of bacterial transportation and proliferation under a weak electric field (1 V/cm). The strain...
Article
In needle coke industry, the raffinate oil from raw material refining could be used for co-carbonization to improve the structural evolution of aromatic feedstock with high aromaticity and low alkyl side chain content. High-temperature coal tar pitch (HCTP) and raffinate oil obtained from low-temperature coal tar (LCT) were used to prepare needle c...
Article
In this study, we aimed to address the attenuation of electrokinetic fluxes that occur during plant (tall fescue)-based electrokinetic remediation of oil-contaminated soil. Following 60 days of treatment, the concentration of water-soluble cations and anions in the electrokinetics-assisted phytoremediation treatment (EK-P) were 20.03 mg/kg and 15.7...
Article
Total petroleum hydrocarbon (TPH) pollution in oilfield soils is a worldwide environmental problem. In this study, we analysed the spatial variation of residual TPH components and the ecological risk they pose. The soils of five selected oilfields in China, across 11 degrees of latitude and 17 degrees of longitude were selected for the investigatio...
Article
Needle coke have received much attention as a high-quality raw material for high power electrode due to its excellent electrical conductivity and low thermal expansion. In order to further investigate the effect of the molecular structure and key compositions of raw material on the quality of needle coke, a series of furfural extracts of low-temper...
Article
The influence of electrical fields on phytoremediation of multi-metal (Cd, Cu, and Zn) naturally contaminated soils has been investigated based on different soil sections. After ryegrass and hybrid penisetum were sowed for 30 d, electrical fields were applied during 30 days with the switching polarity every 30 min and continuing for 16 h d⁻¹. After...
Article
To clarify the relationship between the chemical compositions of green mesocarbon microbeads (GMCMBs) and the electrochemical behavior of carbonized mesocarbon microbeads (CMCMBs) for lithium-ion batteries, GMCMBs were prepared by emulsifying mesophase pitch (MP) with various anisotropic contents derived from FCC decant oil. Subsequently, GMCMBs we...
Preprint
Full-text available
In order to explore the influence of C14 alkane on physiological stress responses, mineral nutrient elements uptake, cadmium (Cd) transfer and uptake characteristics of Lolium perenne L. (ryegrass), a series of pot trials were conducted which included a moderate level of Cd (2.182 mg·kg − 1 ) without (control) and with five levels of C14 alkane (V/...
Article
Needle coke has been widely studied due to its highly oriented carbonaceous structure and low thermal expansion for preparing high power electrode. In order to further investigate the effect of compositions and molecular structure of heavy oil (HO) on the pyrolysis performance and structural evolution of needle coke, the heat pretreatment at 360-40...
Article
To explore the carbonization behavior and structural evolution of needle coke prepared from different types of rich-aromatic materials, petroleum feedstock hydrocracking tail oil (HCTO) and coal feedstock low-temperature coal tar (LCT) were selected to prepare needle coke. The detailed comparative investigation focused on the properties of feedstoc...
Article
Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous carcinogenic pollutants. Areas where crude oil has been exploited are at risk due to PAHs from both natural and anthropogenic sources. The Shengli Oilfield in China was used to assess the health risk posed by PAHs in areas with different population densities. A risk assessment showed that in th...
Article
An innovative mesophilic aerobic biopile technology was explored to improve the bioremediation efficiency of petroleum-contaminated soil. Under the suitable soil conditions (C:N:P at 100:5:1 and soil moisture content at 18%), the soil pH was hold in the range of 7.4 to 6.8 throughout the bioremediation process, the mesophilic (30 °C-40 °C) and forc...
Article
Heavy metal pollution of agricultural soils in sewage irrigation areas is a serious environmental issue. Many prior studies have demonstrated that soil around the irrigation area is polluted with heavy metals, even though they had not been irrigated by wastewater. In this study, a paddy field downstream of the Zhangshi Irrigation Area was selected...
Article
The comparative study of different two-stage heat treatments was conducted to illustrate the modified effects on improving yield and spinnability of mesophase pitch. In such two-stage thermotreatments, a pressured condensation is employed to involve low-molecular-weight species into the formation of mesogens, thereby increasing pitch yields. Subseq...
Article
An innovative superimposed electric field (SEF) was designed with the aim to achieve uniform removal of polycyclic aromatic hydrocarbons (PAHs) in soil. Also the influence of SEF on the bioremediation efficiency of PAHs was investigated in compared with the common electric field (CEF). Five experiments were conducted in this study, namely EK-CEF (a...
Article
Soil total petroleum hydrocarbon (TPH) pollution in oil fields is a worldwide environmental problem. In particular, the dense distribution of oil wells in low-permeability oil reservoirs has caused regional pollution superposition. We proposed a feasible method for the spatial ecological assessment for soil pollution in oil fields. Typical TPH-cont...
Article
To control the liquid-phase carbonization of the petroleum residue, the transition of the aromatics in earlier stages of the thermal conversion and its effect on subsequent carbonization behavior were analyzed. It was found that more monocyclic and dicyclic aromatics was converted to polycyclic aromatics in a comparatively shorter time between 450...
Article
Phytoremediation-assisted electrokinetic-bioremediation is a novel technology for soil remediation. We aimed to study the effects of a plant (ryegrass) on electrokinetic-bioremediation in n-hexadecane-contaminated soil. After treatment for 40 days, the n-hexadecane degradation ratio of electrokinetic-bioremediation-ryegrass (EK-Bio-RG) was 4.86% hi...
Article
Electro-bioremediation is a promising technology for remediation of soil contaminated with persistent organic compounds such as polycyclic aromatic hydrocarbons (PAHs). During electro-bioremediation, electrical fields have been shown to increase pollutant degradation. However, it remains unclear whether there is an optimal strength for the electric...
Article
This study investigated changes in soil ion content and soil water-holding capacity during electro-bioremediation (EK-Bio) of petroleum contaminated saline soil (ion content of 3.92 g/kg). The results indicated that the soil ions surrounded the electrodes with increasing time, thus changing the soil water-holding capacity. According to the Van Genu...
Article
In this study, solvent extraction experiments were conducted to investigate the channel effect of pore structures and hydrogen bonds by analyzing the desorption behavior of oil components. The highest oil recovery efficiency was 87.9 % under optimum conditions. Pore structure of oily sludge was analyzed by N2 adsorption-desorption analysis and scan...
Article
This study presents a systematic pilot-scale study on removal of PAHs from the abandoned site of Shenyang former Coking Plant in China (total PAH concentration of 5635.60 mg kg-1 in soil). Three treatments, including the control treatment (without inoculation and electric field), bioremediation (with inoculation), and the electro-bioremediation (wi...
Article
The two-stage pyrolysis was proposed to effectively form uniaxially fibrous mesophase during pyrolysis of FCC decant oil. Detailed investigation focuses on main factors of regulating mesophase orientation and corresponding changes of mesogen stacks. The first-stage treatment under low temperature of 440 °C and high pressure of 2 MPa for 8 h ensures...
Article
Polluted air is as harmful as polluted water sources to public health. As air living organisms, the research on microbial consortia under haze stress with different PM2.5 levels in a mountainous environment remains very limited. This study investigated the dynamic changes in bacterial cell counts, apoptosis, human pathogens, consortia characteristi...
Article
To concentrate pre-mesogens (molecules can convert to a mesophase quickly) from petroleum pitch and prevent system from suffering from excessive carbonization, the parent pitch was extracted by various solvents with different solubility parameters and the corresponding pitch residues were carbonized. It was found that the dispersive solubility para...
Article
The 'focusing' effect has become a limiting factor for the removal of heavy metals from soils by electrokinetic (EK) remediation. A superimposed electric field EK (SE-EK) method is proposed to address this problem. Two sets of fixed electrodes placed at different positions were switched to move the 'focusing' region of Cd to the cathode by controll...
Article
Oil sludge is one kind of toxic and persistent contamination to ecology system from petroleum industry. In order to recycle contaminated sands and reduce environmental impacts at a lower operating cost, enzyme cocktail 21/CbFDH including NADH regeneration system for oily sludge bioremediation was constructed for the first time. The intracellular en...
Article
Cadmium (Cd) pollution of rice grain caused by Cd-contaminated soils is a common problem in southwest and central south China. In this study, utilizing the advantages of the Bayes classification statistical method, we established a risk forewarning model for rice grain Cd pollution, and put forward two parameters (the prior probability factor and d...
Article
Full-text available
BACKGROUND Insects form both mutualistic and antagonistic relationships with microbes, and some antagonistic microbes have been used as biocontrol agents (BCAs) in pest management. Contextually, BCAs may be inhibited by beneficial insect symbionts, which can become potential barriers for entomopathogen‐dependent pest biocontrol. Thus, by using the...
Article
Full-text available
A systematic investigation into total and bioaccessible heavy metal concentrations in rice grains harvested from heavy metal-contaminated regions was carried out to assess the potential health risk to local residents. Arsenic, Cr, Cu, Pb and Zn concentrations were within acceptable levels while Cd and Ni concentrations appeared to be much higher th...
Chapter
Soil pollution is a global problem which has gained enormous attentions especially in China. The Institute of Applied Ecology, Chinese Academy of Sciences is the first research institute to study remediation technology for contaminated soils. In the 1990s, this institute carried out the Major Programs of Chinese Academy of Sciences, namely, “Study...
Article
This study investigates the effect of the electrokinetic process, which includes electromigration and electro-osmosis, and the cause of process termination. The results show that electromigration strongly contributes to the ionic transportation in the first 10 days, and electro-osmosis is the dominant mechanism during 11-40 d. A total of 90% of Na⁺...
Article
In the water shortage countries and areas, untreated sewage irrigation led to the extensive organic pollution of farmland soil, which seriously threatened environmental security. In this study, we selected Shenfu irrigation area (SIA) as the study area, and it was the first and largest organic sewage irrigation area in China. We analyzed the tempor...
Article
This study investigated the distribution of ion contents and microorganisms during the electro-bioremediation (EK–Bio) of petroleum-contaminated saline soil. The results showed that soil ions tend to accumulate around the electrodes, and the concentration was correlated with the distance from the electrodes. The average soil ion content was 7.92 g/...
Article
An innovative approach that couples electrokinetics with microbial degradation to breakdown cycloparaffinic hydrocarbons in soils is described. Soils were spiked with cyclododecane, used as a model pollutant, at approximately 1000 mg kg−1. A mixture of petroleum-utilizing bacteria was added to achieve about 106–107 CFU g−1. Then, three treatments w...
Article
Full-text available
This study demonstrated the highly efficient degradation of n-hexadecane in soil, realized by alternating bioremediation and electrokinetic technologies. Using an alternating technology instead of simultaneous application prevented competition between the processes that would lower their efficiency. For the consumption of the soil dissolved organic...
Article
Full-text available
Polycyclic aromatic hydrocarbon (PAH)-degrading bacteria capable of growing under electrokinetic conditions were isolated using an adjusted acclimation and enrichment procedure based on soil contaminated with heavy PAHs in the presence of an electric field. Their ability to degrade heavy PAHs under an electric field was individually investigated in...
Article
An innovative application of oily sludge via a distillation modification treatment has been proposed. Particular attention was paid to key parameters of the recovered light oil and residual emulsion, including the separation ratio of light oil, the change of chemical composition, values of penetration and softening point of the residual emulsion. I...
Article
Polycyclic aromatic hydrocarbons (PAHs) contaminated soil was studied under electrokinetic enhanced biodegradation with polarity-reversal. The effects of polarity reversal were investigated on electric current, pH, microbial counts and the spatial distribution of pyrene biodegradation rate during the application of electro-bioremediation. Three typ...
Article
Petroleum-contaminated soil washing experiments were conducted to investigate a novel method for surfactant selection. Particular attention was paid to the effect of surfactant on petroleum removal for individual clay mineral types. Four clay minerals (chlorite, kaolinite, montmorillonite, illite) and three types of surfactant (the nonionic: Tween2...
Article
Full-text available
The data on the heavy metal content at different soil depths derived from a multi-purpose regional geochemical survey in the Pearl River Delta (PRD) were analyzed using ArcGIS 10.0. By comparing their spatial distributions and areas, the sources of heavy metals (Cd, Hg, As and Pb) were quantitatively identified and explored. Netted measuring points...
Article
A combined treatment technology (DEF-BIO) using the direct electro-Fenton (DEF) process and bioremediation (BIO) was established in this study. The performance of the DEF-BIO process on the remediation of a pyrene (PYR)-contaminated soil was evaluated in a slurry reactor. The appropriate order of application was to conduct the DEF process followed...
Article
A soil remediation method combining in situ reduction of Cr(VI) with approaching anodes electrokinetic (AAs-EK) remediation is proposed. EK experiments were conducted to compare the effect of approaching anodes (AAs) and fixed electrodes (FEs) with and without sodium bisulfite (NaHSO3) as a reducing agent. When NaHSO3 was added to the soil before E...
Article
Full-text available
Background Although electro-bioremediation (EK-Bio) is effective at removing organic contaminants from soil, the role of electrical intensity (EI) and polarity-reversal (PR) remains unclear. Two electrokinetic reactors (ER I and II) with six treatments (EK-I, EK-PR-I, Bio-I, EK-Bio-I, EK-Bio-PR-I and EK-PR-II) were applied for 42 days to examine th...
Article
The present study investigated the contributions of electrokinetics (EK) and bioremediation (BIO) in the treatment of different petroleum components by using bio-electrokinetics (BIO-EK) technology with a 2-dimensional (2-D) electric field. The spatiotemporal changes of the contents of total petroleum hydrocarbons (TPH) and its components, as well...
Article
The effectiveness of electrokinetic remediation for pyrene-contaminated soil was investigated by an anode–cathode separated system using a salt bridge. The applied constant voltage was 24 V and the electrode gap was 24 cm. Two types of soil (sandy soil and loam soil) were selected because of their different conductive capabilities. The initial conc...
Article
Full-text available
Bioremediation is a safe and cost-effective technology for the removal of polycyclic aromatic hydrocarbons (PAHs) contaminated soils, but its remediation rate is usually very slow at soils contaminated with heavy PAHs in high concentrations. This paper describes the feasibility of using electrokinetics to enhance the degradation of heavy PAHs in so...
Article
Inhibition of scale buildup and optimization of the selected compound inhibitor were investigated during the recycling and reuse of oilfield produced-water. Particular attentions were paid to the factors of scale inhibition, and the changes of scale phase composition and morphology. The results showed that the addition of Zn2 + ions can effectively...
Article
Full-text available
The present study evaluated the coupling interactions between bioremediation (BIO) and electrokinetics (EK) in the remediation of total petroleum hydrocarbons (TPH) by using bio-electrokinetics (BIO-EK) with a rotatory 2-D electric field. The results demonstrated an obvious positive correlation between the degradation extents of TPH and electric in...
Article
Electrokinetic remediation is an emerging physical remediation technology for the removal of heavy metals and organic chemicals from contaminated soil. We set up a soil chamber (24 × 12 × 8 cm) with two stainless steel electrodes (12 × 0.5 cm), and a constant voltage gradient of 1.0 v cm(-1) or 2.0 v cm(-1) was applied to study the effects of unidi...
Article
Rivers in the Liaohe River Estuary area have been seriously polluted by discharges of wastewater containing petroleum pollutants and nutrients. In this paper, The Enhanced Stream Water Quality Model (QUAL2K) and its revised model as well as One-dimensional Tide Mean Model (1D model) were applied to predict and assess the water quality of the tidal...
Article
This paper investigates the hybrid technology of electrokinetics (EK) coupled with bioremediation (Bio) in the removal of pyrene (PYR) in a soil matrix. Five different treatments were conducted to investigate the coupling interactions between EK and Bio on PYR degradation. A simulated removal curve was obtained by combining the degradation curves i...
Article
Full-text available
As a new technology used for the cleaning of chromium-contaminated soil, worldwide interest in eletrokinetic (EK) remediation has grown considerably in recent times. However, owing to the fact that chromium exists as both cationic and anionic species in the soil, it is not an efficient method. This paper reports upon a study in which a process usin...
Article
Full-text available
A new four-step approach, which removed fractions one by one based on the sequential extraction procedure proposed by the Community Bureau of Reference (BCR), was designed to study the variation of chromium (Cr) chemical fractionation after citric acid/sodium citrate (CA/SC) washing. Particular attention was paid to the potential redistribution of...
Article
Approaching anode is used to decrease the ‘focusing’ effect during electrokinetic (EK) remediation of chromium-contaminated soils from a chromite ore processing residue (COPR) deposition site. Four EK remediation experiments were performed to compare the effect of approaching and fixed anodes. Various parameters, including current, pH, removal of c...
Article
The purposes of our study focus on the fate and transport of petroleum pollutants in the river, and effects of suspended substances (SS) on the change of group composition. The water samples were collected along the river which received the effluent discharged from the oil wastewater treatment plant located in Liaohe Oilfield. Saturated hydrocarbon...
Article
Electrokinetic remediation of chromium contaminated soil is affected by the species of chromium in soil. This work studies the extent of chromium migration and the speciation of chromium during the enhanced electrokinetic remediation process. Two lab-scale electrokinetic experiments were carried out to remediate chromium contaminated soil from a ch...
Article
a b s t r a c t This paper presents the improvement of acidification on the dewaterability of oily sludge from a flotation process. Various parameters, including the volume of supernatant water, capillary suction time (CST), and specific resistance to filtration (SRF) were used to evaluate the dewaterability of oily sludge. In addition, floc size d...
Article
Polycyclic aromatic hydrocarbons (PAHs) contamination of topsoil in Benxi City, Northeast China was investigated in this study, and sampling sites were located in industrial area and residential area. Results demonstrate that there is high variability in the total PAHs concentrations, ranging from 783.00 ng/g to 729 076.29 ng/g dry weight in the to...
Article
Treatment of oilfield produced water was investigated using an anaerobic process coupled with micro-electrolysis (ME), focusing on changes in chemical oxygen demand (COD) and biodegradability. Results showed that COD exhibited an abnormal change in the single anaerobic system in which it increased within the first 168 hr, but then decreased to 222...
Article
Electro-bioremediation is an innovative method to remedy organic-polluted soil. However, the principle of electrokinetic technology enhancing the function of microbes, especially the relationship of electric intensity and biodegradation efficiency, is poorly investigated. Petroleum was employed as a target organic pollutant at a level of 50 g/kg (m...
Article
Electro-bioremediation is an efficient method for removal or degradation of soil organic pollutants. Oil contaminants widely exist in many regions of the world and pose persistent risk on human health. In this study, we performed a number of experiments to examine the effectiveness of electro-bioremediation on an oil-contaminated soil in a perspex...
Article
Soil contamination with polycyclic aromatic hydro-carbons (PAHs) is an increasing problem in China. An field survey was conducted in the industrial field and adjacent soils of Benxi Iron and Steel Group Corporation of Benxi, China to investigate the contents and distribution of the PAHs of soil, and a health risk assessment was carried out with tot...
Article
A treatment engineering of prepared bed was set up for the bioremediation of oil contaminated soil with oil in this study, soils contaminated with different type of oils were treated using composting process in the prepared bed and the treatment period was divided into 2 phases with total time of 210 days. When the concentration of total petroleum...
Article
The bioremediation of soils contaminated by different types of petroleum were carried out with composting process in a prepared bed. By the measures of nutrient- and microbiological agent addition, and moisture- and pH control, an ideal environment for microbes were obtained. When total petroleum hydrocarbons, which consist of thin oil, high conden...

Citations

... Based on the presented results, it can be concluded that the application of various soil amendments to improve the physical and chemical properties of the soil and reduce the uptake of PTE by plants can be a beneficial method of remediation [48]. It should be noted that the concentration of PTE in plants depends mainly on the specific characteristics of plant species, the ability of the root system to uptake the element and soil pH, granulometric composition and organic matter content [48,49]. ...
... The effect of the decantoil hydrocarbon composition on the thermolysis process [19][20][21], as well as the study of the hydrocarbon composition of distillate fractions [22,23] and the kinetics of the hydrocarbon components formation combined, allows us to estimate the stages of mesophase development for different types of hydrocarbon raw materials during the production of needle coke [24][25][26]. This work is devoted to determining the kinetics of decantoils conversion into hydrocarbons of various groups in distillates during coking. ...
... Parameters of the oil and coal raw material, providing formation of needle coke. [14,18,28,33,38,40,[45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61]. In a further study of the effect of polymers in paper [77], it was found that the effect of polyethylene terephtalate is similar to that of polystyrene. ...
... i is the metal element of the sampling point. C i is the concentrations of collected samples, C ti is the threshold value of China (Fu et al., 2021). P max is the maximum of P. P ave is the average value of P. ...