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Highway construction is time consuming and complicated. Various environmental issues can be encountered during this process. Therefore, it is necessary to assess the impact of ecologic environment in highway construction. However, the traditional assessment approaches paid more attention to the environmental factors rather than the ecological problems, and the weights of evaluation indexes were assigned with relatively average values, which cannot comprehensively and accurately to assess the impact of ecological environment in highway construction. In order to solve these problems, this paper established a new model to combine improved group AHP and FCE. A total of six main factors and 22 sub-factors from three aspects of social, ecological, and natural environment were identified. The model and index system were applied to the ecological environment impact assessment of the highway from the city of Hanzhong to Lueyang County section in Shaanxi Province, and compared with traditional fuzzy AHP approach to verify the feasibility of this model. The results showed that only the ranking of social and ecological factor changed when comparing with the traditional approach. The weight of social factor determined by the improved approach was 0.2835, while that of the traditional approach was only 0.2365, and the weight difference was 0.047. This improved approach highlighted the importance of social factor and overcame the equal weight distribution of traditional approach, which made the overall weight ratio distribution more reasonable and objective. The comprehensive assessment result was 0.3482, which was in line with the “general impact” level. This was consistent with the actual situation of highway construction. The improved group AHP-FCE model could be used successfully for assessing the impact of the ecological environment in highway construction, and it had good applicability and popularization value in ecological environment assessment.
Dan Zhang; Shengke Yang; Zongzhou Wang; Chunyan Yang; Yangyang Chen. Assessment of ecological environment impact in highway construction activities with improved group AHP-FCE approach in China. Environmental Monitoring and Assessment 2020, 192, 1 -18.
AMA StyleDan Zhang, Shengke Yang, Zongzhou Wang, Chunyan Yang, Yangyang Chen. Assessment of ecological environment impact in highway construction activities with improved group AHP-FCE approach in China. Environmental Monitoring and Assessment. 2020; 192 (7):1-18.
Chicago/Turabian StyleDan Zhang; Shengke Yang; Zongzhou Wang; Chunyan Yang; Yangyang Chen. 2020. "Assessment of ecological environment impact in highway construction activities with improved group AHP-FCE approach in China." Environmental Monitoring and Assessment 192, no. 7: 1-18.
Tetrabromobisphenol A (TBBPA) is a brominated flame retardant, which is widely present in the various environmental and biological media. The knowledge on the contamination of TBBPA in Weihe River Basin is still limited. In order to know the pollution level and distribution of tetrabromobisphenol A (TBBPA) in the Weihe River Basin, a total of 34 sediment samples and 36 water samples were collected from the main stream and tributaries of the WeiHe River Basin, and the concentration of TBBPA in the samples was analyzed by high-performance liquid chromatography–electrospray ionization–mass spectrometry (HPLC-ESI-MS). The detection frequency of TBBPA in sediments and water samples was 61.8% and 27.8%, respectively; the TBBPA concentrations in sediments and water samples were in the range of not detected (N.D.)–3.889 ng/g (mean value of 0.283 ng/g) and N.D—12.279 ng/L (mean value of 0.937 ng/L), respectively. Compared with other areas in China, the residues of TBBPA in the Weihe River Basin were at a relatively low level. The spatial distributions of TBBPA in surface sediments and water indicated that the local point-input was their major source. This is related to the proximity of some sampling sites to industrial areas and domestic sewage discharge areas. The insignificant correlation between TBBPA and total organic carbon (TOC) indicated that TBBPA in sediments is not only influenced by TOC but also affected by atmosphere and land input, wet deposition, and long-distance transmission. The potential risks posed by TBBPA in water and sediment were characterized using the risk quotient (RQ) method. The calculated RQ for TBBPA was less than 0.01, showing that the ecological risk due to TBBPA was quite low for aquatic organisms.
Xueli Wang; Chenyang Li; Xiaoyu Yuan; Shengke Yang. Contamination Level, Distribution Characteristics, and Ecotoxicity of Tetrabromobisphenol A in Water and Sediment from Weihe River Basin, China. International Journal of Environmental Research and Public Health 2020, 17, 3750 .
AMA StyleXueli Wang, Chenyang Li, Xiaoyu Yuan, Shengke Yang. Contamination Level, Distribution Characteristics, and Ecotoxicity of Tetrabromobisphenol A in Water and Sediment from Weihe River Basin, China. International Journal of Environmental Research and Public Health. 2020; 17 (11):3750.
Chicago/Turabian StyleXueli Wang; Chenyang Li; Xiaoyu Yuan; Shengke Yang. 2020. "Contamination Level, Distribution Characteristics, and Ecotoxicity of Tetrabromobisphenol A in Water and Sediment from Weihe River Basin, China." International Journal of Environmental Research and Public Health 17, no. 11: 3750.
To reveal the adsorption mechanism of sediment to antibiotics with the presence of dissolved organic matter (DOM), batch experiments were carried out by oxytetracycline (OTC) on sediments with decayed plants (PDOM) and composted chicken manure (MDOM), and the zeta potential in the system before and after adsorption was measured. Results showed that the PDOM promoted the adsorption process, while the MDOM inhibited the adsorption. Adding PDOM, the change of zeta potential (Δζ) increased by 40.08% for first terrace sediments (FT) and 63.98% for riverbed sediments (RB), respectively; meanwhile, MDOM decreased by 20.04% for FT and 28.39% for RB, respectively. The results of kinetic fitting models of replacing the adsorption amount with Δζ were consistent with the initial. It indicated that there was a positive correlation between the adsorption amount and Δζ, and the zeta potential can be used to quickly judge the degree of adsorption process. The Derjaguin-Landau-Verwey-Overbeek (DLVO) theory describes the interactions of sediment particles. In terms of adsorption amount, zeta potential (absolute value) and total interaction energy all followed the order: RB > FT, RB-PDOM > FT-PDOM, and RB-MDOM > FT-MDOM. The more negative the zeta potential is, the better the dispersion of the particles is. Stronger repulsion is more conducive to adsorbing positively charged OTC. The site energy distribution theory further explained that the distribution of adsorption site in the various states of sediments increased while adding the PDOM and decreased while adding the MDOM.
Siqi Shen; Shengke Yang; Qianli Jiang; Mengya Luo; Yu Li; Chunyan Yang; Dan Zhang. Effect of dissolved organic matter on adsorption of sediments to Oxytetracycline: An insight from zeta potential and DLVO theory. Environmental Science and Pollution Research 2019, 27, 1697 -1709.
AMA StyleSiqi Shen, Shengke Yang, Qianli Jiang, Mengya Luo, Yu Li, Chunyan Yang, Dan Zhang. Effect of dissolved organic matter on adsorption of sediments to Oxytetracycline: An insight from zeta potential and DLVO theory. Environmental Science and Pollution Research. 2019; 27 (2):1697-1709.
Chicago/Turabian StyleSiqi Shen; Shengke Yang; Qianli Jiang; Mengya Luo; Yu Li; Chunyan Yang; Dan Zhang. 2019. "Effect of dissolved organic matter on adsorption of sediments to Oxytetracycline: An insight from zeta potential and DLVO theory." Environmental Science and Pollution Research 27, no. 2: 1697-1709.
Sedimentary soil was selected as the original sample (SOS). The adsorption fractions were obtained by the removal of dissolved organic matter (SRDOM), removal of minerals (SRM), removal of free fat (SRLF), and removal of nonhydrolyzable organic carbon (SNHC) respectively to investigate the adsorption characteristic of oxytetracycline (OTC) by different fractions of organic matter in sedimentary soil. The adsorption mechanism was investigated by elemental analysis, infrared spectra, and UV-visible spectroscopy. The results showed that the DOM in the sedimentary soil inhibited the adsorption of OTC, but the adsorption of different fractions of organic matter was quite different. The sorption kinetics of OTC were fitted to the pseudo-second-order model and the adsorption capacity of each fraction was: SNHC≈SRDOM > SOS > SRLF> SRM. The adsorption processes of OTC by different fractions were spontaneous. Alkaline pH condition had an effect on the adsorption of four fractions except for SNHC, while neutral and acidic pH affects SOS and SRDOM more obviously, the SNHC fraction was almost free from pH varies. Mechanism analysis showed that the main factors determining the adsorption capacity were the aromaticity and polarity of organic matter fractions. For the organic matter–based fractions (SRM, SRLF, and SNHC), the adsorption coefficient was positively correlated with the aromaticity. Furthermore, for SOS and SRDOM based on inorganic minerals, it was not only related to aromaticity, but also the content and composition of inorganic minerals.
Dan Zhang; Shengke Yang; Yanni Wang; Chunyan Yang; Yangyang Chen; Runze Wang; Zongzhou Wang; Xiaoyu Yuan; Wenke Wang. Adsorption characteristics of oxytetracycline by different fractions of organic matter in sedimentary soil. Environmental Science and Pollution Research 2019, 26, 5668 -5679.
AMA StyleDan Zhang, Shengke Yang, Yanni Wang, Chunyan Yang, Yangyang Chen, Runze Wang, Zongzhou Wang, Xiaoyu Yuan, Wenke Wang. Adsorption characteristics of oxytetracycline by different fractions of organic matter in sedimentary soil. Environmental Science and Pollution Research. 2019; 26 (6):5668-5679.
Chicago/Turabian StyleDan Zhang; Shengke Yang; Yanni Wang; Chunyan Yang; Yangyang Chen; Runze Wang; Zongzhou Wang; Xiaoyu Yuan; Wenke Wang. 2019. "Adsorption characteristics of oxytetracycline by different fractions of organic matter in sedimentary soil." Environmental Science and Pollution Research 26, no. 6: 5668-5679.
As one of the most widely used brominated flame retardants, hexabromocyclododecane (HBCD) is found widely in the environmental media. In this study, the content and spatial distribution of HBCD and risk posed by HBCD in surface sediment in the Weihe River Basin in Northwest China were investigated. The HBCD concentration ranged nd–4.04 ng/g dw with the mean was 0.45 ng/g dw. The major source of HBCD in surface sediment was local point discharge. The distribution profiles of α-, β-, γ-HBCD were 24.7–87.9%, 0–42.0%, and 0–67.1%, respectively. Specially, α-HBCD was the dominating isomer in most sample sites. This differed significantly from that in HBCD technical product, which might be attributed to the different degradation rates and inter-transformation of the three HBCD isomers. Risk quotient method was used to assess the potential risk posed by HBCD in sediment. HBCD do not pose strong risks to aquatic algae organisms in the Weihe River Basin.
Xueli Wang; Xiaoyu Yuan; Shengke Yang; Yaqian Zhao. Concentrations, Distributions, and Risk Assessment of HBCD in Sediment in the Weihe River Basin in Northwest China. International Journal of Environmental Research and Public Health 2018, 15, 2340 .
AMA StyleXueli Wang, Xiaoyu Yuan, Shengke Yang, Yaqian Zhao. Concentrations, Distributions, and Risk Assessment of HBCD in Sediment in the Weihe River Basin in Northwest China. International Journal of Environmental Research and Public Health. 2018; 15 (11):2340.
Chicago/Turabian StyleXueli Wang; Xiaoyu Yuan; Shengke Yang; Yaqian Zhao. 2018. "Concentrations, Distributions, and Risk Assessment of HBCD in Sediment in the Weihe River Basin in Northwest China." International Journal of Environmental Research and Public Health 15, no. 11: 2340.
In order to prepare parabolic superhydrophobic materials, copper meshes were used as the substrate and ultrasonic etching and oxidative corrosion were carried out with FeCl3 solution and H2O2 solution, respectively, and then the surface was modified with stearic acid (SA). The topological structure and surface wettability of the prepared mesh were characterized by fluorescence microscope, scanning electron microscopy and contact angle measurement. Finally, the as-prepared copper meshes were applied to oil-water separation. The results showed that the micro-nano-mastoid structure on the surface of the copper mesh was flaky bulges, forming a rough structure similar to a paraboloid. When the oxidative corrosion time of H2O2 was 1 min, it is more beneficial to increase the hydrophobicity of the surface of the copper mesh and increase the contact angle of water droplets on the surface of the membrane. Additionally, based on superhydrophobic materials of the parabolic copper mesh, the static contact angles of the water droplets, engine oil and carbon tetrachloride with the surface were approximately 153.6°, 5° and 0.1°, respectively and the sliding angle of the water droplets with the surface were approximately 4.9°. The parabolic membrane was applied to discuss the separation efficiency of different oils with deionized water and the separation efficiency was obtained as benzene > carbon tetrachloride > oil > machine oil. Therefore, based on the research, the parabolic superhydrophobic material has good efficiency of oil-water separation.
Xiaoying Qiao; Chunyan Yang; Qian Zhang; Shengke Yang; Yangyang Chen; Dan Zhang; Xiaoyu Yuan; Wenke Wang; Yaqian Zhao. Preparation of Parabolic Superhydrophobic Material for Oil-Water Separation. Materials 2018, 11, 1914 .
AMA StyleXiaoying Qiao, Chunyan Yang, Qian Zhang, Shengke Yang, Yangyang Chen, Dan Zhang, Xiaoyu Yuan, Wenke Wang, Yaqian Zhao. Preparation of Parabolic Superhydrophobic Material for Oil-Water Separation. Materials. 2018; 11 (10):1914.
Chicago/Turabian StyleXiaoying Qiao; Chunyan Yang; Qian Zhang; Shengke Yang; Yangyang Chen; Dan Zhang; Xiaoyu Yuan; Wenke Wang; Yaqian Zhao. 2018. "Preparation of Parabolic Superhydrophobic Material for Oil-Water Separation." Materials 11, no. 10: 1914.
In this study, the interaction between the humus and two antibiotics was studied by UV-Vis spectroscopy to describe the interaction mechanism and the effects of different environmental factors on the mechanism. Results showed that humic acid (HA) containing more aromatic groups was easily associated with antibiotics. In the HA-OTC, with the increase of the concentration of OTC, there were obvious absorption peaks in the 230–260 nm and 330–360 nm range, and the absorption band of the HA ultraviolet spectrum underwent a slight blue shift and the absorption intensity increased, demonstrating that a new ground state complex was generated. In the HA-SD, with the increase of SD concentration, an aromatic structure absorption peak appeared in the 190–220 nm range, and the peak value increased and the absorption band underwent a red shift, and the aromatization of HA decreased, which enhanced the interaction between the antibiotics and HA. With the increase of pH, the absorption band of HA, HA-OTC and HA-SD ultraviolet spectrum suffered a blue shift, the degree of polymerization of HA molecules decreased, and the number of adsorption binding sites increased, which resulted in the interaction of HA with antibiotics being enhanced. The absorption band of HA, HA-OTC and HA-SD displayed a red shift with the increase of ionic strength, which indicated that the repulsion within HA particles was weakened, and the molecular polymerization was strengthened and therefore, the interaction between antibiotics and HA was inhibited. The UV characteristics of the HA, HA-OTC and HA-SD systems were insensitive to the temperature. This study lays the foundation for better studying the effect of humus on the distribution of antibiotic residues in the environment.
Xiaoyu Yuan; Shengke Yang; Jie Fang; Xueli Wang; Haizhen Ma; Zongzhou Wang; Runze Wang; Yaqian Zhao. Interaction Mechanism between Antibiotics and Humic Acid by UV-Vis Spectrometry. International Journal of Environmental Research and Public Health 2018, 15, 1911 .
AMA StyleXiaoyu Yuan, Shengke Yang, Jie Fang, Xueli Wang, Haizhen Ma, Zongzhou Wang, Runze Wang, Yaqian Zhao. Interaction Mechanism between Antibiotics and Humic Acid by UV-Vis Spectrometry. International Journal of Environmental Research and Public Health. 2018; 15 (9):1911.
Chicago/Turabian StyleXiaoyu Yuan; Shengke Yang; Jie Fang; Xueli Wang; Haizhen Ma; Zongzhou Wang; Runze Wang; Yaqian Zhao. 2018. "Interaction Mechanism between Antibiotics and Humic Acid by UV-Vis Spectrometry." International Journal of Environmental Research and Public Health 15, no. 9: 1911.
Most studies conducted nowadays to boost electrode performance in microbial fuel cell (MFC) have focused on carbonaceous materials. The titanium suboxides (Ti4O7, TS) are able to provide a new alternative for achieving better performance in MFC and have been tested and demonstrated in this study. The Ti4O7 electrode with high electrochemical activity was modified by graphene/polyaniline by the constant potential method. Electrogenic microorganisms were more conducive to adhere to the anode electrode due to the presence of graphene/polyaniline. The MFC reactor with polyaniline /graphene modified TS (TSGP) anode achieves the highest voltage with 980 mV, and produces a peak power density of 2073 mW/m2, which is 2.9 and 12.7 times of those with the carbon cloth anode, respectively, at the 1000 Ω external resistance. In addition, this study evaluates the effects of anolyte conductivity, pH, and COD on the treatment of oil-containing restaurant wastewater (OCRW) in MFC using TSGP anode. The OCRW amended with 120 mS/cm obtains the lowest internal resistance (160.3 Ω). Increasing the anodic pH, gradually from acidic (pH 5.5) to alkaline conditions (pH 8.0), resulted in a gradual increase in maximum power density to 576.4 mW/m2 and a decrease in internal cell resistance to 203.7 Ω. The MFC at the COD 1500 mg/L could obtain steady-state output voltage during 103 h while removing up to 65.2% of the COD of the OCRW.
Zhiliang Li; Shengke Yang; Ya’Nan Song; Haiyang Xu; Zongzhou Wang; Wenke Wang; Yaqian Zhao. Performance evaluation of treating oil-containing restaurant wastewater in microbial fuel cell using in situ graphene/polyaniline modified titanium oxide anode. Environmental Technology 2018, 41, 420 -429.
AMA StyleZhiliang Li, Shengke Yang, Ya’Nan Song, Haiyang Xu, Zongzhou Wang, Wenke Wang, Yaqian Zhao. Performance evaluation of treating oil-containing restaurant wastewater in microbial fuel cell using in situ graphene/polyaniline modified titanium oxide anode. Environmental Technology. 2018; 41 (4):420-429.
Chicago/Turabian StyleZhiliang Li; Shengke Yang; Ya’Nan Song; Haiyang Xu; Zongzhou Wang; Wenke Wang; Yaqian Zhao. 2018. "Performance evaluation of treating oil-containing restaurant wastewater in microbial fuel cell using in situ graphene/polyaniline modified titanium oxide anode." Environmental Technology 41, no. 4: 420-429.
The method of Three-Dimensional Excitation Emission Matrix Fluorescence Spectrophotometer was used to identify the interaction mechanism between humic acid (HA) and antibiotics. The effects of antibiotic concentration, temperature, and pH on the bonding strength between HA and antibiotics were investigated. The results showed that with the increase of antibiotics concentration, the quenching effect on HA was enhanced. The quenching of HA by both oxytetracycline (OTC) and sulfadiazine (SD) is a single static quenching of the complexes, and the interaction forces are mainly a hydrogen bond and the van der Waals force. The quenching constant KsvOTC > KsvSD and the binding constant KbOTC > KbSD, indicates that HA has a more obvious quenching effect on OTC. The Kb of HA by OTC ranged from 3.223 × 103 to 12.784 × 103 L·mol−1 in the range of 298 K to 313 K, while the Kb of HA by SD ranged from 2.051 × 103 to 5.533 × 103 L·mol−1. With the increase of temperature, the quenching constant Ksv and binding constant Kb of both OTC and SD by HA gradually decrease, and the low temperature is beneficial to the interaction. The composite of OTC and HA is more stable than SD. Under neutral alkaline conditions, both OTC and SD had the strongest quenching effect on HA, and the resulting complex was the most stable. However, the Ksv and Kb of HA by OTC were greater than SD in the pH range of the experiment and the pH effect on quenching of HA by OTC (Ksv) was greater than that of SD.
Runze Wang; Shengke Yang; Jie Fang; Zongzhou Wang; Yangyang Chen; Dan Zhang; Chunyan Yang. Characterizing the Interaction between Antibiotics and Humic Acid by Fluorescence Quenching Method. International Journal of Environmental Research and Public Health 2018, 15, 1458 .
AMA StyleRunze Wang, Shengke Yang, Jie Fang, Zongzhou Wang, Yangyang Chen, Dan Zhang, Chunyan Yang. Characterizing the Interaction between Antibiotics and Humic Acid by Fluorescence Quenching Method. International Journal of Environmental Research and Public Health. 2018; 15 (7):1458.
Chicago/Turabian StyleRunze Wang; Shengke Yang; Jie Fang; Zongzhou Wang; Yangyang Chen; Dan Zhang; Chunyan Yang. 2018. "Characterizing the Interaction between Antibiotics and Humic Acid by Fluorescence Quenching Method." International Journal of Environmental Research and Public Health 15, no. 7: 1458.
Due to the known problems of microbial fuel cells (MFCs), such as low electricity generation performance and high cost of operation, we modified the electrode with graphene and polyaniline (PANI) is a single-chamber air-cathode MFC and then evaluated the effects of electrode modification on MFC electricity generation performance. Carbon cloth electrodes (unmodified, CC; graphene-modified, G/CC; and polyaniline-graphene-modified, PANI-G/CC) were prepared using the impregnation method. Sulfonated cobalt phthalocyanine (CoPcS) was then introduced as a cathode catalyst. The Co-PANI-G/CC cathode showed higher catalytic activity toward oxygen reduction compared with other electrodes. The maximum power density of the MFC with Co-PANI-G/CC cathode was 32.2 mW/m2, which was 1.8 and 6.1 times higher than the value obtained with Co-G/CC and Co/CC cathodes, respectively. This indicates a significant improvement in the electricity generation of single-chamber MFCs and provides a simple, effective cathode modification method. Furthermore, we constructed single-chamber MFCs using the modified anode and cathode and analyzed electricity generation and oxytetracycline (OTC) degradation with different concentrations of OTC as the fuel. With increasing added OTC concentration, the MFC performance in both electricity generation and OTC degradation gradually decreased. However, when less than 50 mg/L OTC was added, the 5-day degradation rate of OTC reached more than 90%. It is thus feasible to process OTC-containing wastewater and produce electricity using single-chamber MFCs, which provides a new concept for wastewater treatment.
Yanhua Wang; Jiayan Wu; Shengke Yang; Huihui Li; Xiaoping Li. Electrode Modification and Optimization in Air-Cathode Single-Chamber Microbial Fuel Cells. International Journal of Environmental Research and Public Health 2018, 15, 1349 .
AMA StyleYanhua Wang, Jiayan Wu, Shengke Yang, Huihui Li, Xiaoping Li. Electrode Modification and Optimization in Air-Cathode Single-Chamber Microbial Fuel Cells. International Journal of Environmental Research and Public Health. 2018; 15 (7):1349.
Chicago/Turabian StyleYanhua Wang; Jiayan Wu; Shengke Yang; Huihui Li; Xiaoping Li. 2018. "Electrode Modification and Optimization in Air-Cathode Single-Chamber Microbial Fuel Cells." International Journal of Environmental Research and Public Health 15, no. 7: 1349.
The sludge from the water supply plant was investigated to remove fluoride ions from the water. To improve the adsorption ability, the original sludge sample was treated with fuel oxidation, pyrolysis, hydrochloric acid, and sulphuric acid methods, and hydrochloric acid treatment improved the adsorption capacity of the sludge on the fluoride in water significantly, with a maximum adsorption capacity to 140 mg/kg. The adsorption experimental data was the well fitted pseudo-first-order model and the Langmuir isotherms model. SEM images and XRD patterns of the adsorbent were recorded to get a better insight into the adsorption process. The effect of three variables, hydrochloric acid treated sludge (HWS) dose, pH, and initial fluoride concentration were studied using a Box-Behnken statistical experimental design. The model of the adsorption and optimum conditions was investigated using the response surface methodology. The optimum removal efficiency of fluoride can reach 81.153% under the optimum condition: HWS dose of 14.10 g/L and pH value at 6.12. The effect of co-existing anions and the removal efficiency from the water were also studied. The results suggest that sludge from the water supply plant can be reused as a coagulant for the removal of fluoride from poor quality water.
Ying Li; Shengke Yang; Qianli Jiang; Jie Fang; Wenke Wang; Yanhua Wang. The Adsorptive Removal of Fluoride from Aqueous Solution by Modified Sludge: Optimization Using Response Surface Methodology. International Journal of Environmental Research and Public Health 2018, 15, 826 .
AMA StyleYing Li, Shengke Yang, Qianli Jiang, Jie Fang, Wenke Wang, Yanhua Wang. The Adsorptive Removal of Fluoride from Aqueous Solution by Modified Sludge: Optimization Using Response Surface Methodology. International Journal of Environmental Research and Public Health. 2018; 15 (4):826.
Chicago/Turabian StyleYing Li; Shengke Yang; Qianli Jiang; Jie Fang; Wenke Wang; Yanhua Wang. 2018. "The Adsorptive Removal of Fluoride from Aqueous Solution by Modified Sludge: Optimization Using Response Surface Methodology." International Journal of Environmental Research and Public Health 15, no. 4: 826.
The adsorption behavior and mechanism for the uptake of fluoride ions by untreated and desugared reed residues (roots, stems and leaves) were studied through adsorption experiments, elemental analysis, infrared spectroscopy and surface area analysis. The results showed that the adsorption capacity of untreated and desugared reeds followed the order: desugared roots 2136 mg/kg > desugared leaves 1825 mg/kg > desugared stems 1551 mg/kg > untreated roots 191 mg/kg > untreated stems 175 mg/kg > untreated leaves 150 mg/kg, so adsorption capacity of desugared reeds was larger than that of the untreated reeds. The adsorption kinetic of fluoride ions followed a pseudo-first-order model. A Langmuir model could be used to fit the isothermal adsorption process which was a spontaneous endothermic reaction involving mainly physical adsorption. The ΔG for the uptake of fluoride by the desugared reeds was more negative, so the degree of spontaneity was higher than for the use of the untreated reeds. After samples were desugared, the specific surface area and aromaticity of the reed increased, while the polarity and hydrophilicity decreased, which explained the adsorption amount of desugared reed was higher than that of the untreated. This study enriches techniques and methods of removing fluoride ions from water.
Rong Song; Shengke Yang; Haiyang Xu; Zongzhou Wang; Yangyang Chen; Yanhua Wang. Adsorption Behavior and Mechanism for the Uptake of Fluoride Ions by Reed Residues. International Journal of Environmental Research and Public Health 2018, 15, 101 .
AMA StyleRong Song, Shengke Yang, Haiyang Xu, Zongzhou Wang, Yangyang Chen, Yanhua Wang. Adsorption Behavior and Mechanism for the Uptake of Fluoride Ions by Reed Residues. International Journal of Environmental Research and Public Health. 2018; 15 (1):101.
Chicago/Turabian StyleRong Song; Shengke Yang; Haiyang Xu; Zongzhou Wang; Yangyang Chen; Yanhua Wang. 2018. "Adsorption Behavior and Mechanism for the Uptake of Fluoride Ions by Reed Residues." International Journal of Environmental Research and Public Health 15, no. 1: 101.
To elucidate the adsorption property and the mechanism of plant residues to reduce oxytetracycline (OTC), the adsorption of OTC onto raw willow roots (WR-R), stems (WS-R), leaves (WL-R), and adsorption onto desugared willow roots (WR-D), stems (WS-D), and leaves (WL-D) were investigated. The structural characterization was analyzed by scanning electron microscopy, Fourier-transform infrared spectra, and an elemental analyzer. OTC adsorption onto the different tissues of willow residues was compared and correlated with their structures. The adsorption kinetics of OTC onto willow residues was found to follow the pseudo-first-order model. The isothermal adsorption process of OTC onto the different tissues of willow residues followed the Langmuir and Freundlich model and the process was also a spontaneous endothermic reaction, which was mainly physical adsorption. After the willow residues were desugared, the polarity decreased and the aromaticity increased, which explained why the adsorption amounts of the desugared willow residues were higher than those of the unmodified residues. These observations suggest that the raw and modified willow residues have great potential as adsorbents to remove organic pollutants.
Di Wang; Haiyang Xu; Shengke Yang; Wenke Wang; Yanhua Wang. Adsorption Property and Mechanism of Oxytetracycline onto Willow Residues. International Journal of Environmental Research and Public Health 2017, 15, 8 .
AMA StyleDi Wang, Haiyang Xu, Shengke Yang, Wenke Wang, Yanhua Wang. Adsorption Property and Mechanism of Oxytetracycline onto Willow Residues. International Journal of Environmental Research and Public Health. 2017; 15 (1):8.
Chicago/Turabian StyleDi Wang; Haiyang Xu; Shengke Yang; Wenke Wang; Yanhua Wang. 2017. "Adsorption Property and Mechanism of Oxytetracycline onto Willow Residues." International Journal of Environmental Research and Public Health 15, no. 1: 8.
Qian Zhang; Changjiang Yu; Jie Fang; Haiyang Xu; Qianli Jiang; Shengke Yang; Wenke Wang. Using the Combined Fenton-MBR Process to Treat Cutting Fluid Wastewater. Polish Journal of Environmental Studies 2017, 26, 1375 -1383.
AMA StyleQian Zhang, Changjiang Yu, Jie Fang, Haiyang Xu, Qianli Jiang, Shengke Yang, Wenke Wang. Using the Combined Fenton-MBR Process to Treat Cutting Fluid Wastewater. Polish Journal of Environmental Studies. 2017; 26 (3):1375-1383.
Chicago/Turabian StyleQian Zhang; Changjiang Yu; Jie Fang; Haiyang Xu; Qianli Jiang; Shengke Yang; Wenke Wang. 2017. "Using the Combined Fenton-MBR Process to Treat Cutting Fluid Wastewater." Polish Journal of Environmental Studies 26, no. 3: 1375-1383.
The Polish Journal of Environmental Studies publishes original papers and critical reviews
Di Wang; Shengke Yang; Geng Wang; Lunchuan Gao; Yanni Wang; Qianli Jiang; Yuyun Chen. Residues and Distributions of Organochlorine Pesticides in China’s Weihe River. Polish Journal of Environmental Studies 2016, 25, 1285 -1292.
AMA StyleDi Wang, Shengke Yang, Geng Wang, Lunchuan Gao, Yanni Wang, Qianli Jiang, Yuyun Chen. Residues and Distributions of Organochlorine Pesticides in China’s Weihe River. Polish Journal of Environmental Studies. 2016; 25 (3):1285-1292.
Chicago/Turabian StyleDi Wang; Shengke Yang; Geng Wang; Lunchuan Gao; Yanni Wang; Qianli Jiang; Yuyun Chen. 2016. "Residues and Distributions of Organochlorine Pesticides in China’s Weihe River." Polish Journal of Environmental Studies 25, no. 3: 1285-1292.
Weihe River is a typical river located in the arid and semi-arid regions of Northwest China. In this study, the distribution and sources of 16 polycyclic aromatic hydrocarbons (PAHs) in Weihe River were investigated. The concentrations of ∑PAHs ranged from 351 to 4427 ng/L with a mean value of 835.4 ng/L in water dissolved phase (WDP), from 3557 ng/L to 147,907 ng/L with a mean value of 20,780 ng /L in suspended particulate matter (SPM), and from 362 to 15,667 ng/g dry weight (dw) with a mean value of 2000 ng/g dw in sediment, respectively. The concentrations of PAHs in Weihe River were higher compared with other rivers in the world. In both WDP and sediment, the highest concentrations of ∑PAHs were observed in the middle reach, while the lowest concentrations of ∑PAHs were found in the lower reach. For SPM, however, the PAHs concentrations in the lower reach were highest and the PAHs concentrations in the upper reach were lowest. The ratios of anthracene/(anthracene + phenanthrene) and fluoranthene/(fluoranthene + pyrene) reflected a pattern of both pyrolytic and petrogenic input of PAHs in Weihe River. The potential ecosystem risk assessment indicated that harmful biological impairments occur frequently in Weihe River.
Yuyun Chen; Rui Jia; Shengke Yang. Distribution and Source of Polycyclic Aromatic Hydrocarbons (PAHs) in Water Dissolved Phase, Suspended Particulate Matter and Sediment from Weihe River in Northwest China. International Journal of Environmental Research and Public Health 2015, 12, 14148 -14163.
AMA StyleYuyun Chen, Rui Jia, Shengke Yang. Distribution and Source of Polycyclic Aromatic Hydrocarbons (PAHs) in Water Dissolved Phase, Suspended Particulate Matter and Sediment from Weihe River in Northwest China. International Journal of Environmental Research and Public Health. 2015; 12 (11):14148-14163.
Chicago/Turabian StyleYuyun Chen; Rui Jia; Shengke Yang. 2015. "Distribution and Source of Polycyclic Aromatic Hydrocarbons (PAHs) in Water Dissolved Phase, Suspended Particulate Matter and Sediment from Weihe River in Northwest China." International Journal of Environmental Research and Public Health 12, no. 11: 14148-14163.
Yajuan Zhang; Shengke Yang; Wenke Wang; Yue Zhao; Chanjuan Gao. Influence of SiO2 Sol and Fe(OH)3 Colloid on Adsorption Distribution of Benzene Hexachlorides in Groundwater. Asian Journal of Chemistry 2015, 27, 219 -223.
AMA StyleYajuan Zhang, Shengke Yang, Wenke Wang, Yue Zhao, Chanjuan Gao. Influence of SiO2 Sol and Fe(OH)3 Colloid on Adsorption Distribution of Benzene Hexachlorides in Groundwater. Asian Journal of Chemistry. 2015; 27 (1):219-223.
Chicago/Turabian StyleYajuan Zhang; Shengke Yang; Wenke Wang; Yue Zhao; Chanjuan Gao. 2015. "Influence of SiO2 Sol and Fe(OH)3 Colloid on Adsorption Distribution of Benzene Hexachlorides in Groundwater." Asian Journal of Chemistry 27, no. 1: 219-223.
Chanjuan Gao; Shengke Yang; Wenke Wang; Lunchuan Gao. Influence of Humic Acid Colloid on Adsorption of DDT in the Riverbed Sediments. Asian Journal of Chemistry 2014, 26, 2637 -2642.
AMA StyleChanjuan Gao, Shengke Yang, Wenke Wang, Lunchuan Gao. Influence of Humic Acid Colloid on Adsorption of DDT in the Riverbed Sediments. Asian Journal of Chemistry. 2014; 26 (9):2637-2642.
Chicago/Turabian StyleChanjuan Gao; Shengke Yang; Wenke Wang; Lunchuan Gao. 2014. "Influence of Humic Acid Colloid on Adsorption of DDT in the Riverbed Sediments." Asian Journal of Chemistry 26, no. 9: 2637-2642.
Shengke Yang; Wenke Wang; Yue Zhao; Chanjuan Gao; Yaqian Zhao. ADSORPTION OF HEXACHLOROCYCLOHEXANE BY RAW AND SURFACTANT MODIFIED MEERSCHAUM. Environmental Engineering and Management Journal 2013, 12, 1381 -1391.
AMA StyleShengke Yang, Wenke Wang, Yue Zhao, Chanjuan Gao, Yaqian Zhao. ADSORPTION OF HEXACHLOROCYCLOHEXANE BY RAW AND SURFACTANT MODIFIED MEERSCHAUM. Environmental Engineering and Management Journal. 2013; 12 (7):1381-1391.
Chicago/Turabian StyleShengke Yang; Wenke Wang; Yue Zhao; Chanjuan Gao; Yaqian Zhao. 2013. "ADSORPTION OF HEXACHLOROCYCLOHEXANE BY RAW AND SURFACTANT MODIFIED MEERSCHAUM." Environmental Engineering and Management Journal 12, no. 7: 1381-1391.
Jing Chen; Shengke Yang; Wenke Wang; Bin Li; Lunchuan Gao; Yuanyuan Liu. Effect of Graphene Modified Cathode on Paracetamol Removal in Microbial Fuel Cell. Asian Journal of Chemistry 2013, 25, 8022 -8026.
AMA StyleJing Chen, Shengke Yang, Wenke Wang, Bin Li, Lunchuan Gao, Yuanyuan Liu. Effect of Graphene Modified Cathode on Paracetamol Removal in Microbial Fuel Cell. Asian Journal of Chemistry. 2013; 25 (14):8022-8026.
Chicago/Turabian StyleJing Chen; Shengke Yang; Wenke Wang; Bin Li; Lunchuan Gao; Yuanyuan Liu. 2013. "Effect of Graphene Modified Cathode on Paracetamol Removal in Microbial Fuel Cell." Asian Journal of Chemistry 25, no. 14: 8022-8026.