Asia-Pacific Journal of Chemical Engineering
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2025
·
IF 1.6
Ying Wang,Haiyue Chen,Hongbao Liang,Hongwu Liang
Dibutyl phthalate (DBP) is a widely used plasticizer whose environmental release poses significant risks to ecosystems and human health. This study systematically investigated DBP adsorption on three common nanomaterials—titanium dioxide nanoparticles (n-TiO 2 ), multiwalled carbon nanotubes (MWCNTs), and carboxylated MWCNTs (MWCNTs-COOH)—using comprehensive kinetic, isotherm, and thermodynamic analyses. Adsorption equilibrium was rapidly achieved on carbon-based materials (8 h) compared to n-TiO 2 (24 h), with adsorption capacities following the order MWCNTs > MWCNTs-COOH > n-TiO 2 . Kinetic modeling indicated that DBP adsorption on n-TiO 2 is predominantly governed by physical processes, whereas adsorption on MWCNTs and MWCNTs-COOH involves a combination of physisorption and chemisorption. The Freundlich isotherm model best described the adsorption for all three materials, suggesting heterogeneous multilayer adsorption. Although initial pH (5.3–7.9) had a negligible effect, the presence of humic acid significantly enhanced DBP adsorption on MWCNTs. Thermodynamic analysis revealed that the adsorption was spontaneous and endothermic for all materials. These findings provide crucial mechanistic insights into DBP-nanomaterial interactions and highlight that carbon-based nanomaterials, particularly MWCNTs, are highly effective for DBP removal from aquatic environments.
研究领域:
环境科学
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纳米技术
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吸附
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水处理
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污染物去除
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环境化学
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DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
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2025
·Vol. 20
·期 5
·e70078
·
IF 1.6
Ming Yang,Yong Zhang,Hongzheng Zhu,Jun Chen,Fanfei Min,Rongzhong Mao,Jianqiang Yin,Qinhui Shi,Xiaojian Wang,Xinhong Liu,Kun Chen
Understanding the effect of inorganic cations on coal slurry conditioning is the premise of optimizing coal flotation. We studied the interaction between coal and dodecane via Materials Studio (MS) software. The difference in electrostatic potential energy was the essential factor of the different adsorption behavior of water and dodecane molecules at the coal surface. The interaction force, detachment force, and wettability of different coal types were measured using the interaction force test system. As the Ca 2+ concentration increased, the interaction force between coal and the solution decreased while the wettability increased. The adsorption rate and contact angle of dodecane on the coal surface were measured via ultraviolet spectrophotometer. Both the adsorption rate and contact angle between coal and dodecane generally decreased as the Ca 2+ concentration increased independently of coal type. Our results can provide valuable insight into the development of technology for coal slurry conditioning and flotation.
研究领域:
矿物加工
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表面化学
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煤浮选
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能量耗散
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力学分析
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DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
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2025
·
IF 1.6
Jia Lian,Xin Sun,Cheng Xue,Cong Qi
The desalination of seawater has demonstrated significant potential to use solar-driven interfacial evaporation technologies due to its sustainability, outstanding productivity, and kindness to the environment. In this paper, a hydrogel interfacial evaporator was produced, with PVA and SA as the base materials. The addition of carbon nanotubes (CNTs) was used to enhance the photothermal conversion efficiency, and the cross-linking procedure was carried out employing sodium tetraborate decahydrate (borax). The experimental study researched how evaporation efficiency was affected by varying sodium chloride concentrations, light intensity, and borax cross-linking levels. The study confirmed that the hydrogel cross-linked with 4% borax exhibits the best efficiency of evaporation, reaching a 2.709 kg/m 2 · h evaporation rate and 98% evaporation efficiency. Moreover, it demonstrates excellent salt tolerance and stability during the process. This study effectively created an inexpensive, eco-friendly, nontoxic, and easy-to-fabricate hydrogel evaporator, which provides a very important reference value for the development of the novel kind of solar thermal evaporator.
研究领域:
材料科学
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可再生能源
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环境工程
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纳米技术
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产品关联
DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
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2022
·Vol. 17
·期 5
·e2790
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IF 1.777
Bingyi Zhou,Tao Ge,Xiaoman Luo,Zhaohui Wang,Yueyue Qiao,Chuanchuan Cai,Jingyao Xu
Under the two frequency microwave conditions of 915 and 2450 MHz, orthogonal tests were designed to investigate the effects of organic acid reagent, microwave irradiation time, and mixing time of additives and coal samples on the desulfurization effect of coal. Results show that the effect of irradiation time on the experimental desulfurization efficiency under frequency microwave conditions is large and is the main factor. The desulfurization effect under 915 MHz microwave condition is better than 2450 MHz microwave condition. Two sets of experimental optimal coal samples were used for characterization and analysis. Thermogravimetric analysis revealed that the combustion temperature range of the coal samples is shortened and the integrated combustion index is considerably higher after the microwave irradiation experiment. Fourier-transform infrared spectroscopy analysis showed that the overall chemical structure of the coal samples does not change significantly after the experimental treatment. X-ray photoelectron spectroscopy analysis showed that the intensity of organic sulfur in coal samples is weakened after microwave irradiation, the characteristic peaks of thiols and thioethers are reduced to a great extent, and an increase in the intensity of sulfoxide organic sulfur is observed. On the basis of the results of experimental analysis and quantum chemical simulation calculations, the mechanism of organosulfur structure removal under the action of microwave is revealed.
研究领域:
能源化学
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煤化学
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环境工程
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材料科学
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物理化学
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分析化学
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清洁燃料技术
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DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
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2012
·Vol. 8
·期 1
·54-58
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IF 0.758
Zhengpeng Yang,Chunjing Zhang
A molecularly imprinted hydroxyapatite (HAP) thin film was constructed onto the surface of quartz crystal using molecular imprinting and surface sol–gel process. Quartz crystal microbalance technique was employed to in situ investigate the interaction between bilirubin (BR) and HAP film. Compared with non-imprinted HAP film, the molecularly imprinted HAP film not only exhibits a much higher adsorption capacity for BR molecule, but shows an enhanced photocatalytic activity in degrading BR. According to the in situ frequency measurement, the degradation-rate constants (K) of BR on imprinted HAP film is about 8.05 × 10 −4 s −1 , which is two times higher than that obtained on non-imprinted HAP film. © 2012 Curtin University of Technology and John Wiley & Sons, Ltd.
研究领域:
材料科学
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环境催化
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分析化学
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纳米技术
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DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
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2012
·Vol. 8
·期 3
·318-322
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IF 0.758
Chunjing Zhang,Zhengpeng Yang,Chunxiao Zhang,Yukun Sun
A titania film imprinted by atrazine molecule at the surface of a quartz crystal was prepared using molecular imprinting and surface sol–gel process. The quartz crystal microbalance technique was employed to in situ investigate the degradation behavior of atrazine on the molecularly imprinted titania film. The obtained results reveal that the molecular imprinting can enhance degradation of atrazine on titania films, and the degradation rate constants (K) estimated from the in situ frequency measurement is about 0.62 × 10 −3 s −1 , which is two times higher than that obtained on non-imprinted titania films. © 2012 Curtin University of Technology and John Wiley & Sons, Ltd.
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DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
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2024
·
IF 1.4
Chaoran Zhou,Zhixian Liang,Hao Qiu,Shanshan Jiang,Wei Wang,Chao Su
Solid oxide fuel cells (SOFCs) as highly effective energy conversation devices have gained substantial recognition and research interest. The electrochemical properties of the traditional SOFCs are restricted by the sluggish reaction kinetics for the cathode material when lowering the operation temperature to below 600°C. In addition, the stability of the cathode at reduced temperatures is also a big challenge for the widely popularization of SOFC technology. Achieving high activities and stable ORR in the cathode is crucial for the development of SOFCs. The doping active metal method has been demonstrated as an effective approach to optimize the phase structure and improve the ORR activity of the cathode. Herein, we successfully develop an Ir-doped SrCoO 3 − δ (SrCo 0.98 Ir 0.02 O 3 − δ , SCI) cathode for SOFCs. SCI exhibits a low area-specific resistance (ASR) of 0.057 Ω cm 2 at 650°C, ~ 44% lower than 0.102 Ω cm 2 of Ir-free SrCoO 3 − δ . The Ni–Sm 0.2 Ce 0.8 O 1.90 (SDC) anode-supported fuel cell with SDC electrolyte and SCI cathode obtains an excellent output performance (e.g., 1,128 mW cm −2 at 650°C). The desired results underscore the feasibility of the Ir-doping strategy as an optimized method for the exploitation of advancing cathode in SOFCs.
研究领域:
材料科学
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能源技术
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DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
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2024
·
IF 1.4
Bo Wang,Pei-ya Li,Shu-han Lu,Bin Wang,Fusheng Yang,Tao Fang
Liquid organic hydrogen carrier (LOHC) technology has unique advantages in hydrogen storage and transportation. However, the lack of research on the continuous dehydrogenation process of LOHCs has hindered the design and application of industrial dehydrogenation processes. In this work, a highly active dehydrogenation catalyst 1.5 wt% Pd/activated carbon (Pd/C) and a commercial catalyst 5 wt% Pd/Al 2 O 3 were used for the continuous dehydrogenation of dodecahydro-N-ethylcarbazole (12H-NEC). Based on a tubular reactor and lab-scale apparatus, 1.5 wt% Pd/C catalyst achieved a maximum dehydrogenation conversion of 98.3% and a maximum NEC selectivity of 95.3%, while dehydrogenation conversion and NEC selectivity with 5 wt% Pd/Al 2 O 3 were 98.3% and 97.6%, respectively. It showed the equally excellent performance between Pd/C and Pd/Al 2 O 3 , and the former has less Pd loading than the latter, with the potential of reducing the production cost of the dehydrogenation catalyst. The dehydrogenation results also indicated the difference in catalytic performance between the two kinds of catalysts. The obtained kinetics data were analyzed, and the dynamics of continuous dehydrogenation were studied to provide fundamental information for dehydrogenation scale-up.
研究领域:
化学工程
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能源科学
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产品关联
DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
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2012
·Vol. 7
·期 6
·940-947
·
IF 0.758
Jianxian Zeng,Qincheng He,Hu Zhou,Xiahui Sun,Jiaojiao Zhang
Complexation–ultrafiltration process was investigated for cerium(III) recovery from aqueous solutions by using poly (acrylic acid) sodium salt (PAASS) as a complexing agent. The adsorption of cerium(III) on PAASS was preliminarily studied at different pH values. Next, effects of pH, polymer metal ratio (PMR), calcium(II) and competitive complexing agents on permeate flux ( J ) and cerium rejection coefficient ( R ) were investigated in the total recirculation mode. Finally, the integrations of four experiments including concentration, decomplexation, regeneration of PAASS and reuse of regenerated PAASS were carried out. Obtained results show that the adsorption can be described well using the Langmuir equation. If pH is reduced below 4, J decreases rapidly. PMR has negligible effect on J . R increases with increasing pH or PMR. Calcium(II) and ethylenediaminetetraacetic acid disodium salt have the effects on R , but these effects can decrease by increasing pH. Tartrate sodium does not influence R . In the process of concentration, J declines slowly, and R is about 1. It takes 40 min to reach the decomplexation equilibrium at pH 3. The decomplexation percentage of cerium(III)–PAASS complex is about 70%. In the regeneration of PAASS, cerium(III) can be removed effectively, and the purification of regenerated PAASS is acceptably satisfactory. The binding capacity of regenerated PAASS is close to that of fresh PAASS, and the recovery percentage of binding capacity is higher than 90%. © 2012 Curtin University of Technology and John Wiley & Sons, Ltd.
研究领域:
化学工程
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环境科学
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产品关联
DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
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2012
·Vol. 8
·期 4
·567-577
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IF 0.758
Ying Gu,Xiaowei Liu,Bo Zhao,Wenqiang Liu,Minghou Xu
Nitrogen species distribution during coal pyrolysis with Ca addition in N 2 , CO 2 and Ar was studied at 1000 °C using a horizontal tube furnace. In particular, the effect of Ca on the distribution of nitrogen species in N 2 and CO 2 atmospheres, which were closer to pyrolysis processes of conversional air and oxy-fuel combustion in comparison with inert Ar environment, was investigated for the first time in this work. It was found that Ca has a great effect on nitrogen species distribution during both coal and demineralized coal pyrolysis; on the other hand, CO 2 causes the formation of NO. Demineralization increases the formation of HCN and char nitrogen, but there is little effect on NH 3 formation during pyrolysis in N 2 , in contrast to pyrolysis in Ar atmosphere, which decreases NH 3 formation. A significant reduction in char yield was found after char gasification in CO 2 at 1000 °C. With two different Ca-based additives, i.e., (CH 3 COO) 2 Ca and Ca(OH) 2 , char yield decreases with the increasing amount of Ca additives in both cases. The effect of Ca on HCN and NH 3 formation during pyrolysis depends on both the form of Ca and the amount of addition. In most cases, HCN and NH 3 formation decreases with Ca addition in Ar, but increases in N 2 . Ca addition slightly promotes HCN formation during pyrolysis in CO 2 . There is no NH 3 detected during pyrolysis in CO 2 because of the reaction of NH 3 and CO 2 in the background. In addition, NO concentration decreases sharply with increasing the amount of Ca addition in the atmosphere of CO 2 , which means that Ca has an effect not only on pyrolysis, but also on gasification of char in CO 2 . In most cases, char nitrogen increases with Ca addition in N 2 or Ar. © 2012 Curtin University of Technology and John Wiley & Sons, Ltd.
研究领域:
能源科学
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环境科学
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产品关联
DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
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2017
·Vol. 13
·期 1
·e2156
·
IF 0.836
Zhengjiang Liu,Huiyan Ma,Juming Liu,Lei Xing,Lin Cheng,Jucai Yang,Baodong Mao,Qiancheng Zhang
In this work, Hangjin2 # clay (HC), a natural iron-contained clay mineral first discovered in Inner Mongolia of China, is found to be able to catalyze the heterogeneous Fenton reaction efficiently upon rational modification. After activation using dilute sulfuric acid, the HC prohibited a significantly enhanced activity for heterogeneous Fenton reaction. Via acid activation process, Fe 2+ /Fe 3+ redox can be introduced on the surface of sulfuric acid-activated Hangjin2 # clay (SHC), and Brønsted acid sites can be also created on the surface of SHC. Furthermore, Brønsted acid sites could effectively promote the generation of •OH for methyl orange (MO) oxidation and facilitate the Fe 3+ /Fe 2+ redox process. Fenton degradation of MO was used to evaluate the effect of acid activation on the catalytic activities of SHC. Experimental results revealed that the high activity of SHC was mainly attributed to the synergetic effect of the abundant acid sites on catalyst surface and the Fe 3+ /Fe 2+ redox process. In addition, quenching studies confirmed that •OH radicals were principally responsible for the degradation of MO. More importantly, MO degradation for 3 consecutive cycles demonstrated SHC exhibited reusable and stable activity.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
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2017
·Vol. 13
·期 1
·e2153
·
IF 0.836
Zhuqian Xiao,Yidan Xu,Yu Fan,Qiang Zhang,Jianwei Mao,Jianbing Ji
Here, we developed a new strategy for preparation of series of in-situ reduction bimetallic catalysts Ni-W/SiO 2 by introducing of reducing agent in the preparation process. And these catalysts were applied into the catalytic hydrogenolysis of microcrystalline cellulose and pretreated lignocellulose. The results show that the in situ reduction 15%Ni–20%W/SiO 2 shows the prominent activity for microcrystalline cellulose conversion into ethylene glycol (EG), 1,2-propylene glycol, and glycerol with the highest yield of EG at 61.30% under the experimental condition. And the relative high of EG yield (30.23%) was obtained when a combinative pretreatment technology of steam explosion (0.45 MPa) coupled with hot alkali (70 °C) was introduced to enhance the hydrogenolysis of plant lignocellulose-based feedstocks over the in situ reduction catalyst 15%Ni–20%W/SiO 2 . The SEM and thermogravimetry analysis revealed that segmental lignin and hemicellulose were removed partly by hot alkali pretreatment. Meanwhile, the existence of Ni–W alloys and metal Ni particles were evidenced by X-ray diffraction spectra. In addition, by the detailed analysis via transmission electron microscopy and X-ray photoelectron spectroscopy, the catalytic particle size was distributed in the range of 9.3 ± 1.3 nm.
研究领域:
催化化学
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可再生资源转化
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）