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The transformation of PAHs in the sewage sludge incineration treatment

Hui ZHANG,Le XU,Yifei ZHANG,Mengchan JIANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 336-340 doi: 10.1007/s11783-014-0766-6

Abstract: The release of pollutants from sewage sludge in the treatment process is a worldwide tricky problem inIn this paper, the release and reaction between monomers of polycyclic aromatic hydrocarbons (PAHs) inThe result indicates that the transformation may occurre between monomers of PAHs during their release

Keywords： release of monomers     transformation of monomers     PAHs     sewage sludge     incineration treatment    

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Progress on cleaner production of vinyl chloride monomers over non-mercury catalysts

Jinli ZHANG, Nan LIU, Wei LI, Bin DAI

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4,   Pages 514-520 doi: 10.1007/s11705-011-1114-z

Abstract: Polyvinyl chloride (PVC) has become the third most used plastic after polyethylene and polypropylene and the worldwide demand continues to increase. Polyvinyl chloride is produced by polymerization of the vinyl chloride monomer (VCM), which is manufactured industrially via the dehydrochlorination of dichloroethane or the hydrochlorination of acetylene. Currently PVC production through the acetylene hydrochlorination method accounts for about 70% of the total PVC production capacity in China. However, the industrial production of VCM utilizes a mercuric chloride catalyst to promote the reaction of acetylene and hydrogen chloride. During the hydrochlorination, the highly toxic mercuric chloride tends to sublime, resulting in the deactivation of the catalyst and also in severe environmental pollution problems. Hence, for China, it is necessary to explore environmental friendly non-mercury catalysts for acetylene hydrochlorination as well as high efficiency novel reactors, with the aim of sustainable PVC production via the acetylene-based method. This paper presents a review of non-mercury heterogeneous and homogeneous catalysts as well as reactor designs, and recommends future work for developing cleaner processes to produce VCM over non-mercury catalysts with high activity and long stability.

Keywords： polyvinyl chloride     vinyl chloride monomer     acetylene hydrochlorination     non-mercury catalysts     green chemical process    

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Design of nanocarriers for efficient cellular uptake and endosomal release of small molecule and nucleic

Vaibhav Mundra, Ram I. Mahato

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 4,   Pages 387-404 doi: 10.1007/s11705-014-1457-3

Abstract: Viruses exploit intracellular cues to release the genome to cytosol.

Keywords： nanocarrier     cellular uptake     endosomal release     nucleic acid drug    

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Semi-solid materials for controlled release drug formulation: current status and future prospects

Michelle TRAN,Chun WANG

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 2,   Pages 225-232 doi: 10.1007/s11705-014-1429-7

Abstract: Here we review several common semi-solid polymers currently used in the controlled release formulations

Keywords： controlled release     drug delivery     semi-solids     polymer     excipient    

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Study on the NOx release rule along the boiler during pulverized coal combustion

JIN Jing, ZHANG Zhongxiao, LI Ruiyang

Frontiers in Energy 2007, Volume 1, Issue 1,   Pages 91-95 doi: 10.1007/s11708-007-0009-7

Abstract: Numerical simulation and experimental study on NO release along the boiler during pulverized coal combustionWith the increase of temperature the NO emission increased and the peak value of NO release moved forwardThe peak value of NO release moved backwards with the increase of coal rank.
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Capacity estimation and preliminary strategy for reducing the release of dioxins in China

YU Gang, ZHANG Qing, HUANG Jun, CAI Zhenxiao, SUI Qian

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 13-17 doi: 10.1007/s11783-007-0002-8

Abstract: The strategy and action plan for reducing the release of dioxins in China are the most important componentssources for applying the best available technology/best environmental practice (BAT/BEP) to reduce the releaseHow about the capacity for reducing the dioxins release from the key sources?The list of key sources covering about half of the total dioxins release was determined considering fourcorresponding to the scenario that all key sources have been applied BAT/BEP to reduce the dioxins release

Keywords： GIS     difference     capacity     scenario     implementation    

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Synthesis and characterization of biocompatible polyurethanes for controlled release of hydrophobic and

Juichen YANG,Hong CHEN,Yuan YUAN,Debanjan SARKAR,Jie ZHENG

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 4,   Pages 498-510 doi: 10.1007/s11705-014-1451-9

Abstract: Design of biocompatible and biodegradable polymer systems for sustained and controlled release of bioactiveHere, we designed, synthesized, and characterized four polyurethane carrier systems for controlled releaseBy tuning polyurethane segments, different release profiles of hydrophobic and hydrophilic drugs wereSuch difference in release profiles was attributed to a complex interplay among structure, hydrophobicityan important role of segmental structure of the polyurethane as an engineering tool to control drug release

Keywords： phase structure     degradation     polyurethanes     controlled release     drug delivery    

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Highly Aromatic Norditerpenoid Heterodimers and Monomers from Trigonostemon fragilis

Jun-Su Zhou,Long Cheng,Yuan Gao,Zhan-Peng Ge,Bin Zhou,Jing-Ya Li,Jin-Xin Zhao,Jian-Min Yue,

Engineering doi: 10.1016/j.eng.2023.09.015

Abstract: Four new norditerpenoid heterodimers with different dimerization patterns—namely, trigofragiloids A–C (denoted as compounds 1–3) and (+)- and (−)-trigofragiloid D (compound 4)—and three new phenanthrenone norditerpenoids—namely, trigofragiloids E–G (compounds 5–7)—were isolated from Trigonostemon fragilis. Compounds 1 and 2 feature a novel heterodimeric carbon skeleton formed by the conjugation of a tetra-norditerpenoid and an ennea-norditerpenoid; they have been identified as class 2 atropisomers by means of quantum chemical calculations. Compound 3 is an unprecedented phenylpropanoid-norditerpenoid adduct with a new dimerization pattern. Compounds (+)- and (−)-4 are the first example of S-shaped 1,4-dioxane-fused norditerpenoid dimers. Inspired by the structure elucidation of compound 4, two co-occurring analogues, actephilol A and epiactephilol A, were structurally revised as a pair of geometrical isomers and were identified as two pairs of enantiomers, (+)- and (−)-8 and (+)- and (−)-9, respectively. Their structures were characterized using a combined method. Notably, compound 7 exhibits remarkable adenosine triphosphate-citrate lyase (ACLY) inhibition with a half-maximal inhibition concentration (IC50) value of (0.46 ± 0.11) μmol∙L−1, as active as the positive control BMS-303141, and a molecular docking study offers deep insight into the interaction between compound 7 and ACLY.

Keywords： Norditerpenoid heterodimer     Trigonostemon fragilis     Euphorbiaceae     Trigofragiloid     Structural revision     adenosine triphosphate-citrate lyase (ACLY) inhibitory activity    

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functional supramolecular nanoparticles based on pillar[5]arene for controlled generation, storage and release

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3,   Pages 307-313 doi: 10.1007/s11705-022-2216-5

Abstract: The storage and controlled release of singlet oxygen (1O2) have attracted increasinghydroxyphenyl)porphyrin (TPP), that may provide the controlled generation, storage and releaseinto one functional system, which provides a new strategy for the controlled generation, storage and release

Keywords： storage and controlled release of singlet oxygen     supramolecular nanoparticles     noncovalent interactions    

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Phosphorus release potential and pollution characteristics of sediment in downstream Nansi Lake, China

Zhijian LI, Qinyan YUE, Baoyu GAO, Yanwen WANG, Qing LIU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 162-170 doi: 10.1007/s11783-011-0313-7

Abstract: to evaluate present and potential phosphorous pollution due to high sedimentary phosphorus load and releaseKinetics and isotherms of adsorption/release of sedimentary phosphorus were studied to determine equilibriumphosphate concentration (EPC ) and release potential.Kinetics of phosphorus adsorption on sediment and release from sediment were well described by both theimpermanent equilibrium with overlying water in status of phosphorus, the sediments can be likely to release

Keywords： Nansi Lake     sediment     phosphorus     release potential     equilibrium phosphate concentration    

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Controlled drug release of 5-amino salicylic acid by poly(2-hydroxyethylmethacrylate) grafted agar

G. Usha RANI,Kartick Prasad DEY,Srijita BHARTI,Sumit MISHRA

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 4,   Pages 465-470 doi: 10.1007/s11705-014-1452-8

Abstract: Grafted copolymers of 2-hydroxyethylmethacrylate (HEMA) monomers on agar were synthesized by microwavedrug release studies were performed at pH values of 2 and 7 in order to investigate the possibility ofpH triggered release for colon targeted drug delivery.it may be possible to develop a programmable drug release matrix based on grafted polysaccharide.Ag-g-P(HEMA) appears to be a useful matrix for controlled release.

Keywords： agar     controlled drug release     5-Amino salicylic acid     poly(2-hydroxyethylmethacrylate) grafted agar    

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Four kinds of capping materials for controlling phosphorus and nitrogen release from contaminated sediment

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 3, doi: 10.1007/s11783-021-1463-x

Abstract:

• Lanthanum modified bentonite (LMB) can effectively absorb phosphorus (P).

Keywords： Sediment     Eutrophication     Thin-layer capping     Phosphorus     Nitrogen     Aluminum-based P-inactivation agent    

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Effect of Fe on NO release during char combustion in air and O

Ying GU, Xiaowei LIU, Bo ZHAO, Minghou XU

Frontiers in Energy 2012, Volume 6, Issue 2,   Pages 200-206 doi: 10.1007/s11708-012-0181-2

Abstract: The chemistry of char was probed by studying nitrogen release under the reactions with air and oxy-fuelThe results also indicate that the release of NO increases more significantly with the Fe addition in

Keywords： NO     Fe     char     combustion     CO2    

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Experimental investigations of frost release by hydrophilic surfaces

Zhongliang LIU, Lingyan HUANG, Yujun GOU, Yaomin LIU

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 475-487 doi: 10.1007/s11708-010-0114-x

Abstract: Frost formation occurs when water vapor in the surrounding air comes into contact with cold surfaces through heat and mass transfer. It is usually an undesirable phenomenon in most refrigeration and cryogenic systems. A few studies have shown that changing the surface energy, such as increasing the surface hydrophilicity or hydrophobicity, has significant effects on frost growth. In this paper, a kind of hydrophilic polymer paint is formulated to counteract frost deposition on cold surfaces. The coated surface can retard frost formation up to three hours under low plate temperatures (-15.3°C) and high air humidity (72%). To test the antifrosting performance of the hydrophilic paint under more practical conditions, it is applied to a fin-and-tube heat exchanger and a domestic refrigerator at a coating thickness of 30 μm. Comparisons of frost deposition, pressure drops, and outlet temperatures are made between uncoated and coated heat exchangers. Under conditions of high air temperature (2.2°C) and relative high air humidity (90%), the paint prolongs the defrosting interval from 80 to 137 min. Experimental observations also show that the coated hydrophilic fins are free of frost deposition during the entire course of the test and that the coating has no significant additional thermal resistance.

Keywords： frost formation     hydrophilicity     heat and mass transfer     performance    

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Effects of environmental factors on the production and release of matrix-bound phosphine from lake sediments

GENG Jinju, WANG Qiang, WANG Xiaorong, NIU Xiaojun

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 120-124 doi: 10.1007/s11783-007-0022-4

Abstract: Effects of pH, temperature, and oxygen on the production and release of phosphine in eutrophic lake sedimentsThe rates of phosphine production and release from lake sediments varied with temperature. 20?
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Title Author Date Type Operation

The transformation of PAHs in the sewage sludge incineration treatment

Hui ZHANG,Le XU,Yifei ZHANG,Mengchan JIANG

Journal Article

Progress on cleaner production of vinyl chloride monomers over non-mercury catalysts

Jinli ZHANG, Nan LIU, Wei LI, Bin DAI

Journal Article

Design of nanocarriers for efficient cellular uptake and endosomal release of small molecule and nucleic

Vaibhav Mundra, Ram I. Mahato

Journal Article

Semi-solid materials for controlled release drug formulation: current status and future prospects

Michelle TRAN,Chun WANG

Journal Article

Study on the NOx release rule along the boiler during pulverized coal combustion

JIN Jing, ZHANG Zhongxiao, LI Ruiyang

Journal Article

Capacity estimation and preliminary strategy for reducing the release of dioxins in China

YU Gang, ZHANG Qing, HUANG Jun, CAI Zhenxiao, SUI Qian

Journal Article

Synthesis and characterization of biocompatible polyurethanes for controlled release of hydrophobic and

Juichen YANG,Hong CHEN,Yuan YUAN,Debanjan SARKAR,Jie ZHENG

Journal Article

Highly Aromatic Norditerpenoid Heterodimers and Monomers from Trigonostemon fragilis

Jun-Su Zhou,Long Cheng,Yuan Gao,Zhan-Peng Ge,Bin Zhou,Jing-Ya Li,Jin-Xin Zhao,Jian-Min Yue,

Journal Article

functional supramolecular nanoparticles based on pillar[5]arene for controlled generation, storage and release

Journal Article

Phosphorus release potential and pollution characteristics of sediment in downstream Nansi Lake, China

Zhijian LI, Qinyan YUE, Baoyu GAO, Yanwen WANG, Qing LIU

Journal Article

Controlled drug release of 5-amino salicylic acid by poly(2-hydroxyethylmethacrylate) grafted agar

G. Usha RANI,Kartick Prasad DEY,Srijita BHARTI,Sumit MISHRA

Journal Article

Four kinds of capping materials for controlling phosphorus and nitrogen release from contaminated sediment

Journal Article

Effect of Fe on NO release during char combustion in air and O

Ying GU, Xiaowei LIU, Bo ZHAO, Minghou XU

Journal Article

Experimental investigations of frost release by hydrophilic surfaces

Zhongliang LIU, Lingyan HUANG, Yujun GOU, Yaomin LIU

Journal Article

Effects of environmental factors on the production and release of matrix-bound phosphine from lake sediments

GENG Jinju, WANG Qiang, WANG Xiaorong, NIU Xiaojun

Journal Article