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humic acid 10

adsorption 3

drinking water 3

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coagulation 2

humic acid (HA) 2

humic acids 2

humic substances 2

2-butenal manufacture wastewater 1

1H-13C nuclear magnetic resonance (NMR) 1

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Persistent free radicals in humin under redox conditions and their impact in transforming polycyclic aromatic hydrocarbons

Hanzhong Jia, Yafang Shi, Xiaofeng Nie, Song Zhao, Tiecheng Wang, Virender K. Sharma

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1252-y

Abstract: The role of humic substance-associated persistent free radicals (PFRs) in the fate of organic contaminants

Keywords： Humic substance     Polycyclic aromatic hydrocarbons (PAHs)     Persistent free radicals (PFRs)     Redox     Reactive    

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The Following-observing Method for Substance Flow Analysis

Lu Zhongwu

Strategic Study of CAE 2006, Volume 8, Issue 1,   Pages 18-25

Abstract: The fundamental argument set forth in the paper is that flow is the common feature of fluid flow and substanceIt is emphasized that the following-observing method is applicable not only for studying steady substanceflow (constant output of product), but also for unsteady substance flow (increasing or decreasing outputThe following-observing model of substance flow was explained by using iron flow diagram in the lifeIntroducing the degree of unsteady-state, a set of basic equations for calculating the indexes of substance

Keywords： methods of substance flow analysis     following-observing method for substance flow analysis     basic equationsfor substance flow analysis     degree of unsteadiness of substance flow    

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Effects of a structurally related substance on the crystallization of paracetamol

Ali SALEEMI, I.I. ONYEMELUKWE, Zoltan NAGY

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 79-87 doi: 10.1007/s11705-013-1308-7

Abstract: Paracetamol (PCM) was crystallized from an isopropanol (IPA) solution containing various small amounts of metacetamol as an additive. The effect on the nucleation kinetics was studied by measuring the induction time to nucleation and the metastable zone width using focused beam reflectance measurements (FBRM) and attenuated total reflectance (ATR-UV/Vis) spectroscopy. Both the induction time and the metastable zone width were expressed as functions of the additive concentration. Small amounts of metacetamol (1–4 mol-%) were found to cause significant inhibition to the nucleation by extending both the induction time and the metastable zone width. A progressive change in the morphology of the paracetamol crystals from tabular to columnar habit was observed with increasing metacetamol concentration. The solvent also had a significant effect on the size of the paracetamol crystals as smaller crystals were obtained in IPA than in aqueous solution. The dissolution rate of paracetamol was improved by the incorporation of metacetamol with 4 mol-% having the most effect. A supersaturation control (SSC) approach was implemented for the PCM-IPA system with and without metacetamol in an attempt to control and obtain larger metacetamol-doped paracetamol crystals.

Keywords： acetaminophen     metacetamol     crystallization     metastable zone width     induction time     supersaturation control    

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Two-step hydrothermal conversion of biomass waste to humic acid using hydrochar as intermediate

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1719-8

Abstract: Converting biomass materials to humic acid is a sustainable method for humic acid production and achieveA two-step hydrothermal treatment method was adopted in this study to produce humic acid from corn stalksTheir chemical properties were then analyzed, and the hydrochar-derived humic acids were produced under

Keywords： Biowaste     Hydrochar     Humic acid     Hydrothermal parameter     Unsaturation    

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Vanadium metabolism investigation using substance flow and scenario analysis

Fangfang ZHANG, Huiquan LI, Bo CHEN, Xue GUAN, Yi ZHANG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 2,   Pages 256-266 doi: 10.1007/s11783-013-0585-1

Abstract: Based on the characteristics of vanadium life cycle and substance flow analysis (SFA) framework, we present

Keywords： metabolism     vanadium industry     substance flow analysis     scenario analysis    

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Electrochemical oxidation of humic acid at the antimony- and nickel-doped tin oxide electrode

TANG Chengli,YAN Wei,ZHENG Chunli

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 3,   Pages 337-344 doi: 10.1007/s11783-013-0545-9

Abstract: This work investigated the degradation of humic acid (HA) in aqueous solution by electrochemical oxidation

Keywords： electrochemical oxidation     humic acid (HA)     natural water     Ni-Sb-SnO2/Ti electrode    

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Effects of humic acid on residual Al control in drinking water treatment plants with orthophosphate addition

Wendong WANG, Hua LI, Zhenzhen DING, Xiaochang WANG, Rui LIU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 4,   Pages 470-476 doi: 10.1007/s11783-012-0422-y

Abstract: This study aimed to investigate the effects of humic acid (HA) on residual Al control in drinking water

Keywords： coagulation     drinking water     humic acid     orthophosphate     residual Al    

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Evolution of humic substances in polymerization of polyphenol and amino acid based on non-destructive

Jianmei Zou, Jianzhi Huang, Huichun Zhang, Dongbei Yue

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 1, doi: 10.1007/s11783-020-1297-y

Abstract: • Humification process from precursors to fulvic and humic acid was confirmed. • MnO2 alone had limitedwas to use non-destructive measurement methods to investigate the role of MnO2 in the evolution of humicidentified that MnO2 alone had a limited ability in accelerating the transformation of fulvic acid (FA) to humic

Keywords： Two-dimensional correlation spectroscopy (2D-COS)     Humic substances (HSs)     Humification     Manganese dioxide    

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Abiotic association of phthalic acid esters with humic acid of a sludge landfill

Xiaoli CHAI, Yongxia HAO, Xin ZHAO, Guixiang LIU, Ying ZHU, Rong JI, Jun WU, Huanhuan TONG, Youcai ZHAO

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 6,   Pages 778-783 doi: 10.1007/s11783-012-0434-7

Abstract: The abiotic association between phthalic acid esters (PAEs) and humic substances (HS) in sludge landfillstudy the abiotic association of two abundant PAEs (diethyl phthalate and di- -butyl phthalate) with humic

Keywords： abiotic association     phthalic acid esters (PAEs)     humic acid     sludge     landfill    

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Recovering humic substances from the dewatering effluent of thermally treated sludge and its performance

Yuning YANG,Huan LI

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 578-584 doi: 10.1007/s11783-015-0827-5

Abstract: dewatering effluent from thermally treated sludge is difficult due to the high concentration of refractory humicOn the other hand, humic substances are an important source of organic fertilizer.In this study, a novel process using ferric coagulant was developed to recover humic substances fromThe proper mass ratio of iron ions to humic substances was 0.6.In the recovered material, humic substances accounted for 24.2% of the total dry solids, and the amount

Keywords： sewage sludge     humic substances     recovery     phosphorus     fertilizer    

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variation in environmentally persistent free radicals and the generation of reactive radical species in humic

Yafang Shi, Yunchao Dai, Ziwen Liu, Xiaofeng Nie, Song Zhao, Chi Zhang, Hanzhong Jia

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1285-2

Abstract: Environmentally persistent free radicals (EPFRs) in humic substances play an essential role in soil geochemicalin aquatic environments; however, the impacts of light irradiation on the variation of EPFRs in soil humicIn this study, humic acid, fulvic acid, and humin were extracted from peat soil and then in situ irradiatedthe maximum spin density levels were up to 1.63 × 1017, 2.06 × 1017, and 1.77 × 1017 spins/g for the humicOur findings indicate that under the irradiation humic substances are likely to be more toxic and reactive

Keywords： Peat     Humic substances     Environmentally persistent free radicals     Light irradiation     Reactive radical species    

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Effects of water quality on the coagulation performances of humic acids irradiated with UV light

Wendong WANG,Qinghai FAN,Zixia QIAO,Qin YANG,Yabo WANG,Xiaochang WANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 147-154 doi: 10.1007/s11783-014-0749-7

Abstract: The presence of humic acid in drinking water treatment has received significant attention in recent yearspaper, the effects of water quality including pH, turbidity, alkalinity, and hardness on the removal of humicOur results suggested that UV light radiation could effectively improve the removal rate of humic acidAfter UV light radiation, the removal rate of the nitro-humic acid (NHA) increased from 20% to 60% inIn addition to NHA, the removal rates of the humic acid extracted from peat coal (PHA) and the humic

Keywords： coagulation     drinking water     humic acid     UV light radiation     water quality    

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Characterization of humic substances in bio-treated municipal solid waste landfill leachate

Guangxia QI, Dongbei YUE, Yongfeng NIE

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 711-716 doi: 10.1007/s11783-012-0421-z

Abstract: Humic substances (HSs) dominate the organic matter in bio-treated landfill leachate.with commercial HSs, MBR-HSs had lower carbon content [48.14% for fulvic acids (FA) and 49.52% for humic

Keywords： bio-treated landfill leachate     humic substances     elemental analysis     spectroscopic characteristics    

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Effects of humic acid and surfactants on the aggregation kinetics of manganese dioxide colloids

Xiaoliu HUANGFU,Yaan WANG,Yongze LIU,Xixin LU,Xiang ZHANG,Haijun CHENG,Jin JIANG,Jun MA

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 105-111 doi: 10.1007/s11783-014-0726-1

Abstract: Nevertheless, little is known about the aggregation kinetics of MnO colloids and the effect of humic

Keywords： humic acid     surfactant     aggregation kinetics     drinking water     manganese dioxide colloids    

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Application of ultra-sonication, acid precipitation and membrane filtration for co-recovery of protein and humic

Liangliang WEI,Kun WANG,Xiangjuan KONG,Guangyi LIU,Shuang CUI,Qingliang ZHAO,Fuyi CUI

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 327-335 doi: 10.1007/s11783-014-0763-9

Abstract: A novel method was applied to co-recover proteins and humic acid from the dewatered sewage sludge forsludge were first extracted using the processes of ultra-sonication and acid precipitation, and then the humicThe extraction efficiency was 125.9 mg humic acid?to the natural proteins and humic acid.In addition, the dewatered sludge could be easily biodegraded when the humic acid and proteins are extracted

Keywords： sewage sludge     co-recovery     proteins     humic acid     recycling     biodegradation rate    

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Title Author Date Type Operation

Persistent free radicals in humin under redox conditions and their impact in transforming polycyclic aromatic hydrocarbons

Hanzhong Jia, Yafang Shi, Xiaofeng Nie, Song Zhao, Tiecheng Wang, Virender K. Sharma

Journal Article

The Following-observing Method for Substance Flow Analysis

Lu Zhongwu

Journal Article

Effects of a structurally related substance on the crystallization of paracetamol

Ali SALEEMI, I.I. ONYEMELUKWE, Zoltan NAGY

Journal Article

Two-step hydrothermal conversion of biomass waste to humic acid using hydrochar as intermediate

Journal Article

Vanadium metabolism investigation using substance flow and scenario analysis

Fangfang ZHANG, Huiquan LI, Bo CHEN, Xue GUAN, Yi ZHANG

Journal Article

Electrochemical oxidation of humic acid at the antimony- and nickel-doped tin oxide electrode

TANG Chengli,YAN Wei,ZHENG Chunli

Journal Article

Effects of humic acid on residual Al control in drinking water treatment plants with orthophosphate addition

Wendong WANG, Hua LI, Zhenzhen DING, Xiaochang WANG, Rui LIU

Journal Article

Evolution of humic substances in polymerization of polyphenol and amino acid based on non-destructive

Jianmei Zou, Jianzhi Huang, Huichun Zhang, Dongbei Yue

Journal Article

Abiotic association of phthalic acid esters with humic acid of a sludge landfill

Xiaoli CHAI, Yongxia HAO, Xin ZHAO, Guixiang LIU, Ying ZHU, Rong JI, Jun WU, Huanhuan TONG, Youcai ZHAO

Journal Article

Recovering humic substances from the dewatering effluent of thermally treated sludge and its performance

Yuning YANG,Huan LI

Journal Article

variation in environmentally persistent free radicals and the generation of reactive radical species in humic

Yafang Shi, Yunchao Dai, Ziwen Liu, Xiaofeng Nie, Song Zhao, Chi Zhang, Hanzhong Jia

Journal Article

Effects of water quality on the coagulation performances of humic acids irradiated with UV light

Wendong WANG,Qinghai FAN,Zixia QIAO,Qin YANG,Yabo WANG,Xiaochang WANG

Journal Article

Characterization of humic substances in bio-treated municipal solid waste landfill leachate

Guangxia QI, Dongbei YUE, Yongfeng NIE

Journal Article

Effects of humic acid and surfactants on the aggregation kinetics of manganese dioxide colloids

Xiaoliu HUANGFU,Yaan WANG,Yongze LIU,Xixin LU,Xiang ZHANG,Haijun CHENG,Jin JIANG,Jun MA

Journal Article

Application of ultra-sonication, acid precipitation and membrane filtration for co-recovery of protein and humic

Liangliang WEI,Kun WANG,Xiangjuan KONG,Guangyi LIU,Shuang CUI,Qingliang ZHAO,Fuyi CUI

Journal Article