Journal of Environmental Sciences

Items from 1 to 20 out of 234 results

article

Regeneration of 2-amino-2-methyl-1-propanol used for carbon dioxide absorption

Pei ZHANG, Yao SHI, Jianwen WEI, Wei ZHAO, more

Journal of Environmental Sciences > 2008 > 20 > 1 > 39-44

To improve the efficiency of the carbon dioxide cycling process and to reduce the regeneration energy consumption, a sterically hindered amine of 2-amino-2-methyl-1-propranol (AMP) was investigated to determine its regeneration behavior as a CO ₂ absorbent. The CO ₂ absorption and amine regeneration characteristics were experimentally examined under various operating conditions. The...

article

A review on the generation, determination and mitigation of Urban Heat Island

Ahmed Memon RIZWAN, Leung Y.C. DENNIS, Chunho LIU

Journal of Environmental Sciences > 2008 > 20 > 1 > 120-128

Urban Heat Island (UHI) is considered as one of the major problems in the 21st century posed to human beings as a result of urbanization and industrialization of human civilization. The large amount of heat generated from urban structures, as they consume and re-radiate solar radiations, and from the anthropogenic heat sources are the main causes of UHI. The two heat sources increase the temperatures...

article

Purification of total DNA extracted from activated sludge

Guobin SHAN, Wenbiao JIN, Edward KH LAM, Xinhui XING

Journal of Environmental Sciences > 2008 > 20 > 1 > 80-87

Purification of the total DNA extracted from activated sludge samples was studied. The effects of extraction buffers and lysis treatments (lysozyme, sodium dodecyl sulfate (SDS), sonication, mechanical mill and thermal shock) on yield and purity of the total DNA extracted from activated sludge were investigated. It was found that SDS and mechanical mill were the most effective ways for cell lysis,...

article

Investigation on emission factors of particulate matter and gaseous pollutants from crop residue burning

Guoliang CAO, Xiaoye ZHANG, Sunling GONG, Fangcheng ZHENG

Journal of Environmental Sciences > 2008 > 20 > 1 > 50-55

Emission factors of particulate matter (PM), element carbon (EC), organic carbon (OC), SO ₂ , NO _x , CO, CO ₂ , and ten ions (Na ⁺ , NH ₄ ⁺ , K ⁺ , Mg ² ⁺ , Ca ² ⁺ , F ⁻ , Cl ⁻ , NO ₂ ⁻ , NO ₃ ⁻ , SO ₄ ² ⁻ ) were estimated from the domestic burning of four types of commonly...

article

Potential of Pteris vittata L. for phytoremediation of sites co-contaminated with cadmium and arsenic: The tolerance and accumulation

Xiyuan XIAO, Tongbin CHEN, Zhizhuang AN, Mei LEI, more

Journal of Environmental Sciences > 2008 > 20 > 1 > 62-67

Field investigation and greenhouse experiments were conducted to study the tolerance of Pteris vittata L. (Chinese brake) to cadmium (Cd) and its feasibility for remediating sites co-contaminated with Cd and arsenic (As). The results showed that P. vittata could survive in pot soils spiked with 80 mg/kg of Cd and tolerated as great as 301 mg/kg of total Cd and 26.8 mg/kg of diethyltriaminepenta acetic...

article

Arsenic removal from contaminated soil using phosphoric acid and phosphate

Min ZENG, Bohan LIAO, Ming LEI, Yong ZHANG, more

Journal of Environmental Sciences > 2008 > 20 > 1 > 75-79

Laboratory batch experiments were conducted to study arsenic (As) removal from a naturally contaminated soil using phosphoric acid (H ₃ PO ₄ ) and potassium dihydrogen phosphate (KH ₂ PO ₄ ). Both H ₃ PO ₄ and KH ₂ PO ₄ proved to reduce toxicity of the soil in terms of soil As content, attaining more than 20% As removal at a concentration...

article

Relation of hepatic EROD activity and cytochrome P4501A level in Sebastiscus marmoratus exposed to benzo[a]pyrene

Yun WANG, Ronghui ZHENG, Zhenghong ZUO, Yixin CHEN, more

Journal of Environmental Sciences > 2008 > 20 > 1 > 101-104

This study was designed to investigate the in vivo effects of benzo[a]pyrene (BaP) on hepatic ethoxyresorufin-O-deethylase (EROD) activity and its correlation with cytochrome P4501A (CYP1A) protein levels in Sebastiscus marmoratus, which were exposed through a water column to BaP (10, 100, 1000 ng/L, respectively) or were treated with intraperitoneal injections of BaP (0.5, 1, 5, 10 mg/kg, respectively)...

article

Observation of the nighttime nitrate radical in Hefei, China

Suwen LI, Wenqing LIU, Pinua XIE, Ang LI, more

Journal of Environmental Sciences > 2008 > 20 > 1 > 45-49

Observation of nighttime nitrate radical (NO ₃ ) was performed by using long path differential optical absorption spectroscopy (LP-DOAS), on the outskirts of Hefei, China. The time series of NO ₃ and supporting parameters were simultaneously measured for a week (31 May–7 June 2006). The results indicated that the average concentration of NO ₃ was 15.6 pptv with an average lifetimes...

article

Degradation of corn stalk by the composite microbial system of MC1

Peng GUO, Xiaofen WANG, Wanbin ZHU, Hongyan YANG, more

Journal of Environmental Sciences > 2008 > 20 > 1 > 109-114

The composite microbial system of MC1 was used to degrade corn stalk in order to determine properties of the degraded products as well as bacterial composition of MC1. Results indicated that the pH of the fermentation broth was typical of lignocellulose degradation by MC1, decreasing in the early phase and increasing in later stages of the degradation. The microbial biomass peaked on the day 3 after...

article

Single and joint effects of petroleum hydrocarbons and cadmium on the polychaete Perinereis aibuhitensis Grube

Jing WANG, Qixing ZHOU, Qianru ZHANG, Ying ZHANG

Journal of Environmental Sciences > 2008 > 20 > 1 > 68-74

Using the concentration gradient and combined pollutant exposure method, the single and joint effects of petroleum hydrocarbons (PHCs) and cadmium (Cd) on polychaete Perinereis aibuhitensis Grube, an ecologically keystone species in estuarine and coastal environment, have been investigated. The results indicate that the toxicity of PHCs to P. aibuhitensis is stronger than that of Cd to the organism...

article

Effects of culture conditions on ligninolytic enzymes and protease production by Phanerochaete chrysosporium in air

Xiaoping XIONG, Xianghua WEN, Yanan BAI, Yi QIAN

Journal of Environmental Sciences > 2008 > 20 > 1 > 94-100

The production of ligninolytic enzymes and protease by Phanerochaete chrysosporium was investigated under different culture conditions. Different amounts of medium were employed in free and immobilized culture, together with two kinds of medium with different C/N ratios. Little lignin peroxidase (LiP) (< 2U/L) was detected in free culture with nitrogen-limited medium (C/N ratio: 56/2.2, in mmol/L),...

article

Research progress of novel adsorption processes in water purification: A review

Jiuhui QU

Journal of Environmental Sciences > 2008 > 20 > 1 > 1-13

As an effective, efficient, and economic approach for water purification, adsorbents and adsorption processes have been widely studied and applied in different aspects for a long time. In the recent years, a lot of novel adsorption processes have been developed for enhancing the efficiency of removing the organic and inorganic contaminants from water. This article reviews some new adsorbents and advanced...

article

Progress in carbon dioxide separation and capture: A review

Hongqun Yang, Zhenghe Xu, Maohong Fan, Rajender Gupta, more

Journal of Environmental Sciences > 2008 > 20 > 1 > 14-27

This article reviews the progress made in CO ₂ separation and capture research and engineering. Various technologies, such as absorption, adsorption, and membrane separation, are thoroughly discussed. New concepts such as chemical-looping combustion and hydrate-based separation are also introduced briefly. Future directions are suggested. Sequestration methods, such as forestation, ocean fertilization...

article

Quantitative structure-activity relationships for joint toxicity of substituted phenols and anilines to Scenedesmus obliquus

Chao WANG, Guanghua LU, Zhuyun TANG, Xiaoling GUO

Journal of Environmental Sciences > 2008 > 20 > 1 > 115-119

There are often many chemicals coexisting in aquatic ecosystems, and few information on the joint toxicity of a mixture of organic pollutants is available at present. The 48-h toxicity of substituted phenols and anilines and their binary mixtures to Scenedesmus obliquus was determined by the algae inhibition test. The median effective inhibition concentration EC ₅₀ values for single compounds...

article

Study on the removal of NOx from simulated flue gas using acidic NaClO2 solution

Bal Raj Deshwal, Si Hyun Lee, Jong Hyeon Jung, Byung Hyun Shon, more

Journal of Environmental Sciences > 2008 > 20 > 1 > 33-38

The study on the removal of NO _x from simulated flue gas has been carried out in a lab-scale bubbling reactor using acidic solutions of sodium chlorite. Experiments were performed at various pH values and inlet NO concentrations in the absence or presence of SO ₂ gas at 45°C. The effect of SO ₂ on NO oxidation and NO ₂ absorption was critically examined. The oxidative...

article

Determination of atmospheric hydroxyl radical by HPLC coupled with electrochemical detection

Bin LIU, Hui-xiang WANG

Journal of Environmental Sciences > 2008 > 20 > 1 > 28-32

The hydroxyl radical (·OH) plays a central role in the oxidation and removal of many atmospheric compounds. Measurement of atmospheric ·OH is very difficult because of its high reactivity and low atmospheric abundance. In this article, a simple and highly sensitive method, high performance liquid chromatography coupled with coulometric detection (HPLC-CD), was developed to determine ·OH indirectly...

article

Effects of glucose on the decolorization of Reactive Black 5 by yeast isolates

Qingxiang YANG, Lingxia TAO, Min YANG, Hao ZHANG

Journal of Environmental Sciences > 2008 > 20 > 1 > 105-108

The cometabolic roles of glucose were investigated in decolorization of an azo dye, Reactive Black 5, by yeast isolates, Debaryomyces polymorphus and Candida tropicalis. The results indicated that the dye degradation by the two yeasts was highly associated with the yeast growth process and glucose presence in the medium. Color removal of 200 mg dye/L was increased from 76.4% to 92.7% within 60 h to...

article

Polycyclic aromatic hydrocarbon biodegradation and extracellular enzyme secretion in agitated and stationary cultures of Phanerochaete chrysosporium

Juan DING, Jun CONG, Juan ZHOU, Shixiang GAO

Journal of Environmental Sciences > 2008 > 20 > 1 > 88-93

The extracellular enzyme secretion and biodegradation of polycyclic aromatic hydrocarbons (PAHs) were studied in agitated and shallow stationary liquid cultures of Phanerochaete chrysosporium. Veratryl alcohol and Tween80 were added to cultures as lignin peroxidase (LiP) and manganese peroxidase (MnP) inducer, respectively. Shallow stationary cultures were suitable for the production of enzyme, whereas...

article

Tracing the behaviour of hexachlorobenzene in a paddy soil-rice system over a growth season

Hua YANG, Minghui ZHENG, Yongguan ZHU

Journal of Environmental Sciences > 2008 > 20 > 1 > 56-61

Hexachlorobenzene (HCB), a persistent organic pollutant (POP), has been found in paddy soils. To improve the understanding of HCB contamination in paddy soils, a laboratory simulative study was carried out to investigate the behavior of HCB in a paddy soil and rice plants. This study was divided into three experiments. First, an experiment aimed to examine the evaporation of HCB in paddy soil. In...

article

Biosorption characteristics of unicellular green alga Chlorella sorokiniana immobilized in loofa sponge for removal of Cr(III)

Nasreen AKHTAR, Muhammad IQBAL, Saeed Iqbal ZAFAR, Javed IQBAL

Journal of Environmental Sciences > 2008 > 20 > 2 > 231-239

Loofa sponge (LS) immobilized biomass of Chlorella sorokiniana (LSIBCS), isolated from industrial wastewater, was investigated as a new biosorbent for the removal of Cr(III) from aqueous solution. A comparison of the biosorption of Cr(III) by LSIBCS and free biomass of C. sorokiniana (FBCS) from 10–300 mg Cr(III)/L aqueous solutions showed an increase in uptake of 17.79% when the microalgal biomass...

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20
Year:
2008

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Keywords

ADSORPTION (12)
BIODEGRADATION (9)
HEAVY METAL (8)
KINETICS (8)
NITROBENZENE (7)
SOIL (7)
CADMIUM (6)
SEDIMENT (6)
HEAVY METALS (5)
MINERALIZATION (5)
ACTIVATED SLUDGE (4)
BACTERIA (4)
DECHLORINATION (4)
DECOLORIZATION (4)
DEGRADATION (4)
DESORPTION (4)
MICROBIAL DIVERSITY (4)
ORGANIC CARBON (4)
PCR-DGGE (4)
PHOSPHORUS (4)
POLYCYCLIC AROMATIC HYDROCARBONS (PAHS) (4)
RICE (4)
ADSORPTION ISOTHERM (3)
ARSENIC (AS) (3)
BIOSORPTION (3)
CHLORINATION (3)
COPPER (3)
DGGE (3)
GEOACCUMULATION INDEX (3)
IMMOBILIZATION (3)
ISOTHERM (3)
LEACHATE (3)
LEAD (3)
NITROGEN (3)
PADDY SOIL (3)
PH (3)
SEQUENTIAL EXTRACTION (3)
SEWAGE SLUDGE (3)
SORPTION (3)
THE SONGHUA RIVER (3)
TOXICITY (3)
WASTEWATER (3)
16S RDNA CLONE LIBRARY (2)
AEROBIC DEGRADATION (2)
ALGINATE (2)
AZO DYE (2)
BIOAUGMENTATION (2)
BIOAVAILABILITY (2)
BIOFILTRATION (2)
BIOLOG (2)
BIOREMEDIATION (2)
CARBON DIOXIDE (2)
CARBON STORAGE (2)
CD2+ (2)
CONSTRUCTED WETLAND (2)
DECOMPOSITION (2)
DENATURING GRADIENT GEL ELECTROPHORESIS (DGGE) (2)
DISSOLVED ORGANIC MATTER (DOM) (2)
DISTRIBUTION (2)
ENTHALPY OF ADSORPTION (2)
ENVIRONMENTAL FACTORS (2)
EXPANDED GRANULAR SLUDGE BED (EGSB) (2)
FLUE GAS (2)
FUNGI (2)
GRANULAR SLUDGE (2)
HUMIC ACID (2)
HYDROLYSIS (2)
INTERMEDIATES (2)
ISOTHERMS (2)
LOW TEMPERATURE (2)
MICROBIAL COMMUNITY (2)
N2O FLUX (2)
NITRIFICATION INHIBITOR (2)
PALM OIL MILL EFFLUENT (2)
PCR (2)
PENTACHLOROPHENOL (PCP) (2)
PESTICIDE (2)
PHANEROCHAETE CHRYSOSPORIUM (2)
PHENOL (2)
PHOSPHOLIPID FATTY ACID (PLFA) (2)
PHOTODEGRADATION (2)
PHYTOREMEDIATION (2)
PM10 (2)
POLLUTION (2)
POLYCHLORINATED BIPHENYLS (2)
RHIZOSPHERE (2)
SOURCE APPORTIONMENT (2)
TEMPERATURE (2)
TOLUENE (2)
TUNNEL (2)
UPTAKE (2)
URBANIZATION (2)
WASH WATER (2)
WATER PURIFICATION (2)
ZINC (2)
1,2,3,7,8-PECDD (1)
1,2,4-TRICHLOROBENZENE (TCB) (1)
16S RDNA (1)
16S RDNA CLONE LIBRARIES (1)
16S RRNA (1)
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INFONA - science communication portal

Journal of Environmental Sciences

Regeneration of 2-amino-2-methyl-1-propanol used for carbon dioxide absorption

A review on the generation, determination and mitigation of Urban Heat Island

Purification of total DNA extracted from activated sludge

Investigation on emission factors of particulate matter and gaseous pollutants from crop residue burning

Potential of Pteris vittata L. for phytoremediation of sites co-contaminated with cadmium and arsenic: The tolerance and accumulation

Arsenic removal from contaminated soil using phosphoric acid and phosphate

Relation of hepatic EROD activity and cytochrome P4501A level in Sebastiscus marmoratus exposed to benzo[a]pyrene

Observation of the nighttime nitrate radical in Hefei, China

Degradation of corn stalk by the composite microbial system of MC1

Single and joint effects of petroleum hydrocarbons and cadmium on the polychaete Perinereis aibuhitensis Grube

Effects of culture conditions on ligninolytic enzymes and protease production by Phanerochaete chrysosporium in air

Research progress of novel adsorption processes in water purification: A review

Progress in carbon dioxide separation and capture: A review

Quantitative structure-activity relationships for joint toxicity of substituted phenols and anilines to Scenedesmus obliquus

Study on the removal of NOx from simulated flue gas using acidic NaClO2 solution

Determination of atmospheric hydroxyl radical by HPLC coupled with electrochemical detection

Effects of glucose on the decolorization of Reactive Black 5 by yeast isolates

Polycyclic aromatic hydrocarbon biodegradation and extracellular enzyme secretion in agitated and stationary cultures of Phanerochaete chrysosporium

Tracing the behaviour of hexachlorobenzene in a paddy soil-rice system over a growth season

Biosorption characteristics of unicellular green alga Chlorella sorokiniana immobilized in loofa sponge for removal of Cr(III)

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