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21. Deep oxidation of pollutants using gold deposited on a high surface area cobalt oxide prepared by a nanocasting route

Author:
Solsona, Benjamín; Aylón, Elvira; Murillo, Ramón; Mastral, Ana M.; Monzonís, Alejandro; Agouram, Said; Davies, Thomas E.; Taylor, Stuart H.; Garcia, Tomás
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 544-552
ISSN:
0304-3894
Subject:
ambient temperature; catalysts; catalytic activity; cobalt; gold; oxidation; pollutants; propane; surface area; toluene
Abstract:
... Gold deposited on a cobalt oxide with high surface area (138m²g⁻¹), obtained through a nanocasting route using a siliceous KIT-6 mesoporous material as a hard template, has demonstrated high activity for the total oxidation of propane and toluene, and ambient temperature CO oxidation. The addition of gold promotes the activity when compared to a gold-free Co₃O₄ catalyst prepared using the same nan ...
DOI:
10.1016/j.jhazmat.2011.01.073

22. Disinfection byproducts in Canadian provinces: Associated cancer risks and medical expenses

Author:
Chowdhury, Shakhawat; Rodriguez, Manuel J.; Sadiq, Rehan
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 574-584
ISSN:
0304-3894
Subject:
bladder; breathing; byproducts; chlorination; colorectal neoplasms; cost estimates; disinfectants; disinfection; drinking water; exposure pathways; haloacetic acids; human health; humans; ingestion; risk; water treatment; Manitoba; Newfoundland and Labrador; Nova Scotia; Ontario; Quebec; Saskatchewan
Abstract:
... Chlorination for drinking water forms various disinfection byproducts (DBPs). Some DBPs are probably linked to human cancer (e.g., bladder, colorectal cancers) and other chronic and sub-chronic effects. This emphasizes the need to understand and characterize DBPs in drinking water and possible risks to human health. In this study, occurrences of DBPs throughout Canada were investigated. Trihalomet ...
DOI:
10.1016/j.jhazmat.2011.01.085

23. Does waterborne citalopram affect the aggressive and sexual behaviour of rainbow trout and guppy?

Author:
Holmberg, Anna; Fogel, Jenny; Albertsson, Eva; Fick, Jerker; Brown, Jeffrey N.; Paxéus, Nicklas; Förlin, Lars; Johnsson, Jörgen I.; Larsson, D.G. Joakim
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 596-599
ISSN:
0304-3894
Subject:
Oncorhynchus mykiss; Poecilia reticulata; adults; adverse effects; aggression; aquatic organisms; effluents; humans; males; serotonin; sewage treatment; sexual behavior
Abstract:
... Citalopram is one of several selective serotonin reuptake inhibitors (SSRIs) commonly found in treated sewage effluents. Accordingly, there are concerns about possible adverse effects of SSRIs on aquatic organisms, particularly behavioural effects similar to those associated with SSRI use in humans. Rainbow trout fry and adult male guppies were therefore exposed to waterborne citalopram, ranging f ...
DOI:
10.1016/j.jhazmat.2011.01.055

24. Effect of aging period on the characteristics and coagulation behavior of polyferric chloride and polyferric chloride–polyamine composite coagulant for synthetic dying wastewater treatment

Author:
Gao, Baoyu; Liu, Bin; Chen, Ting; Yue, Qinyan
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 413-420
ISSN:
0304-3894
Subject:
coagulants; coagulation; decolorization; iron; pH; perfluorocarbons; wastewater; wastewater treatment; zeta potential
Abstract:
... In this paper, a new composite inorganic–organic coagulant (PFC–EPI–DMA) was prepared by polyferric chloride (PFC) and epichlorohydrin–dimethylamine (EPI–DMA) under a given EPI–DMA/Fe and OH/Fe molar ratio. In comparison with PFC, the Fe (III) species and zeta potential of PFC–EPI–DMA were measured. Then their coagulation performance and coagulation kinetics for treating synthetic reactive dying w ...
DOI:
10.1016/j.jhazmat.2011.01.044

25. Effect of shear force, solution pH and breakage period on characteristics of flocs formed by Titanium tetrachloride (TiCl₄) and Polyaluminum chloride (PACl) with surface water treatment

Author:
Zhao, Y.X.; Gao, B.Y.; Shon, H.K.; Kim, J.-H.; Yue, Q.Y.
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 495-501
ISSN:
0304-3894
Subject:
coagulants; pH; regrowth; surface water; titanium; water treatment
Abstract:
... The growth, breakage and regrowth nature of flocs formed by Titanium tetrachloride (TiCl₄) and polyaluminum chloride (PACl) was comparatively evaluated with surface water treatment. A series of jar experiments were conducted to investigate the impacts of different operating parameters such as shear force, solution pH and a breakage period on floc strength and re-aggregation potential. Results indi ...
DOI:
10.1016/j.jhazmat.2011.01.064

26. Effects of elevated CO₂ concentrations and fly ash amended soils on trace element accumulation and translocation among roots, stems and seeds of Glycine max (L.) Merr.

Author:
Rodriguez, J.H.; Klumpp, A.; Fangmeier, A.; Pignata, M.L.
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 58-66
ISSN:
0304-3894
Subject:
Glycine max; biomass; bromine; carbon dioxide; cobalt; copper; crops; fly ash; food consumption; food safety; heavy metals; human health; humans; iron; lead; manganese; maturity stage; nickel; risk; roots; seeds; soil; soil amendments; soybeans; stems; zinc
Abstract:
... The carbon dioxide (CO₂) levels of the global atmosphere and the emissions of heavy metals have risen in recent decades, and these increases are expected to produce an impact on crops and thereby affect yield and food safety. In this study, the effects of elevated CO₂ and fly ash amended soils on trace element accumulation and translocation in the root, stem and seed compartments in soybean [Glyci ...
DOI:
10.1016/j.jhazmat.2010.11.068

27. Effects on spermatogenesis in swiss mice of a protein isolated from the roots of Ricinus communis (Linn.) (Euphorbiaceae)

Author:
Nithya, R.S.; Anuja, M.M.; Swathy, S.S.; Rajamanickam, C.; Indira, M.
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 386-392
ISSN:
0304-3894
Subject:
trypsin; malic enzyme; dose response; blood serum; NADP-glucose-6-phosphate dehydrogenase; spermatogenesis; body weight; chymotrypsin; Ricinus communis; males; proteolysis; sperm motility; cholesterol; digestion; mice; testosterone; roots; hydroxymethylglutaryl-CoA reductases
Abstract:
... This study was aimed to evaluate the effect on spermatogenesis of a 62kDa protein (Rp) isolated from 50% ethanolic extract of the root of Ricinus communis in mice. A dose response study in mice revealed that 25mg/kg body weight/day was the most effective dose. Swiss strain mature male mice of 30 days old were divided into two group namely control and Rp treated (25mg/kg body weight/day). The study ...
DOI:
10.1016/j.jhazmat.2011.01.039

28. Enhanced pervaporative desulfurization by polydimethylsiloxane membranes embedded with silver/silica core–shell microspheres

Author:
Cao, Ruijian; Zhang, Xiongfei; Wu, Hong; Wang, Jingtao; Liu, Xiaofei; Jiang, Zhongyi
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 324-332
ISSN:
0304-3894
Subject:
silica; sulfur; X-ray photoelectron spectroscopy; X-ray diffraction; thiophene; mixing; sorption; silver; catalytic cracking; gasoline; transmission electron microscopy
Abstract:
... Pervaporative desulfurization based on membrane technology provides a promising alternative for removal of sulfur substances (as represented by thiophene) in fluid catalytic cracking (FCC) gasoline. The present study focused on the performance enhancement of polydimethylsiloxane (PDMS) membrane by incorporation of core–shell structured silver/silica microspheres. A silane coupling agent, N-[3-(tri ...
DOI:
10.1016/j.jhazmat.2011.01.031

29. Enhanced visible light photocatalytic activity of novel Pt/C-doped TiO₂/PtCl₄ three-component nanojunction system for degradation of toluene in air

Author:
Dong, Fan; Wang, Haiqiang; Sen, Guo; Wu, Zhongbiao; Lee, S.C.
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 509-516
ISSN:
0304-3894
Subject:
photocatalysis; titanium dioxide; electron transfer; physicochemical properties; air; oxidation; nanoparticles; toluene; photocatalysts
Abstract:
... C-doped TiO₂ nanoparticles prepared by partial oxidation of TiC were modified with Pt species by impregnation–calcination method in order to enhance the visible light photocatalytic activity. The physicochemical properties of as-prepared samples were characterized by various techniques in detail. The results indicated that a novel Pt/C-doped TiO₂/PtCl₄ three-component nanojunction system was forme ...
DOI:
10.1016/j.jhazmat.2011.01.062

30. Enhancement of waste activated sludge dewaterability by electro-chemical pretreatment

Author:
Yuan, Hai-ping; Yan, Xiao-fei; Yang, Cai-feng; Zhu, Nan-wen
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 82-88
ISSN:
0304-3894
Subject:
activated sludge; dewatering; electric power; electrolysis; filtration
Abstract:
... The potential effects of electro-chemical conditioning on sludge dewatering treatments and its mechanism were investigated in this study. Capillary suction time (CST) and specific resistance to filtration (SRF) were used to evaluate sludge dewaterability. Extracellular polymeric substance (EPS) content and sludge disintegration degree (DDSCOD) were also determined in an attempt to explain the obse ...
DOI:
10.1016/j.jhazmat.2010.12.106

31. ETBE (ethyl tert butyl ether) and TAME (tert amyl methyl ether) affect microbial community structure and function in soils

Author:
Bartling, Johanna; Esperschütz, Jürgen; Wilke, Berndt-Michael; Schloter, Michael
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 488-494
ISSN:
0304-3894
Subject:
Gram-positive bacteria; biodegradation; community structure; emissions; gasoline; microbial communities; phospholipid fatty acids; soil; soil microorganisms
Abstract:
... Ethyl tert butyl ether (ETBE) and tert amyl methyl ether (TAME) are oxygenates used in gasoline in order to reduce emissions from vehicles. The present study investigated their impact on a soil microflora that never was exposed to any contamination before. Therefore, soil was artificially contaminated and incubated over 6 weeks. Substrate induced respiration (SIR) measurements and phospholipid fat ...
DOI:
10.1016/j.jhazmat.2011.01.058

32. Evaluation of formaldehyde and VOCs emission factors from paints in a small chamber: The effects of preconditioning time and coating weight

Author:
Kim, Jin-A; Kim, Sumin; Kim, Hyun-Joong; Kim, Yong-Shik
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 52-57
ISSN:
0304-3894
Subject:
coatings; emissions factor; emulsions; formaldehyde; paints; volatile organic compounds; Korean Peninsula
Abstract:
... The aims of this study were to improve the emission test method for the 20L small chamber standardized in Korea using paints and to develop an optical test method for paints. The emission factors of the total volatile organic compounds (TVOC) and formaldehyde from oil-based paints, emulsion paints and water-dispersion paints coated at 300g/m² and cured for 24 (48)h were determined using the 20L sm ...
DOI:
10.1016/j.jhazmat.2010.10.094

33. Facile synthesis of Ag nanoparticles supported on MWCNTs with favorable stability and their bactericidal properties

Author:
Li, Zhenzi; Fan, Lijun; Zhang, Tao; Li, Kang
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 466-472
ISSN:
0304-3894
Subject:
Escherichia coli; X-ray diffraction; absorption; antibacterial properties; bacteria; carbon nanotubes; nanocomposites; nanosilver; nitrogen; particle size; scanning electron microscopy; solar radiation; spectroscopy; transmission electron microscopy
Abstract:
... Stable Ag nanoparticles supported on multi-walled carbon nanotubes (MWCNTs) have been successfully synthesized by calcinations of the complexes of Ag cation and acid-treated MWCNTs under sparging N₂. The nanocomposites are characterized in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and UV–visible absorption spectroscopy. The result ...
DOI:
10.1016/j.jhazmat.2011.01.050

34. Fixed-bed column study for Cu²⁺ removal from solution using expanding rice husk

Author:
Luo, Xuegang; Deng, Zaifang; Lin, Xiaoyan; Zhang, Chi
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 182-189
ISSN:
0304-3894
Subject:
activated carbon; adsorption; copper; desorption; hydrochloric acid; rice hulls; sodium hydroxide
Abstract:
... This paper deals with removal of copper ions from solution by raw rice husk (RRH) and expanding rice husk (ERH). Different column design parameters like bed depth, flow rate and initial copper concentration were investigated. It was found that the equilibrium uptake (qₑq₍ₑₓₚ₎) of the ERH and RRH increased with increase in initial copper concentration but decreased with increase in flow rate and be ...
DOI:
10.1016/j.jhazmat.2011.01.019

35. Formaldehyde and TVOC emission behavior of laminate flooring by structure of laminate flooring and heating condition

Author:
An, Jae-Yoon; Kim, Sumin; Kim, Hyun-Joong
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 44-51
ISSN:
0304-3894
Subject:
air; floors; formaldehyde; heat; heating systems; temperature; toluene; volatile organic compounds; xylene
Abstract:
... Formaldehyde was measured with a desiccator, a 20L chamber and the FLEC method. The formaldehyde emission rate from laminate was the highest at 32°C using the desiccator, which then decreased with time. The formaldehyde emission using the 20L small chamber and FLEC showed a similar tendency. There was a strong correlation between the formaldehyde and total volatile organic compounds (TVOCs) with b ...
DOI:
10.1016/j.jhazmat.2010.08.086

36. Health risk characterisation for environmental pollutants with a new concept of overall risk probability

Author:
Cao, Qiming; Yu, Qiming; Connell, Des W.
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 480-487
ISSN:
0304-3894
Subject:
adverse effects; case studies; estradiol; fish; pollutants; risk; risk assessment; surface water
Abstract:
... In health risk assessment, risk is commonly characterised by calculating a simple hazard quotient (HQ), which cannot reflect the actual distribution of exposure and health effect values. This study aimed to develop a new risk characterisation method, the overall risk probability (ORP) method based on probabilistic techniques. Exposure exceedence values were calculated to obtain an exposure exceede ...
DOI:
10.1016/j.jhazmat.2011.01.054

37. Historical changes in polycyclic aromatic hydrocarbons (PAHs) input in Lake Baiyangdian related to regional socio-economic development

Author:
Guo, Wei; Pei, Yuansheng; Yang, Zhifeng; Chen, He
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 441-449
ISSN:
0304-3894
Subject:
coal; combustion; developed countries; lakes; organic matter; pollution control; polycyclic aromatic hydrocarbons; rain; sediments; socioeconomic development; watersheds; wood
Abstract:
... The accumulation of polycyclic aromatic hydrocarbons (PAHs) over a period of almost 180 years was studied in a sediment core collected from Lake Baiyangdian in northern China. Total PAHs concentration varied from 97.2 to 2402ngg⁻¹ dry weight. We found the highest total PAH concentration in 1940s and 1990s, and a decreasing trend from 1990 until present. The warfare and increasing economic activity ...
DOI:
10.1016/j.jhazmat.2011.01.052

38. Increased temperature in the thermophilic stage in temperature phased anaerobic digestion (TPAD) improves degradability of waste activated sludge

Author:
Ge, Huoqing; Jensen, Paul D.; Batstone, Damien J.
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 355-361
ISSN:
0304-3894
Subject:
activated sludge; anaerobic digestion; hydrolysis; methane production; pH; pretreatment; sewage; temperature
Abstract:
... Two-stage temperature phased anaerobic digestion (TPAD) is an increasingly popular method to improve stabilisation of sewage waste activated sludge, which normally has inherently poor and slow degradation. However, there has been limited systematic analysis of the impact of the initial thermophilic stage (temperature, pH and retention time) on performance in the main mesophilic stage. In this stud ...
DOI:
10.1016/j.jhazmat.2011.01.032

39. Kinetic and chemical characterization of thermal decomposition of dicumylperoxide in cumene

Author:
Di Somma, Ilaria; Marotta, Raffaele; Andreozzi, Roberto; Caprio, Vincenzo
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 157-163
ISSN:
0304-3894
Subject:
chemical analysis; ethane; explosions; financial economics; industry; methane production; oxygen; people; peroxides; polymers; temperature; thermal degradation; thermal properties
Abstract:
... Dicumylperoxide (DCP) is one of the most used peroxides in the polymer industry. It has been reported that its thermal decomposition can result in runaway phenomena and thermal explosions with significant economic losses and injuries to people. In the present paper thermal behaviour of dicumylperoxide in cumene was investigated over the temperature range of 393–433K under aerated and de-aerated co ...
DOI:
10.1016/j.jhazmat.2011.01.023

40. Kinetics and mechanism of arsenate removal by nanosized iron oxide-coated perlite

Author:
Mostafa, M.G.; Chen, Yen-Hua; Jean, Jiin-Shuh; Liu, Chia-Chuan; Lee, Yao-Chang
Source:
Journal of hazardous materials 2011 v.187 no.1-3 pp. 89-95
ISSN:
0304-3894
Subject:
adsorbents; adsorption; anions; arsenic; models; pH; perlite; remediation; sorption isotherms
Abstract:
... This study discussed the adsorption kinetics of As(V) onto nanosized iron oxide-coated perlite. The effects of pH, initial concentration of As(V) and common anions on the adsorption efficiency were also investigated. It was observed that a 100% As(V) adsorption was achieved at pH value of 4–8 from the initial concentration containing 1.0 mg-As(V)L⁻¹ and the adsorption percentage depended on the in ...
DOI:
10.1016/j.jhazmat.2010.12.117