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- Trend (2)
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- Acid mine drainage (1)
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- Bangkok Metropolis (1)
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- Inter-phase mass transfer (1)
- Iron-phosphate coating (1)
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Articles 1 - 12 of 12
Full-Text Articles in Social and Behavioral Sciences
Effect Of Organochlorines On Human Endocrine System, Ratana Sapbamrer
Effect Of Organochlorines On Human Endocrine System, Ratana Sapbamrer
Applied Environmental Research
Organochlorines are classified as persistent organic pollutants and endocrine disrupters. They were widely used for insect control and malaria vector control programs. Although most organochlorines were officially banned in many countries, high levels have been found in ecosystem and food chain. Because organochlorines act as endocrine disrupters and lipid soluble chemicals, it is difficult to excrete these environmental pollutants from the body, and consequently caused adverse effects on endocrine system in wildlife and humans. Epidemiological studies have suggested that exposure to organochlorines in adults linked with an increase incidence of reproductive tract abnormalities, decreased sperm quantities and qualities, and reproductive …
Relationship Of The Quantity Of Blood Lead Levels And The Knowledge, Work Practice, And Attitude Of Workers In A Recycling Battery Factory In Nakhonsawan Province, Santi Keadthongthawee, Piyalamporn Havanond
Relationship Of The Quantity Of Blood Lead Levels And The Knowledge, Work Practice, And Attitude Of Workers In A Recycling Battery Factory In Nakhonsawan Province, Santi Keadthongthawee, Piyalamporn Havanond
Applied Environmental Research
This research was a cross-sectional study. The purpose was to study relationship between knowledge, work practice and attitude of workers toward quantity of lead in their blood. The study took place during January-December 2008 in a recycling battery factory in Nakhonsawan Province by means of purposive sampling. Relevant data were gathered by structured questionnaire which was tested for reliability by means of Cronbach's alpha coefficient. Analysis of the relationship was performed via Pearson's product-moment correlation coefficient. The statistical significance was considered when p < 0.05. The results of the study of total 72 workers were as followings: average score of knowledge was 12.8 out of 15 with the SD of 1.6, max score of 15 and min score of 9; average behavior score of workers was 12.9 out of 15 with SD of 1.3, max score of 15 and min score of 9; average score on attitude was 22.7 out of 30 with SD of 0.94, max score 25 and min score of 21. Hence, majority of them were in good knowledge (86.1 %) and had good work practice (93.1 %). As well, all workers (100 %) had good attitude. Significant (p < 0.05) relationship between levels of lead in blood and behavior of workers was found. The workers with high quantity of lead in their blood stream took more precaution on their work practice. This might be the fact that they knew that lead in blood could naturally be released by mechanism of body. Furthermore, the condition could be improved if they do not obtain further lead. On the other aspect, the relationship between age and level of lead in blood is also significant (p < 0.001). The workers with older age had more quantity of lead in blood than young workers. However, there was no relationship among quantity of lead in blood toward attitude or knowledge of the workers. From the study, it is suggested that annual blood test and physical examination of all workers should be implemented. Furthermore, it should emphasize on the campaign of good work practice. Especially, smoking during working hour must be strictly prohibited, since the protection mask has to be taken off and open the chance of taking the lead in.
Potential Of End Of Life Vehicles Directive Implementation In Thai Automotive Industry, Sayam Aroonsrimorakot, Sirirat Akaraj
Potential Of End Of Life Vehicles Directive Implementation In Thai Automotive Industry, Sayam Aroonsrimorakot, Sirirat Akaraj
Applied Environmental Research
The objectives of this research were to study the potential of end of life vehicles (ELV) directive implementation in Thai Automotive Industry in Thailand. This research was divided into 2 parts; a survey research using questionnaire with 113 Thai automotive entrepreneurs, qualitative research using indepth interview with relevant persons related to automotive industry. The results indicated that Thai Automotive entrepreneurs had impacts from the ELV directive at a medium level, the average score was 2.94. The readiness for undertaking ELV directive was at medium level, the average score was 3.22. Problems and obstacles in implementing ELV directive were knowledge and …
Potential Of Recycle Waste Bank Project For Community Waste Reduction: A Case Study Of Sub-Sin Pattana Community, Bang Khun Thien, Bangkok, Sayam Aroonsrimorakot, Piyaruk Pradabphetrat
Potential Of Recycle Waste Bank Project For Community Waste Reduction: A Case Study Of Sub-Sin Pattana Community, Bang Khun Thien, Bangkok, Sayam Aroonsrimorakot, Piyaruk Pradabphetrat
Applied Environmental Research
This research studied the potential of a recyclable waste bank (RWB) Sub-Sin Pattana Community, Bang Khun Thien District, Bangkok in reduction of volumes of community waste. Problems and obstacles in implementing the project were also studied. Data were collected by recyclable waste (RW) analysis, questionnaire and in-depth interview with the members and committee of RWB project. Data sources were 10 waste samples taken from 10 households, 79 respondents of structured questionnaire, 12 respondents of in-depth interview (including 10 members and 2 committee staff of the project). The study found that people registered with the RWB project sorted their waste before …
An Efficiency Test On Wave Energy Reduction Of Piled Breakwaters Using Physical Model, Ar-Sawin Intasupa, Winai Ouypornprasert, Payom Ratanamanee, Tanawat Jarupongsakul, Pramot Sojisuporn
An Efficiency Test On Wave Energy Reduction Of Piled Breakwaters Using Physical Model, Ar-Sawin Intasupa, Winai Ouypornprasert, Payom Ratanamanee, Tanawat Jarupongsakul, Pramot Sojisuporn
Applied Environmental Research
The physical model at Hydraulic Engineering Laboratory Unit, Prince Songkhla University was used to test the efficiency of a triangular-concrete piled breakwater. Seven parameters; namely wave height, wave period, water depth, spacing between row, spacing between pile in the same row, angle of incident wave and orientation of pile's angle in the row were selected and each parameter was tested at 3 predefined values, namely low, medium and high values. The piled breakwater was composed of either one, two, three or four rows of piles. The best arrangement which could reduce the incident wave energy for up to 53 % …
Distribution Of Heavy Metals In Mangrove Sediment At The Tha Chin Estuary, Samut Sakhon Province, Thailand, Supaporn Buajan, Nathsuda Pumijumnong
Distribution Of Heavy Metals In Mangrove Sediment At The Tha Chin Estuary, Samut Sakhon Province, Thailand, Supaporn Buajan, Nathsuda Pumijumnong
Applied Environmental Research
The concentrations of selected heavy metals (Cd, Cu, Pb and Zn) at a depth of 0-30 cm sediments from 11 stations in a mangrove forest at Bang Ya Praeg, Tha Chin Estuary, Samut Sakhon Province, Thailand were examined. The ranges of heavy metals, in mg kg-1 dry weight (dw), were as follows: Cd (0.035 to 0.070), Cu (7.90 to 21.91), Pb (11.91 to 25.74) and Zn (55.99 to 75.05). The dry season (April 2009) had higher levels of heavy metals than the wet season (August 2009). Heavy metals in the study area had the following order of prevalence: Zn > Pb …
Inter-Phase Mass Transport: Modelling Of Air-Water Movement Of Organic Chemicals, Darryl Hawker, Benjalak Karnchanasest
Inter-Phase Mass Transport: Modelling Of Air-Water Movement Of Organic Chemicals, Darryl Hawker, Benjalak Karnchanasest
Applied Environmental Research
Air-water inter-phase mass transport of organic contaminants is often an important factor in their environmental fate and behaviour. The equilibrium situation is given by the Henry's Law Constant of the compound, but is rarely attained under environmental conditions. Approach to equilibrium is commonly described by the two-film theory involving molecular (Fickian) diffusion through thin stagnant films adjacent to the air-water interface. This theory is formulated in terms of mass transfer coefficients and fugacity transport parameters. Penetration and Surface Renewal Theories of mass transfer are also discussed. The importance of the Henry's Law Constant (H) is shown. Compounds such as phenol …
Durian Peel As Biosorbent For Removal Of Cadmium Ions From Aqueous Solution, Wanna Saikaew, Pairat Kaewsarn
Durian Peel As Biosorbent For Removal Of Cadmium Ions From Aqueous Solution, Wanna Saikaew, Pairat Kaewsarn
Applied Environmental Research
The ability of durian peel to remove Cd(II) ions from aqueous solution by biosorption was investigated. The sorption capacities at different solution pH, agitation speed, temperatures, initial cadmium ions concentrations and contact time were evaluated on a batch scale basis. At pH 5 and agitation speed 150 rpm, the cadmium ions removal reached at a maximum value. Increases in cadmium capacity with increasing temperature indicated endothermic nature of the biosorption process. The equilibrium was better described by the Langmuir isotherm model, with a maximum biosorption capacity of 18.55 mg g-1. The biosorption was relatively quick about 15 min to reach …
Trends In Temperature And Rainfall Extreme Changes In Bangkok Metropolitan Area, Sangchan Limjirakan, Atsamon Limsakul, Thavivongse Sriburi
Trends In Temperature And Rainfall Extreme Changes In Bangkok Metropolitan Area, Sangchan Limjirakan, Atsamon Limsakul, Thavivongse Sriburi
Applied Environmental Research
Trends in temperature and rainfall extremes in the Bangkok Metropolitan area were analyzed on the basis of 3 high-quality series of daily data. A set of core climate extreme indices recommended by the WMOCCL/ CLIVAR Expert Team on Climate Change Detection, Monitoring and Indices (ETCCDMI) that measures many aspects of a changing climate including changes in intensity, frequency and duration of temperature and rainfall events was computed. Analysis of these indices provided clear evidence that different aspects of temperature and rainfall extremes in the Bangkok Metropolis exhibited significant changes during 1965- 2006. The region has been clearly warming over the …
Observed Changes In Daily Rainfall Extreme Along Thailand's Coastal Zones, Atsamon Limsakul, Sangchan Limjirakan, Thavivongse Sriburi
Observed Changes In Daily Rainfall Extreme Along Thailand's Coastal Zones, Atsamon Limsakul, Sangchan Limjirakan, Thavivongse Sriburi
Applied Environmental Research
Trends in daily rainfall extreme along Thailand's coastal zones were examined, based on 28 high-quality series of daily rainfall data observed at the stations along the Andaman Sea Coast (ASC), the Gulf of Thailand's western coast (GoTw) and the Gulf of Thailand's eastern coast (GoTe). A set of core climate extreme indices recommended by the WMO-CCL/CLIVAR Expert Team on Climate Change Detection, Monitoring and Indices (ETCCDMI) that measures different aspects of rainfall extreme events such as wetness and dryness conditions, frequency and intensity rainfall events was calculated. Analysis of these indices revealed notable changes in rainfall extreme events along Thailand's …
Air Pollutant Emissions From The Burning Of Incense, Mosquito Coils, And Candles In A Small Experimental Chamber, Maneerat Ongwandee, Wilas Pipithakul
Air Pollutant Emissions From The Burning Of Incense, Mosquito Coils, And Candles In A Small Experimental Chamber, Maneerat Ongwandee, Wilas Pipithakul
Applied Environmental Research
Combustion of incense, candles, and mosquito coils produces a variety of air pollutants, which may cause adverse health effects. This study was to characterize emissions of particulate matter (PM2.5) and carbon monoxide (CO) from the burning process of three selected types of emitters: incense, candles, and mosquito coils. The experiments were conducted in an aluminum foil-lined wall chamber with a dimension of 1x1x1 m3. Emission rates and emission factors of the test emitters were obtained from fitting time-dependent concentrations of the measured pollutants to a single-compartment mass balance model. The emission rates and emission factors of incense combustion were: PM2.5 …
Suppression Of Pyrite Oxidation With Iron-Phosphate Coating: Technique For Prevention Of Acid Mine Drainage, Chantra Tongcumpou, Nipon Kongmak, Chakkaphan Sutthirat
Suppression Of Pyrite Oxidation With Iron-Phosphate Coating: Technique For Prevention Of Acid Mine Drainage, Chantra Tongcumpou, Nipon Kongmak, Chakkaphan Sutthirat
Applied Environmental Research
This study was aimed to evaluate the feasibility of an iron-phosphate coating on pyrite surfaces for inhibiting an oxidation that is expected to prevent acid mine drainage (AMD). Prior to the experiments, pyrite samples (av. 425-850 µm in size) were mixed with sand (av. 1-2 mm in size) with a ratio of 1:4. Coating process was conducted in batch experiments that were treating with various concentrations of coating solutions, i.e., hydrogen peroxide (H2O2), sodium acetate (NaAc) and potassium dihydrogen phosphate (KH2PO4) at different contact times. Subsequently, leaching test was performed in columns (10 mm in diameter) using 0.145 M of …