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Full-Text Articles in Engineering
Forecasting Cane Sugar Production Under Climate Change And Human-Ecotoxicological Impact, Arisara Tachabunya
Forecasting Cane Sugar Production Under Climate Change And Human-Ecotoxicological Impact, Arisara Tachabunya
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study forecasted sugar cane yield and cane sugar production using stepwise multiple linear regression (MLR) and autoregressive integrated moving average (ARIMA). Then, impacts on human health and ecosystems at the endpoint level were evaluated using openLCA software version 1.10.3 and the ReCiPe 2016 method. The functional units were the production of 1 kg raw sugar, 1 kg granulated sugar, and 1 kg refined sugar at Tamaka Sugar Industry Co., Ltd., Kanchanaburi province, Thailand. The result revealed that relative humidity at the Thong Pha Phum meteorological station, maximum temperature at the Kanchanaburi meteorological station, and oceanic Niño Index (ONI) were …
Influence Of Tidal Current On Microplastic Dynamics In Chao Phraya River Estuarine Ecosystem, Jiradet Tang-Siri
Influence Of Tidal Current On Microplastic Dynamics In Chao Phraya River Estuarine Ecosystem, Jiradet Tang-Siri
Chulalongkorn University Theses and Dissertations (Chula ETD)
Microplastics (MPs) can be found almost everywhere in marine ecosystems. That is one of the issues of concern around the world, including in Thailand. Estuary ecosystems are also among the most disturbed. By the estuary ecosystem affected by both rivers and oceans, such as the mouth of the Chao Phraya River in Thailand. Due to the change in tide, it is necessary to study the effects of tidal currents on the depth of MPs. Water samples were collected at approximately 60 water levels in 24 hours. Samples and three water quality indicators were collected at Pak Nam Chao Phraya. The …
Wastewater-Based Epidemiology And Quantitative Microbial Risk Assessment Associated With Wastewater Contact Of Norovirus In Bangkok, Thailand, Nonnarit Sriporatana
Wastewater-Based Epidemiology And Quantitative Microbial Risk Assessment Associated With Wastewater Contact Of Norovirus In Bangkok, Thailand, Nonnarit Sriporatana
Chulalongkorn University Theses and Dissertations (Chula ETD)
Norovirus is one of the leading causes of acute gastroenteritis worldwide. Wastewater surveillance offer significant benefits such as enhancing our understanding of the disease occurrence in the population, evaluating the effectiveness of pathogen reduction in the treatment process, and tracking the spread of pathogens in the environment which pose a health risk to humans. Hence, wastewater surveillance is crucial. In this study, the influent and effluent samples were collected bi-monthly from March 2020 to March 2021 from three distinct wastewater treatment plants in Bangkok. Wastewater samples were concentrated and subjected to quantitative polymerase chain reaction (qPCR) to assess norovirus concentrations. …
Assessments Of Chromium Pollution In Surface Sediment Of The Inner Gulf Of Thailand, Patcha Leelakun
Assessments Of Chromium Pollution In Surface Sediment Of The Inner Gulf Of Thailand, Patcha Leelakun
Chulalongkorn University Theses and Dissertations (Chula ETD)
The inner Gulf of Thailand is an important marine resource for economic and social developments of Thailand. Moreover, the inner Gulf of Thailand is a diverse of biological coastal ecosystem, which is make an equilibrium marine environment. On the other hand, this area is due mainly to a variety of pollutant sources from the surface runoff, particularly major large rivers including the Mae Klong, the Tha Chin, the Chao Phraya and the Bangpakong Rivers. As a result, chromium contamination can occur in the inner Gulf of Thailand and ultimately become a serious environmental issue in Thailand. Therefore, the surface sediments …
Evaluation Of Cadmium Bioaccumulations In Pak Choi Grown By Hydroponics System, Piyachet Jinsart
Evaluation Of Cadmium Bioaccumulations In Pak Choi Grown By Hydroponics System, Piyachet Jinsart
Chulalongkorn University Theses and Dissertations (Chula ETD)
Cadmium is one of the most harmful heavy metals reported to contaminate the food chain and pose a high risk for health, including non-carcinogenic and carcinogenic effects. High levels of cadmium contamination due to industrial effluent discharge have been reported to affect plant growth and productivity, which could be used as a bio-indicator for cadmium bioaccumulation in plants. The utilization of cadmium-contaminated water for vegetable production has been known to increase the health risk for human consumption. Moreover, pH level was known as a factor affecting cadmium solubility and cadmium uptake by plants. However, there is still unknown about critical …
Influence Of Seasonal Variations On Contamination Level And Ecological Risk Of Heavy Metals In The Surface Sediments Of The Inner Gulf Of Thailand, Phuttiphat Lapat-Atiwat
Influence Of Seasonal Variations On Contamination Level And Ecological Risk Of Heavy Metals In The Surface Sediments Of The Inner Gulf Of Thailand, Phuttiphat Lapat-Atiwat
Chulalongkorn University Theses and Dissertations (Chula ETD)
The Inner Gulf of Thailand is a marine resource that provides ecological and economic value. Meanwhile, its can be acted like pollutions sink, especially heavy metals. After that, the extensions of industrialization, agriculturalization, and urbanization can degenerate to the inner Gulf environment quality. Therefore, this thesis was aimed to study the spatial distribution and seasonal variation of heavy metal concentration (Cd, Pb, Cu, Co, Ni, Mn and Zn) in surface sediment including the Mae Klong, the Tha Chin, the Chao Phraya and the Bangpakong River estuaries. Moreover, the contamination status and ecological risk were also evaluated. The results shown the …
Ecological Risk Assessment Of Microplastics And Heavy Metals In Central Industrial Wastewater Treatment Plant, Thamonwan Phuprasert
Ecological Risk Assessment Of Microplastics And Heavy Metals In Central Industrial Wastewater Treatment Plant, Thamonwan Phuprasert
Chulalongkorn University Theses and Dissertations (Chula ETD)
Microplastics become a big concern in environment. Their small particle size can absorb a variety of pollutants from the nearby environment when discharged into the environment, especially heavy metals. Central industrial wastewater treatment plant (WWTP) is an important source of microplastics in the environment. In this study, wastewater and sludge were collected from two industrial estates in Thailand. Wastewater was collected from 4 points i.e., influent, post grit chamber, post aeration tank, and post sedimentation tank while sludge was collected from sludge storage. Concentration of microplastics, heavy metals and heavy metals on microplastics were examined to evaluate ecological risk assessment. …
Health Risk Assessment For Heavy Metals In Chao Phraya River Basin, Natthanicha Nateekhuncharoen
Health Risk Assessment For Heavy Metals In Chao Phraya River Basin, Natthanicha Nateekhuncharoen
Chulalongkorn University Theses and Dissertations (Chula ETD)
Heavy metal contamination has become a serious concern due to its toxicity not only on ecosystems but also directly on human health. The Chao Phraya River Basin is the main area important for commerce, industries, and residence in Thailand. This study aimed to evaluate the impact on human health due to heavy metal contamination and identify the relationship between land use and heavy metal contamination in the Chao Phraya River. Pearson correlation was applied to analyze the relationship between heavy metal concentration and water parameters. The results indicated that during 2009-2013, Fe concentration positively correlated to turbidity (0.640), total phosphate …
Investigation Of Copper And Zinc Contaminations In Bioponic Systems Using Chicken Manure Fertilizer, Satja Aksorn
Investigation Of Copper And Zinc Contaminations In Bioponic Systems Using Chicken Manure Fertilizer, Satja Aksorn
Chulalongkorn University Theses and Dissertations (Chula ETD)
The bioponic system is a system that utilizes biological waste as a nutrient-rich source such as chicken manure fertilizer for plant growth integrated with aquaponic. At present, chicken manure fertilizer is contaminated with Cu and Zn may have the potential health effects through vegetable consumption. The objective of this study was to evaluate nitrogen transformation, nitrogen recovery, and plant growth in chicken manure-based bioponics at Cu (50–150 mg/kg) and Zn (200–600 mg/kg) supplementation and investigate the effects of Cu and Zn supplementations on plant bioaccumulation, root microbial community, and dietary health risk. Cu and Zn concentrations were analyzed using inductively …
A Development Of Disaster Risk Profile In Public Healthcare System During Flood Situation : A Case Study Of Nakhon Sawan City Municipality, Nakhon Sawan Province, Thailand, Kodchakorn Krutphong
A Development Of Disaster Risk Profile In Public Healthcare System During Flood Situation : A Case Study Of Nakhon Sawan City Municipality, Nakhon Sawan Province, Thailand, Kodchakorn Krutphong
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research begins with the idea of the disaster risk assessment included in the disaster management’s well recognized international framework, the Sendai Framework for Disaster Risk Reduction. Then, the idea settles from the risk assessment concept combined with the emergency management knowledge that has the critical infrastructure topic, including the public healthcare system. The flood disaster is the kind of disaster that frequently occurs in Thailand and the study area, Nakhon Sawan City Municipality. Thus, this research aims to study disaster risk profiles in the public healthcare system in a specific local area. The outcome from this research is the …
การประเมินความเสี่ยงทางสุขภาพของพนักงานที่สัมผัสฝุ่นและโลหะหนักในโรงงานกำจัดกากอุตสาหกรรม, ประหยัด เคนโยธา
การประเมินความเสี่ยงทางสุขภาพของพนักงานที่สัมผัสฝุ่นและโลหะหนักในโรงงานกำจัดกากอุตสาหกรรม, ประหยัด เคนโยธา
Chulalongkorn University Theses and Dissertations (Chula ETD)
พนักงานในโรงงานกำจัดกากอุตสาหกรรมทั้งสองแห่งได้รับสัมผัสมลภาวะต่างๆ เช่น ฝุ่นละออง (PM; PM2.5 และ PM10-2.5) และโลหะหนักที่ปนเปื้อนในกระบวนการกำจัดขยะ การวิจัยนี้เพื่อศึกษาความเสี่ยงทางสุขภาพของพนักงานที่สัมผัสฝุ่นและโลหะหนักในสถานที่ทำงาน พบฝุ่นขนาด PM2.5 มีความเข้มข้นในตัวอย่างที่เก็บแบบพื้นที่ (30.33±2.51 และ 41.21±1.12 µg/m3) เก็บแบบบุคคล (45.86±9.85 และ 144.99±119.11 µg/m3) และฝุ่นขนาด PM10-2.5 ในตัวอย่างที่เก็บแบบพื้นที่ (14.77±0.29 และ 15.09±0.35 µg/m3) เก็บแบบบุคคล (27.73±8.63 และ 48.04±43.49 µg/m3) ในโรงงาน 1 และ 2 ตามลำดับ ความเข้มข้นของโละหนัก As, Cd, และ Pb ในตัวอย่างฝุ่นโรงงาน 1 ที่เก็บตัวอย่างแบบพื้นที่มีค่า 1.19±0.09, 0.55±0.05 และ 0.78±0.14 µg/m3, เก็บแบบบุคคลมีค่า 1.22±0.08, 0.55±0.08, และ 0.87±0.12 µg/m3 ตามลำดับ ในโรงงาน 2 ที่เก็บตัวอย่างแบบพื้นที่มีค่า 0.52±0.21, 0.55±0.05 และ 0.38±0.05 µg/m3 เก็บแบบบุคคลมีค่า 0.58±0.13, 0.53±0.06 และ 0.41±0.05 µg/m3 ตามลำดับ โดยระดับโลหะหนัก As Cd และ Pb ในฝุ่นมีค่าอยู่ในขีดจำกัดของกฎหมายด้านอาชีวอนามัยกำหนด และในตัวอย่างฝุ่นไม่พบโลหะหนัก Cr และ Hg และค่าเฉลี่ยของโลหะหนัก As-total Cr Cd Pb และ Hg ในปัสสาวะพบว่า As-total (91.67±98.63 และ 59.29±32.03 µg/L) Cr (0.82±0.51 และ 1.03±1.02 …
Health Risk Assessment Of Particulate Matter Associated With Polychlorinated Biphenyls And Polycyclic Aromatic Hydrocarbons In Bangkok And Chiang Mai, Thailand, Nareerat Punvitayakul
Health Risk Assessment Of Particulate Matter Associated With Polychlorinated Biphenyls And Polycyclic Aromatic Hydrocarbons In Bangkok And Chiang Mai, Thailand, Nareerat Punvitayakul
Chulalongkorn University Theses and Dissertations (Chula ETD)
Atmospheric pollutants have become a severe problem in creating health issues in Thailand. Due to the increase in fine particles in the air environment, the city population is facing acute respiratory problems. For understanding the concentration of polycyclic aromatic hydrocarbon (PAHs) and Polychlorinated biphenyls (PCBs), 24 samplings were done in Chiangmai and Bangkok of Thailand using Polyurethane (PUF) disk passive samplers. There were five sampling sites in Bangkok, and three in Chiang Mai. Data were collected in the dry season from December 2018- June 2019. A total of 24 samples were extracted and further quantitatively analyzed by the standard method …
การประเมินความเสี่ยงต่อสุขภาพจากการรับสัมผัส Pm10 Pm2.5 และสารประกอบอินทรีย์ระเหยง่ายในโรงพิมพ์, นพรัตน์ พงศ์บุญคุ้มลาภ
การประเมินความเสี่ยงต่อสุขภาพจากการรับสัมผัส Pm10 Pm2.5 และสารประกอบอินทรีย์ระเหยง่ายในโรงพิมพ์, นพรัตน์ พงศ์บุญคุ้มลาภ
Chulalongkorn University Theses and Dissertations (Chula ETD)
ความสัมพันธ์ระหว่างกระบวนการพิมพ์และการได้รับสัมผัสมลพิษอากาศของผู้ปฏิบัติงานได้มีการติดตามตรวจสอบในช่วงระยะเวลา 5 วันทำงานติดต่อกัน เป็นระยะเวลา 8 ชั่วโมงต่อวัน โดยได้ทำการตรวจวัดปริมาณความเข้มข้นในการได้รับสัมผัส TVOC และ PM2.5 ในกระบวนการพิมพ์จากโรงพิมพ์อาสาสมัครในประเทศไทยจำนวน 5 แห่ง ในการศึกษาครั้งนี้ ได้ทำการเปรียบเทียบระหว่างระบบการพิมพ์ออฟเซตและระบบการพิมพ์ดิจิตอล พบว่าค่าเฉลี่ย 8 ชั่วโมงของ PM2.5 ในจุดอ้างอิง, จุดออฟเซต A, จุดออฟเซต B, จุดออฟเซต C, จุดดิจิตอล D, และจุดออฟเซต E มีค่าเท่ากับ 7.46 ± 0.89, 21.51 ± 1.74, 44.26 ± 11.11, 77.92 ± 11.85, 42.08 ± 7.81 และ 28.21 ± 8.80 มคก/ลบม. ตามลำดับ ค่าเฉลี่ยของ PM2.5 ในจุดออฟเซต C มีค่าสูงสุดเท่ากับ 77.92 มคก/ลบม. เกิดจากมีปริมาณฝุ่นกระดาษเป็นจำนวนมากในบริเวณที่ตรวจวัด ค่าเฉลี่ย 8 ชั่วโมงของ TVOC ในจุดอ้างอิง, จุดออฟเซต A, จุดออฟเซต B, จุดออฟเซต C, จุดดิจิตอล D, และจุดออฟเซต E มีค่าเท่ากับ 0.12 ± 0.04, 2.68 ± 0.89, 5.02 ± 3.02, 21.86 ± 6.82 0.68 ± 0.08, และ 0.52 ± 0.19 ส่วนในล้านส่วน ค่าเฉลี่ยของ TVOC ในจุดออฟเซต C …
Microplastics In Industrial Wastewater Treatment Plant: Quantification, Identification And Ecological Risk Assessment, Sujarat Saiwaree
Microplastics In Industrial Wastewater Treatment Plant: Quantification, Identification And Ecological Risk Assessment, Sujarat Saiwaree
Chulalongkorn University Theses and Dissertations (Chula ETD)
Wastewater treatment plants (WWTPs) are one of the significant pathways of microplastics (MPs) entering the environment. Thus, information regarding this issue is still requisite in Thailand. In this study, wastewater and sludge samples were collected from various treatment units of industrial WWTP in dry season (February 2020) and wet season (July 2020). The MP particles were identified by size, shape, and polymer types. From the wastewater, MPs were detected in the highest amounts after the aeration unit (134.35 ± 20.79 particles/L) in dry season sample. In addition, sludge contained relatively low MPs. The size fraction in wastewater varied, but in …