Browsing by Author "Eakalak Khan"

Adsorption mechanism of bone chars for defluoridation of groundwater

Benyapa Sawangjang (Chulalongkorn University, 2015)

The purpose of the research was to examine the adsorption fluoride onto pig bone char (PBC), chicken bone char (CKBC), and cow bone char (CBC) adsorbents. Bone char (BC) adsorbents were generated by charring process. The ...

Chromium contamination in marine ecosystem at Bangpoo, Muang district, Samutprakarn province

Sujaree Bureekul (Chulalongkorn University, 2005)

Seawater, sediment, and marine organisms were collected from Bangpoo, Muang district, Samutprakarn Province and analyzed for chromium concentrations. The results showed relatively high chromium concentrations in sediments ...

Chromium removal by phytoremediation and biosorption

Pantawat Sampanpanish (Chulalongkorn University, 2005)

The possibility of using phytoremediation and biosorption with weed plant species in Thailand to remove chromium (Cr) from soil and water was investigated. Six plant species, Cynodon dactylon, Pluchea indica, Phyllanthus ...

Co-effects of silver nanoparticles and microplastics on nitrifying microorganisms from wastewater treatment plants and their activities

Nampetch Charanaipayuk (Chulalongkorn University, 2022)

Silver nanoparticles (AgNPs) and microplastics are emerging water contaminants of the decade. They share a similar fate and transport in wastewater treatment plants as they tend to accumulate in sludge of aeration tanks. ...

Comparison of haloacetic acid removal between biological activated carbon and nanofiltration

Chalatip Ratasuk (Chulalongkorn University, 2004)

Haloacetic acids are disinfection by-products generated during the chlorination process in drinking water system. Some of them are suspected human carcinogens. The U.S. Environmental Protection Agency currently limits the ...

Degradation of (E)- and (Z)-Endoxifen: Kinetics, By-products Identification and Toxicity Assessment.

Marina Arino Martin (Chulalongkorn University, 2016)

Endoxifen is an effective metabolite of a commonly used chemotherapy agent, tamoxifen. Endoxifen has been detected in the final effluent of wastewater treatment plants. The release of endoxifen into the water environment ...

Effect of control parameters of biological wastewater treatment systems on biodegradable dissolved organic carbon in effluents

Pischa Wanaratna (Chulalongkorn University, 2002)

In the last few years, biodegradable dissolved organic carbon (BDOC) methods have been studied and used for characterizing the quality of secondary treated wastewater from activated sludge (AS) process. However, BDOC removal ...

Effect of nanoscale zero-valent iron (NZVI) on bacterial viability : roles of growth phases and oxidative stress

Krittanut Chaithawiwat (Chulalongkorn University, 2010)

The effect of nanosale zero-valent iron (nZVI) particles on bacteria from different growth phases was studied. Four acterial strans including Escherichia coli strains JM109 and BW25113, and Pseudomonas putida strains KT2440 ...

Free and immobilized cell bioaugmentation for removing atrazine from agricultural infiltrate

Sumana Siripattanakul (Chulalongkorn University, 2008)

The remediation of atrazine in agricultural infiltrate by bioaugmented free and phosphorylated-polyvinyl alcohol (PPVA) immobilized cells was studied. The effects of cell-to-matrix ratio, cell loading and infiltration rate ...

Glutaraldehyde removal from produced water using photolysis and photocatalysis

Soklida Hong (Chulalongkorn University, 2016)

Glutaraldehyde (GA) has been used extensively as a biocide in hydraulic fracturing fluids leading to the contamination of the compound in produced water. In this study, the performances of photolysis and photocatalysis for ...

INTERACTION BETWEEN NATURAL ORGANIC MATTER (NOM) FRACTIONS AND NANO-ZERO VALENT IRON (NZVI)

Katika Intarasuwan (Chulalongkorn University, 2014)

The presence of natural organic matter (NOM) in groundwater could play an important role on removal of contaminants by nano-zero valent iron (NZVI). NOM has heterogeneous structure and could be divided into 6 fractions ...

Mineralization and biodegradability enhancement of hazardous organic compounds using conventional and modified fenton's reagents

Nawarat Sermsai (Chulalongkorn University, 2005)

Enhancement on mineralization and biodegradability of hazardous organic compounds could be performed by conventional or modified Fenton's reaction. The degree of mineralization was measured by dissolved organic carbon (DOC) ...

Performance characterization of biological wastewater treatment systems using 5-day biodegradable dissolved organic carbon and ultraviolet absorbance at 254 nanometers

Kullapa Soratana (Chulalongkorn University, 2004)

Biodegradable dissolved organic carbon (BDOC) and ultraviolet absorbance at 254 nm (UV254) which have been widely used in the drinking water field were investigated for their applicabilities to be used as wastewater quality ...

Production of assimilable organic carbon through the use of fenton's reagent

Suksan Iemsophon (Chulalongkorn University, 2002)

Batch experiments were conducted to determine the effects of Fenton's reagent (H2O2/Fe2+) on the production of assimilable organic carbon (AOC) in water. The objectives were to study the effects of pH, H2O2 and Fe2+ doses, ...

Removal of haloacetonitriles (HANS) and dissolved organic nitrogen (DON) in water by vacuum ultraviolet (VUV)

Pradabduang Kiattisaksiri (Chulalongkorn University, 2016)

The main objective of this dissertation was to investigate the feasibility of using vacuum ultraviolet (VUV, 185+254 nm) and ultraviolet (UV, 254 nm) for removal of haloacetronitriles (HANs) and dissolved organic nitrogen ...

Removal of heavy metals from runoff using grass clippings compost: effect of moisture content and ph in composting process

Darin Ruangrote (Chulalongkorn University, 2004)

Heavy metals are significant contaminants in stormwater runoff. Dissolved heary metals can be removed from the stormwater runoff primarily by physical and chemical processes. A compost stormwater filter is one of the devices ...

Removal of oil and grease from synthetic gas station runoff using local sorbents from plant materials

Thunyalux Ratpakdi (Chulalongkorn University, 2002)

Gas station runoff is one of the major sources that contribute oil and grease to receiving waters. Inserts are the devices installed at the inlet of the stormwater catch basins to reduce pollutants including oil and grease. ...

Removal of polycyclic aromatic hydrocarbons from runoff by natural fibers

Paritta Rotwiroon (Chulalongkorn University, 2004)

Polycyclic aromatic hydrocarbons (PAHs) in runoff are of concern because they are generally toxic to aquatic organisms and many of them are carcinogenic to human. One of the alternatives for treating PAHs in runoff is to ...

ROLE AND MECHANISMS OF BACTERIAL BIOFILMS IN SILVER NANOPARTICLE RESISTANCE

Pumis Thuptimdang (Chulalongkorn University, 2014)

The use silver nanoparticles (AgNPs) may release AgNPs into wastewater and natural water systems where they can be harmful to biofilms. Therefore, it is important to understand the mechanisms of biofilm resistance to AgNPs. ...

Strategies for achieving partial nitrification by immobilized cells

Chaiwat Rongsayamanont (Chulalongkorn University, 2010)

Shortcut biological nitrogen removal (SBNR) is a cost effective innovative process to treat low carbon or/and high nitrogen wastewater. Partial nitrification (PN) is believed to be the rate-limiting step of the overall ...

Browsing by Author "Eakalak Khan"

Browsing by Author "Eakalak Khan"

Search DSpace

Browse

All of DSpace

My Account