Hydrogen gas production from the electrochemical precipitation process for treating textile wastewater | |
| Author | Huynh Minh Khai |
| Call Number | AIT Thesis no.EV-08-48 |
| Subject(s) | Textile industry--Waste disposal Hydrogen--Analysis |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Environmental Engineering and Management |
| Publisher | Asian Institute of Technology |
| Abstract | The discharge of waste water from textile industry has become threatening to the water environment. Among the conventional treatment, electrochemical treatment is one of promising treatment performance in removal of color from textile wastewater. The research has been operated as batch in a 1.8 L lab-scale reactor with two kind of wastewater. Synthetic wastewater was prepared in laboratory experiment and actual wastewater was obtained from textile trade village of Prasamut-jadee area, Samutprakarn province. These wastewater types have different characteristics and operated at different condition of electric potential from 8 to 30 voltages (2 intervals), operation time of 10, 20 and 30 minutes and also at different pH value 7.6 and 8.7. The first experiments, the main purpose is to determine COD and color removal efficiency. pH value applied in these runs are 7.6 for synthesis waste water and around 8.73 for raw wastewater. Treated wastewater is settled down for 15 minutes before sample taken. Analyzing parameters are conditions for the next experiment. Color removal efficiency is about 94 % to 98 %, and COD is about 85 % to 96 %. The removal of TDS is about 12 % to 14 %. The average gas volume generated is about 96.5 to 108.6 mL per L wastewater treated. Hydrogen gas composition from each type of wastewater is similar about 9.96 % to 10.04 %. The second experiment of this research is related to two previous experiments. The suitable conditions were applies in this experiment. In the three HRT above, the maximum gas volume was found at 30 minutes and average percentage of it is about 10.4 % at pH 8.6 and TSS 4,200 mg/L; and 9.96% found at pH 7.6 and TSS 3,750 mg/L. Through the experiment, some factors that affect to ECP process such as electrical potential, duration of operation were found but they do not have much influent to gas generation. Two factors that have more effect to gas generation are electrical intensity and operating time. |
| Year | 2008 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Thammarat Koottatep; |
| Examination Committee(s) | Visvanathan, C.;Anawat Pinisakul; |
| Scholarship Donor(s) | Cantho Scholarship Program, Vietnam; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2008 |