Effects of Fe/As and pH on arsenic removal by Fe(II)/O2 process

Name: ปรีดา จิตขาว

Name: Preeda Jitkaw

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Abstract: In batch studies, arsenic synthetic wastewater were experimentally treated by Fe(II)IO2 process at various pHs, contact times, iron and arsenic concentration and Fe/As ratios of 50/1 -2.5/ 1 ,10011-511 and 200/1- 10/1 in order to investigate arsenic removal efficiency. From the experiments, the results revealed that As removal is ineffective at pH solutions of 2 and 12 and the best contact time is 60 minutes. The highest As and Fe removal simultaneously was initial Fe/As ratios of 10/1 which initial pH 8 was outstandingly significant and initial iron concentrations of 5.0 ppm. In column studies, two media are used as single, media including sand and activated carbon, which were studied at initial As and Fe concentrations of 500 ppb and 5.0 ppm, filtration rate of 0.1, 0.2 and 1.0 m/h and at a bed depth of 10, 20 and 30 cm. The results presented that the highest Arsenic removal in terms of treated volume was at a 0.1 mlh-flow rate on AC media. This result can be explained by As-Fe floc being filtrated and adsorbed by AC.

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Address: กรุงเทพมหานคร (Bangkok)

Email: info.lib@mail.kmutt.ac.th

Name: Khajornsak Sopajaree

Role: Supervisor

Created: 2545

Issued: 2006-12-29

Modified: 2014-02-19

วิทยานิพนธ์/Thesis

CallNumber: JGSEE48

eng

DegreeName: Master of Engineering

Level: Master's Degree

Descipline: Environmental Technology

Grantor: King Mongkut's University of Technology Thonburi

©copyrights King Mongkut's University of Technology Thonburi

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