Search Result of "Suneerat Ruangsomboon"

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Lead (Pb2+) Removal from Wastewater by the Cyanobacterium Calothrix marchica)

ผู้เขียน:ImgSuneerat Ruangsomboon, ImgAmnat Chidthaisong, ImgBoosya Bunnag, ImgDuangrat Inthorn, ImgNarumon W. Harvey

สื่อสิ่งพิมพ์:pdf

Abstract

Pb2+ removal ability of the living-freshwater cyanobacterium C. marchica was studied in batch experiments. The result showed that adsorption of Pb2+ by C. marchica reached equilibrium within 60 min. The amount of Pb2+ adsorbed (qeq) increased when cyanobacterial age increased. At lower biomass concentration cyanobacterium showed higher qeq than that at high biomass concentration. Elevated temperature increased Pb2+ adsorbed by C. marchica. The Langmuir adsorption isotherm fitted the results better than the Freundlich isotherm and, thus, was more suitable to describe Pb2+ adsorption by C. marchica. C. marchica had Pb2+ binding capacity (qmax) of 74.04 mg g-1, and indicators of adsorption capacity (Kf) of 18.01. Pb2+ removal under light and dark conditions was not significantly different.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 040, Issue 3, Jul 06 - Sep 06, Page 784 - 794 |  PDF |  Page 

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ที่มา:KASETSART UNIVERSITY FISHERIES RESEARCH BULLETIN

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Freshwater Phytoplankton in Thailand I: Euglenophyceae)

ผู้เขียน:Imgนางลัดดา วงศ์รัตน์, ศาสตราจารย์, Imgนายประจิตร วงศ์รัตน์, อาจารย์, ImgSuneerat Ruangsomboon

สื่อสิ่งพิมพ์:pdf

Abstract

This article is a part of a series of diversity study on freshwater phytoplankton of Thailand. The study based upon examinations of 248 plankton samples collected from various types of water bodies in the central and eastern parts of the country, during 1998 and 2003. A list of one hundred and six species, thirty-three varieties, and two forms of euglenoids is provided. Many of the taxa encountered are well known cosmopolitan forms. A further illustrated and brief taxonomic description of the first record taxa is also given. This includes fifty species, twenty-one varieties, and two forms. This study provides baseline data for future diversity and ecological studies of freshwater phytoplankton in Thailand.

Article Info
KASETSART UNIVERSITY FISHERIES RESEARCH BULLETIN, Volume 27, Issue 1, Dec 04 - Dec 99, Page 1 - 34 |  PDF |  Page