eprintid: 2170
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/21/70
datestamp: 2023-11-09 15:50:22
lastmod: 2023-11-09 15:50:22
status_changed: 2023-11-09 15:42:10
type: article
metadata_visibility: show
creators_name: Hussain, S.
creators_name: Aziz, H.A.
creators_name: Isa, M.H.
creators_name: Ahmad, A.
creators_name: Van Leeuwen, J.
creators_name: Zou, L.
creators_name: Beecham, S.
creators_name: Umar, M.
title: Orthophosphate removal from domestic wastewater using limestone and granular activated carbon
ispublished: pub
keywords: Adsorbent dosage; Adsorption behavior; Adsorption isotherm model; Alkaline pH; Column experiments; Column study; Domestic wastewater; Environmental problems; Freundlich; Good correlations; Granular activated carbons; Initial concentration; Langmuir isotherm; Optimum conditions; Orthophosphate; Pseudo second order kinetics; Receiving waters; Saturation time, Activated carbon; Adsorbents; Adsorption isotherms; Alkalinity; Concentration (process); Dyes; Eutrophication; Experiments; Granular materials; Limestone; pH effects; Wastewater, Adsorption, activated carbon; adsorption; eutrophication; kinetics; limestone; pH; wastewater
note: cited By 87
abstract: The discharge of excessive concentration of orthophosphate (PO4-P) ions into the receiving water causes environmental problems such as "eutrophication." The aim of the present study was to investigate the adsorption behavior of limestone (LS), granular activated carbon (GAC) and the mixture of both adsorbents for orthophosphate removal from domestic wastewater. The range of initial concentration of PO4-P throughout the study was between 9 and 25mg/L. Effects of contact/settling times, pH, adsorbent dosage, initial concentration, adsorption isotherm models and kinetics were studied in batch-scale experiments while for the column experiments, the effects of flow rate, pH and initial concentration were studied. Limestone alone was shown to be an effective adsorbent which has potential to remove over 90 orthophosphate at optimum conditions. The lower initial concentration (2.5mg PO4-P/L) yielded the maximum removal (94) compared to the higher concentration (80 removal at 100mg PO4-P/L). Freundlich and Langmuir isotherms provided good correlation coefficient for PO4-P and the data agreed with the pseudo-second-order kinetics model (R2>0.95). In the up-flow column study, higher flow rate, alkaline pH and higher initial concentration yielded shorter column saturation time. © 2011 Elsevier B.V.
date: 2011
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952241404&doi=10.1016%2fj.desal.2010.12.046&partnerID=40&md5=748730cd0de41ea02ad695488295c5c3
id_number: 10.1016/j.desal.2010.12.046
full_text_status: none
publication: Desalination
volume: 271
number: 1-3
pagerange: 265-272
refereed: TRUE
issn: 00119164
citation:   Hussain, S. and Aziz, H.A. and Isa, M.H. and Ahmad, A. and Van Leeuwen, J. and Zou, L. and Beecham, S. and Umar, M.  (2011) Orthophosphate removal from domestic wastewater using limestone and granular activated carbon.  Desalination, 271 (1-3).  pp. 265-272.  ISSN 00119164