Denitrification of water using a low-cost adsorbent
Open Access
- 1 February 2021
- journal article
- research article
- Published by IOP Publishing in IOP Conference Series: Materials Science and Engineering
- Vol. 1058 (1), 012021
- https://doi.org/10.1088/1757-899x/1058/1/012021
Abstract
The recent studies about water quality indicated a clear increase in the concentrations of many pollutants in the sources of freshwaters, such as nitrate, phosphate, and inorganic pollutants. This increase is attributed to the expansion of the global population, industries, and climate changes. These studies represented a call for the need for efficient treatment for water and wastewater. The current study investigates the possibility of using activated red mud (ARM) as an adsorbent to eliminate nitrates from water/wastewater. The operational parameters such as treatment times, pH, and doses of ARM were tested to assess their effects on the Nitrate removability by ARM. The optimum treatment times, pH, and dose for best removal within this study were 60 min, 7, and 75 g/L for treatment times, pH, and doses, respectively. Freundlich and Langmuir isotherm models and kinetic models including the pseudo-first-order, the pseudo-second-order, and interparticle diffusion using non-linear regressions were utilized to analyze the observed data which were gained from batch equilibrium tests. The obtained results revealed that the equilibrium data have good and reasonable fitness and agreement with the Langmuir isotherm models. The highest adsorption capacity of ARM was 1.79423925mg/g. The maximum percentage of removal was found to be about 71% at ambient temperature.This publication has 35 references indexed in Scilit:
- Simultaneous removal of phenol and linear alkylbenzene sulfonate from automotive service station wastewater: Optimization of coupled electrochemical and physical processesSeparation Science and Technology, 2019
- Effect of initial pH value on the removal of reactive black dye from water by electrocoagulation (EC) methodJournal of Physics: Conference Series, 2019
- Assessment of heavy metal pollution in the Great Al-Mussaib irrigation channelDesalination and Water Treatment, 2019
- Statistical modelling of turbidity removal applied to non-toxic natural coagulants in water treatment: a case studyDesalination and Water Treatment, 2019
- An Investigation Into The Level Of Heavy Metals Leaching From Canal-Dreged Sediment: A Case Study Metals Leaching From Dreged SedimentIOP Conference Series: Materials Science and Engineering, 2018
- Electrocoagulation as a green technology for phosphate removal from river waterSeparation and Purification Technology, 2018
- Improving sludge settleability by introducing an innovative, two-stage settling sequencing batch reactorJournal of Water Process Engineering, 2017
- Defluoridation of drinking water using a new flow column-electrocoagulation reactor (FCER) - Experimental, statistical, and economic approachJournal of Environmental Management, 2017
- Iron removal, energy consumption and operating cost of electrocoagulation of drinking water using a new flow column reactorJournal of Environmental Management, 2017
- Treatment of Residential Complexes’ Wastewater using Environmentally Friendly TechnologyProcedia Engineering, 2017