ORIGINAL RESEARCH
Interference Adsorption of Cadmium with a Variety of Pollutants in Sediments Based on Fractional Factorial Design (Resolution V)
Wenwen Gu1,2, Bingchuan Cheng1,2, Yu Li1,2
 
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1Resource and Environment Academy, North China Electric Power University,
Beijing 102206, China
2The State Key Laboratory of Regional Optimization of Energy Systems, North China Electric Power University,
Beijing 102206, China
Online publish date: 2017-01-31
Publish date: 2017-01-31
Submission date: 2015-11-25
Final revision date: 2016-03-10
Acceptance date: 2016-08-16
 
Pol. J. Environ. Stud. 2017;26(1):47–58
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ABSTRACT:
The characteristics of composite cadmium contamination via adsorption onto the surficial sediments in a pesticide (dimethoate, metalaxyl, atrazine, malathion, and prometryn)/heavy metal (copper, zinc, lead, cadmium, and nickel) composite contamination system were examined. To do this, a confounding designassisted resolution V of 210-3 fractional factorial design method composed of a fixed effects model, a multiple linear regression model, and the best subset regression modeling methods was used to identify the main effects and second-order interaction effects of the aforementioned pollutants. Overall, 87.08% of the total contribution to cadmium adsorption derived from the main effect, and the main effects of copper, lead, zinc, and dimethoate had a significant antagonistic effect on cadmium adsorption on the sediments in the order of: copper (17.41%)>lead (13.09%)>zinc (10.06%)>dimethoate (5.03%), while the main effects of cadmium (41.49%) had a significant synergistic effect. Moreover, 12.92% of the total contribution to cadmium adsorption was attributed to second-order interaction effects (zinc*nickel and copper*zinc), with zinc*nickel (4.57%) having a significant antagonistic effect and copper*zinc (8.35%) having a significant synergistic effect on cadmium adsorption on the sediments. When compared with resolution IV of the 210-5 fractional factorial design method, the freedom of resolution V of the 210-3 fractional factorial design method increased from 21 to 45. This showed that resolution V of the 210-3 fractional factorial design method can significantly distinguish the aliases of the second-order interaction effects related to the objective pollutant cadmium. Also, the total contribution to cadmium adsorption of the second-order interaction effects decreased from 61.48% to 12.92%, indicating that resolution IV of the 210-5 fractional factorial design method overestimates the second-order interaction effect on cadmium adsorption on sediments.
eISSN:2083-5906
ISSN:1230-1485