title: Bioremediation of heavy metal contaminated aqueous solution by using red algae Porphyra leucosticta.
abstract: Bioremediation is an effective process for the removal and recovery of heavy metal ions from aqueous solutions. In this study, red algae Porphyra leucosticta was examined to remove Cd(II) and Pb(II) ions from wastewater through biological enrichment and biological precipitation. The experimental parameters that affect the bioremediation process such as pH, contact time and biomass dosage were studied. The maximum bioremediation capacity of metal ions was 31.45 mg/g for Cd(II) and 36.63 mg/g for Pb(II) at biomass dosage 15 g/L, pH 8.0 and contact time 120 minutes containing initial 10.0 mg/L of Cd(II) and 10.0 mg/L of Pb(II) solution. Red algae Porphyra leucosticta biomass was efficient at removing metal ions of 10.0 mg/L of Cd(II) and 10.0 mg/L of Pb(II) solution with bioremediation efficiency of 70% for Cd(II) and 90% for Pb(II) in optimal conditions. At the same time, the removal capacity for real industrial effluent was gained at 75% for 7.6 mg/L Cd(II) and 95% for 8.9 mg/L Pb(II). In conclusion, it is demonstrated that red algae Porphyra leucosticta is a promising, efficient, cheap and biodegradable sorbent biomaterial for reducing heavy metal pollution in the environment and wastewater.
authors.affiliation: School of Civil Engineering and Architecture, Hubei University of Technology, Wuhan 430068, China E-mail: yjjyc@126.com.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Ye
authors.affiliation: School of Civil Engineering and Architecture, Hubei University of Technology, Wuhan 430068, China E-mail: yjjyc@126.com.
authors.forename: Henglin
authors.initials: H
authors.lastname: Xiao
authors.affiliation: School of Civil Engineering and Architecture, Hubei University of Technology, Wuhan 430068, China E-mail: yjjyc@126.com.
authors.forename: Benlin
authors.initials: B
authors.lastname: Xiao
authors.affiliation: School of Civil Engineering and Architecture, Hubei University of Technology, Wuhan 430068, China E-mail: yjjyc@126.com.
authors.forename: Weisheng
authors.initials: W
authors.lastname: Xu
authors.affiliation: School of Resources and Environmental Engineering, Hubei University of Technology, Wuhan 430068, China.
authors.forename: Linxia
authors.initials: L
authors.lastname: Gao
authors.affiliation: School of Chemical Engineering and Food Science, Hubei University of Arts and Science, Xiangyang 441053, China.
authors.forename: Gan
authors.initials: G
authors.lastname: Lin
mesh_terms: D001673:Biodegradation, Environmental; D018533:Biomass; D002104:Cadmium / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007477:Ions; D007700:Kinetics; D007854:Lead / Q000378:metabolism*; D008670:Metals; D019216:Metals, Heavy; D044664:Porphyra / Q000378:metabolism*; D000461:Rhodophyta; D012996:Solutions; D062065:Wastewater; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D002104:Cadmium; D007477:Ions; D007854:Lead; D008670:Metals; D019216:Metals, Heavy; D012996:Solutions; D062065:Wastewater; D014874:Water Pollutants, Chemical