Physico-chemical assessment of paper mill effluent and its heavy metal remediation using aquatic macrophytes-a case study at JK Paper mill, Rayagada, India

被引:31
作者
Mishra, Swayamprabha [1 ]
Mohanty, Monalisa [1 ,2 ]
Pradhan, Chinmay [3 ]
Patra, Hemanta Kumar [2 ]
Das, Ritarani [1 ]
Sahoo, Santilata [1 ]
机构
[1] Utkal Univ, Lab Plant Physiol & Biochem, Post Grad Dept Bot, Bhubaneswar 751004, Orissa, India
[2] Utkal Univ, Lab Environm Physiol & Plant Biochem, Post Grad Dept Bot, Bhubaneswar 751004, Orissa, India
[3] Utkal Univ, Lab Plant Biotechnol & Microbiol, Post Grad Dept Bot, Bhubaneswar 751004, Orissa, India
关键词
Heavy metals; Macrophytes; Remediation; Paper mill effluent; Physico-chemical parameters; WATER HYACINTH; LEMNA-MINOR; PULP; GROWTH; PHYTOREMEDIATION; ACCUMULATION; DUCKWEED; REMOVAL; PLANTS; SOIL;
D O I
10.1007/s10661-012-2873-9
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The present investigation aims to assess the phytoremediation potential of six aquatic macrophytes, viz. Eichhornia crassipes, Hydrilla verticillata, Jussiaea repens, Lemna minor, Pistia stratiotes and Trapa natans grown in paper mill effluent of JK Paper mill of Rayagada, Orissa, for remediation of heavy metals. The experiment was designed in pot culture experiments. Assessment of physico-chemical parameters of paper mill effluent showed significant decrease in pH, conductivity, total dissolved solids, total suspended solids, chlorine, sulphur, biological and chemical oxygen demand after growth of macrophytes for 20 days. Phytoremediation ability of these aquatic macrophytic species for copper (Cu) and mercury (Hg) was indicated by assessing the decrease in the levels of heavy metals from effluent water. Maximum reduction (66.5 %) in Hg content of untreated paper mill effluent was observed using L. minor followed by T. natans (64.8 %). L. minor showed highest reduction (71.4 %) of Cu content from effluent water followed by E. crassipes (63.6 %). Phytoextraction potential of L. minor was remarkable for Hg and Cu, and bioaccumulation was evident from bioconcentration factor values, i.e. 0.59 and 0.70, respectively. The present phytoremediation approach was considered more effective than conventional chemical treatment method for removing toxic contaminants from paper mill effluent.
引用
收藏
页码:4347 / 4359
页数:13
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