Successful remediation of soils with mixed contamination of chromium and lindane: Integration of biological and physico-chemical strategies

被引：30

作者：

Daniel Aparicio, Juan ^{[1
,2
]}

Lacalle, Rafael G. ^{[3
]}

Artetxe, Unai ^{[3
]}

Urionabarrenetxea, Erik ^{[4
,5
]}

Maria Becerril, Jose ^{[3
]}

Polti, Marta Alejandra ^{[1
,6
,7
]}

Garbisu, Carlos ^{[8
]}

Soto, Manuel ^{[4
,5
]}

机构：

[1] Consejo Nacl Invest Cient & Tecn, Planta Piloto Proc Ind Microbiol PROIMI, Av Belgrano & Pasaje Caseros, RA-4000 San Miguel De Tucuman, Argentina

[2] Univ Nacl Tucuman, Fac Bioquim Quim & Farm, Ayacucho 491, RA-4000 San Miguel De Tucuman, Argentina

[3] Univ Basque Country, Fac Sci & Technol, Dept Plant Biol & Ecol, UPV EHU, B Sarriena S-N, E-48940 Leioa, Spain

[4] Univ Basque Country, Fac Sci & Technol, Dept Zool & Anim Cell Biol, UPV EHU, B Sarriena S-N, Leioa 48940, Spain

[5] Univ Basque Country, Res Ctr Expt Marine Biol & Biotechnol, Dept Zool & Anim Cell Biol, UPV EHU, Areatza Z-G, E-48620 Plentzia, Spain

[6] Univ Nacl Tucuman, Fac Ciencias Nat, Miguel Lillo 205, RA-4000 San Miguel De Tucuman, Argentina

[7] Univ Nacl Tucuman, Inst Miguel Lillo, Miguel Lillo 205, RA-4000 San Miguel De Tucuman, Argentina

[8] NEIKER, Dept Conservat Nat Resources, C Berreaga 1, E-48160 Derio, Spain

来源：

ENVIRONMENTAL RESEARCH | 2021年 / 194卷

关键词：

Biostimulation; Bioaugmentation; Phytoremediation; Vermiremediation; nZVI; Ecotoxicity;

D O I：

10.1016/j.envres.2020.110666

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Soils contaminated by organic and inorganic pollutants like Cr(VI) and lindane, is currently a main environmental challenge. Biological strategies, such as biostimulation, bioaugmentation, phytoremediation and vermiremediation, and nanoremediation with nanoscale zero-valent iron (nZVI) are promising approaches for polluted soil health recovery. The combination of different remediation strategies might be key to address this problem. For this reason, a greenhouse experiment was performed using soil without or with an organic amendment. Both soils were contaminated with lindane (15 mg kg(-1)) and Cr(VI) (100 or 300 mg kg(-1)). After one month of aging, the following treatments were applied: (i) combination of bioaugmentation (actinobacteria), phytoremediation (Brassica napus), and vermiremediation (Eisenia fetida), or (ii) nanoremediation with nZVI, or (iii) combination of biological treatments and nanoremediation. After 60 days, the wellness of plants and earthworms was assessed, also, soil health was evaluated through physico-chemical parameters and biological indicators. Cr(VI) was more toxic and decreased soil health, however, it was reduced to Cr(III) by the amendment and nZVI and, to a lesser extent, by the biological treatment. Lindane was more effectively degraded through bioremediation. In non-polluted soils, nZVI had strong deleterious effects on soil biota when combined with the organic matter, but this effect was reverted in soils with a high concentration of Cr(VI). Therefore, under our experimental conditions bioremediation might be the best for soils with a moderate concentration of Cr(VI) and organic matter. The application of nZVI in soils with a high content of organic matter should be avoided except for soils with very high concentrations of Cr(VI). According to our study, among the treatments tested, the combination of an organic amendment, biological treatment, and nZVI was shown to be the strategy of choice in soils with high concentrations of Cr(VI) and lindane, while for moderate levels of chromium, the organic amendment plus biological treatment is the most profitable treatment.

引用

页数：12

共 88 条

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