In-Situ Bioremediation of DDTs and PAH Contaminated Aging Farmland Soil Using Blood Meal. Issue 6 (18th August 2017)

• Record Type: Journal Article
• Authors: Wang, Hui; Wang, Xiaoxu; Liu, Chunyue; Wang, Yinggang; Rong, Luoge; Sun, Lina; Luo, Qing; Wu, Hao
• Is Part Of: Soil & sediment contamination. Volume 26:Issue 6(2017)
• Page Start: 623
• Page End: 635
• Publication Date: 2017-08-18
• Subjects: DDTs -- PAHs -- blood meal -- biostimulation -- aged contaminated farmland soil -- field test; Soil pollution -- Periodicals; Soil protection -- Periodicals; 628.5505
• DOI: 10.1080/15320383.2017.1385593
• Languages: English
• ISSNs: 1532-0383

Abstract

ABSTRACT: The use of blood meal was studied for in-site bioremediation of contaminated farmland soil. The combination of blood meal and indigenous microorganisms helped to in-site remediate the combined contaminated aging farmland soil of DDTs and PAH in Shenyang, China. The concentration of DDTs and PAHs was 47.94 ± 0.63 μg/kg and 690.10 ± 5.16 μg/kg, respectively. Biostimulation using blood meal or glucose promoted the bioremediation rate of DDTs and PAHs. Compared to glucose, blood meal was a longer term repair additive of DDTs and PAHs, and the remediation result was more efficient and durable. In the blood meal treatment, plowing the soil once every 7 days could increase the soil enzyme activities and bacterial populations, and it could significantly promote the remediation rates of DDTs ( P < 0.05) and more evidently promote the remediation rates of PAHs. The DDTs and PAHs remediation rates increased from 32.18% and 20.17% to 43.41% and 26.09%, respectively, in soil treated with blood meal and plowed weekly after the five month remediation. This study provides an highly efficient in-site farmland soil bioremediation technology that could have practical utility.