Remediation of neonicotinoid-contaminated soils using peanut shell biochar and composted chicken manure: Transformation mechanisms of geochemical fractions

被引：2

作者：

Ji, Shu ^{[1
]}

Cheng, Haomiao ^{[1
]}

Rinklebe, Joerg ^{[2
]}

Liu, Xiang ^{[3
]}

Zhu, Tengyi ^{[1
]}

Wang, Menglei ^{[1
,4
]}

Xu, Hanyang ^{[1
]}

Wang, Shengsen ^{[1
,5
]}

机构：

[1] Yangzhou Univ, Sch Environm Sci & Engn, Sch Hydraul Sci & Engn, Yangzhou 225127, Peoples R China

[2] Univ Wuppertal, Inst Fdn Engn Water & Waste Management, Sch Architecture & Civil Engn, Lab Soil & Groundwater Management, Pauluskirchstr 7, D-42285 Wuppertal, Germany

[3] Hohai Univ, Coll Agr Sci & Engn, Nanjing 210098, Peoples R China

[4] Shanghai Construct 2 Grp Co Ltd, Shanghai 200030, Peoples R China

[5] Jiangsu Collaborat Innovat Ctr Solid Organ Waste R, Nanjing 210095, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2024年 / 466卷

基金：

中国国家自然科学基金;

关键词：

Combined remediation; Dynamic distribution; Sequential extraction; Organic fertilizer; Non-steady state model; ORGANIC-COMPOUNDS; SORPTION; DESORPTION; FATE; PHENANTHRENE; DEGRADATION; EXTRACTION; TOXICITY; RESIDUES; MODEL;

D O I：

10.1016/j.jhazmat.2024.133619

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Soil remediation techniques are promising approaches to relieve the adverse environmental impacts in soils caused by neonicotinoids application. This study systematically investigated the remediation mechanisms for peanut shell biochar (PSB) and composted chicken manure (CCM) on neonicotinoid-contaminated soils from the perspective of transformation of geochemical fractions by combining a 3-step sequential extraction procedure and non-steady state model. The neonicotinoid geochemical fractions were divided into labile, moderate-adsorbed, stable-adsorbed, bound, and degradable fractions. The PSB and CCM addition stimulated the neonicotinoid transformation in soils from labile fraction to moderate-adsorbed and stable-adsorbed fractions. Compared with unamended soils, the labile fractions decreased from 47.6% +/- 11.8% of the initial concentrations to 12.1 +/- 9.3% in PSB-amended soils, and 7.1 +/- 4.9% in PSB and CCM-amended soils, while the proportions of moderate-adsorbed and stable-adsorbed fractions correspondingly increased by 1.8-2.4 times and 2.3-4.8 times, respectively. A small proportion (<4.8%) in bound fractions suggested there were rather limited bound-residues after 48 days incubation. The PSB stimulated the -NO2-containing neonicotinoid-degraders, which promoted the degradable fractions of corresponding neonicotinoids by 8.2 +/- 6.3%. Degradable fraction of neonicotinoids was the dominant fate in soils, which accounted for 58.3 +/- 16.7%. The findings made beneficial theoretical supplements and provided valuable empirical evidence for the remediation of neonicotinoid-contaminated soils.

引用

页数：11