Active iron bound to SOM catalyzes the oxidization of alkanes in soil by H2O2

2018 ◽  
Vol 20 (9) ◽  
pp. 1273-1284 ◽  
Author(s):  
Jinlan Xu ◽  
Qianqian Cao ◽  
Miaojia Zhang ◽  
Chengwei Yang
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Crude Oil ◽  
Contaminated Soil ◽  
Active Iron ◽  
Oxidation Experiment ◽  
Fenton System

To explore the oxidation effects and mechanisms for the oxidation of alkanes by H2O2 in a Fenton system catalyzed by two types of iron bound to soil organic matter (Fe-SOM) in crude oil-contaminated soil, an oxidation experiment was performed in active Fe-SOM and Fe-SOM systems.

scholarly journals Fractionation of Heavy Metals in Multi-Contaminated Soil Treated with Biochar Using the Sequential Extraction Procedure

Biomolecules ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 448
Author(s):  
Mahrous Awad ◽  
Zhongzhen Liu ◽  
Milan Skalicky ◽  
Eldessoky S. Dessoky ◽  
Marian Brestic ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Ph ◽  
Contaminated Soil ◽  
Contaminated Soils ◽  
Extraction Procedure ◽  
Sequential Fractionation ◽  
Relationship Of ◽  
The Relationship

Heavy metals (HMs) toxicity represents a global problem depending on the soil environment’s geochemical forms. Biochar addition safely reduces HMs mobile forms, thus, reducing their toxicity to plants. While several studies have shown that biochar could significantly stabilize HMs in contaminated soils, the study of the relationship of soil properties to potential mechanisms still needs further clarification; hence the importance of assessing a naturally contaminated soil amended, in this case with Paulownia biochar (PB) and Bamboo biochar (BB) to fractionate Pb, Cd, Zn, and Cu using short sequential fractionation plans. The relationship of soil pH and organic matter and its effect on the redistribution of these metals were estimated. The results indicated that the acid-soluble metals decreased while the fraction bound to organic matter increased compared to untreated pots. The increase in the organic matter metal-bound was mostly at the expense of the decrease in the acid extractable and Fe/Mn bound ones. The highest application of PB increased the organically bound fraction of Pb, Cd, Zn, and Cu (62, 61, 34, and 61%, respectively), while the BB increased them (61, 49, 42, and 22%, respectively) over the control. Meanwhile, Fe/Mn oxides bound represents the large portion associated with zinc and copper. Concerning soil organic matter (SOM) and soil pH, as potential tools to reduce the risk of the target metals, a significant positive correlation was observed with acid-soluble extractable metal, while a negative correlation was obtained with organic matter-bound metal. The principal component analysis (PCA) shows that the total variance represents 89.7% for the TCPL-extractable and HMs forms and their relation to pH and SOM, which confirms the positive effect of the pH and SOM under PB and BB treatments on reducing the risk of the studied metals. The mobility and bioavailability of these metals and their geochemical forms widely varied according to pH, soil organic matter, biochar types, and application rates. As an environmentally friendly and economical material, biochar emphasizes its importance as a tool that makes the soil more suitable for safe cultivation in the short term and its long-term sustainability. This study proves that it reduces the mobility of HMs, their environmental risks and contributes to food safety. It also confirms that performing more controlled experiments, such as a pot, is a disciplined and effective way to assess the suitability of different types of biochar as soil modifications to restore HMs contaminated soil via controlling the mobilization of these minerals.

Effects of soil organic matter and ageing on remediation of diesel-contaminated soil

2012 ◽  
Vol 33 (23) ◽  
pp. 2661-2672 ◽  
Author(s):  
Pao-Wen Grace Liu ◽  
Sih-Yu Wang ◽  
Shen-Gzhi Huang ◽  
Ming-Zhi Wang
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Contaminated Soil

Influence of Soil Organic Matter on Copper Extraction from Contaminated Soil

2007 ◽  
Vol 16 (3) ◽  
pp. 323-335 ◽  
Author(s):  
L. Di Palma ◽  
P. Ferrantelli ◽  
C. Merli ◽  
E. Petrucci ◽  
I. Pitzolu
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Contaminated Soil ◽  
Copper Extraction

Fractionation of copper and cadmium and their binding with soil organic matter in a contaminated soil amended with organic materials

2010 ◽  
Vol 10 (6) ◽  
pp. 973-982 ◽  
Author(s):  
Ibrahim Mohamed ◽  
Bocar Ahamadou ◽  
Ming Li ◽  
Changxiu Gong ◽  
Peng Cai ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Contaminated Soil ◽  
Organic Materials

scholarly journals Potential of the soil microbial biomass C to tolerate and degrade persistent organic pollutants

2008 ◽  
Vol 3 (No. 1) ◽  
pp. 12-20 ◽  
Author(s):  
G. Mühlbachová
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Microbial Biomass ◽  
Contaminated Soil ◽  
Soil Microorganisms ◽  
Soil Microbial Biomass ◽  
Microbial Biomass C ◽  
Microbial Activities ◽  
Soil Microbial Biomass C ◽  
Soil Microbial

A 12-day incubation experiment with the addition of glucose to soils contaminated with persistent organic pollutants (POPs) was carried out in order to estimate the potential microbial activities and the potential of the soil microbial biomass C to degrade 1,1,1-trichloro-2,2-bis(p-chlorophenyl) ethane (DDT), polychlorinated biphenyls (PCB) and polycyclic aromatic hydrocarbons (PAHs). The microbial activities were affected in different ways depending on the type of pollutant. The soil organic matter also played an important role. The microbial activities were affected particularly by high concentrations of PAHs in the soils. Soil microorganisms in the PAHs contaminated soil used the added glucose to a lesser extent than in the non-contaminated soil, which in the contaminated soil resulted in a higher microbial biomass content during the first day of incubation. DDT, DDD and DDE, and PCB affected the soil microbial activities differently and, in comparison with control soils, decreased the microbial biomass C during the incubation. The increased microbial activities led to a significant decrease of PAH up to 44.6% in the soil long-term contaminated with PAHs, and up to 14% in the control soil after 12 days of incubation. No decrease of PAHs concentrations was observed in the soil which was previously amended with sewage sludges containing PAHs and had more organic matter from the sewage sludges. DDT and its derivates DDD and DDE decreased by about 10%, whereas the PCB contents were not affected at all by microbial activities. Studies on the microbial degradation of POPs could be useful for the development of methods focused on the remediation of the contaminated sites. An increase of soil microbial activities caused by addition of organic substrates can contribute to the degradation of pollutants in some soils. However, in situ biodegradation may be limited because of a complex set of environmental conditions, particularly of the soil organic matter. The degradability and availability of POPs for the soil microorganisms has to be estimated individually for each contaminated site.

Effect of soil organic matter on petroleum hydrocarbon degradation in diesel/fuel oil-contaminated soil

2020 ◽  
Vol 129 (5) ◽  
pp. 603-612 ◽  
Author(s):  
Yun-An Chen ◽  
Pao-Wen Grace Liu ◽  
Liang-Ming Whang ◽  
Yi-Ju Wu ◽  
Sheng-Shung Cheng
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Diesel Fuel ◽  
Contaminated Soil ◽  
Petroleum Hydrocarbon ◽  
Fuel Oil ◽  
Hydrocarbon Degradation

Effects of soil organic matter and bacterial community shift on bioremediation of diesel-contaminated soil

2013 ◽  
Vol 85 ◽  
pp. 661-670 ◽  
Author(s):  
Pao-Wen Grace Liu ◽  
Tsung Chain Chang ◽  
Chih-Hung Chen ◽  
Ming-Zhi Wang ◽  
Han-Wei Hsu
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Bacterial Community ◽  
Contaminated Soil ◽  
Community Shift
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