Structural characteristics, analytical techniques and interactions with organic contaminants of dissolved organic matter derived from crop straw: a critical review

Wang, Bin; Liu, Chang; Chen, Yuwei; Dong, Faqin; Chen, Shu; Zhang, Di; Zhu, Jieming

doi:10.1039/c8ra06978f

Cited by 30 publications

(7 citation statements)

References 145 publications

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“…C2 and C3 resemble microbial oxidized components and have abundant aromatic structures and high molecular weight [57]. Similar compositions of DOM in different farmland soils were reported by a number of previous studies [17,58,59].…”

Section: Composition Of Dom Fluorescent Componentssupporting

confidence: 77%

“…The detected DOC contents in the experimental soils were the result of different processes including leaching release of soluble organic compounds from straw, decomposition of straw, sorption of DOM to soil particles, and decomposition and transformation of DOM [17,42]. In all the soils, organic matter content decreased rapidly in the first two weeks but slowly afterwards.…”

Section: Dynamics Of Total and Dissolved Organic Matter Content In Soilmentioning

confidence: 99%

“…Crop straw-derived DOM comprises various organic compounds, including non-humic biomolecules (e.g., carbohydrates, amino acids, proteins, lignin, organic acids, and fatty acids) and humic substances (e.g., humic and fulvic acids, which are formed after straw decomposition and transformation) [16]. Compared to soil DOM, straw DOM contains a great deal of lower molecular weight compounds (e.g., amino acids, proteins, monosaccharides, polysaccharides, and carbohydrates), which can be leached and degraded after straw application [17,18]. At a later stage of straw decomposition, the DOM released is mainly aromatic compounds [19,20].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Straw Return and Moisture Condition on Temporal Changes of DOM Composition and Cd Speciation in Polluted Farmland Soil

Yang

Tang

Guan

et al. 2022

IJERPH

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Straw return can improve soil quality and change the mobility and bioavailability of pollutants in soil. Elevated cadmium (Cd) contents in farmland soils were often reported. However, the impacts of straw-derived dissolved organic matter (DOM) on Cd speciation in soil remain poorly understood. In this study, the effects of straw return and moisture condition on temporal changes of DOM composition and Cd speciation in farmland soils were explored through a laboratory incubation experiment. The humified components of DOM were negatively correlated with exchangeable, carbonate-bound, and Fe-Mn oxide-bound Cd (p < 0.01), while its protein-like component was negatively correlated with residual Cd (p < 0.01). It was found that selected fluorescence parameters could be used to predict temporal changes of Cd geochemical fractions. Straw addition led to increases in soil DOM content during the first three days of the incubation. Flooding should be avoided in the first three days following the straw application to reduce the risk of DOM-facilitated Cd mobilization.

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Section: Composition Of Dom Fluorescent Componentssupporting

confidence: 77%

Section: Dynamics Of Total and Dissolved Organic Matter Content In Soilmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Straw Return and Moisture Condition on Temporal Changes of DOM Composition and Cd Speciation in Polluted Farmland Soil

Yang

Tang

Guan

et al. 2022

IJERPH

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“…Soil organic pollution has become a common environmental issue. Cop residues dissolved organic matter plays an important role in affecting the migration and bioavailability of soil organic pollutants [77][78][79]. The calculated maximum sulfamethoxazole adsorption capacity of the purple paddy soils amended with canola straw-derived dissolved organic matter was 2.6 times greater than that of control [78].…”

Section: Organic Pollutantsmentioning

confidence: 93%

Impacts of crop residues on soil health: a review

Chen

Huang

et al. 2021

Environmental Pollutants and Bioavailability

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“…The function of lignocellulose is mainly to protect the straw from the invasion of microorganisms and act as a scaffold between cells [8]. Lignocellulose is entangled with cellulose and hemicellulose, which will affect the microbial degradation efficiency of cellulose and hemicellulose.…”

Section: Types and Development And Utilization Of Crop Strawmentioning

confidence: 99%

Two-Phase High-Temperature Anaerobic Digestion Experiment of Crop Straw

2022

AJAS

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With the rapid development of agriculture, the output of crop straw has also increased year by year. The treatment and development and utilization of crop straw have become the focus of attention from all walks of life. In order to improve the utilization rate of crop stalks, save energy and protect the environment, this article conducted an in-depth study on the two-phase high-temperature anaerobic digestion test of crop stalks. First, the response surface method is used to control the organic loading ratio and the inoculation ratio respectively, and analyze the daily methane production and daily cumulative production. The test results showed that the A5 group on the 5th day (the organic loading ratio was 20gVS/L) had the highest single-day and cumulative methane production, which were 6.15mL/gVS and 19.57mL/gVS, respectively. When the inoculation ratio was 0.4 on the 25th day, the B1 group had the highest methane production, which was 2.88 mL/gVS. Then, the rice straw was treated by ammoniating treatment and multi-strain cooperative treatment to analyze the differences in pH value, ammonia nitrogen content and lignocellulose degradation rate. The test data showed that the pH values of the two groups were between 7 and 8. The ammonia nitrogen content of the ammoniated treatment reached 4485.1mg/L, and the degradation rates of lignocellulose on the 35th day of the ammoniated treatment and the multi-strain co-treatment were 24.14% and 35.33%, respectively. This shows that the effect of multi-strains synergistic treatment is better than ammoniated treatment, with lower ammonia nitrogen content and higher lignocellulose degradation rate. Finally, under the same experimental conditions, two-phase high-temperature anaerobic digestion experiments were carried out using rice straw and corn straw, respectively, to analyze the differences in pH, ammonia nitrogen content and lignocellulose degradation rate. The pH values of the rice straw and corn straw reactors were 7.56 and 8.21, the ammonia nitrogen content was 984.2 and 1128.6 mg/L, respectively, and the lignocellulose degradation rate was 34.54% and 25.38%, respectively. This shows that under the same reaction conditions, rice straw is better than corn straw, has lower ammonia nitrogen content and higher lignocellulose degradation rate, and its gas production and utilization are higher.

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Structural characteristics, analytical techniques and interactions with organic contaminants of dissolved organic matter derived from crop straw: a critical review

Abstract: Analytical techniques for structural characteristics of dissolved organic matter derived from crop straw (CDOM), and the effect of CDOM on the fate and transport of organic contaminants (OCs).

Cited by 30 publications

References 145 publications

Effects of Straw Return and Moisture Condition on Temporal Changes of DOM Composition and Cd Speciation in Polluted Farmland Soil

Effects of Straw Return and Moisture Condition on Temporal Changes of DOM Composition and Cd Speciation in Polluted Farmland Soil

Impacts of crop residues on soil health: a review

Two-Phase High-Temperature Anaerobic Digestion Experiment of Crop Straw

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