Characterization of dissolved organic matter from biogas residue composting using spectroscopic techniques

Guo, Xujing; Li, Chongwei; Zhu, Qili; Huang, Tao; Cai, Yu-Dong; Li, Nanxi; Liu, Jianying; Tan, Xiandong

doi:10.1016/j.wasman.2018.06.001

Cited by 57 publications

(31 citation statements)

References 40 publications

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“…The increased SO 4 2− displacement indicated the presence of a small amount of sulfuric acid in E. crassipes. [34]. In this study, the results showed that alcoholic hydroxyls played a more significant role in karst water with high Ca 2+ concentrations.…”

Section: Ion Exchange Analysissupporting

confidence: 48%

“…The spectra band observed at 1033 cm −1 reflected C-O stretching vibration. The spectra peak at 534 cm −1 was attributed to SO 4 2− stretching vibration [34].…”

Section: Morphology Analysismentioning

confidence: 99%

“…These observations are suggestive of cation exchange, whereby Pb was exchanged for Mg, Na, and K during the process of Pb absorption form water. Li et al [34] demonstrated that Ca, Mg, and K were depleted from E. crassipes roots, while Cu and Cr were accumulated upon Pb exposure. Xia [40] also demonstrated that Pb was exchanged for K, Ca, and Mg during the absorption of Pb by E. crassipes, which was consistent with our results.…”

Section: Functional Group Analysismentioning

confidence: 99%

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Effects and Mechanisms of Calcium Ion Addition on Lead Removal from Water by Eichhornia crassipes

Zhou

Jiang

Qin

et al. 2020

IJERPH

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Karst water is rich in calcium ions (Ca 2+ ) and exhibits poor metal availability and low biodegradation efficiency. This study sought to analyze the effects and mechanisms of Ca 2+ on lead (Pb) removal and absorption by Eichhornia crassipes (a floating plant common in karst areas). Moreover, the morphology and functional groups of E. crassipes in water were characterized via SEM, and FTIR. The results demonstrated that the removal rate of Pb in karst water (85.31%) was higher than that in non-karst water (77.04%); however, the Pb bioconcentration amount (BCA) in E. crassipes roots in karst water (1763 mg/kg) was lower than that in non-karst water (2143 mg/kg). With increased Ca 2+ concentrations (60, 80, and 100 mg/L) in karst water, the Pb removal rate increased (85.31%, 88.87%, and 92.44%), the Pb BCA decreased (1763, 1317, and 1095 mg/kg), and the Ca BCA increased (6801, 6955, and 9368 mg/kg), which was attributed to PbCO 3 and PbSO 4 precipitation and competitive Ca and Pb absorption. High Ca 2+ concentrations increased the strength of cation exchange, alleviated the fracture degree of fibrous roots, reduced the atrophy of vascular bundles, protected the cell wall, promoted C-O combined with Pb, enhanced the strength of O-H, SO 4 2− , C=O, and reduced the oxidization of alkynyl acetylene bonds.industrial wastewater discharged by the lead smelting industry. Pb remains and accumulates in the food chain after entering the environment, which causes serious toxicity to organisms. Moreover, Pb affects plant photosynthesis and transpiration capacity [5,6]; therefore, Pb remediation has become the focus of many studies worldwide. Eichhornia crassipes is an aquatic floating plant that is widely distributed all over the world and occurs in large quantities in karst areas in China. E. crassipes has broad, thick, glossy, ovate leaves and stems, which are important for photosynthesis, food production, gas exchange, and water transpiration [7]. This plant is known to adapt to a wide variety of environmental conditions and even grows well in sewage water. Importantly, E. crassipes possesses a high heavy metal tolerance and uptake efficiency and has therefore become popular for water phytoremediation [8]. E. crassipes can reproduce quickly and absorb various pollutants [9]. Suryandari et al.[10] also demonstrated Pb removal efficiencies of up to 99.71% in E. crassipes harvested after nine days.Calcium (Ca) is an essential element for plants; it is an important regulator of plant growth and supports the structure and stability of cell walls, membranes, and membrane-binding proteins. Ca is also a second messenger that regulates the response of plants to environmental changes [11]. Moreover, certain Ca 2+ concentrations could promote growth and development, metabolism, cell structure, and adaptability to heavy metal stress [12][13][14]. Ca 2+ could also inhibit the transport of heavy metals from underground to aboveground plant structures [15]. Increased Ca 2+ concentrations could reduce heavy metal solubility [16] and allevia...

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Section: Ion Exchange Analysissupporting

confidence: 48%

“…The spectra band observed at 1033 cm −1 reflected C-O stretching vibration. The spectra peak at 534 cm −1 was attributed to SO 4 2− stretching vibration [34].…”

Section: Morphology Analysismentioning

confidence: 99%

Section: Functional Group Analysismentioning

confidence: 99%

See 1 more Smart Citation

Effects and Mechanisms of Calcium Ion Addition on Lead Removal from Water by Eichhornia crassipes

Zhou

Jiang

Qin

et al. 2020

IJERPH

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“…Some strong characteristic bands of functional groups were obtained from the FTIR spectra. The spectral peaks at 3453 cm −1 , 2927 cm −1 , 2347 cm −1 , 1651 cm −1 , 1033 cm −1 , and 534 cm −1 represented O-H, C-H, C≡C, C=O, C-O, and the SO 4 2 − stretching vibration, respectively [ 44 , 54 , 55 , 56 ]. However, the organic group C=O is present in proteins, amino acids, and peptides and is often part of the structures of carbohydrates, lipids and so on.…”

Section: Resultsmentioning

confidence: 99%

Efficiency of Pb, Zn, Cd, and Mn Removal from Karst Water by Eichhornia crassipes

Zhou

Jiang

Qin

et al. 2020

IJERPH

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This study experimentally investigated heavy metal removal and accumulation in the aquatic plant Eichhornia crassipes. Pb, Zn, Cd, and Mn concentrations, plant morphology, and plant functional groups were analyzed. Eichhornia crassipes achieved high removal efficiency of Pb and Mn from karst water (over 79.5%), with high proportion of Pb, Zn, and Cd absorption occurring in the first eight days. The highest removal efficiencies were obtained at initial Pb, Zn, Cd, and Mn concentrations of 1 mg/L, 2 mg/L, 0.02 mg/L, and 0.2 mg/L, respectively. Eichhornia crassipes exhibited a high bioconcentration factor (Mn = 199,567 > Pb = 19,605 > Cd = 3403 > Zn = 1913) and a low translocation factor (<1). The roots accumulated more Pb, Zn, Cd, and Mn than the stolons and leaves due to the stronger tolerance of roots. The voids, stomas, air chambers, and airways promoted this accumulation. Pb, Cd, Zn, and Mn likely exchanged with Mg, Na, and K through the cation exchange. C≡C, C=O, SO42−, O-H, C-H, and C-O played different roles during uptake, which led to different removal and accumulation effects.

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“…The region from 3200 to 2500 cm −1 is characterized by asymmetric stretches of C-H bonds with possible intramolecular bonds between phenols; the band is generally weak and may not even be observed, which is supported by the weak signal identified at 2965 cm −1 in all amendments. This signal is important because it correlates linearly with compost humification and maturity; in contrast, the presence of a strong signal from aliphatic C-H stretching is associated with poorly humified amendments [46][47][48]. Thus, the low intensity observed for this signal indicates that growing substrates were highly humified, stable and mature, which would presumably enhance parsley yield.…”

Section: Spectroscopic Characterization-functional Groupsmentioning

confidence: 99%

Spectroscopic and Physicochemical Characterization of Poultry Waste-Based Composts and Charcoal–Compost Mixtures for the Prediction of Dry Matter Yield of Giant of Italy Parsley

Santos

Costa

et al. 2022

Agronomy

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Plant growing substrates obtained by composting agro-industrial waste can serve as organic soil amendments. However, it is crucial to determine the maturity and quality of organic amendments before their application to soil. This study aimed to evaluate the suitability of compost obtained from poultry wastes combined with five different vegetal residues (tree trimmings, sugarcane bagasse, sawdust, cotton residues, and Napier grass) as growth media for container-grown Giant of Italy parsley. Fourier-transform infrared and laser-induced fluorescence spectra were used to characterize the humification extent in composts before and after the addition of charcoal at five inclusion rates (0%, 15%, 30%, 45%, and 60%, weight basis). Spectroscopic measurements identified absorption bands between 1625 and 1448 cm−1 specific to each of the 25 organic amendments evaluated. The most suitable amendments (composts made from sawdust and sugarcane bagasse) were associated with O–H stretching of phenols and aromatic rings. Charcoal addition to composts changed some of their physical characteristics, leading to increased nutrient availability in some cases. Experimental and calculated dry matter yield were compared via multiple linear regression and simple non-linear regression as a function of the spectroscopic and physicochemical (N, P, K, pH, EC, C, HLIF, C:N, CEC, HA:HA) properties of the organic amendments. Regression models accurately assigned high yields to the sawdust- and bagasse-based composts and low yields to the Napier grass- and cotton-based composts. Electrical conductivity (EC) was the main factor limiting potted-parsley productivity, an indication that efficient management of charcoal rate and compost EC levels can aid in predicting parsley yield.

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Characterization of dissolved organic matter from biogas residue composting using spectroscopic techniques

Cited by 57 publications

References 40 publications

Effects and Mechanisms of Calcium Ion Addition on Lead Removal from Water by Eichhornia crassipes

Effects and Mechanisms of Calcium Ion Addition on Lead Removal from Water by Eichhornia crassipes

Efficiency of Pb, Zn, Cd, and Mn Removal from Karst Water by Eichhornia crassipes

Spectroscopic and Physicochemical Characterization of Poultry Waste-Based Composts and Charcoal–Compost Mixtures for the Prediction of Dry Matter Yield of Giant of Italy Parsley

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