The characterization of biochars derived from rice straw and swine manure, and their potential and risk in N and P removal from water

Luo, Ling; Wang, Guolan; Shi, Guozhong; Zhang, Mengting; Zhang, Jing; He, Jinsong; Xiao, Yinlong; Tian, Dong; Zhang, Yanzong; Deng, Shihuai; Zhou, Wei; Lan, Ting; Deng, Ouping

doi:10.1016/j.jenvman.2019.05.072

Cited by 63 publications

(22 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Among them, the methylene group around 2927 cm −1 is gradually degraded or changed. For the fatty C-H and C=O groups of 2280 cm −1 , the absorption peak gradually increases, especially in Figure 6 b, which reached the maximum at 650 °C/3 h. With the increase of pyrolysis temperature, the biochar components have experienced the transition of excessive char, amorphous char, composite char, and chaotic char in turn [ 27 ]. The aromatic acid -COOH group (1697 cm −1 ) and amide stretching vibration -CON- group (1650 cm −1 ) gradually decrease, and even disappear in some scientific reports [ 32 , 41 ].…”

Section: Resultsmentioning

confidence: 99%

“…But the nitrogen leaching from farmland will lead to many problems such as groundwater pollution and water eutrophication [26]. Fortunately, the adsorption of NO 3 − by biochar is the most effective method to remove nitrogen because of high efficiency, simple equipment, and reliable operation [27]. Indeed, NO 3 − was selected as the object for adsorption application, which has always been a research hotspot [28].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Eco-Friendly Biochar and Valuable Bio-Oil from Caragana korshinskii: Pyrolysis Preparation, Characterization, and Adsorption Applications

et al. 2020

View full text Add to dashboard Cite

Carbonization of biomass can prepare carbon materials with excellent properties. In order to explore the comprehensive utilization and recycling of Caragana korshinskii biomass, 15 kinds of Caragana korshinskii biochar (CB) were prepared by controlling the oxygen-limited pyrolysis process. Moreover, we pay attention to the dynamic changes of microstructure of CB and the by-products. The physicochemical properties of CB were characterized by Scanning Electron Microscope (SEM), BET-specific surface area (BET-SSA), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Fourier Transform Infrared (FTIR), and Gas chromatography-mass spectrometry (GC-MS). The optimal preparation technology was evaluated by batch adsorption application experiment of NO3−, and the pyrolysis mechanism was explored. The results showed that the pyrolysis temperature is the most important factor in the properties of CB. With the increase of temperature, the content of C, pH, mesoporous structure, BET-SSA of CB increased, the cation exchange capacity (CEC) decreased and then increased, but the yield and the content of O and N decreased. The CEC, pH, and BET-SSA of CB under each pyrolysis process were 16.64–81.4 cmol·kg−1, 6.65–8.99, and 13.52–133.49 m2·g−1, respectively. CB contains abundant functional groups and mesoporous structure. As the pyrolysis temperature and time increases, the bond valence structure of C 1s, Ca 2p, and O 1s is more stable, and the phase structure of CaCO3 is more obvious, where the aromaticity increases, and the polarity decreases. The CB prepared at 650 °C for 3 h presented the best adsorption performance, and the maximum theoretical adsorption capacity for NO3− reached 120.65 mg·g−1. The Langmuir model and pseudo-second-order model can well describe the isothermal and kinetics adsorption process of NO3−, respectively. Compared with other cellulose and lignin-based biomass materials, CB showed efficient adsorption performance of NO3− without complicated modification condition. The by-products contain bio-soil and tail gas, which are potential source of liquid fuel and chemical raw materials. Especially, the bio-oil of CB contains α-d-glucopyranose, which can be used in medical tests and medicines.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Eco-Friendly Biochar and Valuable Bio-Oil from Caragana korshinskii: Pyrolysis Preparation, Characterization, and Adsorption Applications

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Biochar has been employed in agricultural fields also for eliminating soil pollutants. Many agricultural residues have been utilized for producing biochar such as rice straw [ 48 ], wheat straw [ 49 ], waste wood [ 50 ], sugar beet tailings [ 51 ], corn cob [ 52 ], etc. These biomasses are composed of mostly cellulose, hemicellulose and lignin components.…”

Section: Introductionmentioning

confidence: 99%

A critical review on the biochar production techniques, characterization, stability and applications for circular bioeconomy

Yaashikaa¹,

Kumar²,

Varjani

et al. 2020

Biotechnology Reports

534

186

View full text Add to dashboard Cite

show abstract

“…The CTB and FTB showed higher values of the H/C (CTB: 0.34 and FTB: 0.36), O/C (CTB: 0.08 and FTB: 0.12), and (O + N)/C (CTB: 0.10 and FTB: 0.12) ratios compared to the TB (H/C = 0.22, O/C = 0.04, and (O + N)/C = 0.06). These results showed that FTB contained relatively less aromatic functional groups than those of TB and CTB [36]. Furthermore CTB and FTB exhibited larger specific surface areas (TB = 9.21 m 2 g −1 ; CTB = 342.11 m 2 g −1 ; 558.71 m 2 g −1 ), larger pore volumes (TB = 0.01 cm 3 g −1 ; CTB = 0.36 cm 3 g −1 ; FTB = 0.18 cm 3 g −1 ), and smaller average pore sizes (TB = 6.07 nm; CTB = 3.67 nm; FTB = 3.64 nm) compared with TB, indicating that activation process with CaCl 2 and FeCl 3 was effective in improving the physicochemical characteristics of the tangerine peel biochars related to PO 4 3− adsorption [37].…”

Section: Elemental Composition and Functionality Analysesmentioning

confidence: 88%

Adsorption Characteristics of Phosphate Ions by Pristine, CaCl2 and FeCl3-Activated Biochars Originated from Tangerine Peels

Son

Lee

et al. 2021

Separations

View full text Add to dashboard Cite

This study has evaluated the removal efficiencies of phosphate ions (PO43−) using pristine (TB) and chemical-activated tangerine peel biochars. The adsorption kinetics and isotherm presented that the enhanced physicochemical properties of TB surface through the chemical activation with CaCl2 (CTB) and FeCl3 (FTB) were helpful in the adsorption capacities of PO43− (equilibrium adsorption capacity: FTB (1.655 mg g−1) > CTB (0.354 mg g−1) > TB (0.104 mg g−1)). The adsorption kinetics results revealed that PO43− removal by TB, CTB, and FTB was well fitted with the pseudo-second-order model (R2 = 0.999) than the pseudo-first-order model (R2 ≥ 0.929). The adsorption isotherm models showed that the Freundlich equation was suitable for PO43− removal by TB (R2 = 0.975) and CTB (R2 = 0.955). In contrast, the Langmuir equation was proper for PO43− removal by FTB (R2 = 0.987). The PO43− removal efficiency of CTB and FTB decreased with the ionic strength increased due to the compression of the electrical double layer on the CTB and FTB surfaces. Besides, the PO43− adsorptions by TB, CTB, and FTB were spontaneous endothermic reactions. These findings demonstrated FTB was the most promising method for removing PO43− in waters.

show abstract

The characterization of biochars derived from rice straw and swine manure, and their potential and risk in N and P removal from water

Cited by 63 publications

References 46 publications

The Eco-Friendly Biochar and Valuable Bio-Oil from Caragana korshinskii: Pyrolysis Preparation, Characterization, and Adsorption Applications

The Eco-Friendly Biochar and Valuable Bio-Oil from Caragana korshinskii: Pyrolysis Preparation, Characterization, and Adsorption Applications

A critical review on the biochar production techniques, characterization, stability and applications for circular bioeconomy

Adsorption Characteristics of Phosphate Ions by Pristine, CaCl2 and FeCl3-Activated Biochars Originated from Tangerine Peels

Contact Info

Product

Resources

About