Recent developments in biochar utilization as an additive in organic solid waste composting: A review

Xiao, Ran; Awasthi, Mukesh Kumar; Li, Ronghua; Park, Jong‐Hwan; Pensky, Scott; Wang, Quan; Wang, Jim J.; Zhang, Zengqiang

doi:10.1016/j.biortech.2017.07.090

Cited by 236 publications

(67 citation statements)

References 73 publications

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“…Thus, RP TRGs were more likely to be eliminated than EFP and EI TRGs after aerobic composting. The addition of biochar could increase the duration of the thermophilic phase; on the other hand, with the specialty of structure and nutrients, biochar is a suitable habitat and carbon source for microbial communities [34] . Hence, low level addition (6%) of biochar may enhance the thermophilic effect of composting piles to kill some heat-liable bacteria then foster the ARGs elimination, while high level addition (12% and 24%) of biochar to composting piles could better promote the microbial proliferation and lead to the propagation of ARGs they carried.…”

Section: Behaviors Of Trgsmentioning

confidence: 99%

Effects of different biochars on antibiotic resistance genes during swine manure thermophilic composting

Wang

Sui

Shen

et al. 2018

International Journal of Agricultural and Biological Engineering

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Elimination of antibiotic resistance genes (ARGs) in animal manure from concentrated animal feeding operations by thermophilic composting has drawn increasing attention. This study investigated the effects of sawdust biochar, corn stover biochar and peanut hull biochar with three spiked levels on ARGs in swine manure during thermophilic composting. Thirteen ARGs corresponding to four classes of antibiotics (tetracyclines, sulfonamides, macrolides and quinolones) were determined in the composting piles. Results indicated that the ten tested composting groups became fully mature after 30-day thermophilic composting process. tetM, tetO and ermB were reduced in all tested groups; tetC and tetG, tetX, sul1, sul2, ermF, qnrD and aac(6')-Ib were mostly reduced under low level biochar addition but increased under higher level biochar addition; gyrA increased under medium biochar addition and reduced in other groups; oqxB remained comparatively stable throughout the composting process. The addition levels of spiked biochar are more important than types of spiked biochar on the removal of ARGs in the composting pile. The average removal rates of ARGs in the control group, low, medium and high level biochar addition groups were 0.24 logs, 0.52-0.72 logs, -0.52-0.18 logs and -0.19-0.21 logs, respectively. In summary, low level biochar addition could enhance the elimination of studied ARGs in swine manure during the composting process, while medium level biochar addition to the composting piles would increase the risk of ARGs' propagation. et al. Effects of different biochars on antibiotic resistance genes during swine manure thermophilic composting. Int J Agric & Biol Eng, 2018; 11(6): 166-171.

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Section: Behaviors Of Trgsmentioning

confidence: 99%

Effects of different biochars on antibiotic resistance genes during swine manure thermophilic composting

Wang

Sui

Shen

et al. 2018

International Journal of Agricultural and Biological Engineering

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“…After the given contact time, the suspensions were filtered and the filtrates were analyzed to determine the residual fluoride ions. The main factors considered were: solution pH (2, 4, 6, 8, and 10), initial fluoride concentration (20, 40, and 70 mg/L), biochar-La dose (1, 3, 5, 7, and 10 g/L), solution temperature (25,30,35,40, and 50 C), and contact time (3,5,10,20,50,80, and 100 min for the kinetics tests and 6 h for the isotherm tests). The initial concentration of fluoride in wastewater from various industries has a range of 20 to <100 mg/L, so this range of concentration (20-70 mg/L) was used for evaluating the adsorbent.…”

Section: Experimental Design and Proceduresmentioning

confidence: 99%

“…where C 0 (mg/L), C e (mg/L), and C t (mg/L) are the initial, equilibrium, and final content of fluoride ions, respectively, V is the tested solution volume (L), and M is the biochar-La dose (g). The adsorption equilibrium of fluoride was evaluated by adding 5 g of powdered biochar-La into a series of Erlenmeyer flasks containing 100 mL of various concentrations (10,20,40,70, and 100 mg/L) at pH 6 and agitation speed of 120 rpm. After each contact time the residual fluoride concentration of the suspensions was analyzed.…”

Section: Experimental Design and Proceduresmentioning

confidence: 99%

Modification of Tamarix hispida Biochar by Lanthanum Chloride for Enhanced Fluoride Adsorption from Synthetic and Real Wastewater

Habibi

Rouhi

Ramavandi

2018

Env Prog and Sustain Energy

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The purpose of this research was the preparation of Tamarix hispida biochar during a pyrolysis process and then improvement its fluoride adsorption capacity by lanthanum chloride. The biochar powder was amended by lanthanum during a precipitation‐oxidation method to make biochar–lanthanum (biochar–La). Adsorbent characteristics of the fresh and fluoride loaded biochar–La were determined by using Fourier‐transform infrared spectroscopy spectrometer, Brunauer–Emmett–Teller, pH of zero point charge, energy‐dispersive X‐ray spectroscopy, and scanning electron microscopy methods. The mesoporous adsorbent had a surface area of 164.5 m2/g. Effects of some important factors such as initial fluoride concentration (20, 40, and 70 mg/L), biochar–La dose (1–10 g/L), contact time (3–100 min), solution temperature (25–50°C), and initial pH (2–10) were tested. The results showed that fluoride uptake by modified biochar is much more effective than simple one. The adsorption data well followed the Langmuir isotherm (maximum adsorption capacity = 164.23 mg/g) and second‐order kinetic model. Increasing the amount of biochar–La and fluoride concentration was led to increasing and reducing the adsorption efficiency, respectively. The biochar–La adsorbent had a good performance at sixth cycle of reuse (>50% removal). The fluoride content in a real wastewater was reduced from 23 mg/L to around 3 mg/L at conditions of biochar–La: 5 g/L, time: 50 min, and original pH: 6.8. © 2018 American Institute of Chemical Engineers Environ Prog, 38: S298–S305, 2019

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“…This feature is particularly interesting in marginal lands and regions where rain is scarce, and irrigation is difficult for a number of environmental or economic reasons [13,14]. Co-composting of organic matter and biochar, if compared to conventional composting, can positively affect the composting residence time, reducing both N-compound losses in the atmosphere and leaching, favoring the microbiological activity and in turn increasing the humification process, eliminating or reducing the need for additional bulking agent [15][16][17][18]. Biochar, alone or co-composted, also contributes to long-term atmospheric C sequestration in soil, offering a rather low-complexity solution if compared to most of the available C sequestering state-ofthe-art technologies [19,20].…”

Section: Introductionmentioning

confidence: 99%

Production and characterization of co-composted biochar and digestate from biomass anaerobic digestion

Casini¹,

Barsali²,

Rizzo³

et al. 2019

Biomass Conv. Bioref.

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Biochar, produced through pyrolysis of lignocellulosic biomass, is attracting increasing interest as soil amendment thanks to its potential numerous benefits to agriculture, as well as its ability to sequester carbon in soil. Solid fraction of digestate from anaerobic digestion is a well-known N-rich substrate, most often composted in large and small agro-industrial plants. Cocomposting biochar and digestate has the potential to synergistically increase the agronomic value of both components: however, it needs further process and on-field research. The present research work reports on the experimental tests on producing biochar and co-composting various biochar amounts with digestate from biomass anaerobic digestion (product here named COMBI). Biochar was produced by feeding wood chips from chestnut to an innovative oxidative reactor. In order to evaluate the quality of the products obtained by composting and co-composting, correlating this with the final biochar rate in the material, the net organic matter yield, the humified organic matter, the compliance with the European Compost Network Quality Assurance Scheme (ECN-QAS) limits for inorganic pollutants, and the product stabilization and sanitization indexes were investigated. The 11.2% w/w d.b. biochar rate in the initial blend (19.8% w/w d.b final concentration in the co-composted products) offered the best performances and is recommended for further investigation. Additional benefits from co-composting were also assessed, as the reduced dust load that favors safety and health during logistics and use.

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Recent developments in biochar utilization as an additive in organic solid waste composting: A review

Cited by 236 publications

References 73 publications

Effects of different biochars on antibiotic resistance genes during swine manure thermophilic composting

Effects of different biochars on antibiotic resistance genes during swine manure thermophilic composting

Modification of Tamarix hispida Biochar by Lanthanum Chloride for Enhanced Fluoride Adsorption from Synthetic and Real Wastewater

Production and characterization of co-composted biochar and digestate from biomass anaerobic digestion

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