Poultry manure and sugarcane straw biochars modified with MgCl2 for phosphorus adsorption

Novais, Sarah Vieira; Zenero, Mariana Delgado Oliveira; Tronto, Jairo; Conz, Rafaela Feola; Cerri, Carlos Eduardo Pellegrino

doi:10.1016/j.jenvman.2018.02.088

Cited by 86 publications

(33 citation statements)

References 30 publications

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“…(2018) reported the same results for P adsorption by fly ash. According to Novais et al. (2018), the values of n f ranged from 1 to 3 for P adsorption onto different types of biochar.…”

Section: Resultsmentioning

confidence: 99%

Investigation of Taguchi optimization, equilibrium isotherms, and kinetic modeling for phosphorus adsorption onto natural zeolite of clinoptilolite type

Razmi

Ghasemi-Fasaei

2018

Adsorption Science & Technology

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Adsorption process plays an important role in the removal of phosphorus from aqueous solutions. A laboratory experiment was conducted to investigate the adsorption characteristics of phosphorus onto natural zeolite and to find out the relative importance of some controllable treatments in phosphorus adsorption process using the Taguchi optimization methodology. Results showed that the adsorption of phosphorus in the presence of Fe 3þ and Al 3þ was higher than that in the absence of these two cations probably due to the adsorption of phosphorus-bearing anions on opposite charges of these cations. Also, increase in contact time tended phosphorus adsorption to be increased. The addition of base and acid treatments caused an increase and a decrease, respectively, on phosphorus adsorption. The order of effectiveness of treatments on the values of phosphorus adsorption was as follows: acid/base treatment >sorbent to sorbate ratio > modification with aluminium (Al)/iron (Fe) >contact time >phosphorus concentration. Phosphorus adsorption data well fitted to the Freundlich isotherm model. The pseudo-second order was the best model describing phosphorus adsorption kinetics. According to the results reported herein, it is assumed that the main mechanism controlling phosphorus adsorption onto natural zeolite is chemisorption.

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“…(2018) reported the same results for P adsorption by fly ash. According to Novais et al. (2018), the values of n f ranged from 1 to 3 for P adsorption onto different types of biochar.…”

Section: Resultsmentioning

confidence: 99%

Investigation of Taguchi optimization, equilibrium isotherms, and kinetic modeling for phosphorus adsorption onto natural zeolite of clinoptilolite type

Razmi

Ghasemi-Fasaei

2018

Adsorption Science & Technology

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“…Release of P occurred in RSB300 and RSB500, PCB500 and PCB700, and SDB500 and SDB700 (Figure 2a-c), respectively. Similarly, PCB300 and SDB300 presented lower P adsorption capacity (Figure 2b,c): Novais et al [23] showed that some biochars have very low or zero P adsorption, due to its behavior as "great anion", which prevents the adsorption of anions such as phosphates. Schneider and Haderlein [24] demonstrated that the dissolved organic matter released from the biochar pyrolysis at 200 • C when placed into the P solution competed for sorption sites and inhibited P sorption.…”

Section: Sorption Kinetics Of Biocharmentioning

confidence: 93%

Phosphorus and Nitrogen Adsorption Capacities of Biochars Derived from Feedstocks at Different Pyrolysis Temperatures

Zhou

et al. 2019

Water

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This study investigates the P and NO3− adsorption capacities of different biochars made from plant waste including rice straw (RSB), Phragmites communis (PCB), sawdust (SDB), and egg shell (ESB) exposed to a range of pyrolysis temperatures (300, 500 and 700 °C). Results indicate that the effect of pyrolysis temperature on the physiochemical properties of biochar varied with feedstock material. Biochars derived from plant waste had limited adsorption or even released P and NO3−, but adsorption of P capacity could be improved by adjusting pyrolysis temperature. The maximum adsorption of P on RSB700, PCB300, and SDB300, produced at pyrolysis temperature of 700, 300 and 300 °C, was 5.41, 7.75 and 3.86 mg g−1, respectively. ESB can absorb both P and NO3−, and its adsorption capacity increased with an increase in pyrolysis temperature. The maximum NO3− and P adsorption for ESB700 was 1.43 and 6.08 mg g−1, respectively. The less negative charge and higher surface area of ESB enabled higher NO3− and P adsorption capacity. The P adsorption process on RSB, PCB, SDB and ESB, and the NO3− adsorption process on ESB were endothermic reactions. However, the NO3− adsorption process on RSB, PCB and SDB was exothermic. The study demonstrates that the use of egg shell biochar may be an effective way to remove, through adsorption, P and NO3− from wastewater.

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“…Adsorption data of CMB samples were modelled using the Langmuir and Freundlich isotherms as expressed by eqn (5) and 6, respectively. 24 Q e Q max ¼ bC e 1 þ bC e (5)…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Effect of different pyrolysis temperatures on physico-chemical characteristics and lead(ii) removal of biochar derived from chicken manure

et al. 2020

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Poultry manure and sugarcane straw biochars modified with MgCl2 for phosphorus adsorption

Cited by 86 publications

References 30 publications

Investigation of Taguchi optimization, equilibrium isotherms, and kinetic modeling for phosphorus adsorption onto natural zeolite of clinoptilolite type

Investigation of Taguchi optimization, equilibrium isotherms, and kinetic modeling for phosphorus adsorption onto natural zeolite of clinoptilolite type

Phosphorus and Nitrogen Adsorption Capacities of Biochars Derived from Feedstocks at Different Pyrolysis Temperatures

Effect of different pyrolysis temperatures on physico-chemical characteristics and lead(ii) removal of biochar derived from chicken manure

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