Cadmium adsorption characteristics of biochars derived using various pine tree residues and pyrolysis temperatures

Park, Jong‐Hwan; Wang, Jim J.; Kim, Seong‐Heon; Kang, Sewon; Jeong, Chang Yoon; Jeon, Jong-Rok; Park, Ki Hun; Cho, Ju-Sik; DeLaune, Ronald D.; Seo, Dong‐Cheol

doi:10.1016/j.jcis.2019.06.032

Cited by 131 publications

(25 citation statements)

References 43 publications

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“…Interestingly, all pine bark nuggets (PBN) types of biochar had the highest yield with the highest carbon content. Our yields were more than 50% higher than the yields reported by Park et al (2019), who employed similar pyrolytic conditions, but under the nitrogen gas only. It should be noted that our pyrolytic tests were done under limited oxygen presence and without initial purge with nitrogen gas but provided a better yield of the final product.…”

Section: Biochar Yield and Proximate Analysiscontrasting

confidence: 68%

Impact of Biomass Source and Pyrolysis Parameters on Physicochemical Properties of Biochar Manufactured for Innovative Applications

Štefanko

Leszczyńska

2020

Front. Energy Res.

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Manufacturing biochar for energy and high-tech applications requires a specific set of physicochemical parameters based on relationships between initial pyrolytic conditions and properties of starting material, namely biomass. This study compares 20 types of biochar produced from five diverse waste biomasses at two pyrolytic temperatures (400, 700 • C), processing times (2, 5 h) and heating rates (26, 5 • C/min). The manufactured biochar was tested for the yield, fixed C, ash load, size of developed surface area, porosity, nutrients, and minerals. Leachate tests were performed to determine the stability of biochar, their pH, conductivity, and presence of dissolved nutrients and metals. The proximate analysis demonstrated an increase in fixed C linked to temperature increase from 400 to 700 • C. Biochar produced from organic-rich biomass such as corn stover showed higher content of nutrients, especially potassium and phosphorus on their surfaces and in their leachates, which influenced the development of its surface area at 700 • C. The increase of temperature with prolonged residence time has generated more stable and mostly aromatic structures within biochar when compared to other studied conditions. These findings were confirmed by the FTIR spectra that indicated amplified condensation of aromatic and aliphatic carbons (C = C, C = O, C-H) and a decrease of phenolic bonded water (-OH bonded). Consequently, a specific application of biochar should ultimately dictate the choice of optimal pyrolytic conditions linked to the components of initial biomass.

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Section: Biochar Yield and Proximate Analysiscontrasting

confidence: 68%

Impact of Biomass Source and Pyrolysis Parameters on Physicochemical Properties of Biochar Manufactured for Innovative Applications

Štefanko

Leszczyńska

2020

Front. Energy Res.

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“…Large surface area, low bulk density, great stability and strong adsorption capacity of biochar make it widely used in the sustainable environment and green technologies: monitoring of air pollution [ 1 ], wastewater treatment [ 2 , 3 , 4 ], biotechnology and renewable energy technologies as well as supercapacitors [ 5 ], catalysts [ 6 , 7 ] and green nanocomposites [ 8 ]. In addition, biochar plays an important role in improving soil fertility and increasing the carbon storage in the soil [ 9 , 10 ]. Preparation and application of biochar is one of the effective methods of waste recycling.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Physicochemical Properties of Spruce Cone Biochars Activated by CO2

Jedynak

Charmas

2021

Materials

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In this study the pyrolysis of Norway spruce cones, a lignocellulosic biomass was made. The biochar product was obtained by means of the physical activation method. CO2 was used as the activating gas. The surface properties of biochars were characterized by the nitrogen adsorption/desorption isotherms, scanning electron microscopy (SEM/EDS), X-ray fluorescence energy dispersion spectroscopy (ED-XRF), thermal analysis (TGA/DTA), infrared spectroscopy (ATR FT-IR), Raman spectroscopy and the Boehm’s titration method as well as the point of zero charge (pHpzc). The adsorption capacity and the possibility of ammonia desorption (TPD) were also examined. It has been shown that spruce cones can be successfully used as a cheap precursor of well-developed surface biochars, characterized by a large pore volume and good sorption properties. All obtained activated biochars exhibit a largely microporous structure and an acidic character surface. The investigated activated materials have the specific surface areas from 112 to 1181 m2 g−1. The maximum NH3 adsorption capacity of the activated biochar was determined to be 5.18 mg g−1 (88.22 mmol g−1) at 0 °C. These results indicate the applicability of spruce cones as a cheap precursor for the sustainable production of the cost-effective and environmentally friendly biochar adsorbent.

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“…Application of native or dried biomass to separate MCs from aqueous solutions can cause secondary contamination by releasing other polymeric substances of heterogeneous composition into purified solution. The instability of biomass-derived sorbents represents a hazardous point that has to be mentioned [78]. Therefore, inorganic and thermochemically transformed materials are a more promising choice [79].…”

Section: Alternative Microcystin Separation Sorbentsmentioning

confidence: 99%

The Use of Biochar and Pyrolysed Materials to Improve Water Quality through Microcystin Sorption Separation

Frišták

Laughinghouse

Bell

2020

Water

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Harmful algal blooms have increased globally with warming of aquatic environments and increased eutrophication. Proliferation of cyanobacteria (blue-green algae) and the subsequent flux of toxic extracellular microcystins present threats to public and ecosystem health and challenges for remediation and management. Although methods exist, there is currently a need for more environmentally friendly and economically and technologically feasible sorbents. Biochar has been proposed in this regard because of its high porosity, chemical stability, and notable sorption efficiency for removing of cyanotoxins. In light of worsening cyanobacterial blooms and recent research advances, this review provides a timely assessment of microcystin removal strategies focusing on the most pertinent chemical and physical sorbent properties responsible for effective removal of various pollutants from wastewater, liquid wastes, and aqueous solutions. The pyrolysis process is then evaluated for the first time as a method for sorbent production for microcystin removal, considering the suitability and sorption efficiencies of pyrolysed materials and biochar. Inefficiencies and high costs of conventional methods can be avoided through the use of pyrolysis. The significant potential of biochar for microcystin removal is determined by feedstock type, pyrolysis conditions, and the physiochemical properties produced. This review informs future research and development of pyrolysed materials for the treatment of microcystin contaminated aquatic environments.

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Cadmium adsorption characteristics of biochars derived using various pine tree residues and pyrolysis temperatures

Cited by 131 publications

References 43 publications

Impact of Biomass Source and Pyrolysis Parameters on Physicochemical Properties of Biochar Manufactured for Innovative Applications

Impact of Biomass Source and Pyrolysis Parameters on Physicochemical Properties of Biochar Manufactured for Innovative Applications

Preparation and Characterization of Physicochemical Properties of Spruce Cone Biochars Activated by CO2

The Use of Biochar and Pyrolysed Materials to Improve Water Quality through Microcystin Sorption Separation

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