Preparation and utilization of anaerobic granular sludge-based biochar for the adsorption of methylene blue from aqueous solutions

Shi, Li; Zhang, Ge; Wei, Dong; Yan, Tao; Xue, Xiaodong; Shi, Shusheng; Wei, Qin

doi:10.1016/j.molliq.2014.07.023

Cited by 122 publications

(29 citation statements)

References 38 publications

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“…Results from this study were in line with previous studies made with similar materials, such as pyrolyzed sludge (24 mg g −1 ), granular sludge ZnCl 2 activated biochar (91 mg g −1 ), biochar/AlOOH nanocomposite (85 mg g −1 ), coffee husk hydrochar (35 mg g −1 ), and composted biowaste pyrochar (15 mg g −1 ) (Anceschi et al 2018;Fan et al 2017;Ronix et al 2017;Shi et al 2014;Zhang and Gao 2013) while the removal capacities for commercial activated carbons may vary from a few hundred milligrams to nearly a thousand milligrams per gram of carbon (Rafatullah et al 2010).…”

Section: Adsorption Of Methylene Bluesupporting

confidence: 91%

The impact of hydrothermal carbonization on the surface functionalities of wet waste materials for water treatment applications

Niinipuu

Latham

Boily

et al. 2020

Environ Sci Pollut Res

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Hydrothermal carbonization (HTC) is an energy-efficient thermochemical process for converting wet waste products into value added materials for water treatment. Understanding how HTC influences the physicochemical properties of the resultant materials is critical in optimizing the process for water treatment, where surface functionality and surface area play a major role. In this study, we have examined the HTC of four wet waste streams, sewage sludge, biosludge, fiber sludge, and horse manure at three different temperatures (180°C, 220°C, and 260°C). The physicochemical properties of these materials were examined via FTIR, SEM and BET with their adsorption capacity were assessed using methylene blue. The yield of solid material after hydrothermal carbonization (hydrochar) decreased with increasing temperature for all samples, with the largest impact on horse manure and fiber sludge. These materials also lost the highest degree of oxygen, while HTC had minimal impact on biosludge and sewage sludge. The differences here were due to the varying compositions of each waste material, FTIR identified resonances related to cellulose in horse manure and fiber sludge, which were not detected in biosludge and sewage sludge. Adsorption capacities varied between 9.0 and 68 mg g −1 with biosludge HTC at 220°C adsorbing the highest amount. Adsorption also dropped drastically at the highest temperature (260°C), indicating a correlation between adsorption capacity and HTC conditions. This was attributed to the loss of oxygen functional groups, which can contribute to adsorption. These results suggest that adsorption properties can be tailored both by selection of HTC temperature and feedstock.

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Section: Adsorption Of Methylene Bluesupporting

confidence: 91%

The impact of hydrothermal carbonization on the surface functionalities of wet waste materials for water treatment applications

Niinipuu

Latham

Boily

et al. 2020

Environ Sci Pollut Res

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“…Similar results were reported for MB adsorption by various adsorbents, such as palm date seed activated carbon (Islam et al 2015), poly dopamine microspheres (Fu et al 2015), and anaerobic granular sludge-based biochar (Shi et al 2014). …”

Section: Kinetic Modelssupporting

confidence: 82%

Adsorption of Methylene Blue by an Efficient Activated Carbon Prepared from Citrullus lanatus Rind: Kinetic, Isotherm, Thermodynamic, and Mechanism Analysis

Üner

Geçgel

Bayrak

2016

Water Air Soil Pollut

120

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By using the activated carbon obtained from Citrullus lanatus rind by zinc chloride activation, methylene blue (MB) removal from aqueous solutions was studied, and the adsorption mechanism was solved through Weber-Morris intraparticle diffusion model, Bangham model, Boyd model, Fourier transform infrared spectra, and scanning electron microscopy. The effects of adsorption parameters (adsorbent concentration, temperature, initial dye concentration, and pH) were investigated. The equilibrium data of MB adsorption were described by applying the Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherm models. The obtained results from adsorption isotherms indicated that Langmuir model is the bestfitted model with the maximum adsorption capacities of 231.48, 243.90, 244.50, and 259.74 mg/g at 25, 35, 45, and 55°C, respectively. The analysis of the kinetic data by pseudo-first-order, pseudo-second-order, and Elovich models displayed that MB adsorption followed pseudo-second-order model. Also, the date obtained from intraparticle diffusion model, Bangham model, and Boyd model presented that intraparticle diffusion, pore diffusion, and film diffusion played significant role in MB adsorption. The thermodynamic studies demonstrated that MB adsorption onto the activated carbon obtained from C. lanatus rind was physical, spontaneous, feasible, and endothermic. Thus, the activated carbon prepared from C. lanatus rind has been an efficient adsorbent for MB removal from an aqueous solution.

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“…Similarly, the parameter 1/n derived for the Freundlich model reflected the difficulty of MB adsorption. Generally, when 1/n is less than 0.5, an adsorbent is easily adsorbed, and when 1/n exceeds 2, the adsorbent is hardly adsorbed [48]. In this research, the value of 1/n for KOH-CSBC and H3PO4-CSBC was less than 0.5, suggesting the adsorption of MB proceeded easily.…”

Section: Adsorption Isothermsmentioning

confidence: 56%

“…The main mechanisms for MB removal by adsorbent or biochar involve physical interaction, ion exchange, electrostatic interaction, π-π stacking, hydrogen bonding and pore filling [48,[57][58][59][60][61][62][63][64][65]. The dominant mechanisms depend on the physicochemical properties of biochar and specific environmental conditions in the solution.…”

Section: Removal Mechanism Of Methylene Blue By Biocharmentioning

confidence: 99%

Preparation of KOH and H3PO4 Modified Biochar and Its Application in Methylene Blue Removal from Aqueous Solution

2019

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Improperly treated or directly discharged into the environment, wastewater containing dyes can destroy the quality of water bodies and pollute the ecological environment. The removal of dye wastewater is urgent and essential. In this study, corn stalk was pyrolyzed to pristine biochar (CSBC) in a limited oxygen atmosphere and modified using KOH and H 3 PO 4 (KOH-CSBC, H 3 PO 4 -CSBC, respectively). The biochars were characterized by surface area and pore size, X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), as well as their behavior in adsorbing methylene blue (MB). Results indicated that the pore structure of CSBC became more developed after modification by KOH. Meanwhile, H 3 PO 4 -CSBC contained more functional groups after activation treatment. The pseudo-second-order kinetic and the Langmuir adsorption isotherm represented the adsorption process well. The maximum MB adsorption capacity of CSBC, KOH-CSBC, and H 3 PO 4 -CSBC was 43.14 mg g −1 , 406.43 mg g −1 and 230.39 mg g −1 , respectively. Chemical modification significantly enhanced the adsorption of MB onto biochar, especially for KOH-CSBC. The adsorption mechanism between MB and biochar involved physical interaction, electrostatic interaction, hydrogen bonding and π-π interaction. Hence, modified CSBC (especially KOH-CSBC) has the potential for use as an adsorbent to remove dye from textile wastewater.

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Preparation and utilization of anaerobic granular sludge-based biochar for the adsorption of methylene blue from aqueous solutions

Cited by 122 publications

References 38 publications

The impact of hydrothermal carbonization on the surface functionalities of wet waste materials for water treatment applications

The impact of hydrothermal carbonization on the surface functionalities of wet waste materials for water treatment applications

Adsorption of Methylene Blue by an Efficient Activated Carbon Prepared from Citrullus lanatus Rind: Kinetic, Isotherm, Thermodynamic, and Mechanism Analysis

Preparation of KOH and H3PO4 Modified Biochar and Its Application in Methylene Blue Removal from Aqueous Solution

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