Effect of biomass addition on the surface and adsorption characterization of carbon-based adsorbents from sewage sludge

Wu, Changzi; Song, Min; Jin, Baosheng; Wu, Yimin A.; Huang, Yaji

doi:10.1016/s1001-0742(12)60028-x

Cited by 30 publications

(11 citation statements)

References 34 publications

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“…Chemical activation is a single step process, as both carbonization and activation occur simultaneously at temperatures ranging between 400 o C and 700 o C, which is lower than that of physical activation [9]. However, in some cases, additional carbonization or a pre-carbonization step is performed to produce char prior to chemical impregnation and activation [5,4,[10][11][12][13]. Thus, potassium hydroxide activation can be achieved through either direct chemical activation or char-impregnated chemical activation.…”

mentioning

confidence: 99%

Potassium hydroxide activation of activated carbon: a commentary

Hui

Zaini²

2015

Carbon letters

210

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mentioning

confidence: 99%

Potassium hydroxide activation of activated carbon: a commentary

Hui

Zaini²

2015

Carbon letters

210

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“…In Fig. 8a, the broad band at 3420 cm −1 could be assigned to compounds with -OH and the peak that appeared at 1640 cm −1 was due to -OH bending vibration from water (22,23). Compared with sewage sludge, carbonized sludge showed some changes in some certain absorption characteristic peaks (Fig.…”

Section: Surface Functional Groups Of Adsorbentmentioning

confidence: 98%

Rapid Removal of Dyes by Carbonized Sludge: Process, Effects of Environmental Factors, and Mechanism

Shen

et al. 2014

Separation Science and Technology

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The disposal of sewage sludge is one of the most pressing environmental issues with increasing amount of sewage sludge. Among these methods, carbonized sludge is thought to be a potential approach for resource utilization and becomes one of the most widely used adsorbent for wastewater treatment. However, effects of environmental factors and its relative mechanism for pollutant removal have not been thoroughly studied. In this study, carbonized sludge derived from sewage sludge was investigated. The adsorption of C. I. Acid Red 73 (AR 73) on the carbonized sludge was a rapid process and fit well to the Langmuir model with a maximum adsorption capacity of 137.95 mg g −1 at pH 6.8. In addition, the common coexisting ions had a negligible negative impact on dye adsorption on the carbonized sludge. The magnetic carbonized sludge also exhibited high adsorption efficiency for other anionic dyes. Furthermore, the adsorption mechanism was proposed by analysis Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS), high surface area, and proper porous structure as well as the π -π interaction between dye molecules and the graphene carbon surface were likely be the mechanisms of dye adsorption. Overall, the results reported herein indicated that carbonized sludge is very attractive and implies a potential of practical application for dyeing effluent treatment.

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“…The obtained purified sludge-derived adsorbent with abundant oxygen-containing groups are favorable for organic contaminant removal from wastewater [16]. Besides, increasing the carbon content by adding carbon-rich materials such as corn stalk, leaf litter, and straw was found beneficial to the specific surface area and the capture capacity of the sludge-derived adsorbent [17,18]. Further development focuses on the catalytic activation method in which sewage sludge as carbon precursors are physically mixed with metal complex or metal salts before carbonization or activation [19][20][21].…”

Section: Introductionmentioning

confidence: 95%

Characterization and adsorption properties of low-cost sewage sludge-derived carbon by using poly-aluminium chloride as pore-forming agent

Wang¹,

Song²,

Peng³

et al. 2016

Proceedings of the 2016 5th International Conference on Sustainable Energy and Environment Engineering (ICSEEE 2016)

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Abstract. We have demonstrated a facile and economical method for the synthesis of the sewage sludge-derived carbon. This product was prepared by using poly-aluminium chloride (PAC) as pore-forming agent through high-temperature pyrolysis at 900℃, and employed for the removal of phenol from water. Thermodynamic properties, textural evolution, morphological structure, and surface functional groups of product are characterized. Moreover, the total pore volumes and SSA of the residual carbon increased to 0.1727 cm 3 /g and 141.2 m 2 /g, that expanded to 2.3 times and 2.5 times compared with direct carbonized sample (0.075 cm 3 /g and 55.45 m 2 /g), respectively. The results indicated that the addition of PAC had important effect on the texture, surface properties and adsorption performance. The adsorption kinetics and isotherms studies were investigated in details to reveal that the kinetics and equilibrium adsorptions are well-described by pseudo-second-order kinetics and Langmuir isotherm model, respectively. Remarkably, the resulting adsorbent showed comparably adsorption capacity with the commercial activated carbons. Meanwhile, our method is more economical than other chemical activation methods.

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Effect of biomass addition on the surface and adsorption characterization of carbon-based adsorbents from sewage sludge

Cited by 30 publications

References 34 publications

Potassium hydroxide activation of activated carbon: a commentary

Potassium hydroxide activation of activated carbon: a commentary

Rapid Removal of Dyes by Carbonized Sludge: Process, Effects of Environmental Factors, and Mechanism

Characterization and adsorption properties of low-cost sewage sludge-derived carbon by using poly-aluminium chloride as pore-forming agent

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