Pore structure and surface chemistry of adsorbents obtained by pyrolysis of sewage sludge-derived fertilizer

Bagreev, Andrey; Bandosz, Teresa J.; Locke, David C.

doi:10.1016/s0008-6223(01)00026-4

Cited by 285 publications

(216 citation statements)

References 28 publications

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“…However, BET surface areas for both biochars are comparable to the biochars examined in the literature ranging from 1.89 to 141 m 2 g −1 (Mohamad et al, 2011;Anchan and Kunio, 2012;Samsuri et al, 2013). Generally, both biochars exhibit mesopores diameter (≈4 nm) which indicate the potential of adsorption capacity of biochars at the liquid-solid interface (Bagreev et al, 2001). Indeed, this have been confirmed by sorption experiment results for As and Cd through Langmuir isotherm ( Table 3).…”

Section: Discussionsupporting

confidence: 78%

Characterization of Oil Palm Empty Fruit Bunch and Rice Husk Biochars and Their Potential to Adsorb Arsenic and Cadmium

Sari

Ishak

Bakar

2014

American Journal of Agricultural and Biological Sciences

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Biochar as a new soil amendment has a potential in controlling the fate of trace elements in the soil system. However, the production of biochar from different feedstocks and pyrolysis conditions resulted in variable biochar properties which have an influence on trace elements availability. The experimental works are focused on physical and chemical properties of biochars produced from Empty Fruit Bunch (EFB) and Rice Husk (RH) as heavy metals adsorbents. The morphology of EFB biochar comprise rigid structure with uniform pores size. The surface area of biochars ranged between 23.22-46.32 m 2 g −1 , dominated with mesopores. The chemical characterization of biochars revealed high carbon content in EFB biochar compared to RH biochar (54.08 and 7.78%). Both biochars are alkaline in nature (>pH 9) and contain substantial amounts of N, P, K, Ca and Mg. Fourier transform infra-red spectra showed the heterogenic functional groups on EFB biochar surface and domination of silica content in RH biochar. The batch experiment was employed to determine the adsorption capacity of these biochars for As and Cd. The adsorption data were fitted well in Langmuir isotherm with high correlation coefficient (R 2 >0.9) for As and Cd. The q max of EFB biochar for As and Cd was higher than RH biochar. The q max of EFB biochar was 0.4240 and 15.1515 mg g −1 for As and Cd, respectively. In contrast, the q max of RH biochar for As and Cd was only 0.3522 and 3.1908 mg g −1 . The results show that EFB biochar and RH biochar have potentials as good sorbent for As and Cd. Therefore, it can be suggested that the application of these biochars may possibly reduce the trace elements availability in the contaminated soil.

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Section: Discussionsupporting

confidence: 78%

Characterization of Oil Palm Empty Fruit Bunch and Rice Husk Biochars and Their Potential to Adsorb Arsenic and Cadmium

Sari

Ishak

Bakar

2014

American Journal of Agricultural and Biological Sciences

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“…The carbonized sludge and activated carbon manufactured through such process are analyzed with iodine adsorptivity [8], SEM (S-4800, Hitachi, Japan), adsorbent yield [9] and pore characteristics (BET, BJH, HK).…”

Section: Experiments Methodsmentioning

confidence: 99%

Characteristics on Carbonization and Steam Activation of Sewage Sludge

Jung¹,

Chun²

2009

Open Proc Chem J

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A number of methods are presented to treat sewage sludge. However, the sludge treated in each treatment process has a problem of heavy metal elution. Currently, the treatment of sewage sludge through carbonization is highlighted to solve such problem. This study carried out research of optimum carbonization and activation condition and analysis of adsorption characteristics in order to treat sewage sludge through carbonization and steam activation and to cycle it as activated carbon. The optimum carbonization and activation conditions were achieved through variable studies and based on iodine adsorptivity. In addition, an analysis was performed with nitrogen adsorption and a SEM to confirm adsorption characteristics and pore development. The results showed that the adsorption capacity of activated derived from sewage (hereinafter referred to as "activated carbon") is improved and porosity is formed through carbonization and steam activation. In particular, micropore is mostly developed by steam activation.

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“…However, microwaving HFS is potentially feasible for heavy metal digestion for extraction and recovery. sludge (Grube et al, 2006;Smidt and Meissl, 2007), while CHN analysis suggests signifcant partitioning into the liquor phase of the original N percentage characterized in raw samples (Bagreev et al, 2001;Afolabi et al, 2015). Ammonia recovery may be seen as an apparent additional economic benefit from microwaving HFS.…”

Section: Heavy Metals Recoverymentioning

confidence: 99%

Microwaving human faecal sludge as a viable sanitation technology option for treatment and value recovery – A critical review

Afolabi

Sohail

2017

Journal of Environmental Management

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Pore structure and surface chemistry of adsorbents obtained by pyrolysis of sewage sludge-derived fertilizer

Cited by 285 publications

References 28 publications

Characterization of Oil Palm Empty Fruit Bunch and Rice Husk Biochars and Their Potential to Adsorb Arsenic and Cadmium

Characterization of Oil Palm Empty Fruit Bunch and Rice Husk Biochars and Their Potential to Adsorb Arsenic and Cadmium

Characteristics on Carbonization and Steam Activation of Sewage Sludge

Microwaving human faecal sludge as a viable sanitation technology option for treatment and value recovery – A critical review

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