Chromium removal using magnetic biochar derived from herb-residue

Shang, Jingge; Pi, Jiachang; Zong, Mingzhu; Wang, Yingrong; Li, Wenhong; Liao, Qianjiahua

doi:10.1016/j.jtice.2016.09.012

Cited by 140 publications

(34 citation statements)

References 29 publications

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“…It indicates that the phosphate adsorption onto AgNPs-TAC was favorable. A similar trend was reported for the removal of Cr(VI) by magnetic biochar 42 and magnetite nanoparticles 43 .…”

Section: Effect Of Initial Phosphate Concentrationsupporting

confidence: 85%

Phosphate Adsorption by Silver Nanoparticles-Loaded Activated Carbon derived from Tea Residue

Trinh

Nguyen

Van

et al. 2020

Sci Rep

138

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Vu 6 , t. t. pham 7 , thi nu nguyen 8 , n. V. Quang 9 & X. c. nguyen 10,11* this study presents the removal of phosphate from aqueous solution using a new silver nanoparticlesloaded tea activated carbon (Agnps-tAc) material. in order to reduce costs, the tea activated carbon was produced from tea residue. Batch adsorption experiments were conducted to evaluate the effects of impregnation ratio of Agnps and tAc, pH solution, contact time, initial phosphate concentration and dose of Agnps-Ac on removing phosphate from aqueous solution. Results show that the best conditions for phosphate adsorption occurred at the impregnation ratio AgNPs/TAC of 3% w/w, pH 3, and contact time lasting 150 min. The maximum adsorption capacity of phosphate on AgNPs-TAC determined by the Langmuir model was 13.62 mg/g at an initial phosphate concentration of 30 mg/L. The adsorption isotherm of phosphate on AgNPs-TAC fits well with both the Langmuir and Sips models. The adsorption kinetics data were also described well by the pseudo-first-order and pseudo-secondorder models with high correlation coefficients of 0.978 and 0.966, respectively. The adsorption process was controlled by chemisorption through complexes and ligand exchange mechanisms. this study suggests that Agnps-tAc is a promising, low cost adsorbent for phosphate removal from aqueous solution.

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“…It indicates that the phosphate adsorption onto AgNPs-TAC was favorable. A similar trend was reported for the removal of Cr(VI) by magnetic biochar 42 and magnetite nanoparticles 43 .…”

Section: Effect Of Initial Phosphate Concentrationsupporting

confidence: 85%

Phosphate Adsorption by Silver Nanoparticles-Loaded Activated Carbon derived from Tea Residue

Trinh

Nguyen

Van

et al. 2020

Sci Rep

138

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“…• Co-precipitation, i.e., drying the residue of a biochar-metal solution after removing the supernatant, during which the transition metals are precipitated by NaOH or NH 4 OH [79,80].…”

Section: Physical Methodsmentioning

confidence: 99%

Engineered Biochar Production and Its Potential Benefits in a Closed-Loop Water-Reuse Agriculture System

Chan

Sharbatmaleki

et al. 2020

Water

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Biochar’s potential to remove various contaminants from aqueous solutions has been widely discussed. The rapid development of engineered biochar produced using different feedstock materials via various methods for wastewater treatment in recent years urges an up-to-date review on this topic. This article centers on summarizing state-of-the-art methods for engineered biochar production and discussing the multidimensional benefits of applying biochar for water reuse and soil amendment in a closed-loop agriculture system. Based on numerous recent articles (<5 years) published in journals indexed in the Web of Science, engineered biochar’s production methods, modification techniques, physicochemical properties, and performance in removing inorganic, organic, and emerging contaminants from wastewater are reviewed in this study. It is concluded that biochar-based technologies have great potential to be used for treating both point-source and diffuse-source wastewater in agricultural systems, thus decreasing water demand while improving crop yields. As biochar can be produced using crop residues and other biomass wastes, its on-farm production and subsequent applications in a closed-loop agriculture system will not only eliminate expensive transportation costs, but also create a circular flow of materials and energy that promotes additional environmental and economic benefits.

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“…In literature, many efforts have been paid to remove heavy metal ions from aqueous solution by magnetic biochars, which are fabricated from various biomass. For example, magnetic biochar from agricultural biomass, magnetic oak wood and oak bark fast pyrolysis biochars applied to eliminate lead and cadmium from wastewater (Yap et al, 2017) (Mohan et al, 2014), magnetic biochar prepared with Astragalus membranaceus residue used to remove chromium ions (Shang et al, 2016), arsenic(V) removal performed by magnetic gelatin modified biochar (Zhou et al, 2017). Until now, the application of sewage sludge biochar modifications remains limited.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Lead Distribution by Magnetic Sewage Sludge Biochar: Sorption Mechanisms and Bench Applications

Ifthikar

Wang

et al. 2017

Bioresource Technology

234

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Highly efficient magnetic sewage sludge biochar (MSSBC) discloses feasible fabrication process with lower production cost, superior adsorption capacity, usage of waste sewage sludge as resource, selected by external magnetic field and exceptional regeneration property. 2gL MSSBC exhibited a high adsorption capacity of 249.00mgg in 200ppmPb(II) and the lead-MSSBC equilibrium was achieved within one hour, owing to the existence of the copious active sites. The adsorption kinetics was well described by the pseudo-second-order model while the adsorption isotherm could be fitted by Langmuir model. Mechanism study demonstrated the adsorption involved electrostatic attraction, ion exchange, inner-sphere complexation and formation of co-precipitates at the surface of MSSBC. Additionally, adsorption performance maintained remarkable in a broad pH window. These outcomes demonstrated the promising waste resource utilization by a feasible approach that turns the solid waste of sewage sludge into biochar adsorbent with auspicious applications in elimination of Pb(II) from wastewater.

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Chromium removal using magnetic biochar derived from herb-residue

Cited by 140 publications

References 29 publications

Phosphate Adsorption by Silver Nanoparticles-Loaded Activated Carbon derived from Tea Residue

Phosphate Adsorption by Silver Nanoparticles-Loaded Activated Carbon derived from Tea Residue

Engineered Biochar Production and Its Potential Benefits in a Closed-Loop Water-Reuse Agriculture System

Highly Efficient Lead Distribution by Magnetic Sewage Sludge Biochar: Sorption Mechanisms and Bench Applications

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