Paper waste sludge derived-hydrochar modified by iron (III) chloride for effective removal of Cr(VI) from aqueous solution: Kinetic and isotherm studies

Nguyen, Lan Huong; Van, Huu Tap; Nguyen, Quang Trung; Nguyen, Thu Huong; Nguyen, Thi Bich Lien; Nguyen, Van Quang; Bui, Thu Uyen; Sy, Hung Le

doi:10.1016/j.jwpe.2020.101877

Cited by 28 publications

(10 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The FTIR analysis of OPB is exhibited in Figure 3. The broad peaks near 3400 cm -1 and 2900 cm -1 were identified by -OH stretching and -NH bending vibration [9,19] 5 Adsorption Science & Technology to vibrations of C=O and C-OH from the alcohol, phenol, ether, and lactone groups in OP, and these oxygen-containing groups (like -OCH 3 ) are mainly derived from cellulose [20]. The πelectrons provided by these structures could contribute to the adsorption [13,17].…”

Section: Resultsmentioning

confidence: 99%

Development of Efficient Biochar Produced from Orange Peel for Effective La(III) and Y(III) Adsorption

Liu,

Feng,

Rao

et al. 2023

Adsorption Science & Technology

View full text Add to dashboard Cite

In this work, orange peel (OP) was used as raw material to produce biochar. The effect of oxygen-limited carbonization temperature (200, 400, and 600°C) on the physicochemical properties and adsorption behavior of orange peel biochar (OPB) toward La(III) and Y(III) in aqueous media was studied. The prepared OPB samples were characterized by SEM, FTIR, and XRD. The experimental results exhibited effective removal of La(III) and Y(III) from aqueous solution by OPB. The carbonization promoted the pore development, and the adsorption process occurred rapidly. The main chemisorption of La(III) and Y(III) on OPB was analyzed by the Langmuir and pseudo-second-order kinetic model, and the participations of electrostatic attraction, exchange, and hydroxyl and carboxyl complexation in OPB were confirmed. The Langmuir maximum capacity of 55.57 mg/g and 31.49 mg/g was obtained at the optimum pH range of 4~6 and the OPB dosage of 1 g/L and 2 g/L for La(III) and Y(III). The efficient orange peel biochar with high adsorption performance can be obtained by considering suitable carbonization temperature.

show abstract

Section: Resultsmentioning

confidence: 99%

Development of Efficient Biochar Produced from Orange Peel for Effective La(III) and Y(III) Adsorption

Liu,

Feng,

Rao

et al. 2023

Adsorption Science & Technology

View full text Add to dashboard Cite

show abstract

“…The influence of solution pH on Cr(VI) adsorption by PG and PG-B was explored, and strong pH dependence is presented in Figure 3 a,b. The solution pH value, as one of the essential parameters, can not only affect the charge and ion conditions of the material surface but also dominate the Cr(VI) form in solution, causing the difference in chemical behavior of Cr(VI) such as coordination, complexation, and electrostatic interaction in the system with a changed pH value [ 42 , 43 ]. Specifically, the hydrolysis of Cr(VI) primarily produced CrO 4 2− , Cr 2 O 7 2− , and HCrO 4 2− , where the hydrolysis product was largely HCrO 4 2− and Cr 2 O 7 2− at pH 2~6 while CrO 4 2− dominated when pH > 6 [ 44 ].…”

Section: Resultsmentioning

confidence: 99%

Enhanced Chromium (VI) Adsorption onto Waste Pomegranate-Peel-Derived Biochar for Wastewater Treatment: Performance and Mechanism

Chen

Yang

Abbas

2023

Toxics

View full text Add to dashboard Cite

Surface chemical modification allows for the rational construction of biochar with desirable structures and functionalities for environment purification. Fruit-peel-derived adsorbing material has been well studied in the adsorption of heavy-metal removal due to its abundance and non-toxicity, but its precise mechanism in removing chromium-containing pollutants remains unclear. Herein, we explored the potential application of engineered biochar prepared from fruit waste via chemical modification to remove chromium (Cr) from an aqueous solution. By synthesizing two types of agricultural residue-derived adsorbents, including pomegranate peel adsorbent (PG) and its modified product, pomegranate-peel-derived biochar (PG-B), via chemical and thermal decomposition methods, we elucidated the adsorption property of Cr(VI) on the studied materials and identified the cation retention mechanism of the adsorption process. Batch experiments and varied characterizations demonstrated that superior activity was exhibited in PG-B, which can contribute to the porous surfaces caused by pyrolysis and effective active sites resulting from alkalization. The highest Cr(VI) adsorption capacity is obtained at pH 4, a dosage of 6.25 g L−1, and a contact time of 30 min. The maximum adsorption efficiency of 90.50% in a short period (30 min) was obtained on PG-B, while PG reached a removal performance of 78.01% at 60 min. The results from kinetic and isotherm models suggested that monolayer chemisorption dominated the adsorption process. The Langmuir maximum adsorption capacity is 16.23 mg g−1. This study shortened the adsorption equilibrium time of pomegranate-based biosorbents and presents positive significance in designing and optimizing waste fruit-peel-derived adsorption materials for water purification.

show abstract

“…9 In the adsorption of heavy metals, especially the adsorption of cations (such as copper and cadmium), mineral ion exchange was generally dominant in the inorganic components. 10,11 At the same time, solid waste rich in functional groups can also have excellent affinity for heavy metal ions through chelation. 12,13 In addition, some studies have shown that antibiotic ligands with strong coordination groups (such as carboxyl, amino, and phenolic hydroxyl) tend to coordinate with metal active sites to form antibiotic metal complexes to remove antibiotics.…”

Section: Introductionmentioning

confidence: 99%

“…. In the adsorption of heavy metals, especially the adsorption of cations (such as copper and cadmium), mineral ion exchange was generally dominant in the inorganic components. , At the same time, solid waste rich in functional groups can also have excellent affinity for heavy metal ions through chelation. , In addition, some studies have shown that antibiotic ligands with strong coordination groups (such as carboxyl, amino, and phenolic hydroxyl) tend to coordinate with metal active sites to form antibiotic metal complexes to remove antibiotics. , Meanwhile, the interaction between antibiotics and functional groups and the mechanism of adsorption-metal bridging antibiotics will purify complex wastewater. For these solid waste residues lacking active sites, some people have adopted metal modification to achieve similar results.…”

Section: Introductionmentioning

confidence: 99%

Efficient Anchoring of Cu(II)–Tetracycline Complex in Paper Mill Sludge Biochar-Limited Nanospace

Zhu,

Guo,

Guan

et al. 2023

ACS EST Water

View full text Add to dashboard Cite

Efficient electron transfer between pollutants and the adsorbent is the key to low-cost purification of complex water. In this work, a paper mill sludge-based porous biochar (PSC) containing many intrinsic metal active sites, carbon defects, and oxygen vacancies can accelerate the electron-transfer process and act as a trap to efficiently remove heavy metals Cu and tetracyclines in complex water bodies. The results show that in a single Cu(II)/tetracycline hydrochloride (TC) system, Fe sites had greater electronegativity and thus were easier to exchange with Cu(II). Furthermore, the presence of Ca species caused lots of carbon defects, which accelerated the surface functional group formation of PSC and thus makes TC be quickly anchored. Notably, in the Cu(II)−TC complex system, the removal efficiency of Cu(II) and TC was significantly increased. XRD confirmed that the increased Ca−O was the primary cause of carbon defects. Therefore, the presence of carbon defects and the fast electron transfer were the essential reasons for the removal of complex Cu(II)−TC by PSC. This study rationally clarified the inherent mechanism and the potential or enhancement orientation for removing Cu(II)−TC pollutants by low-cost paper mill sludge biochar.

show abstract

Paper waste sludge derived-hydrochar modified by iron (III) chloride for effective removal of Cr(VI) from aqueous solution: Kinetic and isotherm studies

Cited by 28 publications

References 57 publications

Development of Efficient Biochar Produced from Orange Peel for Effective La(III) and Y(III) Adsorption

Development of Efficient Biochar Produced from Orange Peel for Effective La(III) and Y(III) Adsorption

Enhanced Chromium (VI) Adsorption onto Waste Pomegranate-Peel-Derived Biochar for Wastewater Treatment: Performance and Mechanism

Efficient Anchoring of Cu(II)–Tetracycline Complex in Paper Mill Sludge Biochar-Limited Nanospace

Contact Info

Product

Resources

About