Investigation on adsorption behaviors of heavy metal ions (Cd2+, Cr3+, Hg2+ and Pb2+) through low-cost/active manganese dioxide-modified magnetic biochar derived from palm kernel cake residue

2020 ◽  
Vol 8 (6) ◽  
pp. 104467
Author(s):  
Panya Maneechakr ◽  
Suthep Mongkollertlop
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Manganese Dioxide ◽  
Heavy Metal Ions ◽  
Low Cost ◽  
Palm Kernel ◽  
Palm Kernel Cake ◽  
Magnetic Biochar ◽  
Adsorption Behaviors

scholarly journals Microwave-assisted conversion of palm kernel shell biomass waste to photoluminescent carbon dots

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Wei Lun Ang ◽  
Cheldclos A. L. Boon Mee ◽  
Nonni Soraya Sambudi ◽  
Abdul Wahab Mohammad ◽  
Choe Peng Leo ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Carbon Dots ◽  
Heavy Metal Ions ◽  
Low Cost ◽  
Palm Kernel ◽  
Photoluminescence Intensity ◽  
Biomass Waste ◽  
Palm Kernel Shell ◽  
Irradiation Period

AbstractIn the present work, palm kernel shell (PKS) biomass waste has been used as a low-cost and easily available precursor to prepare carbon dots (CDs) via microwave irradiation method. The impacts of the reacting medium: water and diethylene glycol (DEG), and irradiation period, as well as the presence of chitosan on the CDs properties, have been investigated. The synthesized CDs were characterized by several physical and optical analyses. The performance of the CDs in terms of bacteria cell imaging and copper (II) ions sensing and removal were also explored. All the CDs possessed a size of 6–7 nm in diameter and the presence of hydroxyl and alkene functional groups indicated the successful transformation of PKS into CDs with carbon core consisting of C = C elementary unit. The highest quantum yield (44.0%) obtained was from the CDs synthesised with DEG as the reacting medium at irradiation period of 1 min. It was postulated that the high boiling point of DEG resulted in a complete carbonisation of PKS into CDs. Subsequently, the absorbance intensity and photoluminescence intensity were also much higher compared to other precursor formulation. All the CDs fluoresced in the bacteria culture, and fluorescence quenching occurred in the presence of heavy metal ions. These showed the potential of CDs synthesised from PKS could be used for cellular imaging and detection as well as removal of heavy metal ions.

scholarly journals Rapid removal of heavy metal ions from aqueous solutions by low cost adsorbents

2012 ◽  
Vol 12 (2/3/4) ◽  
pp. 318 ◽  
Author(s):  
Ali Ahmadpour ◽  
Tahereh Rohani Bastami ◽  
Masumeh Tahmasbi ◽  
Mohammad Zabihi
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Low Cost ◽  
Rapid Removal

scholarly journals Research on the Adsorption Behavior of Heavy Metal Ions by Porous Material Prepared with Silicate Tailings

Minerals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 291 ◽  
Author(s):  
Dongxiao Ouyang ◽  
Yuting Zhuo ◽  
Liang Hu ◽  
Qiang Zeng ◽  
Yuehua Hu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Porous Material ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Low Cost ◽  
Order Kinetic ◽  
X Ray Diffraction ◽  
New Thought ◽  
Adsorption Models ◽  
Kinetics Of

Tailings generated from mineral processing have attracted worldwide concerns due to creating serious environmental pollution. In this work, porous adsorbents were prepared as a porous block by using silicate tailings, which can adsorb heavy metal ions from the solution and are easy to separate. The synthesized silicate porous material (SPM) was characterized by X-ray diffraction (XRD), Brunner–Emmet–Teller (BET), and scanning electron microscope (SEM). The material presented a surface area of 3.40 m2⸱g−1, a porosity of 54%, and the compressive strength of 0.6 MPa. The maximum adsorption capacities of Pb2+, Cd2+, and Cu2+ by SPM were 44.83 mg·g−1, 35.36 mg·g−1, and 32.26 mg·g−1, respectively. The experimental data were fitted well by the Freundlich and Langmuir adsorption models. The kinetics of the adsorption process were fitted well by the pseudo-first order kinetic equation. These results show that the porous materials prepared with silicate tailings could act as an effective and low-cost adsorbent for the removal of heavy metal ions from wastewater. This study may provide a new thought on the high-value utilization of tailing for alleviating environmental pressure.

scholarly journals Enhanced removal of heavy metal ions from aqueous solution using manganese dioxide-loaded biochar: Behavior and mechanism

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Haipeng Zhang ◽  
Fangfang Xu ◽  
Jinyuan Xue ◽  
Shiyong Chen ◽  
Juanjuan Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Manganese Dioxide ◽  
Heavy Metal Ions

Study on the Performance of the Ionic Liquids [Emim]CH3SO3 and [Emim]PF6 to Prepare the Biosensor of the Detection of Heavy Metals in Seawater

2017 ◽  
Vol 20 (1) ◽  
pp. 013-020 ◽  
Author(s):  
Xuhui Ma ◽  
Shipeng Zhao ◽  
Shuping Zhang
Keyword(s):  
Heavy Metal ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Electrochemical Sensors ◽  
Low Cost ◽  
Sensor Applications ◽  
Electrochemical Window ◽  
Significant Difference

Electrochemical sensors can detect the heavy metal ions in seawater quickly, conveniently and accurately with the advantages such as the fast detection speed, the simple operability and the low cost. The ionic liquid [Emim]CH3SO3 showed excellent electrochemical performance and could meet the initial application requirements as electrochemical sensors. The characters of the ionic liquids [Emim]CH3SO3 and [Emim]PF6 which include IR, LC-MS, conductivity, electrochemical window and viscosity were detected. The influ-ence of trace impurity on the conductivity of the ionic liquids was investigated. Results suggested that the conductivity of the ionic liquids increased with the concentration of the added organic solvents. In addition, though the conductivity of the ionic liquids increased with temperature, there is no significant difference in the influence of the same impurity at varying temperatures. Muti Walls Carbon Nanotubes (MWCNTs) are appropriate materials which are commonly used materials for electrochemical sensor applications. The effect of theImidaz-olium-based ionic liquids on the performance of the conductivity of the MWCNTs was studied. It was found that Ionic liquid is an excellent extraction agent for metal ions and its presence in the sensor system improves significantly the detection of heavy metal ions.

Biomass based hydrogel as an adsorbent for the fast removal of heavy metal ions from aqueous solutions

2017 ◽  
Vol 5 (7) ◽  
pp. 3434-3446 ◽  
Author(s):  
Mingyue Zhang ◽  
Lihua Song ◽  
Haifeng Jiang ◽  
Shu Li ◽  
Yifei Shao ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Acrylic Acid ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Low Cost ◽  
Waste Biomass ◽  
One Step ◽  
Fast Removal ◽  
Poly Acrylic Acid

In order to achieve the reutilization of waste biomass soybean dregs, a low-cost hydrogel, soybean dregs–poly(acrylic acid) (SESD–PAA) was prepared through a one-step reaction.

scholarly journals Carbon nanotubes/Al2O3 composite derived from catalytic reforming of the pyrolysis volatiles of the mixture of polyethylene and lignin for highly-efficient removal of Pb(ii)

RSC Advances ◽  
2021 ◽  
Vol 11 (60) ◽  
pp. 37851-37865
Author(s):  
Zhanghong Wang ◽  
Kun Qin ◽  
Zhikang Wang ◽  
Dekui Shen ◽  
Chunfei Wu
Keyword(s):  
Carbon Nanotubes ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Carbon Materials ◽  
Low Cost ◽  
Efficient Removal ◽  
Catalytic Reforming ◽  
Al2o3 Composite ◽  
High Efficient

The coked catalysts derived from catalytic reforming of the pyrolysis volatiles of polyethylene, lignin and their mixture were developed as low-cost and high-efficient carbon materials-containing composites to remove heavy metal ions from water.

scholarly journals Oyster Shell as a Low-Cost Adsorbent for Removing Heavy Metal Ions from Wastewater

2019 ◽  
Vol 28 (4) ◽  
pp. 2949-2959 ◽  
Author(s):  
Xin Xu ◽  
Xiaofeng Liu ◽  
Myounghak Oh ◽  
Junboum Park
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Low Cost ◽  
Oyster Shell
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