Novel NS Modified Cellulose: Synthesis, Spectroscopic Characterization and Adsorption Studies of Cu2+, Hg2+ and Pb2+ From Environmental Water Samples

Akl, Magda A; Ismail, M.; Hashem, Mohamed A.; Ali, Dina A.

doi:10.21203/rs.3.rs-678126/v1

Cited by 3 publications

(1 citation statement)

References 33 publications

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“…Among all the toxins, heavy metals contamination has gotten a great attention to environmental chemists due to their toxic nature. Heavy metals are usually present in trace amounts in natural waters but numerous of them are poisonous indeed at very low concentrations [4] .…”

Section: Introductionmentioning

confidence: 99%

Extraction and modification of cellulose from Artocarpus heterophyllus for biosorption of lead ion from aqueous solution as cost effective biosorbent

Turunesh,

Zewudie,

Dereba Workineh Seboka

2023

Appl. Chem. Eng.

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The heavy metals found in contaminated waters are dangerous for the environment and human health, so it is necessary to seek and apply techniques to remove these pollutants, using adsorption techniques with natural biopolymers as cost effective biosorbent. Since large amounts of Jackfruit (Artocarpus heterophyllus fruit) waste part are abandoned after the pulp used around Tepi areas, the possibility of developing value-added products from them is interesting innovation. In this work, cellulose fiber was extracted from Artocarpus heterophyllus fruit waste part and modified with Isopropyl alcohol groups to produce which were then used as Lead metal ion adsorbents. The modified cellulose was characterized by several techniques including Fourier transform infrared spectra (FTIR), scanning electron microscope (SEM), and thermogravimetric analysis (TGA). This modified cellulose was used as adsorbents for adsorption studies of heavy metal ions (Pb2+) within batch adsorption systems. A solution of lead ion (Pb2+) was used as artificial wastewater for the purpose of studying biosorption efficiencies. The biosorption efficiencies of modified cellulose were studied by using four adsorption parameters. The optimum biosorption of modified cellulose at 25 °C, were found to be 94.2%, 76.12%, 82.54%, and 90.13%, of Pb2+ for the adsorption parameter; biosorbent dosage, contact time, Pb (II) concentration, and pH respectively. The biosorption kinetics behaviour of modified cellulose for Pb2+ fitted well with a pseudo-second-order model with correlation coefficient of 0.9975. The biosorption isotherm behaviour was well described using the Langmuir biosorption isotherm model with higher correlation coefficient of 0.9935. The reusability and desorption study of modified cellulose shows that it can be reused 2 to 4 times and after 5th cycles the desorption was significantly decreased. This study showed that the modified cellulosic adsorbents made from (Artocarpus heterophyllus fruit) were able to efficiently adsorb metal ions from aqueous solution.

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Section: Introductionmentioning

confidence: 99%

Extraction and modification of cellulose from Artocarpus heterophyllus for biosorption of lead ion from aqueous solution as cost effective biosorbent

Turunesh,

Zewudie,

Dereba Workineh Seboka

2023

Appl. Chem. Eng.

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Nanocellulose-stabilized nanocomposites for effective Hg(II) removal and detection: a comprehensive review

Chinnappa,

Bai,

Srinivasan

2024

Environ Sci Pollut Res

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Aminothiol supported dialdehyde cellulose for efficient and selective removal of Hg(II) from aquatic solutions

Mostafa,

Gaith,

Akl

2023

Sci Rep

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The increasingly serious problem of mercury pollution has caused wide concern, and exploring adsorbent materials with high adsorption capacity is a simple and effective approach to address this concern. In the recent study, dialdehyde cellulose (DAC), cyanoacetohydrazide (CAH), and carbon disulfide (CS2) are used as raw materials for the (DAC@CAH@SK2) preparation material through the three-steps method. By utilizing the following characterization techniques; thermogravimetric analysis (TGA), N2 adsorption–desorption isotherm (BET), elemental analysis, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD), 1HNMR and Energy Dispersive X-ray Spectroscopy (EDS) of DAC@CAH@SK2 composite. The point of zero charge (pHPZC) for the prepared DAC@CAH@SK2 also was examined. From the batch experiments, the optimum conditions were found to be pH (5–8), an Hg2+ concentration of 150 mg/L, a DAC@CAH@SK2 dose of 0.01 g, and a contact time of 180 min with a maximum adsorption quantity of 139.6 mg/g. The process of Hg2+ adsorption on the DAC@CAH@SK2 material was spontaneous exothermic, monolayer chemisorption, and well-fitted to Langmuir and pseudo-2nd-order models. The DAC@CAH@SK2 selectivity towards the Hg2+ was examined by investigating the interfering metal ions effect. The DAC@CAH@SK2 was successfully applied for the Hg2+ removal from synthetic effluents and real wastewater samples with a recovery % exceeding 95%. The prepared DAC@CAH@SK2 was regenerated using a mixture of EDTA and thiourea. Also, FT-IR analysis indicates that the synergistic complexation of N and S atoms on DAC@CAH@SK2 with Hg(II) is an essential factor leading to the high adsorption capacity.

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Novel NS Modified Cellulose: Synthesis, Spectroscopic Characterization and Adsorption Studies of Cu2+, Hg2+ and Pb2+ From Environmental Water Samples

Cited by 3 publications

References 33 publications

Extraction and modification of cellulose from Artocarpus heterophyllus for biosorption of lead ion from aqueous solution as cost effective biosorbent

Extraction and modification of cellulose from Artocarpus heterophyllus for biosorption of lead ion from aqueous solution as cost effective biosorbent

Nanocellulose-stabilized nanocomposites for effective Hg(II) removal and detection: a comprehensive review

Aminothiol supported dialdehyde cellulose for efficient and selective removal of Hg(II) from aquatic solutions

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