Study of PAN Fiber and Iron ore Adsorbents for Arsenic Removal

Abstract

The main idea to conduct this study is the treatment of hazardous arsenite (As+3) and arsenate (As+5)from water by two efficient adsorbetns i.e. polyacrylonitrile fiber (organic) and iron ore (inorganic). Polyacrylonitrile (PAN) fibers were chemically modified prior to loading iron using a solution of diethylenetriamine and aluminum chloride hexahydrate. The characterization of PAN fibers was performed through FTIR spectroscopy, which shows the binding of functional groups on PAN fibers surfaces. Atomic absorption spectrometer (AAS) was used to analyze arsenic concentration in samples. The impact of pH, dosage, shaking (contact) time and shaking speed was studied and parameters were optimized for further study. The highest adsorption of 98% is exhibited by modified PAN fiber for As+5 while for As+3 removal is 80%. Modified PAN also showed higher adsorption capacity of 42×103μg/g for As+5 which is better than the As+3 adsorption capacity 33×103 μg/g. Overall results demonstrated that MPAN adsorbent is better than the iron ore adsorbent for the treatment of both As+3 and As+5. Comparative studies of PAN Fiber and iron ore adsorbents revealed that PAN fibers had better adsorption properties than iron ore for As+3 and As+5 in terms of percentage removal and capacity.

Potential of Mangifera indica activated carbon for removal of chromium and iron

“…These systems are commonly founded on physicochemical collaborations between metal particles and utilitarian gatherings present on the cell surface, which incorporates ionexchange, complexion, electrostatic fascination, and micro precipitation (Mack et al, 2008). Bhatti et al (2020) proposed the removal of arsenic (as As 3+ and As 5+ ) by using polyacrylonitrile (PAN) fibre and iron ore as adsorbent. This study revealed that that the modified PAN had better adsorption efficiency than the iron ore adsorbent for the treatment of both As 3+ and As 5+ upon adsorption study.…”

Efficient Removal of Hexavalent Chromium from an Aquatic System Using Nanoscale Zero-Valent Iron Supported by Ramie Biochar

“…Markedly, the hydroxyl groups of RBC600-nZVI were ominously augmented as compared with the RBC600, which supported relatively more adsorption pockets for Cr(VI) adsorption [31]. There was a sharp peak at 2924 cm −1 which contributed to C-H stretching vibration (-CH 3 or -CH 2 group) [30,32].…”

“…An absorption peak obviously occurred at 3440 cm −1 , which ranged between 3200 and 3500 cm −1 , representing the intermolecular stretching of the hydrogen (H) bonding and thereby representing the peak of the hydroxyl group [30]. Markedly, the hydroxyl groups of RBC600-nZVI were ominously augmented as compared with the RBC600, which supported relatively more adsorption pockets for Cr(VI) adsorption [31]. There was a sharp peak at 2924 cm −1 which contributed to C-H stretching vibration (-CH3 or -CH2 group) [30,32].…”

TiO2 Nanoparticles as Bifunctional Adsorbent/Photocatalyst for Degradation of Effluent from Local Dairy in Telangana

“…The factors such as, restrict pH range, swift organic-load variations, and the effluent's physical-chemical characteristics check the degradation efficiency of the biological processes that have been widely used for dairy wastewater treatment [5,6]. Adsorption is a promising technique because of its ease of use, increased proficiency, low-cost requirements, and great reproducibility [7]. Furthermore, because the process is usually reversible, the adsorbents can be readily regenerated and reused [8].…”