Remediation of Arsenic Contaminated Water by a Novel Carboxymethyl Cellulose Bentonite Adsorbent

Abstract

Suitability of bentonite clay modified with sodium carboxymethyl cellulose (Na-CMC) for the removal of arsenic(III) ions from aqueous solution was tested in batch adsorption studies and complemented by theoretical modeling with Langmuir, Freundlich and Temkin isotherm models. The effects of various factors, such as the initial adsorbate concentrations, pH, and temperature of the solutions were investigated in series of experiments. FTIR analysis was used to detect functional groups typical for cellulose and bentonite. Scanning electron microscope was used to analyze the surface morphology of the composites. It was established that the removal process was fast in the beginning and adsorption equilibrium was attained in around 20 minutes with good fittings to both Langmuir and Freundlich model. Maximum adsorption capacity (Qmax) obtained from experiments was 9.4 mg/g. No influence of solution pH and temperature on the sorption was noticed. The series of conducted experiments showed that synthesized composites are suitable for the removal of arsenic from wastewaters by adsorption as efficient and low-cost technique.

Waste Materials as a Resource for Production of CMC Superabsorbent Hydrogel for Sustainable Agriculture

“…It has a huge range of different applications in different products and processes, such as oil drilling [ 60 ], detergents, food exploration, paper, textiles, pharmaceuticals [ 61 ] and the agricultural industry [ 13 ]. Recently, CMC has found new interest in advanced fields such as tissue engineering [ 62 ], dye and lithium ion batteries [ 63 ] and the adsorption of heavy metals [ 64 , 65 , 66 ].…”

Study of Synthesis and Performance of Clay and Clay-Manganese Monoliths for Mercury Ion Removal from Water

“…Figure 2 and Table 1 display the Fourier-transform infrared spectra of calcined CM and CMM. At 3624 cm -1 , two different peaks in the spectra correspond to OH stretching vibrations originating from Al-Al-OH stresses [27]. The broad peak at 3434 cm -1 to 3400 cm -1 corresponds to the OH stretching of H-bonded water [28].…”

Preparation of PVDF/FMBO composite electrospun nanofiber for effective arsenate removal from water

“…Fortunately, fabrication of new nano sized adsorbents based composite adsorbents seems to be an effective approach to respond to all the above technical problems. 25 To promote the use of metal oxides adsorbent nanoparticles in actual purication processes, many researchers have focused on the impregnation of nanoparticles adsorbent on some host medias such as bentonite, 26 zeolite, 27 chitosan, 28 diatomite, 29 cellulose, 30 graphene oxide 31 and also porous polymers. 32 In recent decades, electrospun nanobers due to their unique functional properties such as porous structure, large surface area and high mechanical strength have obtained much interest for use in water purication processes.…”