Adsorption studies of Malachite green on 5-sulphosalicylic acid doped tetraethoxysilane (SATEOS) composite material

RSC Advances ◽  
2015 ◽  
Vol 5 (112) ◽  
pp. 92788-92798 ◽  
Author(s):  
Sozia Ahad ◽  
Nasarul Islam ◽  
Arshid Bashir ◽  
Suhail-ul Rehman ◽  
Altaf Hussain Pandith
Keyword(s):  
Aqueous Solution ◽  
Composite Material ◽  
Malachite Green ◽  
Batch Adsorption ◽  
Adsorption Studies ◽  
Sulphosalicylic Acid

Batch adsorption studies are reported for the removal of Malachite green from an aqueous solution using 5-sulphosalicylic acid doped tetraethoxysilane (SATEOS) composite material, prepared in our laboratory previously.

Preparation of copper aluminum-biochar composite as adsorbent of malachite green in aqueous solution

2020 ◽  
Author(s):  
Neza Rahayu Palapa ◽  
Tarmizi Taher ◽  
Risfidian Mohadi ◽  
Addy Rachmat ◽  
Aldes Lesbani
Keyword(s):  
Aqueous Solution ◽  
Composite Material ◽  
Malachite Green ◽  
Isotherm Models ◽  
Maximum Adsorption Capacity ◽  
X Ray ◽  
Pseudo Second Order ◽  
Edx Analyses ◽  
Copper Aluminum ◽  
Regeneration Study

Abstract In this work, CuAl/Biochar (BC) composite was prepared by the coprecipitation method. The materials were applied to remove malachite green in aqueous solution. These materials were characterized using XRD, FTIR, BET and SEM-EDX analyses. The composite material was confirmed by X-ray diffractograms with reflection (002) at 24o and the appearance of new peaks at 1095 cm -1 . The BET result of CuAl/BC composite has larger surface area is 168 m 2 /g than 46 m 2 /g for LDH. The morphologies of composite materials show agglomeration and micro particle size. The result of the adsorption study indicated the composite material follows pseudo-second-order (PSO) and Langmuir isotherm models. The maximum adsorption capacity of malachite green using CuAl/BC uptake is 164.316 mg/g. The thermodynamic analysis indicates that the malachite green adsorption is spontaneous, endothermic. Regeneration study of adsorbent CuAl/BC composite shows after four times reused, it still has high removal efficiency at 89%.

scholarly journals Adsorption of Malachite Green Dye onto Mesoporous Natural Inorganic Clays: Their Equilibrium Isotherm and Kinetics Studies

Water ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 965
Author(s):  
Sami Ullah ◽  
Altaf Ur Ur Rahman ◽  
Fida Ullah ◽  
Abdur Rashid ◽  
Tausif Arshad ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Surface Area ◽  
Malachite Green ◽  
Langmuir Isotherm ◽  
Adsorption Behavior ◽  
Area Measurement ◽  
Batch Adsorption ◽  
Order Kinetic ◽  
Operational Parameters ◽  
X Ray

Contamination of water with organic dyes is a major environmental concern as it causes serious life-threatening environmental problems. The present research was designed to evaluate the potential of three different natural inorganic clays (NICs) i.e., Pakistani bentonite clay (PB), bentonite purchased from Alfa Aesar (BT), and Turkish red mud (RM) for malachite green (MG) dye removal from an aqueous solution. Various analytical techniques, namely X-ray fluorescence spectrometry (XRF), X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), Brunauer–Emmett–Teller surface area measurement (BET), and thermogravimetric analysis (TGA), were used to investigate the physicochemical properties of the NICs samples. The effect of adsorption operational parameters such as contact time, aqueous phase pH, dye concentration, and amount of NICs on the adsorption behavior of MG onto NICs samples were investigated under the batch adsorption system. The equilibrium and kinetic inspection reflected the best description of MG adsorption behavior by the Langmuir isotherm model and pseudo-first-order kinetic model, respectively. The results indicated that the adsorption was favorable at higher pH. The maximum adsorption capacities calculated by Langmuir isotherm for PB, BT, and RM were found to be 243.90 mg/g, 188.68 mg/g, and 172.41 mg/g, respectively. It can be concluded that natural inorganic clays with a higher surface area can be used as an effective adsorbent material to remove the MG dye from an aqueous solution.

scholarly journals Adsorption Studies of Chromium by Using Low Cost Adsorbents

Our Nature ◽  
2013 ◽  
Vol 11 (1) ◽  
pp. 11-16 ◽  
Author(s):  
N. Gandhi ◽  
D. Sirisha ◽  
K.B. Chandra Sekhar
Keyword(s):  
Heavy Metals ◽  
Aqueous Solution ◽  
Contact Time ◽  
Low Cost ◽  
Water Bodies ◽  
Batch Adsorption ◽  
Toxic Heavy Metals ◽  
Adsorption Studies ◽  
Chromium Vi ◽  
Aqueous Streams

The presence of toxic heavy metals such as chromium (VI) contaminants in aqueous streams, arising from the discharge of untreated metal containing effluents into water bodies, is one of the most important environmental problems. Adsorption is one of the effective techniques for chromium (VI) removal from wastewater. In the present study, adsorbent was prepared from low cost adsorbents and studies were carried out for chromium (VI) removal. Batch adsorption studies demonstrated that the adsorbents had significant capacity to adsorb the chromium from aqueous solution. It was found that the adsorption increased with increase in contact time and adsorbent dosage. An attempt was made to study mixed algae as an adsorbent for removal of chromium (VI).DOI: http://dx.doi.org/10.3126/on.v11i1.8238 Our Nature Vol.11(1) 2013: 11-16?

Batch adsorption studies on the removal of malachite green from water by chemically modifiedAzolla pinnata

2015 ◽  
Vol 57 (31) ◽  
pp. 14632-14646 ◽  
Author(s):  
Muhammad Raziq Rahimi Kooh ◽  
Linda B.L. Lim ◽  
Lee Hoon Lim ◽  
J.M.R.S. Bandara
Keyword(s):  
Malachite Green ◽  
Batch Adsorption ◽  
Adsorption Studies
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