Adsorption of Zinc Ions in Water on Natural and Treated Clay

This study investigates the capability of Thuja occidentalis leaves carbon powder (TOLC) as a viable adsorbent for the expulsion of chromium(VI) from aqueous solutions. By batch mode, the removal percentage of Cr(VI) is observed to be pH perceptive and furthermore relies upon the time of equilibration, amount of the TOLC adsorbent and Cr(VI) concentration. TOLC adsorbent before and after adsorption of Cr(VI) was characterized with FTIR, SEM and EDX. Adsorption isotherm results divulge that the Langmuir model was a better fit. The kinetic studies divulge that the pseudosecond-order model was the best fit. TOLC adsorbent can be easily regenerated and utilised for several adsorption/ desorption cycles.

Section: Introductionmentioning

confidence: 99%

Chromium(VI) Removal Using Activated Thuja Occidentalis Leaves Carbon Powder – Adsorption Isotherms and Kinetic Studies

Rao¹,

Rao²,

Krishna³

2020

“…Among these sorbents are activated carbon, 4 magnetically susceptible carbon sorbents, 5 mesoporous silica nanoparticles, 6 anionite, 7 and natural minerals. 8,9 Adsorbents based on natural minerals have become the center of research in this area due to their advantages, such as non-toxicity, availability, and low cost. In addition to copper, they are used to purify aqueous solutions from chromium, 10 zinc, and nickel ions 11 and several other contaminants.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Isotherm Adsorption Modelling for Copper Removal from Wastewater by Natural and Modified Clinoptilolite and Glauconite

Konanets,

Stepova

2024

“…The varieties of the dyes are: acidic, reactive, basic, azo, and diazo [1]. These dyes are non-biodegradable due to their toxic nature [2], the elimination of pollutants and colored effluents from wastewater is important for protecting public health and the environment [3]. There are many traditional techniques applied in the dye removal such as coagulation, flocculation, photo degradation, sedimentation [4], ion exchange, and membrane filter processes such as micro-and ultra-filtration and reverse osmosis.…”

Section: Introductionmentioning

confidence: 99%

Cellulose Acetate Hollow Fiber Membranes from Banana Stem Fibers Coated by TiO2 for Degradation of Waste Textile Dye

Wafiroh¹,

Abdulloh²,

Widati³

2021

Cellulose acetate hollow fiber membrane from banana stem fibers coated by TiO2 (CAHFMT) was prepared and characterized as an alternative material for degradation of waste textile dye. Its applicability was demonstrated by mechanical properties, FTIR, SEM, thermal resistance, performance, and degradation efficiency. Cellulose acetate (CA) was synthesized from banana stem fibers by swelling stage, acetylation reaction, and hydrolysis reaction. CA was modified using TiO2 of various concentrations. CAHFMT with 22 % w/v dope concentration has the optimum mechanical properties (stress, strain and Young’s modulus), as well as hydrophilic properties. The performances of CAHFMT with Congo red were determined. The SEM results showed that the membrane had rigid pores. Moreover, this research stated that CAHFMT could be a solution to overcome economical and effective problems.