Top 10 oaskpublishers.com Wettbewerber

gjesm.net

BACKGROUND AND OBJECTIVES: Heavy metal contamination from industrial wastewater remains a global concern. Biomass waste still contains active compounds that can be processed into useful materials. The study objectives were to address both problems by synthesizing composite hydrogels from pineapple crowns and avocado peels for the simultaneous adsorption of lead(II), cadmium(II), and copper(II) from aqueous solutions.METHODS: Composite hydrogels were synthesized using free radical polymerization using pineapple crown biochar and avocado peel biochar as grafting substrates. The material was characterized using Fourier transform infrared spectroscopy, scanning electron microscopy-energy dispersive x-ray spectroscopy, Brunauer-Emmett-Teller, and hardness testing to determine its physicochemical properties. The adsorption process uses a batch system in a solution containing lead, cadmium, and copper ions simultaneously at potential 4 to 6 and a temperature of 26 degrees Celsius with a speed of 125 revolutions per minute for an operating time of 300 minutes. The kinetics of adsorption were evaluated using the pseudo-first-order and pseudo-second-order models, and the model fit was based on the coefficient of determination value and the correlation.FINDINGS: Both hydrogels demonstrated mesoporous structures with high specific surface areas (square meters per gram) of 767.61 for pineapple crown composite hydrogel and 802.41 for avocado peel composite hydrogel, along with rich functional groups such as hydroxyl, carboxyl, alkyl, nitrile, and carbonyl groups that facilitate chemisorption. The avocado peel composite hydrogel showed the highest adsorption capacity (milligrams per gram), which was 0.56 for lead, 0.43 for cadmium, and 0.41 for copper. These results were better than the performance of the pineapple crown composite hydrogel. Adsorption kinetics were well described by the pseudo-second-order model, with coefficient of determination values from 0.91 to 0.98 for compo

jbes.scholasticahq.com

The Journal of Business and Economic Studies is the peer-reviewed academic journal of the Northeast Business and Economics Association

maplespub.com

Maples Scientific Publisher brings together the best original research, analyses, reviews, news updates, practice updates, and thought-provoking editorials.

henrystewartpublications.com

Terms & Conditions Visa Credit & Debit payments, Mastercard payments, Maestro payments, American Express payments and JCB payments are all supported by Worldpay. *Subscribers requiring university-wide access or a multi-user licence should contact the Publisher. **Only subscribers in North America may pay the dollar rate. All other subscribers will be charged in Sterling. ***To be completed […]

ijaresm.com

publish paper in 24 hours, ugc care journal, ugc approved, fast publication in india, low price, international research journal in usd 50 per paper only