Applications of Hydrogels in Water Treatment Processes through Climate Change

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Environmental and Green Processes".

Deadline for manuscript submissions: closed (15 February 2023) | Viewed by 1733

Special Issue Editors


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Guest Editor
Petroleum Applications Department, Egyptian Petroleum Research Institute, Cairo 11727, Egypt
Interests: surfactants; corrosion inhibitors; Schiff base; wear and erosion resistance of alloy; DFT; combined experimental and computational investigations; artificial intelligence

E-Mail Website
Guest Editor
Petroleum Applications Department, Egyptian Petroleum Research Institute, Nacr City 11727, Egypt
Interests: biochar; irrigation; water retention; water treatment

Special Issue Information

Dear Colleagues,

Climate change and overpopulation are the main challenges facing scientists and decision makers around the world today. Low rainfall with variable spatial and temporal distribution causes water scarcity, which hinders agricultural sustainability. Superabsorbent hydrogels can help agriculture by absorbing large amounts of water. Superabsorbent hydrogels have lately received attention for their increased water holding capacity, decreased irrigation rate, and ability to enhance plant growth and save water. Rapid population growth and industrialization have indirectly increased natural concerns such as water, air, and soil contamination. Metals are the most dangerous toxins. Heavy metal poisoning of water is one of the most serious and complex ecological challenges. One of the uses of hydrogel in agriculture is slow-release fertilizers to decrease the quantity of fertilizers instead of conventional fertilizers, especially with increases in the price of fertilizers on the agriculture market. Egypt’s biomass wastes provide biochar, which is made by pyrolyzing biomass waste. Biochar can increase soil quality and production in combination schemes, and biochar hydrogel composites are urgently needed for smart agriculture.

Dr. Elsayed Gamal Zaki
Prof. Dr. Shimaa Mohamed Elsaeed
Guest Editors

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Keywords

  • hydrogel
  • water treatment
  • irrigation
  • water stress
  • drought
  • abiotic stress
  • biotechnology
  • nanomaterial
  • antimicrobial
  • oxidative stress

Published Papers (1 paper)

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Research

16 pages, 3954 KiB  
Article
The Application of Hydroxyapatite NPs for Adsorption Antibiotic from Aqueous Solutions: Kinetic, Thermodynamic, and Isotherm Studies
by Huda S. Alhasan, Suhad A. Yasin, Nadiyah Alahmadi and Ahmad Khalaf Alkhawaldeh
Processes 2023, 11(3), 749; https://doi.org/10.3390/pr11030749 - 02 Mar 2023
Viewed by 1344
Abstract
Antibiotic pollution has become a serious concern due to the extensive use of antibiotics, their resistance to removal, and their detrimental effects on aquatic habitats and humans. Hence, developing an efficient antibiotic removal process for aqueous solutions has become vital. Amoxicillin (Amox) is [...] Read more.
Antibiotic pollution has become a serious concern due to the extensive use of antibiotics, their resistance to removal, and their detrimental effects on aquatic habitats and humans. Hence, developing an efficient antibiotic removal process for aqueous solutions has become vital. Amoxicillin (Amox) is one of the antibiotics that has been efficiently removed from an aqueous solution using hydroxyapatite nanoparticles (HAP NPs). The current study synthesizes and utilizes hydroxyapatite nanoparticles as a cost-effective adsorbent. Adsorbent dose, pH solution, initial Amox concentration, equilibrium time, and temperature are among the factors that have an evident impact on Amox antibiotic adsorption. The (200) mg dose, pH (5), temperature (25) °C, and time (120) min are shown to be the best-optimized values. The nonlinear Langmuir’s isotherm and pseudo-second-order kinetic models with equilibrium capacities of 4.01 mg/g are highly compatible with the experimental adsorption data. The experimental parameters of the thermodynamic analysis show that the Amox antibiotic adsorption onto HAP NPs powder is spontaneous and exothermic. Full article
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