Innovative Approaches for Drinking- and Waste-Water Treatment: An Editorial Review Summarizing and Assessing the Findings of the Special Issue

Abstract

The present special issue collected articles that address the very important topic of innovative approaches in water and wastewater treatment technologies. Thirteen articles are published, ten research paper and three review articles. The papers can be divided in four major categories, namely, membrane treatment, adsorption studies, advanced oxidation processes and wastewater treatment optimization. In the editorial, a brief description of the findings of each paper is presented along with a critical assessment.

A Review on Carbon Quantum Dots Modified g-C3N4-Based Photocatalysts and Potential Application in Wastewater Treatment

“…• SO 4 − , and h + , when reacted with H 2 O/ − OH or dissolved oxygen, facilitating the degradation of nonbiodegradable organic compounds into simpler molecules (H 2 O and CO 2 ) [37]. The strong oxidizing capability of ROS and holes proficiently mitigate developing pollutants and boost the reaction kinetics [38]. The production of the superoxide radical ( • O 2 − ) as a result of the reaction between oxygen and photoexcited electrons in the conduction band (CB) of a semiconductor and the production of hydroxyl radicals ( • OH) after a reaction with valence band (VB) holes is illustrated by the following Equations ( 1) and (2) [39];…”