Current Advances in Design of Starch‐Based Superabsorbent Polymers and Their Removal of Typical Pollutants from Tannery Wastewater

Abstract

With the vigorous development of leather industry, the environmental pollution problem originated from tannery wastewater is becoming increasingly serious, which could be solved by using the advanced adsorption technology. As a biodegradable natural biomaterial, starch displays a wide range of sources and has gradually become one of the best choices for preparing superabsorbent polymers. The excellent characteristics of starch‐based superabsorbent polymer make it widely applied in wastewater treatment. Therefore, this paper reviewed the research progress of starch‐based superabsorbent polymer in recent years by removing metal ions and typical organic compounds from tannery wastewater. Firstly, the synthesis methods and characteristics of starch‐based superabsorbent polymers were discussed. Secondly, the main factors influencing the adsorption performance of starch‐based superabsorbent polymer have been introduced. Thirdly, the present situation of treating tannery wastewater with starch‐based superabsorbent polymer was summarized. Finally, some problems existing in the practical application of starch‐based superabsorbent polymer were proposed. Although starch‐based superabsorbent polymer showed excellent adsorption properties, there remained several issues such as recycling needed to be addressed. This review would benefit for the high‐value utilizations of starch‐based superabsorbent polymers in reducing the environmental pollution caused by tannery wastewater.This article is protected by copyright. All rights reserved

Preparation and Properties of Attapulgite-Hydroxyethyl Cellulose Composite Poly (Acrylic Acid-co-2-acrylamide-2-methylpropanesulfonic Acid) Concrete Internal Curing Material

“…However, it can be copolymerized with non-ionic groups (such as acrylamide) to improve the salt-resistant properties of waterabsorbing polymers [16,17]. To address the shortcomings of traditional synthetic high water-absorbent polymers, natural polysaccharide-modified water-absorbent materials, including cellulose [18,19], starch [20], sodium alginate [21], and chitosan [11], have been developed in recent years. These water-absorbent materials possess advantages such as degradability, renewability, good affinity, low cost, etc., resulting in better application prospects.…”