Recent Developments in the Removal of Dyes from Water by Starch‐Based Adsorbents

Abstract

Starch‐based adsorbents have demonstrated excellent potential for the removal of various noxious dyes from wastewater. This review critically evaluates the recent progress in applications of starch‐based adsorbents for the removal of dyes from water. The synthesis methods of starch‐based composites and their effects on physicochemical characteristics of produced adsorbents are discussed. The removal of various dyes by starch‐based adsorbents are described in detail, with emphasis on the effect of key parameters, adsorption mechanism and their reusability potential. The key challenges related to the synthesis and applications of starch‐based adsorbents in water purification are highlighted. Based on the research gaps, recommendations for future research are made. The evaluation of starch‐based adsorbents would contribute to the development of sustainable water treatment options in near future.

Versatile Applications Of Biopolymer Nanocomposites: A review

“…Polysaccharide-based AuNPs and AgNPs had great performances within the sensing of ammonia at room temperature with the detection restriction of 1 part per billion (ppb) and guar gum primarily based AuNPs should present a much wider detection variety of ammonia from 0.1 elementsper-quadrillion (ppq) to 75,000 parts per million (ppm) due to the versions in electrical conductivity. [101][102][103] Another toxic pollutant is hydrogen peroxide, which can also be effectively monitored using an optic H 2 O 2 sensor (polysaccharide-based AgNPs) in the concentration variety of 0.001 to 10 mM. [103] Tin oxide (SnO 2 ), typically called semiconductor cloth, exhibited rapid reaction, high sensitivity, low strength intake, industrially produced potency, and extensive operation running temperature range characteristics, which have been particularly appropriate for the sensible packages in gasoline sensors.…”

“…[101][102][103] Another toxic pollutant is hydrogen peroxide, which can also be effectively monitored using an optic H 2 O 2 sensor (polysaccharide-based AgNPs) in the concentration variety of 0.001 to 10 mM. [103] Tin oxide (SnO 2 ), typically called semiconductor cloth, exhibited rapid reaction, high sensitivity, low strength intake, industrially produced potency, and extensive operation running temperature range characteristics, which have been particularly appropriate for the sensible packages in gasoline sensors. [104] Therefore, polysaccharide-based Au-doped SnO 2 nanoparticles were bio-inexperienced synthesized and their excessive sensitivity in the sensing of NO 2 and ethanol vapor cause them to possible retailers for the tracking of dangerous gas .…”

“…In this regard, ammonia sensors would come across the ambient ammonia concentrations before releasing them into the environment. Polysaccharide‐based AuNPs and AgNPs had great performances within the sensing of ammonia at room temperature with the detection restriction of 1 part per billion (ppb) and guar gum primarily based AuNPs should present a much wider detection variety of ammonia from 0.1 elements‐per‐quadrillion (ppq) to 75,000 parts per million (ppm) due to the versions in electrical conductivity [101–103] . Another toxic pollutant is hydrogen peroxide, which can also be effectively monitored using an optic H 2 O 2 sensor (polysaccharide‐based AgNPs) in the concentration variety of 0.001 to 10 mM [103] .…”

Crystal Phase and Morphology-Controlled Synthesis of Tungsten Oxide Nanostructures for Remarkably Ultrafast Adsorption and Separation of Organic Dyes

“…Among numerous chemical, physical, and biological wastewater treatment techniques for reducing the contaminant's concentration to an acceptable level, 5,6 adsorption is one of the most common and convenient methods because of its ease of operation, flexibility, high efficiency, low cost, and easy regeneration. 7,8 So far, most adsorbents are mainly porous materials, including activated carbon, 9,10 zeolites, 11,12 clay minerals, 13 biowaste, 14 siliceous, 15,16 and polymeric materials. 17,18 These materials have excellent adsorption capacity for organic dyes due to their porous structures and high surface area.…”

“…Synthetic organic dyes are used in large quantities in several modern industries, including dyestuffs, plastics, paper, textiles, cosmetics, and food processing industries. , The industry discharges a large amount of dye wastewater, which causes severe environmental issues. , Therefore, various treatment methods and techniques have been studied to remove organic dyes from contaminated water. Among numerous chemical, physical, and biological wastewater treatment techniques for reducing the contaminant’s concentration to an acceptable level, , adsorption is one of the most common and convenient methods because of its ease of operation, flexibility, high efficiency, low cost, and easy regeneration. , …”