Adsorption

Engineering

Ecology

Biology

Chelation

Ion exchange

Langmuir adsorption model

Waste management

Organic chemistry

Ananas

Langmuir

Environmental science

Horticulture

Chemistry

Pulp and paper industry

Circular economy

The Science of The Total Environment

Each year, nearly 30 million tons of pineapple fruit are harvested for food and drinking industries, along with the release of a huge amount of pineapple wastes. Without the proper treatment, pineapple wastes can cause adverse impacts on the environment, calling for new technologies to convert them into valuable products. Here, we review the production and application of adsorbents derived from pineapple wastes. The thermal processing or chemical modification improved the surface chemistry and porosity of these adsorbents. The specific surface areas of the pineapple wastes-based adsorbents were in range from 4.2 to at 522.9 m2·g−1. Almost adsorption systems followed the pseudo second order kinetic model, and Langmuir isotherm model. The adsorption mechanism was found with the major role of electrostatic attraction, complexation, chelation, and ion exchange. The pineapple wastes based adsorbents could be easily regenerated. We suggest the potential of the pineapple wastes towards circular economy.

A critical review on pineapple (Ananas comosus) wastes for water treatment, challenges and future prospects towards circular economy