The need for sustainable adsorbents from renewable
Research gap analysis derived from 4 chemistry papers in our local library.
The gap
The need for sustainable adsorbents from renewable biomass for wastewater treatment applications. The lack of efficient and cost-effective methods for removing heavy metals and organic dyes from wastewater.
Evidence profile
Sourced from the stated research gap and future-work section and synthesized of the source papers, classified as general, drawn from work published between 2016 and 2026, spanning 4 journals.
Research trend
Established — well-defined area with open sub-problems.
Supporting evidence — 5 representative gaps
- Graphene-based composites for heavy metal adsorption: a review on synthesis, mechanisms, and influencing factors (2026) · Environmental Science and Pollution Research · doi
The need for more efficient and effective methods for heavy metal removal. The limited understanding of the effects of temperature and pH on the adsorption capacity of graphene-based composites. The potential for agglomeration of graphene-based composites.
generalstated research gapevidence 5/5Keywords: need efficient effective methods heavy metal removal limited - Graphene-based composites for heavy metal adsorption: a review on synthesis, mechanisms, and influencing factors (2026) · Environmental Science and Pollution Research · doi
Further investigation of the effects of temperature and pH on the adsorption capacity of graphene-based composites. Exploration of the potential of graphene-based composites for use in water purification systems. Development of novel graphene-based composites with improved adsorption capacities.
generalfuture-work sectionevidence 5/5Keywords: further investigation effects temperature adsorption capacity graphene-based composites - Adsorption of Malachite Green using Coconut Shell–Graphite Oxide (CS-GiO): Kinetic and Isotherm Studies (2026) · Sorption Studies · doi
There is a need for effective and sustainable adsorbents for the removal of textile dyes from aqueous solutions. The use of graphene oxide as an adsorbent for textile dyes is a relatively new area of research. There is a lack of understanding of the adsorption mechanism and kinetics of textile dyes on graphene oxide-based adsorbents.
generalstated research gapevidence 5/5Keywords: there need effective sustainable adsorbents removal textile dyes - Coconut Shell-Derived rGO for Efficient Adsorption of Heavy Metals and Organic Dyes from Wastewater (2026) · Journal of Engineering and Environmental Systems · doi
The need for sustainable adsorbents from renewable biomass for wastewater treatment applications. The lack of efficient and cost-effective methods for removing heavy metals and organic dyes from wastewater.
generalstated research gapevidence 5/5Keywords: need sustainable adsorbents renewable biomass wastewater treatment applications - Synthesis of high‐quality graphene oxide from spent mobile phone batteries (2016) · Environmental Progress & Sustainable Energy · doi
Integration of graphite oxide synthesis from battery waste with immediate adsorption functionality has not been explored; current work either recovers graphite for battery reuse or synthesizes graphite oxide for unrelated applications (dye removal, CO₂ capture).
generalsynthesizedevidence 4/5Keywords: integration graphite oxide synthesis battery waste immediate adsorption
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