Themed collection UN Sustainable Development Goal 11: Sustainable Cities and Communities.

Engineering microbial metabolism is tapped potential to convert industrial waste and by-products into high-value chemical products, providing a more sustainable alternative to traditionally oil-derived chemicals.

A design of PET mechanical recycling at the industrial scale requires the inspection of the relevance of pre-treatment steps, degradation reactions and repair potential, accounting for the impact of contamination (e.g. NIAS) and regulations.

Phytomining, the extraction of valuable metals from soil or waste substrates using plants, has gained increasing attention as a sustainable and economically viable alternative to conventional mining practices.

This study reviews saccharification technologies, focusing on HCl-based methods, their industrial evolution, and challenges in scaling, emphasizing the historical progress and ongoing need for innovation.

The image displays various biowastes, important constituents, and possible products of the pretreatment process.

Thermochemical and bioprocessing are feasible for recovering valuable building block molecules from plastic residues. Chemo-enzymatic treatment of waste plastic-biomass mixtures is an open challenge due to the diverse composition of the residues.

Herein, we have synthesized high-performance, low-cost ionomer biocomposites comprised of sulfonated poly(ether ether ketone) (SPEEK) and softwood Kraft lignin with proton selectivities three- to ten-fold higher than that of neat SPEEK.

Microplastics are present in nearly all environments.

Cellulose acetate (CA) membranes incorporated with amino acids (AAs) and ionic liquids (ILs) fabricated using phase inversion technique have been proven to be efficient and effective for nanofiltration to treat heavy metal ion solutions.

The specialty chemical sector offers unique opportunities for the development of electrochemical reaction processes to integrate low-carbon electricity and reduce greenhouse gas emissions.