Sentence examples for usually difficult to biodegrade from inspiring English sources

Dyes are usually difficult to biodegrade.

Dyes are usually highly visible, very difficult to biodegrade, and extremely difficult to eliminate in natural aquatic environments [3, 4].

Dyes usually have a synthetic and complex aromatic structure, which makes them more stable and difficult to biodegrade (Sayan 2006).

He added that it was also "difficult to biodegrade".

They are difficult to biodegrade aerobically because of their chemical stability.

Generally, synthetic dyes have complex aromatic structures that make them stable and difficult to biodegrade.

Photocatalytic treatment is an appropriate method for treating toxic and difficult to biodegrade organic materials.

It is persistent and recalcitrant in aquatic environments and difficult to biodegrade.

However, black-dark-brown coloured effluent is generated from the anaerobic ponds which is difficult to biodegrade at the subsequent aerobic ponds (Zahrim et al. 2014).

Among the three important constituents of plant cell wall material, the cellulose, lignin and hemicellulose, lignin is particularly difficult to biodegrade and reduces the bioavailability of the other cell wall constituents (Naik et al. 2012).

Polybrominated diphenyl ethers (PBDEs), commonly used as a flame retardants for industrial and commercial products, have a strong tendency to accumulate in the interface of water/soil/sediments and are difficult to biodegrade.