[Retracted] Intelligent CO₂ Monitoring for Diagnosis of Sleep Apnea Using Neural Cryptography Techniques

Table 1

Adsorption of in biomass.

Author	Aim	Adsorbent	Pollutant
Delgado-Moreno et al. [21]	New insights into the efficient removal of emerging contaminants by biochars and hydrochars derived from olive oil wastes	Biomass	Biochars and hydrochars
Egirani et al. [22]	Powdered and granular activated carbon from Palmae biomass for mercury removal	Biomass	Mercury removal
Govindan et al. [23]	Activated carbon derived from Phoenix dactylifera (palm tree) and decorated with MnO2 nanoparticles for enhanced hybrid capacitive deionization electrodes	Biomass	Dactylifera with MnO2 nanoparticles
Khorasgani et al. [24]	Briquetting grass and tree leaf biomass for sustainable production of future fuels	Biomass	Briquetting grass and tree leaf
Anastopolous et al. [25]	Agricultural biomasses for the removal of toxic metal(oid)s from contaminated aqueous solutions	Biomass	Toxic metal(oid)s
Wei et al. [26]	Petrochemical wastewater and produced water from oil and gas production are reviewed	Chitosan-activated montmorillonite, nutshell filters, etc.	Petrochemical wastewater and produced water from oil and gas
Doshi et al. [27]	Recovery of spilled oils using biomass and polymers, as sorbents or separators	Biomass	Diesel, crude oil, gasoline, waste lubricating oil, etc.
Wong et al. [28]	The use of ACs prepared from magnetic materials and nanoparticles in wastewater purification compared to biochars derived from biowaste	Biomass	Dyes, heavy metals