Production of New Adsorbent from <i>Mango residues</i> Collected in the Urban Community of Mamou

Abstract

Activated coal obtained from mango residues is an alternative for the valorisation of these wastes for applications. This work focuses on the production of a new adsorbent from mango residues collected in the urban common of Mamou (Republic of Guinea) by chemical activation with potassium hydroxide. To do this, the different rates: humidity, cinders, volatile matter, fixed carbon et iodine indices before activation and after activation at 400˚C and 700˚C were determined which are: (6.28%; 0.97%; 73.80%; 25.23%) respectively. The best indices were found in powdered activated coal compared to grain activated coal for the concentrations used. This study can be an alternative bio-adsorbent for the urban community of Mamou in water treatment.

Removal of Nitrate and Phosphate Ions from the Bafing River by an Adsorbent Obtained from the Shells of Mango Cores

“…These values are very high compared to the results obtained from (Sow, 2017) on the Niger rivers are: (12.58 mg/l) and Mafou (15.58 mg/l) without treatment. After treatment of the samples with activated carbon produced by us (Sow et al, 2022), the nitrate ion concentrations go from 44.72 mg/l to 9.08 mg/l (P1); from 51.12 mg/l to 9.59 mg/l (P2) and from 57.89 mg/l to 5.96 mg/l (P3) i.e., an average of (83.55%) of nitrate ions retained by the carbon used (Figure 5 and Table 1). However, for phosphate ions, the concentration values at sampling points P1, P2 and P3 (April) before treatment are: 5.09 mg/l, 10.34 mg/l and 13.27 mg/l.…”

“…The adsorbent (activated carbon) used in this work to remove these phosphate and nitrate ions demonstrated to be one the most the simple method and who give excellent results was obtained by the physical activation process (carbonization) of mango residues collected in the urban area of Mamou (Sow et al, 2022).…”

“…The experimental device used is a simple device made by us (Sow et al, 2022). It consists of a bottle, connected to the cartridge by the connector (1) (filtration column) and the cartridge connected to the beaker by the connector (2) all in polymer.…”

“…In addition, many studies have been postponed on the news adsorbents from agricultural mango seed oral monde derived, mango peel activated and used for removal phenol, methylene blue, batik waste industry, fluid nutrient and safranine in aqueous solutions (Nugroho et al, 2022;Akpen et al, 2014;Kanjilal et al, 2014;El Nasri et al, 2022., Malekbala et al, 2012. Indeed, we recently published an article on the production of a new adsorbent from mango nuts or shells collected in the urban commune of Mamou as part of water purification (Sow et al, 2022). As an extension of our studies, we report in this present work the use of mango kernel shells as adsorbents to remove nitrate and phosphate ions from the waters of the Bafing River.…”