Adsorptive removal of eight heavy metals from aqueous solution by unmodified and modified agricultural waste: tangerine peel

Tangerine, banana and pomegranate peels valorisation for sustainable environment: A review

“…Amin [ 168 ] has shown that activated carbon prepared from chemically treated PPW is an effective adsorbent for the removal of the blue-106 dye directly from the aqueous solution. For TPW, the study of Abdić et al [ 21 ] has confirmed that TPW is a very interesting material for the removal of Cr, Cu, Mn, Co, Ni, Pb, Cd and Zn from polluted water by these heavy metals, also it has shown that the adsorbent of these heavy metals is a mechanism of ion exchange between the negatively charged groups present in the wall of TPW and the cationic metal ions. Furthermore, Sobhani and Ziarati [ 169 ] have revealed that TPW has a high potential for the removal of heavy metals (Pb, Cd and Ni) from plant coriander.…”

“…Every TPW, PPW and BPW valorisation pathway depends on a high number of factors affecting economic viability [ [12] , [13] , [14] ]. TPW, PPW and BPW may be used directly or after treatments as animal feed [ 15 , 16 ], soil amendment [ [17] , [18] , [19] ], bio-adsorbents [ 20 , 21 ], and the production of the outputs was obtained by the biorefinery process (biogas, bioethanol and biohydrogen) [ [22] , [23] , [24] , [25] , [26] ]. Numerous other studies have focused on the valorisation of TPW, PPW and BPW for the production of value-added products (essential oil, enzymes, food, medical and cosmetic products) [ [27] , [28] , [29] , [30] , [31] , [32] , [33] , [34] , [35] , [36] , [37] ].…”

Simultaneous adsorption of heavy metals from water by novel lemon-peel based biomaterial

“…Lemon peel modifi cation screening. Conditions: pH 5; total metal concentration 350 mg L −1 ; amount of biomass 100 mg; volume of the solution 50 mL; room temperature; equilibrium time 60 min at 250 rpm carboxyl group, this peak disappeared in case of modifi ed lemon peel as a result of protein, pectin and some organic substances removal 11,26,29 . This was additionally supported by disappearance of stretching vibration of C=C in aromatic rings of lignin which in native lemon peel spectrum was obtained at 1515 cm -1 30 .…”

“…There is some indication that the carboxyl groups of pectic acid (a biopolymer known to be present in citrus peels) as well as functional groups of cellulose are acting as binding sites for positively charged metal resulting in good metal uptake. Several types of citrus peels, native or chemically modifi ed, have been recently explored for the removal of various heavy metals from wastewaters [4][5][6][7][8][9][10][11] .…”

Evolution of adsorption process for manganese removal in water via agricultural waste adsorbents

“… Abdić et al. (2018) presented that the untreated tangerine peels adsorbent had low manganese removal of 30%.…”