**Author details**

*Emerging Contaminants*

**Agro/Food Waste Adsorption Capacity** 

Rice husk (acid treated) 29.00 [89] Orange peel 50.94 [105] Peanut hull pellet 12.00 [107] Sago husk ash 12.40 [108]

Orange peel (chemically modified) 70.67 [105] Potato peel (ZnCl2 treated) 74.00 [109] Peanut hull 21.25 [110] Mango peel 46.09 [106] Chestnut shell 12.56 [111]

> Guava seed 18.05 [112] Pomegranate peel 52.00 [113] Orange peel 158.00 [114] Tea waste 73.00 [12]

Hazelnut shell 28.18 [91] Mango peel 99.05 [105] Coconut (coir pith waste) 263.00 [90] Rice husk (acid treated) 108.00 [89] Wheat bran 87.00 [115] Chitosan 8.30 [91] Banana peel 2.18 [100]

Wheat bran 16.40 [48] Mango peel 28.21 [106] Tea waste 8.90 [117]

Cu (II) Wheat bran 8.34 [80]

Ni (II) Mango peel 39.75 [106]

Pb (II) Wheat bran (chemically modified) 62.00 [16]

Zn (II) *Cicerarientinum*seed 20.00 [116]

*Biosorption capacities of different agricultural waste and plant products for the eradication of toxic metal ions.*

and coir pith waste of coconut [15, 89]. The absorption capacity of coir pith waste of coconut and chitosan is found to be 263.0 mg/g and 8.3 mg/g respectively as shown in **Table 2** [90, 91]. Biosorption capacities of various other agro/food wastes against the removal of toxic heavy metal ions are presented in **Table 2**.

The existing physical and chemical methods for the removal of heavy metals have severe limitations such as they require various chemicals, are energy intensive, costly to operate, produce large quantities of sludge whose disposal is a big problem etc. Therefore, there is a need of some alternative method which can attractively remove the toxic metal ions in the best possible way. In this regard biosorption is an attractive alternative method to remove the toxic metal ions effectively from

**(mg/g)**

**References**

**Toxic Metal Ions**

**140**

**Table 2.**

**8. Conclusions**

Faizan Ahmad and Sadaf Zaidi\* Department of Post Harvest Engineering and Technology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, India

\*Address all correspondence to: sadaf63in@yahoo.com

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