King Fahd University of Petroleum and Minerals

Shakhawat Hossain Chowdhury

Md Abdul Aziz

Mohammad Abu Jafar Mazumder

Md Imran Rahman Chowdhury

Jute stick/stalk can be used to prepared and carboxylated to yield useful activated carbons, e.g., for removing Pbfrom drinking water. Such activated carbons can act as an inexpensive adsorbents using agricultural waste or by-products. Carboxylation of jute stick activated carbon (JSAC) can improve its efficiency for Pbremoval, e.g., from aqueous solutions, even if its BET surface area is reduced. Carboxylated JSAC (JSAC-COO) can have surface areas around 615.3&#xb1;0.5, 1, 2.5, 5, 10, 15, 20, or 25 m/g. JSAC-COOcan treat varied Pbconcentrations, 10, 25 mg/L, etc., pHs, e.g., 4.0, 7.0, etc., temperatures, e.g., 15&#xb0; C., 27&#xb0; C., etc., and contact periods, e.g., 1, 5, 10, 15, 30, 60 minutes, etc., achieving up to 99.8% Pbremoval within 15 minutes of contact JSAC-COOadsorption capacity can be &#x3e;25.0 mg Pb/g, as well as other metal ions, with potential for water and/or gas treatment.

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Dhahran, Saudi Arabia

Shakhawat Hossain Chowdhury