Biomass based activated carbon obtained from sludge and sugarcane bagasse for removing lead ion from wastewater. (September 2015)

• Record Type: Journal Article
• Authors: Tao, Hu-Chun; Zhang, He-Ran; Li, Jin-Bo; Ding, Wen-Yi
• Is Part Of: Bioresource technology. Volume 192(2015)
• Page Start: 611
• Page End: 617
• Publication Date: 2015-09
• Subjects: Sludge -- Sugarcane bagasse -- Activated carbon -- Adsorption -- Metal removal; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2015.06.006
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Bagasse modified municipal sewage sludge based adsorbent. HNO3 modified adsorbent to promote its adsorb-ability of Pb 2+ . The adsorption capacity of Pb 2+ increases to more than 50 mg/g. Abstract: Sewage sludge and bagasse were used as raw materials to produce cheap and efficient adsorbent with great adsorption capacity of Pb 2+ . By pyrolysis at 800 °C for 0.5 h, the largest surface area (806.57 m 2 /g) of the adsorbent was obtained, enriched with organic functional groups. The optimal conditions for production of the adsorbent and adsorption of Pb 2+ were investigated. The results of adsorb-ability fitted the Langmuir isotherm and pseudo-second-order model well. The highest Pb 2+ (at pH = 4.0) adsorption capacity was achieved by treating with 60% (v/v) HNO3 . This is a promising approach for metal removal from wastewater, as well as recycling sewage sludge and bagasse to ease their disposal pressure.