Indian jujuba seed powder as an eco-friendly and a low-cost biosorbent for removal of acid blue 25 from aqueous solution.
Indian jujuba seed powder (IJSP) has been investigated as a low-cost and an eco-friendly biosorbent, prepared for the removal of Acid Blue 25 (AB25) from aqueous solution. The prepared biomaterial was characterized by using FTIR and scanning electron microscopic studies. The effect of operation variables, such as IJSP dosage, contact time, concentration, pH, and temperature on the removal of AB25 was investigated, using batch biosorption technique. Removal efficiency increased with increase of IJSP dosage but decreased with increase of temperature. The equilibrium data were analyzed by the Langmuir and the Freundlich isotherm models. The data fitted well with the Langmuir model with a maximum biosorption capacity of 54.95 mg g(-1). The pseudo-second-order kinetics was the best for the biosorption of AB25 by IJSP, with good correlation. Thermodynamic parameters such as standard free energy change (ΔG(0)), standard enthalpy changes (ΔH(0)), and standard entropy changes (ΔS(0)) were analyzed. The removal of AB25 from aqueous solution by IJSP was a spontaneous and exothermic adsorption process. The results suggest that IJSP is a potential low-cost and an eco-friendly biosorbent for the AB25 removal from synthetic AB25 wastewater.
Geology Programme, School for Environmental Sciences and Natural Resources, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia ; Analytical Division, Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh 517 502, India.
L Sivarama
LS
Krishna
Analytical Division, Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh 517 502, India.
A Sreenath
AS
Reddy
Geology Programme, School for Environmental Sciences and Natural Resources, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
W Y Wan
WY
Zuhairi
Department of Civil and Structural Engineering, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia ; Institute for Environment and Development (LESTARI), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
M R
MR
Taha
Analytical Division, Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh 517 502, India.
A Varada
AV
Reddy
D000327:Adsorption; D000880:Anthraquinones / Q000737:chemistry* / Q000633:toxicity; D001673:Biodegradation, Environmental; D006801:Humans; D007700:Kinetics; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D011208:Powders / Q000737:chemistry / Q000494:pharmacology; D012639:Seeds / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D031957:Ziziphus / Q000737:chemistry*
C542340:1-amino-9,10-dihydro-9,10-dioxo-4-(phenylamino)-2-anthracenesulfonic acid; D000880:Anthraquinones; D010936:Plant Extracts; D011208:Powders; D014874:Water Pollutants, Chemical