Open AccessCarbonization of sludge biomass of water treatment plant using continuous screw type conveyer pyrolyzer for methylene blue removal
Author(s) -
Mohd Azmier Ahmad,
Mohamad Firdaus Mohamad Yusop,
Syafikah Awang,
Nasehir Khan E.M. Yahaya,
Muhammad Abdur Rasyid,
H. S. Hassan
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/765/1/012112
Subject(s) - carbonization , adsorption , methylene blue , aqueous solution , freundlich equation , materials science , sewage sludge , monolayer , nuclear chemistry , volume (thermodynamics) , biomass (ecology) , diffusion , chemical engineering , chemistry , pulp and paper industry , chromatography , sewage treatment , environmental engineering , organic chemistry , environmental science , photocatalysis , nanotechnology , physics , oceanography , quantum mechanics , geology , engineering , thermodynamics , catalysis
The wide and fast growth of the textile industry has become one of the contributors to the water pollution. In this study, carbonized sludge (CS) was produced as an adsorbent for removal of methylene blue (MB) dye from aqueous solution. Sludge biomass from water treatment plant as precursor was carbonized using continuous screw type conveyer pyrolyzer at different conveyer frequency of 5 Hz and 10 Hz. Batch adsorption studies were carried out by varying MB initial concentrations (25 - 300 mg/L) and contact time (0 - 24 hours). The CS5Hz sample shows the highest surface area and total pore volume of 88.73 m 2 /g and 0.1417 cm 3 /g, respectively. This sample exhibits average pore diameter of 3.84 nm, monolayer adsorption capacity of 45.68 mg/g and well develop of pores structure. Freundlich and pseudo second order models were revealed to fit the isotherm and kinetic data, respectively with film diffusion play a major role as rate limiting step.