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Chromium adsorption on surface activated biochar made from tann.ry liming sludge:A waste-to-wealth approach

Water Science and Engineering 2022年第4期15卷 328-336页

作者： Abul Hashem Sofia Payel Sadia Mim an.k hasan.shahruk n.r-a-tomal Amin.r rahman Majher I.Sarker Department of Leather Engineering Khulna University of Engineering&Technology(KUET)Khulna 9203Bangladesh Department of Public Health Engineering(DPHE) Zonal LaboratoryJashore 7400Bangladesh Global Cen.re for Environmental remediation(GCEr) College of EngineeringScience and EnvironmentThe University of NewcastleCallaghanNSW 2308Australia Sustainable Biofuels and Co-Products research Unit Eastern Regional Research CenterAgricultural Research ServiceU.S.Department of AgricultureWyndmoorPA 19038USA

In a beamhouse,liming plays a key role in the removal of hair/wool and epidermis,but problems are created when waste liming sludge is discharged to the *** treatment of tann.ry wastewater is another major challenge to the *** this study,thermally-activated biochars derived from liming sludge were studied for their effective adsorption of chromium(Cr)from the tann.ry *** thermally activated biochars(B500,B550,B600,and B650)were prepared at different temperatures from the liming *** characteristics before and after the treatment were investigated using Fourier transform in.rared spectroscopy,en.rgy dispersive X-ray spectroscopy,Bru-nauer-Emmett-Teller,and scanning electron microscopy *** related functional groups(C-H,O-H,C-n,and=C-O)and chromium adsorption capacity were determined according to the surface morphology,element contents(C,O,Ca,na,Al,Mg,and Si),surface area(5.8-9.2 m^(2)/g),pore size(5.22-5.53 nm),and particle size(652-1034 nm)of the experimental *** biochar originated at 600°C from the tann.ry liming sludge(B600)had a greater surface area with a chromium adsorption capacity of 99.8%in comparison to B500,B550,and B650 *** study developed an innovative way of utilizing liming sludge waste to minimize the pollution load and wastewater treatment cost in the tann.ry industry.

关键词： Adsorption Waste recycling Biochar application Thermal modification Tann.ry Solid waste

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