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복합학
DBpia AI
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Citeasy
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지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Abstract The increase in wastewater collection and treatment systems has shown the need for adequate treatment and final disposal of the resulting sludge. Heat treatment through pyrolysis is an alternative, as it promotes the valorization of these wastes by converting them into biochar. Biochar is a multifunctional material that can serve as an adsorbent for many types of pollutants, including removing heavy metals. This study’s main aim is to produce, characterize, and evaluate the remedial potential of biochar resulting from the pyrolysis of sewage sludge (SS) in water polluted with lead. Pre-prepared sludge-derived biochar without any activation and biochar derived from SS activated with phosphoric acid (H 3 PO 4 ) was prepared using a pre-chemical modification method by mixing a specified amount of H 3 PO 4 with SS. The batch adsorption tests were used to verify the parameters of the adsorbent concentration, solution pH, contact time, and initial concentration. The adsorbent was characterized using X-ray diffraction, scanning electron microscopy, Brunauer-Emmett-Teller, Fourier transform infrared spectroscopy, and energy dispersive spectrometer methods. The adsorption capacity was determined using the Langmuir and Freundlich models. The surface area of biochar increased from 35.769 m 2 /g for non-activated biochar to 136.04 m 2 /g for activated biochar with H 3 PO 4 . Biochar removed 87.36% of the lead. The activated biochar’s granular shape improved lead removal from the solution. This research has significant implications for removing lead from water using inexpensive sludge-based adsorbents.
#Biochar
#Sewage sludge
#Environmental science
#Contamination
#Waste management
#Lead (geology)
#Sewage
#Industrial chemistry
#Contaminated water
#Wastewater
#Sewage treatment
#Pulp and paper industry
#Environmental chemistry
#Environmental engineering
#Pyrolysis
#Chemistry
#Biochemical engineering
#Engineering
#Ecology
#Biology
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