Open AccessDOI
Activation of persulfate by biochar for the degradation of phenolic compounds in aqueous systems
Kleopatra Miserli,Dimitra Kogola,Irini Paraschoudi,Ioannis Konstantinou +3 more
- Vol. 9, pp 100201
TLDR
In this article, the application of biochar matrix as an alternative carbon catalyst for the activation of persulfate (PS) and degradation of phenol and phenolic transformation products was examined.Abstract:
Advanced Oxidation Processes (AOPs) based on sulfate radicals (SR-AOPs) are efficient chemical methods for water and wastewater treatment gaining attention in the last years. In this study, the application of biochar (BC) matrix as an alternative carbon catalyst for the activation of persulfate (PS) and degradation of phenol and phenolic transformation products was examined. BC/PS system was compared with BC/Fe2+/PS system however the presence of Fe2+ did not enhance greatly the degradation rate showing that biochar playing the major role in PS activation. The effect of various parameters, such as PS and BC dosing, pH, the presence of anions (Cl−, NO3−, HCO3−, HPO42−) and humic acids (HA), separately and in combination, at different concentration levels, simulating surface waters and wastewaters, in degradation kinetics was studied. Degradation of phenolics followed pseudo-first order kinetics in all cases and under optimum conditions, fast complete removal was achieved within few minutes. The presence of all anions studied decreased the removal rate of phenolics with HPO42− showing the greater inhibition. Moreover, humic acids, as representatives of natural organic matter (NOM), decrease phenolics degradation efficiency and in combination with anions showed the more pronounced inhibitory effect. In addition, scavenger quenching experiments with ethanol, tert-butanol and NaN3 confirmed the dominant role of 1O2 following by HO• radicals while sulfate (SO4•−) radicals contribute to a minor degree. Biochar loses progressively its activation efficiency after three cycles. The results of this study contribute to the development of analogous treatment technologies for the removal of phenol-based taste and odor compounds.read more
Citations
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Journal ArticleDOI
A Review on Application of Biochar in the Removal of Pharmaceutical Pollutants through Adsorption and Persulfate-Based AOPs
Ziyang Kang,Xigai Jia,Yuchen Zhang,Xiaoxuan Kang,Ming-Jing Ge,Dong Liu,Chongqing Wang,Zhangxing He +7 more
TL;DR: In this paper , the application of biochar in the removal of drugs (tetracycline (TC), sulfamethoxazole (SMX), acetaminophen (ACT), cephalexin (CPX), levofloxacin (LEV), etc.) through adsorption and persulfate-based AOPs was reviewed.
Journal ArticleDOI
Sulfate radicals-based advanced oxidation processes for the degradation of pharmaceuticals and personal care products: A review on relevant activation mechanisms, performance, and perspectives.
TL;DR: In this article , a comprehensive assessment of the different methods such as heat, ultraviolet (UV) light, photo-generated electrons, ultrasound (US), electrochemical, carbon nanomaterials, homogeneous, and heterogeneous catalysts for activating peroxymonosulfate (PMS) and peroxydisulfate(PDS).
Journal ArticleDOI
Catalytic propensity of biochar decorated with core-shell nZVI@Fe3O4: A sustainable photo-Fenton catalysis of methylene blue dye and reduction of 4-nitrophenol
Arshid Bashir,Altaf Hussain Pandith,Aaliya Qureashi,Lateef Ahmad Malik,Murtaza Gani,Jaime Moreno Perez +5 more
TL;DR: In this article , a peach skin derived fibrous biochar (FBC) with spherical zerovalent iron nanoparticles (nZVI) was developed to develop a sustainable and more robust nano-catalytic material.
Journal ArticleDOI
Waste to catalyst: Role of agricultural waste in water and wastewater treatment.
TL;DR: In this paper , the authors highlight the recent development and applications of biochars and/or green nanoparticles (NPs) produced from agricultural waste via green routes in removing the refractory pollutants from water and wastewater.
Journal ArticleDOI
Development of a new hyper crosslinked resin based on polyamine-isocyanurate for the efficient removal of endocrine disruptor bisphenol-A from water
Tauqir Ahmad,Mohammad Saood Manzar,Jordana Georgin,Dison S. P. Franco,Sardaraz Khan,Lucas Meili,Nisar Ullah +6 more
TL;DR: In this paper , a polyamine-isocyanurate-based hyper crosslinked resin (ICYAN-PA) was synthesized for the adsorptive removal of BPA from aqueous solution.
References
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Journal ArticleDOI
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