Investigation on the effect of different additives on anaerobic co-digestion of corn straw and sewage sludge: Comparison of biochar, Fe3O4, and magnetic biochar

2021 ◽  
pp. 126532
Author(s):  
Pengfei Li ◽  
Qi Wang ◽  
Xiaoman He ◽  
Ran Yu ◽  
Chao He ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Corn Straw ◽  
Magnetic Biochar

Investigation on the Effect of Different Additives on Anaerobic Co-Digestion of Corn Straw and Sewage Sludge

2021 ◽  
Author(s):  
Pengfei Li ◽  
Qi Wang ◽  
Xiaoman He ◽  
Ran Yu ◽  
Chao He ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Corn Straw

Synthesis and characterization of a novel magnetic biochar from sewage sludge and its effectiveness in the removal of methyl orange from aqueous solution

2017 ◽  
Vol 75 (7) ◽  
pp. 1539-1547 ◽  
Author(s):  
Jing Zhang ◽  
Mao Liu ◽  
Tao Yang ◽  
Kai Yang ◽  
Hongyu Wang
Keyword(s):  
Aqueous Solution ◽  
Methyl Orange ◽  
Sewage Sludge ◽  
Kinetic Studies ◽  
Second Order ◽  
Environmental Cleanup ◽  
Magnetic Biochar ◽  
Freundlich Isotherms ◽  
Equilibrium Data ◽  
Pseudo Second Order

A novel magnetic biochar from sewage sludge (MSBC) using SrFe12O19 as magnetic substrate was successfully synthesized under high-temperature and oxygen-free conditions. Several techniques and methodologies (X-ray diffraction, Fourier transform infrared spectroscopy and vibrating sample magnetometer) were used to determine the surface functional groups and physicochemical properties of MSBC, which showed that the MSBC combined the features of both SrFe12O19 and sludge biochar (SBC). And then the adsorption behavior of methyl orange (MO) from aqueous solution onto the MSBC was investigated. And the influence of variables including pH, initial concentration of MO, adsorbent dosage and contact time was studied in detail. The optimal adsorption amount of MO (149.18 mg·g−1) was obtained with 600 MO mg·L−1, 2 MSBC g·L−1, at pH of 5 for 40 min. The equilibrium data were evaluated using Langmuir and Freundlich isotherms. The Langmuir model better described the absorption of MO. Besides, the kinetic data were analyzed using pseudo-first-order and pseudo-second-order equations, and the pseudo-second order exhibited the better fit for the kinetic studies (R2 = 0.9982). This study showed that MSBC could be utilized as an efficient, magnetically separable adsorbent for the environmental cleanup.

Study on NOx emission during corn straw/sewage sludge co-combustion: Experiments and modelling

Fuel ◽  
2021 ◽  
Vol 285 ◽  
pp. 119208 ◽  
Author(s):  
Ruilei Yang ◽  
Chen Ma ◽  
Guanyi Chen ◽  
Zhanjun Cheng ◽  
Beibei Yan ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Nox Emission ◽  
Corn Straw

scholarly journals Functionalized biochar-supported magnetic MnFe2O4 nanocomposite for the removal of Pb(ii) and Cd(ii)

RSC Advances ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 365-376 ◽  
Author(s):  
Lianke Zhang ◽  
Jinyue Guo ◽  
Xuemin Huang ◽  
Weida Wang ◽  
Peng Sun ◽  
...  
Keyword(s):  
Functional Groups ◽  
Low Cost ◽  
Sol Gel ◽  
Egg White ◽  
Corn Straw ◽  
Magnetic Biochar

In this study, a novel magnetic biochar-MnFe2O4 nanocomposite (BC/FM) was prepared using low-cost corn straw and MnFe2O4 by sol–gel/pyrolyzing route using egg white, which has abundant functional groups (–NH2 and –COOH).

A novel magnetic biochar from sewage sludge: synthesis and its application for the removal of malachite green from wastewater

2016 ◽  
Vol 74 (8) ◽  
pp. 1971-1979 ◽  
Author(s):  
Jing Zhang ◽  
Mao Liu ◽  
Tao Yang ◽  
Kai Yang ◽  
Hongyu Wang
Keyword(s):  
Sewage Sludge ◽  
Malachite Green ◽  
Strontium Hexaferrite ◽  
Order Kinetic ◽  
Mass Ratio ◽  
X Ray Diffraction ◽  
Magnetic Biochar ◽  
Equilibrium Data ◽  
Order Kinetic Model ◽  
Pseudo Second Order

In this study, a novel magnetic sludge biochar (MSBC) from sewage sludge was created by the assembly of strontium hexaferrite (SrFe12O19) onto the surface of sewage sludge biochar (SBC) under high-temperature and oxygen-free conditions. The characterization of MSBC was achieved by Fourier transform infrared spectroscopy, X-ray diffraction and vibrating sample magnetometry, and the adsorption properties of the MSBC towards malachite green (MG) from aqueous solution were systematically investigated. The influence of variables (different mass ratio of SBC and SrFe12O19, initial MG concentration, absorbent dosage, pH and contact time) was also studied in detail. The optimal adsorption amount of MG (388.65 mg MG/g) was obtained with 500 mg MG/L, 2.0 g MSBC/L for 40 min under pH of 7.0, with different mass ratios of SBC and SrFe12O19 (1:4, 1:2, 3:4 and 1:1), when the mass ratio of SBC and SrFe12O19 was 3:4 at room temperature, and the Langmuir model was more suitable than the Freundlich model for equilibrium data. Meanwhile, the kinetic models showed that the overall adsorption process was better described by a pseudo-second-order kinetic model. The results indicated that the MSBC was a novel, efficient, magnetically separable adsorbent for the removal of the dye from wastewater.

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