BIOCHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 3.6
Zhenyu Shen,Zhenyang Wang,Changtao Ji,Jiahao Li,Gaige Liu
pH= 2 + SPC synergistically boosted WAS solubilization, raising SCOD by 11.8- fold. • Acid activated SPC to generate abundant ·OH, the core species disrupting WAS. • Optimal pretreatment produced 2048.7 mg/L SCFAs and shortened fermentation cycle. • pH= 2 + SPC selectively enriched acidogenic Acinetobacter and Proteiniclasticum . • Salt load caused by pH= 2 + SPC remained tolerable for acidogens. Waste activated sludge (WAS) hydrolysis is critically limited by the recalcitrance of extracellular polymeric substances (EPS) and the complex cellular structures of microorganisms. To address this, a novel acidic pH-driven sodium percarbonate (SPC) pretreatment strategy was proposed in this study. The proposed pretreatment strategy could synergistically enhance sludge solubilization and anaerobic fermentation efficiency. Under effective conditions (pH=2, 0.25 g SPC/g TSS, 4 h), the reactive oxygen species (·OH) generated by SPC disrupted sludge flocs and microbial cell walls, elevating soluble chemical oxygen demand by 11.8-fold and soluble proteins by 11.1-fold, respectively, compared to control group. Acidic pH-driven SPC pretreatment conditions significantly boosted short-chain fatty acids (SCFAs) generation, achieving the peak SCFAs concentration of 2048.7 mg/L, which was an 8.4-fold increase over untreated sludge and 1.25-fold higher than SPC-alone treatment. Acinetobacter and Proteiniclasticum , key genera correlated with SCFAs production, were remarkably enriched throughout the anaerobic fermentation process. Mechanistic studies revealed that acidic pH optimized the Fenton-like oxidation of SPC, promoted the generation of ·OH, improved substrates biodegradability, disrupted sludge surface structure, and created favorable conditions for anaerobic bioconversion. This work provides a practical guidance on optimizing sludge treatment and further advancing developing strategies for resource recovery. Download: Download high-res image (317KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Li Sun,Yuhao Xing,Chenxu Liu,Zhe Wang,Yi Jiang,Tiehong Song
To overcome the limitations of high energy consumption and low selectivity in conventional antibiotic treatment methods, this study developed a sodium percarbonate (SPC)-activated piezoelectric-photocatalytic system using a nitrogen-doped carbon quantum dot/molybdenum disulfide (N-CQDs/MoS₂) composite to degrade oxytetracycline (OTC). The catalyst was synthesized via a hydrothermal method and characterized by X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), piezoresponse force microscopy (PFM), and electrochemical analysis. Results showed that nitrogen-doped carbon quantum dots significantly enhanced the piezoelectric and photocatalytic performance of MoS₂. Reaction conditions were optimized using response surface methodology (RSM), determining the optimal parameters as OTC concentration of 10.68 mg/L, catalyst dosage of 0.46 g/L, and SPC dosage of 0.21 g/L. Under these conditions, a degradation efficiency of 99.52% was achieved within 25 minutes, closely matching the experimental result of 99.18%. The degradation kinetics followed a quasi-first-order model (k = 0.0752 min⁻¹), confirming the model’s reliability. Radical scavenging experiments and electron paramagnetic resonance (EPR) analysis identified h⁺, •OH, and O₂•⁻ as the main reactive species. Ecotoxicity assessment showed low toxicity of the degradation products, indicating good environmental safety. The catalyst maintained a high degradation efficiency of 96% after five cycles, demonstrating excellent stability and reusability.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Xianxian Sheng,Tianliang Wang,Guilu Zeng,Xiang Zhang,Mudassir Habib,Shuguang Lyu
In the advanced oxidation process (AOPs) induced by sodium percarbonate (SPC), reactive oxygen species (ROS) can be scavenged by a large amount of dissolved Fe(II) released within a short time. To address this issue, a slow-release Fe(II) process is proposed in this study, thereby enhancing the degradation of contaminants. SPC/Fe(III)/amorphous boron (B) and SPC/Fe(III)/citric acid (CA) procedures were employed to remove polycyclic aromatic hydrocarbons (PAHs), with B as the reductant and CA as the chelator. Fluoranthene (FLT) removal in SPC/Fe(III)/B process contributed to HO•, while HO• and O 2 − • were responsible for FLT degradation via SPC/Fe(III)/CA system. SPC/Fe(III)/CA system exhibits more adaptability to intricate water quality circumstances compared to SPC/Fe(III)/B system. The bio-toxicity of FLT and their degradation intermediates was evaluated via the Toxicity Estimation Software Tool (T.E.S.T.), revealing a reduction in oral rat LD50, developmental toxicity, mutagenicity, and bioconcentration factor of the degradation intermediates relative to FLT. Both amorphous B- or CA-assisted SPC/Fe(III) processes were shown to be eco-friendly through luminosity inhibition tests with Vibrio fischeri . Experiments on soil slurry revealed that SPC/Fe(III)/CA system was feasible for the removal of complex PAHs, directing the SPC-induced AOPs process for the remediation of PAHs contaminated soils and groundwater.
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL POLLUTION
·
2023
·
IF 8.9
Xiaolong Yu,Xu Jin,Meng Li,Yuanyuan Yu,Hang Liu,Rujin Zhou,Aiguo Yin,Junyi Shi,Jianteng Sun,Lizhong Zhu
Recently, sodium percarbonate (SPC) as a solid substitute for H 2 O 2 has aroused extensive attention in advanced oxidation processes . In current work, the degradation kinetics and mechanisms of antibiotic sulfamethoxazole (SMX) by ultraviolet (UV) driven SPC system were explored. The removal efficiency of SMX was enhanced as the increasing dosage of SPC. Moreover, hydroxyl radical (•OH), carbonate radical (CO 3 •− ) and superoxide radical (O 2 •− ) were verified to be presented by scavenger experiments and •OH, CO 3 •− exhibited a significant role in SMX degradation. Reactions mediated by these radicals were affected by anions and natural organic matters, implying that an incomplete mineralization of SMX would be ubiquitous. The screening four intermediates and transformation patterns of SMX were verified by DFT analysis. Metabolomic analysis demonstrated that a decreasing negative effect in E. coli after 24 h exposure was induced by intermediates products. In detail, SMX interfered in some key functional metabolic pathways including carbohydrate metabolism , pentose and glucuronate metabolism, nucleotide metabolism, arginine and proline metabolism, sphingolipid metabolism, which were mitigated after UV/SPC oxidation treatment, suggesting a declining environmental risk of SMX. This work provided new insights into biological impacts of SMX and its transformation products and vital guidance for SMX pollution control using UV/SPC technology .
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2023
·
IF 5
Junhao Fei,Tao Tang,Likang Zhou,Huiwen He,Meng Ma,Yanqin Shi,Si Chen,Xu Wang
The fabrication of biodegradable superabsorbent hydrogels (SAHs) with a high absorption capacity and robust gel strength at an acceptable cost remains challenging. In this study, a series of hyperbranched polyether crosslinkers were designed and employed as effective crosslinkers to create feasible, high-performance superabsorbent hydrogels that are environmentally friendly. The hydrogel materials achieved greater strength compared with traditional hydrogels by using hyperbranched polyether to create a homogenous and strongly crosslinked polymer network. In addition, it was determined that the addition of modified sodium lignosulfonate improved several characteristics of traditional hydrogels, including the absorption and fixation of water, and that the produced hydrogels have good antibacterial properties. According to an analysis of the structure–activity relationship, the resultant SAHs achieve greater saturated gel strength (∼2 kPa) and swelling capacities (91.6 g/g in normal saline) compared with commercial products. This study provides a promising approach for the fabrication of biodegradable SAHs owing to its varied engineering applications, low cost, and good environmental profile.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Chunyun Gu,Shuyu Liu,Jiarui Liang,Yuqian Wang,Shuyu Lu,Jie Ma
1,2,3-trichloropropane (TCP) is a newly regulated groundwater contaminant, however, its remediation technology has not been fully investigated. In this research, pyrite (FeS 2 ) was used as a novel activator of sodium percarbonate (SPC) for TCP degradation. TCP could be effectively removed by FeS 2 /SPC system with a much higher removal efficiency than the classic Fenton system. Free radical quenching test, hydroxyl radical probe reaction, EPR, XPS, XRD and SEM were used to elucidate the reaction mechanism. SPC was decomposed to produce H 2 O 2 , which was activated by Fe 2+ dissolved from pyrite to produce HO· and O 2 - ·. Both HO· and O 2 - · contributed to TCP degradation, but HO· played a more important role. The S elements of pyrite promoted the regeneration of Fe 2+ , thus enhancing the TCP degradation. The TCP removal efficiency significantly increased with increases in concentrations of pyrite and SPC and decreases in pyrite particle size and pH. Although HCO 3 - , Cl - and NOM inhibited TCP degradation by FeS 2 /SPC, the reaction system could still remove TCP in real groundwater. Overall, pyrite-activate SPC is a promising in-situ groundwater remediation technology .
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2023
·
IF 13.6
Tong Zhang,Yuan Chen,Tao Wang,Chang Liu,Dan He,Bin Liu,Yuanyuan Liu
Advanced oxidation processes are widely used to remove petroleum hydrocarbons from soil, but usually consume large quantities of ferrous and acidify the soil. This study tested an advanced oxidation approach based on percarbonate in laboratory experiments. It removed 88% petroleum hydrocarbons in soil with a pH increase from 8.2 to 10.2. ·OH and ·CO 3 - were the main reactive species, and degraded 41% and 37% PHCs from soil respectively. The o-dihydroxybenzene structure in catechin was found to reduce ferric to ferrous, and prolong the generation of ·OH from 120 s to over 1800 s. The petroleum hydrocarbons were degraded to intermediates including alkanes and olefins through hydrogen-abstraction by ·OH and ·CO 3 - , and by dimerization and β-scission of alkyl radicals. These intermediates were then oxidized to CO 2 and H 2 O by ·OH and ·CO 3 - . The main residual intermediates in the soil were low-molecular-weight n-alkanes and branched alkanes, and they were found to inhibit the growth of oats ( Avena sativa L. ) much less than the original petroleum hydrocarbons. These findings provide a fundamental basis for designing effective technologies which use percarbonate to remove organic pollutants .
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Tong Zhang,Yuan Chen,Yurong Zhang,Bin Liu,Yuanyuan Liu,Jianwei Zhao
Cr(VI) and catechol are common pollutants in wastewaters of tannery industry. Cr(VI) reduction by catechol results in accumulation of Cr(V)-complex and toxic o -benzoquinone. Cr(VI) reduction can be enhanced by accelerating the electron transfer from catechol to Cr(VI) using Fe(III). This electron transfer allows the continuous production of reactive oxygen species (ROS) in advanced oxidation processes, which further degrades catechol. However, the effects of catechol on Fe(III)-based Cr(VI) reduction and ROS production are not clear. In this study, the electron transfer pathway between catechol, Fe(III) and Cr(VI) was investigated along with the catechol degradation by ROS. Results show that the process of Cr(VI) reduction follows well a pseudo-second-order kinetic model, and the activation energy decreases by 4189 J/mol after electrons are transferred by Fe(III). Aqueous chromium (50 mg/L) was completely precipitated as Cr(OH) 3 , Fe x Cr 1-x (OH) 3 or Fe(OH) 3 -Cr(OH) 3 at Fe(III) concentration of 10 mmol/L. Residual catechol and Fe(II) in wastewater activated percarbonate, thereby producing OH for over 480 min at pH 3.0 and generating OH and CO 3 − for over 5 min at pH 10.0. Catechol was degraded by these ROS to butenedioic, oxalic, and formic acids, which were then mineralized to H 2 O and CO 2 . Catechol (2 mmo/L) was fully removed from wastewater with TOC removal of 37%, and the degradation was not affected by SO 4 2− and Cl − . This study provides new insights into the removal of pollutants from wastewaters via electron transfer mediated by Fe(III), and may aid in controlling the toxic effects of Cr(VI) and catechol-like organics in natural and engineered aquatic systems.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Haiqing Chang,Naiming Liu,Fangshu Qu,Xiaoxiang Cheng,Zhiwei Zhou,Ying Liang,Ying Yu,Heng Liang
Membrane fouling is the Achilles heel of membrane-based technologies. Severe membrane fouling occurs when a single microfiltration (MF) membrane is used to treat shale gas produced water (SGPW). Activated by Fe(II), sodium percarbonate (SPC) oxidation combined with aluminum sulfate coagulation was used in this study to evaluate the alleviation of MF fouling for the treatment of two typical SGPW samples with different water quality characteristics from Sichuan Basin. Results showed that pre-treated by oxidation and coagulation, more than 88% of turbidity, 11%–23% of UV 254 , and 11%-36% of DOC were removed. With the increase in SPC dosage, there was a decrease in fluorescent organics, primarily reducing soluble microbial by-product-like components by up to 37.0% for sample 1 and aromatic protein and soluble microbial by-product-like components by up to 66.7% and 71.2% for sample 2, respectively. Compared to low normalized fluxes (2%-6%) for the raw SGPW, 61%-79% of normalized fluxes were obtained using the combination of 10 mmol/L SPC and 0.9 mmol/L Al 2 (SO 4 ) 3 ·18H 2 O. There was a general evolution of complete blocking to intermediate blocking or cake layer filtration for membrane fouling mechanism. Scanning electron microscopy observation, deposited foulants on membrane surface and Fourier transform infrared analysis further confirmed the superior performance of the combination of SPC oxidation and coagulation. Correlation analysis showed that UV 254 ( R 2 = 0.79–0.95) played the most significant role in membrane fouling. Overall, this combined pretreatment process showed a great potential in MF membrane fouling control during the treatment of SGPW.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Xianxian Sheng,Yulong Liu,Mudassir Habib,Shuguang Lyu
In the advanced oxidation process for the remediation of organic contaminated water and soil, sodium percarbonate (SPC) is regarded as a potential oxidant. Iron sulfide (FeS) was chosen as an activator in this work for assisting fluoranthene (FLT) removal, with Fe(III) addition overcoming the solution pH constraint on FLT removal in the SPC/FeS process. At the optimal chemical dosages, SPC/FeS (pH = 3.0) and SPC/FeS/Fe(III) (pH = 5.7) processes removed approximately 100% and 92.8% of FLT, respectively. Based on the results of scavenging trials and electron paramagnetic resonance analysis, HO• was the dominant reactive oxygen species in FLT removal by SPC/FeS and SPC/FeS/Fe(III) processes. Dissolved oxygen (DO) played a crucial role in FLT removal, and SPC/FeS/Fe(III) process was more dependent on DO than SPC/FeS process. Both processes overcame the limitation of Cl – on the application of SPC-induced oxidation process. In actual groundwater experiments, 95.5% of FLT was removed in SPC/FeS/Fe(III) process at an initial solution pH of 5.0. In soil slurry trials, 12 h was the optimal reaction time for FLT removal, and the SPC/FeS and SPC/FeS/Fe(III) processes degraded 85.6% and 86.7% of FLT, respectively. In conclusion, the FeS-activated SPC-induced oxidation process offers perspectives for PAHs contaminated field decontamination and contributes to the optimization of modern oxidation methods.
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2022
·Vol. 9
·期 25
·2202591
·
IF 17.521
Pei Liu,Yangxue Fu,Fulong Wei,Teng Ma,Jingli Ren,Zhanjun Xie,Shanzheng Wang,Jinjin Zhu,Lianbin Zhang,Juan Tao,Jintao Zhu
Photodynamic therapy (PDT) is an emerging technique for treating tumors. Especially, topical administration of photosensitizers (PSs) is more favorable for superficial tumor treatments with low systematic phototoxicity. Yet, ineffective migration of PSs to targeted tumor tissues and rapid consumption of O 2 during PDT greatly limit their effects. Herein, PS-loaded microneedle (MN) patches with O 2 propellant for a deeper and faster transdermal delivery of PS and improved PDT by embedding sodium percarbonate (SPC) into dissolving poly(vinyl pyrrolidone) MNs are presented. It is shown that SPC in the MNs can react with surrounding fluid to generate gaseous oxygen bubbles, forming vigorous fluid flows and thus greatly enhancing PS of chlorin e6 (Ce6) penetration in both hydrogel models and skin tissues. Reactive oxygen species (ROS) in hypoxic breast cancer cells (4T1 cells) are greatly increased by rapid penetration of PS and relief of hypoxia in vitro, and Ce6-loaded SPC MNs show an excellent cell-killing effect. Moreover, lower tumor growth rate and tumor mass after a 20-d treatment in tumor-bearing mice model verify the improved PDT in gaseous oxygen-droved delivery of PS. This study demonstrates a facile yet effective route of MN delivery of PSs for improved PDT in hypoxic tumor treatment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yuanxi Huang,Lingjun Bu,Yangtao Wu,Shumin Zhu,Shiqing Zhou,Zhou Shi,Dionysios D. Dionysiou
UV/sodium percarbonate (UV/SPC) advanced oxidation process is an efficient and green technology to remove contaminants of emerging concern (CECs), with the simultaneous formation of hydroxyl radical ( • OH) and carbonate radical (CO 3 •− ). This study investigated the degradation of eight CECs in UV/SPC process, including phenol, atrazine, bisphenol A, ibuprofen, sulfadiazine, acetaminophen, carbamazepine, and diuron. A model was established to simulate the experimental results, which shows that both • OH and CO 3 •− played crucial roles in UV/SPC process, and the steady-state concentrations of CO 3 •− were much higher than that of • OH. The higher concentration compensates for the low reactivity of CO 3 •− with CECs and the loss of • OH depleting by CO 3 •− . Also, the Hammett constants decreased linearly with increasing natural logarithms of rate constants, indicating the selectivity of CO 3 •− with electron-donating substituents. In real water, CEC degradation was significantly inhibited due to the competition for light absorption from background compounds and scavenging of free radicals, especially CO 3 •− , by water matrix. Further, demethylation, decarbonylation, hydroxylation, amino oxidation, and quinonization were proposed as the main reactions for CEC degradation in UV/SPC process. The minimum electrical energy per order (EE/O) was calculated as 0.152 kWh m −3 , with SPC dose of 0.138 mM and UV intensity of 2.02 × 10 -7 Einstein L −1 s −1 .
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）