Dajun Ren
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View article: Research on the Mechanism of Scale Inhibitors and Development of Enhanced Scale Inhibition Technology
Research on the Mechanism of Scale Inhibitors and Development of Enhanced Scale Inhibition Technology Open
In order to effectively solve the problem of membrane fouling, scale inhibitors are often used for scale inhibition. However, the scale inhibition mechanism of scale inhibitors has not been clearly explained, and the scale inhibition effec…
View article: Salt Stress Adaptations in Soybean Involve Alterations in Pre‐mRNA Processing
Salt Stress Adaptations in Soybean Involve Alterations in Pre‐mRNA Processing Open
Salt stress can seriously affect plant survival. To adapt to salt stress, plants can alter gene expressions and/or pre‐mRNA processing patterns, or both. Previous studies could not comprehensively profile stress‐responsive pre‐mRNA process…
View article: Synthesis of novel zeolite-supported zinc-cobalt bimetallic catalyst by co-precipitation-calcination method for efficient activation of persulfate to degrade tetracycline hydrochloride
Synthesis of novel zeolite-supported zinc-cobalt bimetallic catalyst by co-precipitation-calcination method for efficient activation of persulfate to degrade tetracycline hydrochloride Open
Addressing the challenges posed by the high cost and limited efficiency of traditional Chinese medicine wastewater treatment, the development of a cost-effective and highly efficient catalyst for activating persulfate (PMS) to degrade orga…
View article: An Evaluation of the Corrosion Inhibition Performance of Chitosan Modified by Quaternary Ammonium Salt for Carbon Steel in Stone Processing Wastewater
An Evaluation of the Corrosion Inhibition Performance of Chitosan Modified by Quaternary Ammonium Salt for Carbon Steel in Stone Processing Wastewater Open
Chitosan was used as the raw material. A quaternization reaction was carried out between 2,3-epoxypropyltrimethylammonium chloride and water-soluble chitosan to prepare quaternary ammonium salt water-soluble chitosan (QWSC), and its corros…
View article: The study of laccase immobilization optimization and stability improvement on CTAB-KOH modified biochar
The study of laccase immobilization optimization and stability improvement on CTAB-KOH modified biochar Open
In this paper, cetyltrimethylammonium bromide (CTAB)-KOH modified biochar (CKMB) was used to immobilize laccase by adsorption method (laccase@CKMB). Based on the results of the single-factor experiments, the optimal loading conditions of l…
View article: Comparative study on the adsorption of lead ions by kaolin loaded chitosan by different modification methods
Comparative study on the adsorption of lead ions by kaolin loaded chitosan by different modification methods Open
The adsorption effect of two modified kaolin-chitosan composites prepared by different modification methods (cross-linking method (GL-CS) and click reaction method (TGL-CS)) on lead ion wastewater was studied. The structure of TGL-CS has a…
View article: A novel Cu/HAP@sBC composite as a persulfate activator for the removal of 2,4,6-trichlorophenol
A novel Cu/HAP@sBC composite as a persulfate activator for the removal of 2,4,6-trichlorophenol Open
As a typical chlorophenol, 2,4,6-trichlorophenol (2,4,6-TCP) is highly toxic and difficult to degrade. Here, we prepared a novel material (Cu/HAP@sBC) by combining copper-based hydroxyapatite with biochar, which removes 2,4,6-TCP via activ…
View article: Ion exchange synthesis of copper-based hydroxyapatite for the catalytic degradation of phenol
Ion exchange synthesis of copper-based hydroxyapatite for the catalytic degradation of phenol Open
Hydroxyapatite (HAP) is a material renowned for its exceptional capabilities in adsorbing and exchanging heavy metal ions, making it a widely employed substance within the environmental domain. This study aims to present a novel material, …
View article: Assessment of Potentially Toxic Elements Pollution and Human Health Risks in Polluted Farmland Soils around Distinct Mining Areas in China—A Case Study of Chengchao and Tonglushan
Assessment of Potentially Toxic Elements Pollution and Human Health Risks in Polluted Farmland Soils around Distinct Mining Areas in China—A Case Study of Chengchao and Tonglushan Open
This research study investigates the extent of heavy metal pollution and pollution trends in agricultural soil in mining areas during different time periods. A total of 125 soil samples were collected from two mining areas in China, the Ch…
View article: Study on the removal of Pb(II) from water by coated sulfur-modified nanoscale zero-valent iron
Study on the removal of Pb(II) from water by coated sulfur-modified nanoscale zero-valent iron Open
Being prepared by a liquid-phase reduction method, sulfur-modified nanoscale zero-valent iron (S-nZVI) was then coated with sodium alginate (SA) to form gel beads (SAS-nZVI) which are capable of removing Pb(II) from water. SAS-nZVI was cha…
View article: A novel carbonized derivative of Fe-Cu bimetallic organic framework (Fe-Cu-MOF@C): preparation and optimization
A novel carbonized derivative of Fe-Cu bimetallic organic framework (Fe-Cu-MOF@C): preparation and optimization Open
A carbon derivative with Fe-Cu bimetallic organic framework (Fe-Cu-MOF@C) was prepared by microwave synthesis and pyrolysis. Using potassium persulfate (PS) as oxidant and 2,4-dichlorophenol (2,4-DCP) as target pollutant, the optimal prepa…
View article: Evaluating Fouling Control and Energy Consumption in a Pilot-Scale, Low-Energy POREFLON Non-Aerated Membrane Bioreactor (LEP-N-MBR) System at Different Frequencies and Amplitudes
Evaluating Fouling Control and Energy Consumption in a Pilot-Scale, Low-Energy POREFLON Non-Aerated Membrane Bioreactor (LEP-N-MBR) System at Different Frequencies and Amplitudes Open
Continual aeration, a fouling control strategy that causes high energy consumption, is the major obstacle in the deployment of membrane bioreactors (MBRs) for wastewater treatment. In recent years, a technology has been developed which ado…
View article: Immobilization of laccase on chitosan functionalized halloysite nanotubes for degradation of Bisphenol A in aqueous solution: degradation mechanism and mineralization pathway
Immobilization of laccase on chitosan functionalized halloysite nanotubes for degradation of Bisphenol A in aqueous solution: degradation mechanism and mineralization pathway Open
As a hazardous organic chemical raw material, Bisphenol A (BPA) has attracted a great deal of scientific and public attention. In this study, the chitosan functionalized halloysite nanotubes immobilized laccase (lac@CS-HNTs) was prepared b…
View article: Adsorption and removal of direct red 31 by Cu-MOF: optimization by response surface
Adsorption and removal of direct red 31 by Cu-MOF: optimization by response surface Open
Cu(PABA) is a Cu-based MOF material assembled from Cu2+ and the organic ligand p-aminobenzoic acid (PABA). Cu (PABA) was synthesized by a solvothermal method, characterized and applied to the adsorption of direct red 31 dye (DR-31). The ef…
View article: The study of laccase immobilization optimization and stability improvement on CTAB-KOH modified biochar
The study of laccase immobilization optimization and stability improvement on CTAB-KOH modified biochar Open
Background Although laccase has a good catalytic oxidation ability, free laccase shows a poor stability. Enzyme immobilization is a common method to improve enzyme stability and endow the enzyme with reusability. Adsorption is the simplest…
View article: Effects of Electronegativity and Hydration Energy on the Selective Adsorption of Heavy Metal Ions by Synthetic NaX Zeolite
Effects of Electronegativity and Hydration Energy on the Selective Adsorption of Heavy Metal Ions by Synthetic NaX Zeolite Open
The adsorption capacity of synthetic NaX zeolite for Pb2+, Cd2+, Cu2+ and Zn2+ in single and multi-component systems were investigated. The effects of electronegativity and hydration energy on the selective adsorption, as well as potential…
View article: Vertical distribution and sources of PAHs in different agricultural soil profiles: a case study in Jianghan Plain, Central China
Vertical distribution and sources of PAHs in different agricultural soil profiles: a case study in Jianghan Plain, Central China Open
PAHs are one of the persistent organic pollutants (POPs) and widely distributed in nature. This study aimed to investigate the distribution and origination of polycyclic aromatic hydrocarbons (PAHs) in 3 different agricultural soil profile…
View article: The Study of Laccase Immobilization Optimization and Stability Improvement on CTAB-KOH Modified Biochar
The Study of Laccase Immobilization Optimization and Stability Improvement on CTAB-KOH Modified Biochar Open
Background : Although laccase has a good catalytic oxidation ability, free laccase shows a poor stability. Enzyme immobilization is a common method to improve enzyme stability and endow the enzyme with reusability. Adsorption is the simple…
View article: Study on the Adsorption of Heavy Metals in Sludgeby Calcium Alginate Cross-LinkedZeolite Microspheres
Study on the Adsorption of Heavy Metals in Sludgeby Calcium Alginate Cross-LinkedZeolite Microspheres Open
This study successfully prepared a calcium alginate cross-linked zeolite microsphere, a heavy metal adsorbent, to reduce the harmful heavy metal content in sludge and improve the efficiency of sludge resource utilization.The effects of tem…
View article: The Study of Laccase Immobilization Optimization and Stability Improvement on CTAB-KOH Modified Biochar
The Study of Laccase Immobilization Optimization and Stability Improvement on CTAB-KOH Modified Biochar Open
Background: In this paper, cetyltrimethylammonium bromide (CTAB)-KOH modified biochar (CKMB) was used to immobilize laccase by adsorption method (laccase@CKMB). Based on the results of the single-factor experiments, the optimal loading con…
View article: Study on improving the stability of adsorption-encapsulation immobilized Laccase@ZIF-67
Study on improving the stability of adsorption-encapsulation immobilized Laccase@ZIF-67 Open
Laccase (Trametes versicolor) was immobilized onto/into zeolite imidazolate framework-67 (ZIF-67) for the first time, materials were performed by assisting one-pot synthesis strategy in aqueous solution at room temperature. The resulting l…
View article: The study on adsorption behavior of 2,4-DCP in solution by biomass carbon modified with CTAB-KOH
The study on adsorption behavior of 2,4-DCP in solution by biomass carbon modified with CTAB-KOH Open
In this study, rice straw was used to prepare biomass carbon, which was modified with KOH and cetyltrimethylammonium bromide (CTAB) to obtain modified biomass carbon (MBC). The biomass carbon (BC) before and after modification was characte…
View article: Intrinsic soil property effects on Cd phytotoxicity to Ligustrum japonicum ‘Howardii’ expressed as different fractions of Cd in forest soils
Intrinsic soil property effects on Cd phytotoxicity to Ligustrum japonicum ‘Howardii’ expressed as different fractions of Cd in forest soils Open
A better comprehensive understanding of the influence of soil/solution properties on cadmium (Cd) phytotoxicity is essential for soil Cd ecological risk assessment. The toxicity of soil spiked Cd to Ligustrum japonicum 'Howardii' seedling …