Qian Guangren

Shanghai University | SHU · School of Envionmental & Chemical Engineering

Producing a low-cost catalyst by a low-cost method is one of the hottest topics in the field of catalytic oxidization of volatile organic compounds (VOCs). In this work, a catalyst formula with a low-energy requirement was optimized in the powdered state, and verified in the monolithic state. An effective MnCu catalyst was synthesized at a temperat...

Electron paramagnetic resonance (EPR) is the only technique that provides direct detection of free radicals and samples that contain unpaired electrons. Thus, EPR had an important potential application in the field of selective catalytic reduction of nitrogen oxide (SCR). For the first time, this work reviewed recent developments of EPR in characte...

Purification of volatile sulfur compounds is a hot topic since these malodorous gases with low odor thresholds are generated in both community and industry. Adsorption is an effective method, but adsorbent regeneration is usually difficult because of the strong bond between adsorbent and malodorous gases. In this work, an amine-grafted metal–organi...

Catalyst is the key to effective selective catalytic reduction of nitrogen oxide, and developing catalyst is always one of the hottest topics in both field of industry and academy. In order to realize an industrial application, one catalyst must grow on a specific support. However, seldom work compared the difference of catalyst growth with or with...

The collection of hazardous waste from small and micro enterprises (SMEs) is a bottleneck in hazardous waste risk management. Due to the small amount of hazardous waste generated, SMEs have to pay 5–10 times the treatment price of large-scale enterprises to entrust the disposal center for treatment. This disproportional collection price usually ind...

Shaped catalysts are actually much more practical than powdered catalysts, and are of great technological importance. However, only few investigations showed the feasibility of fabricating efficient shaped catalysts. For the first time, this work synthesized a membrane catalyst from manganese slag and Teflon filter. The obtained catalyst converted...

Chemical compositions, polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs) profiles and heavy metals (HMs) leachability of medical waste fly ash (MWFA) from 17 thermochemical treatment facilities in eight Chinese provinces were first investigated. Large-scale and extended monitoring revealed high chloride and Zn contents and similar PCDD/Fs cong...

Policy is a powerful tool determining solid-waste treatment and disposal. In 2019, China carried out the “garbage-classification policy” in 46 cities. So-called dry garbage is then separated from municipal solid waste and treated alone by incineration. This work investigated the influence of the policy on contents and leaching characterizations of...

Recently, a large amount of incinerated sewage sludge ash (ISSA) has been produced with the popularization of sludge incineration technology. And it needs to be disposed of properly to reduce the environmental impact. In this work, the ISSA is used as a partial substitution of raw materials in the production of Portland cement clinker. Moreover, th...

In China, the impact of waste disposal facilities is always a cause of concern for the government and the public. Laogang Municipal Waste Disposal Area (LMDA), Shanghai, one of the largest municipal waste disposal areas in the world was selected as case in this study, and it was attempted to analyze the changes in the surface water quality, and map...

Hypothesis Manganese-based catalysts attract extensive attentions in low-temperature selective catalytic reduction (SCR) of nitrogen oxide (NOx). However, seldom work focuses on the existence of free radicals and their roles in SCR. Experiments In this work, electron paramagnetic resonance spectrometer and density functional theory are combined to...

A utilization network optimization model toward sustainable municipal solid waste incineration fly-ash (IFA) management is first established with the integration of hybrid life cycle assessment (HLCA) and multiobjective optimization (MOO), taking Shanghai as a case. For technology selection, we focus on two emerging nonthermally processed IFA utili...

In this study, we verified that ZnO/MCB EPFRs promote cell proliferation and migration, impedes cell apoptosis in lung cancer. Furthermore, we found that ZnO/MCB could influence the expression of miRNAs (miR-18a and miR-34a). In vivo, ZnO/MCB and ZnO EPFRs can reduce the weight and survival rate of BALB/c male mice more than that of BALB/c female m...

The catalytic production of bio-oil can potentially solve the impending fossil fuel depletion crisis. Two practical problems related to bio-oil are the yield and quality, which are determined by the catalyst. Until recently, little work has focused on the relationship between biomass, catalyst, yield, and quality. To cover this deficiency, this wor...

Vitrification technology has been widely used to treat hazardous solid waste to form molten glasses. But the heavy metals with active valence in the glass matrix are unstable and easy to dissolve, easily leading to potential environmental risks. Based on the laboratory simulated preheating feed mode, this study first explored the feasibility of usi...

Purification of ultra-low-concentration malodorous gases from community and factory is a worldwide hot topic. Although adsorption is one of the most effective methods, seldom reports purified malodorous gas with a concentration lower than 1 ppm. In this work, metal (Zn, Al, Cu, Cr, Ce, Mn, and Fe) exchanged ZSM-5 are synthesized, and applied in rem...

Mn-based catalyst is widely investigated in selective catalytic reduction (SCR) of nitrogen oxide (NO), and shows high NO conversion at low temperatures. However, most reports emphasize on powder catalyst instead of monolithic one. In this work, Mn-containing cordierite honeycomb and CeWFe co-doping comparisons were synthesized and applied in SCR....

Focusing on the great potential of municipal solid waste incineration (MSWI) residues in the construction sector, the applications of recycling MSWI residues in construction materials are discussed in this review. Incineration is a promising method for managing the great quantity of municipal solid waste (MSW). Careful handling of incineration resi...

Large quantity of rivers have disappeared during rapid urbanization in China’s Yangtze River Delta, and it is difficult to define the changes in the river network owing to its high dense and complex reticular structure. Shanghai’s Pudong New Area (SPNA) is a typical area of rapid urbanization in the delta. A Comprehensive River-network Indicator Sy...

Electroplating sludge is classified as hazardous waste, but it is also a potential raw resource since it contains plenty of transition metals. However, the component of electroplating sludge is unstable, which hinders recycling. This work investigates the possibility to synthesize spinels with stable catalytic performances by different electroplati...

Detoxification and utilization of municipal solid waste incineration fly ash (MSWIFA) with low temperature pretreatment, low environmental burden and low cost have become more and more popular topics in the world. Based on integrated hybrid life cycle assessment, this study compares the environmental and economic performance of MSWIFA low-temperatu...

Humus is an important parameter to affect the environmental fate of arsenic (As) in tailing soil. According to the batch and column experiment, the effects of humus (HS) including humic acid (HA), fulvic acid (FA) on the As release and basic properties of soil were studied in the soil from a mining region. In addition, HA was modified by 3-mercapto...

In rapidly developing countries, it is imperative to study the changes in municipal solid waste (MSW) generation for planning waste management and treatment. This study took the largest 11 economies in the world as cases, comprising half of the global population, analyzed the variations of definition of MSW among these economies. Based on the Envir...

Electroplating sludge had a high content of heavy metals and usually lacked high-value-added utilization. In this work, Cu-containing sludge was used to synthesize a spinel catalyst, which was applied in catalytic oxidization of toluene. As a result, the sludge-derived spinel removed 50% of toluene (1000 ppm, 9600 h⁻¹) at 280 °C. In comparison, a r...

Anaerobic ammonium oxidation (anammox) receives considerable attentions from researchers because it could achieve biological denitrification from wastewater with low carbon resource input. During anammox, hydrazine oxidoreductase (HZO) plays a critical role in the biological conversion of ammonium (NH4⁺) to dinitrogen gas. In this study, we constru...

Methyl mercaptan (MM) is a typical malodorous gas, and low-concentration MM makes human body uncomfortable. Although activated carbon and its modifications were widely investigated, seldom work focused on the synergetic effect between surface functional group and metallic site. To cover this insufficiency, this work modified a commercial activated...

Transition-metal catalysts were widely used in selective catalytic reduction of nitrogen oxide (NOx). However, seldom work reported the influence of adsorptive abilities of a catalyst for NH3 and NOx on the activity. This work synthesized oxide-state and chelation-state catalysts, and compared them in adsorptive abilities and catalytic activities....

One major challenge for the construction of waste incineration facilities (WIF) is the local opposition from the public, which is commonly known as the not-in-my-back-yard (NIMBY) conflict. In this article, we introduce the signaling game model for the first time to understand how information asymmetry will affect the decision of the public and the...

Phosphorus (P) recovery from sewage sludge (SS) have been regarded as an effective method of P recycling. The effects of incineration temperature, incineration time, and chlorine additives on the distribution of P speciation during sludge incineration were studied. Moreover, the reactions between model compounds AlPO4 and additives (MgCl2 and CaCl2...

In Shanghai, the biggest metropolis in China, the source classification of domestic waste began in the 1990s but achieved little success over the past thirty years. Surprisingly, the compulsory classification provision of Shanghai residents' domestic waste since 2019 has been successful. In this work, the overall status, and challenges of municipal...

One of the hottest topics in the field of selective catalytic reduction (SCR) of nitrogen oxide is to develop a catalyst with low cost, low toxicity, high activity, and good selectivity for N2 to replace high-cost and high-toxic vanadium catalyst. In this work, low-cost spinel MFe2O4 (M = Cu, Mn, and Zn) were synthesized, and applied in SCR. MnFe2O...

Waste electrical and electronic equipment (WEEE) plastics not only pollute the environment, but are challenging to treat in an environmentally friendly manner. Biodegradation by insect larvae is potentially an eco-friendly method to treat WEEE plastics, but information about the feeding preference of insect larvae to WEEE plastics is lacking. In th...

Non‐noble metal photocatalysts have received widespread attention with the popularity of photocatalytic hydrogen evolution. Here, a brand‐new series of ZnFe2O4/Al‐MCM‐41 photocatalysts were synthesized with a simple hydrothermal strategy and analyzed through various characterizations. The results revealed that 40 % loading of Zinc ferrite (ZnFe2O4)...

Environmentally persistent free radicals (EPFRs) are generated in the combustion processes of solid waste and can cause adverse influences on human health, especially lung diseases. Lung cancer is one of the most serious malignancies in recent years, which the global deaths rate is about 1.6 million every year. However, the mechanism of EPFRs on lu...

Chromium-containing electroplating sludge usually lacked proper disposal and recycling. High-temperature melting was a technology aiming to form glass-phase slag for the stabilizations of heavy metals. This work investigated the possibility of forming perovskite-like phase by chromium-containing sludge using high-temperature melting. The formed mat...

Electroplating sludge (ES) is a solid waste, which is rich in transition-metal content. However, ES is usually treated or disposed, instead of recycling. For the first time, this work synthesized an electrocatalyst from ES, and applied it in catalytic nitrogen reduction reaction (NRR) to produce ammonia under ambient conditions. As a result, the ES...

Hypothesis Transition metal supported TiO2 is one of the hottest catalysts in the field of selective catalytic reduction (SCR) of nitrogen oxides. Various formulas have been put forward for an enhanced activity. However, seldom work emphasizes on easy and fast screening of an effective catalyst. Experiments In this work, Diffuse Reflection Fourier...

This study measured the environmental impacts from three same-size wastewater treatment systems, specifically activated sludge, a constructed wetland, and a high rate algal pond. Detailed data inventories were employed using SimaPro 9 software to calculate the entire consequences by ReCiPe 2016 and Greenhouse Gas Protocol method. The environmental...

The micro-morphology of catalyst played an important role in the selective catalytic reduction of nitrogen oxide. For the first time, this work investigated the relationship among catalytic activity, catalyst-catalyst distance, and catalyst-reductant distance. Three metal–organic frameworks with different morphologies were applied in the catalysis....

Fe(III) bio-reduction provides a prospect of applying the iron redox cycle to nitrate remediation in the aquatic environment. The objective of this study was to realize multiple nitrate removals in the system containing Shewanella oneidensis MR-1 (S. oneidensis MR-1) and ferrihydrite or magnetite. The results showed that with three periods of 30 mg...

High-value-added utilization of heavy-metal-containing waste is important for the sustainable development because most resources are non-renewable. In this work, an effective catalyst for volatile organic compounds was synthesized from manganese slag. Furthermore, the powder catalyst was coated on cordierite, and the obtained monolithic catalyst (0...

The study of non-noble metal photocatalysts provides practical significance for hydrogen evolution applications. Herein, new Cd0.5Zn0.5S/Ni(OH)2catalysts were fabricated through simple hydrothermal and precipitation methods. The photocatalytic performance of the Cd0.5Zn0.5S/Ni(OH)2composites under visible light was significantly improved, which was...

Disposal of the increasing amount of the plastics from waste electrical and electronic equipment (WEEE) is of great concern. In this study, biodegradation feasibility of waste rigid polyurethane (WRPU), waste polystyrene (WPS) and waste acrylonitrile-butadiene-styrene (WABS) from WEEE by Galleria mellonella larvae were investigated. The cumulative...

The overall status of MSW management in Africa is evaluated systematically, in sight of life cycle indicators such as MSW generation daily per capita, collection and treatment methods. The relations of life cycle indictors with driving factors, including economic level, geographical location, urbanization and solid waste legislation process, are di...

In this study, the permeable-reactive-barrier (PRB) assisted electrokinetic (EK) was used to remediate As/Cr Co-contaminated soil, aiming to explore the optimal remediation conditions and the migration of As/Cr. The effects of PRB active substance, PRB location, voltage gradient and running time on the migration and transformation of Cr and As in s...

Vitrification is an effective solidification method for heavy metal-containing wastes. However, most investigations focused on the formation of glass matrix. Seldom report discussed the influence of co-existing crystals on heavy metal stabilizations. In this work, Ca-Al-Si phase was formed in the glass matrix by adjusting the composition of feeding...

Magnetic harvesting of microalgae by magnetic nanoparticles (MNPs) depends on the interface interactions between microalgal cells and MNPs, therefore it’s important to understand these interface interactions. In this effort, we discussed the application and principles of microalgae magnetic harvesting via MNPs synthesized by the coprecipitation met...

This paper comprehensively evaluates the status of municipal solid waste (MSW) management in 54 African countries, with particular attention on MSW generation, collection, disposal, and related legislations from economical and geographical perspectives. By non-spatial data analysis model, the controlling factors that affect the daily MSW generation...

With the development of industry, sustainable use of natural resources has become a worldwide hot topic. Heavy metal–containing sludge (HMS) is a hazardous waste after wastewater treatment. At present, HMS is still treated by landfill or landfill after incineration. Considering the components, HMS usually contains various heavy metals and organic c...

The threshold effect in the relationship between impervious surfaces and water quality has been a focus in past decades, but little attention has been paid to how the threshold effect changes during a rapid urbanization period. This study reveals the temporal variation of threshold effect in the relationship between the percentage of total impervio...

Activated carbon was a widely-used adsorbent. However, it was usually classified as a hazardous waste after saturation adsorption for one pollution. For the first time, this article reported a regeneration method for the activated carbon saturated with methyl mercaptan. The regenerated carbon was partially transformed into graphene-oxide fragment w...

Carbon deposition usually hinders catalytic activity in one catalysis. In this work, carbon-deposition influence was investigated on selective catalytic reduction (SCR) of nitric oxide (NO) by a theoretical−experimental method. Density-functional-theory calculations showed that carbon deposition increased adsorption energy of NO on oxide. For examp...

Free radical plays an important role in catalytic reactions. However, until recently, seldom article discussed the formation and trapping of free radical in catalytic reduction of nitric oxide (NO). For the first time, free–radical formation and its influence on the catalytic activity were investigated by Electron Paramagnetic Resonance. A metal–or...

A novel composite has been successfully synthesized in situ via a coprecipitation method about the coupling of Cu2(OH)2CO3 with oxidized carbon nitride (O-g-C3N4) forming Cu2(OH)2CO3/O-g-C3N4 (CuCN) heterojunction structure. The as-prepared composites were characterized by diverse means. The CuCN composite with 3:5 mass ratio of Cu2(OH)2CO3 to O-g-...

Ammonia is widely used as the reductant in selective catalytic reduction of nitrogen oxide. However, ammonia slip results in environmental problems. In this work, a metal-organic framework was synthesized and applied in catalytic reduction of nitric oxide without using ammonia. As a result, the catalyst removed 100% of nitric oxide at 400 °C. A two...

Interface regulation is a hot topic in fabricating effective photocatalyst by different semiconductors. Bismuth oxychloride (BiOCl) and layered double hydroxide (LDH) are typical layered materials. For the first time, the effective configuration was revealed between BiOCl and LDH to increase visible-light photocatalytic activity. When LDH grew on B...

Flue gas desulphurization (FGD) gypsum had broad application prospects in soil, but the trace heavy metals in FGD gypsum directly determine the severity of secondary pollution. In this work, we focused on arsenic in FGD gypsum for 70 samples from Chinese 20 provinces, investigating the characteristics of distribution and leaching by total contents,...

Ti-bearing blast furnace slag was usually recycled by acid leaching. For the first time, a catalyst was synthesized from the slag by wet ball-milling. During this process, no waste was produced. When the activated slag was used in selective catalytic reduction of nitric oxide (NO), 80.5 ± 1.2% of NO (990 ppm) was removed at 350 °C. The catalyst ste...

Hydrothermal instability restricts performances of silica-based catalysts, which have wide applications in both industry and environment. For the first time, plasma-thermal slag was revealed to be a catalyst with a born hydrothermal stability in selective catalytic reduction of nitric oxide. The slag catalyst removed 98.5% of NO with a high N2 sele...

The ability of thiol-modified humic acids (HAs) to release arsenic in tailings soil after being modified with different sulfur-containing reagents were significantly improved. The structure and physicochemical properties of humic acid (HA) before and after thiol-modification were characterized. The 3-MPTS-HA treated with 3-mercaptopropyltrimethoxys...

For the first time, a heterostructure was synthesized by bismuth oxychloride and Zn-Cr layered double hydroxide. A novel membrane photocatalyst was then obtained by dispersing the heterostructure in polyvinylidene fluoride. Under visible light, the membrane removed 99.9% of Rhodamine B after 240 min. Under sun light, the removal even reached over 8...

In particulate matter, organic precursors generate environmentally persistent free radicals (EPFRs) on metal oxides and attract worldwide attentions in health risk assessment and environmental protection. For the first time, we determined characteristics and formation processes of EPFRs evolved from different organic precursors on PbO particulate....

Nowadays, a large quantity of Light Emitting Diodes (LEDs) have been produced and updated with the development of optoelectronic industry. At the same time, many waste LEDs are discarded. However, there are many metals and non-metals in waste LEDs, which may cause secondary pollution and waste of resources if disposed improperly. In this study, sol...

In the field of selective catalytic reduction of nitrogen oxide, metal-species and loading-amount regulations were usually investigated to increase the catalytic activity. For the first time, this work investigated the influence of metal coordination state on the catalytic activity. Catalysts with different coordination states were compared by expe...

Ore-washing sludge is a typical solid waste from metallurgical industry and needs proper treatment. For the first time, this kind of sludge was used as a stabilizer for heavy metal-contaminated kaolin. As a result, after Cu (3655 mg/kg) and Cr (430 mg/kg)-polluted kaolins were mixed with the stabilizer, only 7.98 ml/L of Cr and 8 mg/L of Cu were le...

Given the abundance of iron on the Earth, nitrogen-contaminated water is a key region for the biogeochemical cycling of N and Fe under anaerobic conditions. However, the biogeochemical processes between N and Fe remain uncertain, as do the understanding of nitrogen-transformation pathways. In this study, the nitrogen balance for the nitrite removal...

Petrochemical wastewaters treatment represents a serious challenge due to the high toxicity and complex chemical components. In this study, the biodegradability, mineralization behaviors and methane productivity of eight different types of petrochemical wastewaters were evaluated in series of semi-continuous bioreactors. Methane production strongly...

The injection of oxidants is one of the useful remediation technologies for eliminating hydrogen sulfide (H2 S) and ammonia (NH3 / NH 4 + ) in aquatic sediments. In the current work, the impact of calcium nitrate injection on the release of heavy metals associated with phosphate was evaluated in a column test of sediment with overlying water at...

Efficient activation of peroxydisulfate (PDS, S2O82-) was achieved in this study by a hybrid of reduced graphene oxide (rGO) and layered double hydroxide (LDH). The peroxydisulfate was intercalated into the interlayers of LDH that was combined with rGO. This sample contributed to 92.4 % of phenol (PhOH) removal at 25 °C with a PDS loading amount of...

Peroxydisulfate (PDS) activation has attracted much attention for the treatment of drinking water systems. In this work, Ni-doped MgAl layered double hydroxides (Ni-LDHs, Ni:Mg = 1:100 to 1:1, molar ratio) were prepared for the activation of PDS via intercalation. Compared with the case without Ni, doping with Ni resulted in much higher phenol degr...