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Radical innovation breakthroughs of biodegradation of plastics by insects:history,present and future perspectives

Frontiers of Environmental Science & Engineering 2024年第6期18卷 127-165页

作者： Shan-Shan Yang Wei-Min Wu Federica Bertocchini Mark Eric Benbow Suja P.Devipriya Hyung Joon Cha Bo-Yu Peng Meng-Qi Ding Lei He Mei-Xi Li Chen-Hao Cui Shao-Nan Shi Han-Jun Sun Ji-Wei Pang Defu He Yalei Zhang Jun Yang Deyi Hou De-Feng Xing Nan-Qi Ren Jie Ding Craig S.Criddle State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China Department of Civil and Environmental Engineering William&Cloy Codiga Resource Recovery CenterStanford UniversityStanfordCA 94305USA Plasticentropy rue Thiers 28Reims 51100France Department of Entomology and Department of Osteopathic Medical Specialties Michigan State UniversityEast LansingMI 48824USA School of Environmental Studies Cochin University of Science and TechnologyKochi 682022India Department of Chemical Engineering Pohang University of Science and TechnologyPohang 37673Republic of Korea School of Environmental Science and Engineering Tongji UniversityShanghai 200092China China Energy Conservation and Environmental Protection Group CECEP Talroad Technology Co.Ltd.Beijing 100096China School of Ecological and Environmental Sciences East China Normal UniversityShanghai 200241China Research Institute for Frontier Science Beihang UniversityBeijing 100191China School of Environment Tsinghua UniversityBeijing 100084China

Insects damaging and penetrating plastic packaged materials has been reported since the *** innovation breakthroughs of plastic biodegradation have been initiated since the discovery of biodegradation of plastics by Tenebrio molitor larvae in 2015 followed by Galleria mellonella in *** we review updated studies on the insect-mediated biodegradation of *** biodegradation by insect larvae,mainly by some species of darkling beetles(Tenebrionidae)and pyralid moths(Pyralidae)is currently a highly active and potentially transformative area of *** the past eight years,publications have increased explosively,including discoveries of the ability of different insect species to biodegrade plastics,biodegradation performance,and the contribution of host and microbiomes,impacts of polymer types and their physic-chemical properties,and responsible enzymes secreted by the host and gut *** date,almost all major plastics including polyethylene(PE),polypropylene(PP),polyvinyl chloride(PVC),polyethylene terephthalate(PET),polyurethane(PUR),and polystyrene(PS)can be biodegraded by *** and ten other insect species representing the Tenebrionidae and Pyralidae *** biodegradation processes are symbiotic reactions or performed by synergistic efforts of both host and gut-microbes to rapidly depolymerize and biodegrade plastics with hourly *** digestive ezymens and bioreagents screted by the insects play an essential role in plasatic biodegradation in certain species of Tenebrionidae and Pyralidae *** research on the insect itself,gut microbiomes,transcriptomes,proteomes and metabolomes has evaluated the mechanisms of plastic biodegradation in *** conclude this review by discussing future research perspectives on insect-mediated biodegradation of plastics.

关键词： plastics Biodegradation Insects Gut microbiomes Enzymes

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Green synthesis of ZSM-5 using silica fume and catalytic co-cracking of lignin and plastics for production of monocyclic aromatics

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Chinese Journal of Chemical Engineering 2024年第1期65卷 92-105页

作者： Hongbing Fu Yufei Gu Tianhua Gao Fuwei Li Hengshuo Gu Hucheng Ge Yuke Liu Zhixia Li Hongfei Lin Jiangfei Cao School of Chemistry and Chemical Engineering Guangxi UniversityNanning 530004China Guangxi Bossco Environmental Protection Technology Co. Ltd.Nanning 530007China School of Environmental and Chemical Engineering Zhaoqing UniversityZhaoqing 526000China

ZSM-5 with hierarchical pore structure was synthesized by a simple two-step hydrothermal crystallization from silica fume without using any organic ammonium *** synthesized ZSM-5 were oval shaped particles with a particle size about 2.0 μm and weak acid-dominated with proper Brønsted(B)and Lewis(L)acid *** ZSM-5 was used for catalytic co-cracking of n-octane and guaiacol,lowdensity polyethylene(LDPE)and alkali lignin(AL)to enhance the production of benzene,toluene,ethylbenzene and xylene(BTEX).The most significant synergistic effect occurred at n-octane/guaiacol at 1:1 and LDPE/AL at 1:3,under the condition,the achieved BTEX selectivity were 24%and 33%(mass)higher than the calculated values(weighted average).The highest BTEX selectivity reached 88.5%,which was 3.7%and 54.2%higher than those from individual cracking LDPE and *** synthesized ZSM-5 exhibited superior catalytic performance compared to the commercial ZSM-5,indicating potential application prospect.

关键词： Silica fume ZSM-5 Catalytic co-cracking plastics Lignin

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Tailoring the Properties of Polyhydroxyalkanoates from plastics to Elastomers via Stereoselective Copolymerizations of rac-β-Butyrolactone and β-Propiolactone

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Chinese Journal of Chemistry 2024年第9期42卷 963-972页

作者： Haoran Zhang JiaojiaoQin Xiaoyan Tang Beijing National Laboratoryfor Molecular Sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCenterfor Soft Matter Science and EngineeringCollegeof Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Poly(3-hydroxybutyrate),a crucial member of the large biodegradable polyhydroxyalkanoate family,suffers from its *** enhance its performance,we employed a straightforward approach involving the ring-opening copolymerization of racemic-β-butyrolactone(rac-β-BL)andβ-propiolactone(β-PL)using the syndio-selective amino-alkoxy-bis(phenolate)-yttrium complex as a catalyst,thanks to the excellent ductility of poly(3-hydroxypropionate).Control over the rac-β-BL/β-PL feeding ratios and polymerization time yielded random or block copolymers with tunable thermal and mechanical properties comparable to traditional fossil-based ***,we achieved one-pot synthesis of hard-soft-hard triblock copolymers by exploiting monomers’different copolymerization rates and a bifunctional initiator,thus transforming polyhydroxyalkanoates from hard and tough plastics to soft and ductile thermoplastic elastomers.

关键词： Ring-opening(co-)polymerization Biodegradable polymers Polyhydroxyalkanoates Copolymers plastics Elastomers

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The leaching of additive-derived flame retardants(FRs) from plastics in avian digestive fluids:The significant risk of highly lipophilic FRs

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Journal of Environmental Sciences 2019年第11期31卷 200-207页

作者： Huiying Guo Xiaobo Zheng Shuling Ru Xiaojun Luo Bixian Mai State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China College of Resources and Environment South China Agricultural University Guangzhou 510642 China University of the Chinese Academy of Sciences Beijing 100049 China

The exposure to plastic debris and associated pollutants for wildlife is of urgent concern,but little attention has been paid on the transfer of plastic additives from plastic debris to *** the present study,the leaching of incorporated flame retardants (FRs),including polybrominated diphenyl ethers (PBDEs),alternative brominated FRs (AFRs),and phosphate flame retardants (PFRs),from different sizes of recycled acrylonitrile-butadiene-styrene (ABS) polymer were investigated in avian digestive *** impact of co-ingested sediment on the leaching of additive-derived FRs in digestive fluids was also *** the recycled ABS,BDE 209 (715 μg/g) and 1,2-bis(2,4,6-tribromophenoxy) ethane (BTBPE,1766 μg/g) had the highest concentrations among all target *** leaching proportions of FRs were higher in finer sizes of *** leaching proportions of FRs from recycled ABS increased with elevated logKow of *** the tests with coexisted ABS and sediment,hexato deca-BDEs,BTBPE,and decabromodiphenyl ethane (DBDPE) migrated from ABS to sediment,which resulted in the less bioaccessible fractions of these FRs in gut *** lipophilic chemicals tended to be adsorbed by sediment from *** results suggest the migration of additive-derived FRs from plastics to other indigestible materials in digestive *** findings in this study provide insights into the transfer of additive-derived FRs from plastics to birds,and indicate the significant contribution of FR-incorporated plastics to bioaccumulation of highly lipophilic FRs.

关键词： Recycled plastics Digestive fluids Flame retardants Leaching

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Thermal and catalytic pyrolysis of a synthetic mixture representative of packaging plastics residue

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Frontiers of Chemical Science and Engineering 2020年第2期14卷 288-303页

作者： Simona Colantonio Lorenzo Cafiero Doina De Angelis Nicolo MIppolito Riccardo Tuffi Stefano Vecchio Ciprioti Department for Sustainability ENEA—Casaccia Research CenterRome 00123Italy Department of Chemical Materials and Environmental EngineeringSapienza University of RomeRome 00184Italy Department of SBAI Sapienza University of RomeRome 00161Italy

A synthetic mixture of real waste packaging plastics representative of the residue from a material recovery facility(plasmix)was submitted to thermal and catalytic *** thermogravimetry experiments coupled with Fourier transform infrared spectroscopy were performed to evaluate the effects of the catalysts on the polymers’degradation temperatures and to determine the main compounds produced during *** thermal and catalytic experiments were conducted at 370℃,450℃ and 650℃ using a bench scale *** oil,gas,and char yields were analyzed and the compositions of the reaction products were *** primary aim of this study was to understand the effects of zeolitic hydrogen ultra stable zeolite Y(HUSY)and hydrogen zeolite socony mobil-5(HZSM5)catalysts with high silica content on the pyrolysis process and the products’*** showed that HUSY significantly reduces the degradation temperature of all the polymers—particularly the ***5 had a significant effect on the degradation of polyethylene due to its smaller pore *** balance showed that oil is always the main product of pyrolysis,regardless of the process ***,all pyrolysis runs performed at 370℃ were *** use of either zeolites resulted in a decrease in the heavy oil fraction and the prevention of wax *** has the best performance in terms of the total monoaromatic yield(29 wt-%at 450℃),while HZSM5 promoted the production of gases(41 wt-%at 650℃).Plasmix is a potential input material for pyrolysis that is positively affected by the presence of the two tested zeolites.A more effective separation of polyethylene terephthalate during the selection process could lead to higher quality pyrolysis products.

关键词： packaging plastics waste plasmix pyrolysis zeolite catalyst degradation temperature

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Improving hydrocarbons production via catalytic co-pyrolysis of torrefied-biomass with plastics and dual catalytic pyrolysis

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Chinese Journal of Chemical Engineering 2022年第2期35卷 196-209页

作者： Peter Keliona Wani Likun Huiyan Zhang Yuyang Fan Key Laboratory of Thermal Energy Conversion and Control Ministry of Education Southeast UniversityNanjing 210096China Department of Mechanical Engineering Juba UniversityJubaP.O.Box 82South Sudan

To increase the low yield and selectivity of aromatic hydrocarbons during the biomass pyrolysis process,we torrefied the biomass and then co-pyrolyzing with plastics such as high-density polyethylene(HDPE),polystyrene(PS),ethylene-vinyl acetate(EVA)and polypropylene(PP)and also single and dual catalyst layouts were investigated by Py-GC/*** results showed that non-catalytic fast pyrolysis(CFP)of raw bagasse(RBG)generated no *** torrefaction non-CFP of torrefied bagasse(TBG)generated low aromatic *** that torrefaction would enhance the proportion of aromatics during the pyrolysis *** CFP of TBG_(200℃)and TBG_(240℃)over ZSM-5 produced the total aromatic yield of 1.96 and 1.88 times higher,respectively,compared to non-CFP of ***,the addition of plastic could increase H/Ceff ratio of the mixture,consequently,increase the yield of aromatic *** the various torrefied-bagasse/plastic mixtures,the CFP of TBG/EVA(7:3 ratio)mixture generated the highest the total aromatic yield of 7.7 times more than the CFP of TBG *** dual catalyst layout could enhance the yield of aromatics *** dual-catalytic co-pyrolysis of TBG_(200℃)/plastic(1:1)ratio over USY(ultra-stable Y zeolite)/ZSM-5,improved the total aromatics yield by 4.33 times more than the catalytic pyrolysis of TBG_(200℃)alone over ZSM-5 *** above results showed that the yield and selectivities of light aromatic hydrocarbons can be improved via catalytic co-pyrolysis and dual catalytic co-pyrolysis of torrefied-biomass with plastics.

关键词： Torrefaction Biomass plastics Co-Pyrolysis Dual-catalyst Aromatics Selectivity

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Multivariate Analysis of Laser-Induced Breakdown Spectroscopy for Discrimination between Explosives and plastics

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Chinese Physics Letters 2012年第4期29卷 89-91页

作者： WANG Qian-Qian LIU Kai ZHAO Hua School of Optoelectronics Beijing Institute of TechnologyBeijing 100081

A method to distinguish explosives from plastics using laser-induced breakdown spectroscopy is discussed.A model for classification with cross-validation theory is built based on the partial least-square discriminant analysis *** types of plastics and one explosive are used as samples to test the *** experimental results demonstrate that laser-induced breakdown spectroscopy has the capacity to discriminate explosives from plastics combined with chemometrics *** results could be useful for prospective research of laser-induced breakdown spectroscopy on the differentiation of explosives and other materials.

关键词： plastics materials plastics

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Novel technology of electroless Ni-W-P on plastics and its interface behavior

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中国有色金属学会会刊：英文版 2004年第z1期14卷 136-139页

作者： WANG Tian-xu HU Yong-jun MENG Ji-long College of Mechanical Engineering South China University of TechnologyGuangzhou 510641 China College of Mechanical Engineering South China University of TechnologyGuangzhou 510641 China College of Mechanical Engineering South China University of TechnologyGuangzhou 510641 China

The electroless Ni-W-P coatings on polyoxymethylene(POM) were prepared. The POM was pretreated by hot spraying Al powder on it. Before the electroless Ni-W-P deposition, the POM with Al coating was flash plated in alkaline bath. The mechanism of Ni-W-P deposition was studied and the technology was optimized. The XRD analysis shows that the "as-deposited" Ni-W-P plating has mixed crystalline structure. The hardness value of deposits is more than HV700. The abrasion resistance of deposits is six times more than that of POM. Bending test was used to determine the cohesion between the deposits and the substrates. SEM was used to study the behavior of surface abrasion and interface bonding condition. The reason for the excellent cohesion was interpreted.

关键词： plastics electroless plating interface Ni alloy

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Degradable plastics Are Vulnerable to Cracks

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Engineering 2021年第5期7卷 624-629页

作者： Xuxu Yang Jason Steck Jiawei Yang Yecheng Wang Zhigang Suo John A.Paulson School of Engineering and Applied Sciences Kavli Institute for Bionano Science and TechnologyHarvard UniversityCambridgeMA 02138USA State Key Laboratory of Fluid Power and Mechatronic System Key Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceDepartment of Engineering Mechanics&Center for X-MechanicsZhejiang UniversityHangzhou 310027China

A plastic may degrade in response to a *** kinetics of degradation have long been characterized by the loss of weight and strength over *** methods of gross characterization,however,are misleading when plastic degrades ***,we study heterogeneous degradation in an extreme form:the growth of a crack under the combined action of chemistry and *** applied load opens the crack,exposes the crack front to chemical attack,and causes the crack to outrun gross *** studied the crack growth in polylactic acid(PLA),a polyester in which ester bonds break by *** cut a crack in a PLA film using scissors,tore it using an apparatus,and recorded the crack growth using a camera through a *** our testing range,the crack velocity was insensitive to load but was sensitive to humidity and *** findings will aid the development of degradable plastics for healthcare and sustainability.

关键词： Degradation plastics Hydrolysis pH Cracking

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Theoretical prediction for Young's modulus and yield strength of high-density foamed plastics

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Science China(Technological Sciences) 1998年第3期41卷 271-279页

作者：卢子兴高镇同 Research Center of Solid Mechanics Beijing University of Aeronautics and Astronautics

The mechanical properties of high density foamed plastics under uniaxial load are investigated and the relations of shear modulus and yield strength with porosity are derived from the self consistent model. The results show that not only can the same shear moduli with the ones derived from the three phase spheroidal model be obtained with the present model, but also the theoretical yield strength of high density foamed plastics can be obtained. By comparing the present results with those of other empirical models as well as the available experimental data, it is shown that the yield strength of high density foamed plastics can be predicted quite well with this model.

关键词： foamed plastics yield strength self consistent model.

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