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Since the first works introducing the aluminum intercalated clay family in the early 1970s, interest in the synthesis of Pillared InterLayered Clays (PILC) has increased tremendously, especially research into their properties and energetic and environmental applications. After our comprehensive reviews and book on the synthesis and catalytic applications of these materials, new references have appeared in the literature and the interest in this field is continuously increasing. The aim of this Special Issue is to collect the recent advances developed considering this family of solids.

clays --- Al-PILC --- pillared clays --- scale up --- pillaring solution --- Keggin ion --- reutilization --- Keggin polycation --- concentrated media --- microwave radiation --- pillared montmorillonite --- AlNi-PILC --- Pd-Ce --- catalytic combustion --- benzene --- TPD/TPSR --- ZnO-TiO2/delaminated montmorillonite --- heterostructures --- Ag-coating --- solar photocatalytic activity --- water purification --- cadmium --- chitosan --- modification --- 13X molecular sieve --- removal --- dye remediation --- adsorption --- azo dye --- wastewater --- pillared porous phosphate heterostructures --- isotherm --- sericite --- thermal modification --- acid activation --- sodium modification --- montmorillonite/hydrotalcite composite --- montmorillonite/titania composite --- organoclay --- inverse micelle --- Mn-Al mixed oxide --- combustion catalysts --- ciprofloxacin --- smectite --- pillared clay --- keggin-like mixed Al/Fe polyoxocation --- mineralogical composition --- catalytic wet peroxide oxidation --- mesosilica --- methyl orange --- palygorskite

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A rapid growth in various industries and domestic activities is resulting in a huge amount of wastewater. Various types of wastewaters, such as textile, municipal, dairy, pharmaceutical, swine, and aquaculture, etc., are produced regularly by respective industries. These wastewaters are rich in nutrient content and promote eutrophication in the ecosystem and pose a threat to flora and fauna. According to an estimate, eutrophication causes losses of almost 2 billion US dollars annually, affecting real estate and fishing activities. Treatment of wastewater is a costly process and recently wastewater treatment with simultaneous energy production has received more attention. Microorganisms can be used to recover nutrients from wastewater and produce bioenergy (biodiesel, biohydrogen, bioelectricity, methane, etc.). A better understanding of the composition of various types of wastewaters and the development of technologies like anaerobic digestion (AD), microbial fuel cell (MFC), and microbial electrolysis cell (MEC) can help to make wastewater-based biorefinery a reality. To provide an overall overview to students, teachers, and researchers on wastewater to bioenergy technology ten chapters are included in this book.

Environmental science, engineering & technology --- effluent --- anaerobic digestion --- incineration --- Co-pyrolysis --- syngas --- biodiesel --- biofuel --- biogas --- MEC --- bio-hydrogen --- manure --- digestion --- cybersecurity --- cybercrime --- legislation --- policy --- systems thinking --- water --- DEA --- regional difference --- energy utilization efficiency --- carbon emission --- cost --- database --- treatment --- wastewater --- Web of Science --- biogas digestion --- hydrogen sulfide --- ferric oxide --- waterworks sludge --- biofilm --- lattice Boltzmann method --- cellular automata --- individual-based model --- chitin --- electricity generation --- halotolerant --- microbial fuel cell --- seafood processing --- microbial electrolysis cells --- chronological development --- wastewater to hydrogen --- scale-up --- life-cycle assessment --- MEC commercialization --- microalgae --- wastewater treatment --- nutrient removal --- effluent --- anaerobic digestion --- incineration --- Co-pyrolysis --- syngas --- biodiesel --- biofuel --- biogas --- MEC --- bio-hydrogen --- manure --- digestion --- cybersecurity --- cybercrime --- legislation --- policy --- systems thinking --- water --- DEA --- regional difference --- energy utilization efficiency --- carbon emission --- cost --- database --- treatment --- wastewater --- Web of Science --- biogas digestion --- hydrogen sulfide --- ferric oxide --- waterworks sludge --- biofilm --- lattice Boltzmann method --- cellular automata --- individual-based model --- chitin --- electricity generation --- halotolerant --- microbial fuel cell --- seafood processing --- microbial electrolysis cells --- chronological development --- wastewater to hydrogen --- scale-up --- life-cycle assessment --- MEC commercialization --- microalgae --- wastewater treatment --- nutrient removal

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This Special Issue is result of a call for papers of the Section Industrial Crystallization of MDPI’s scientific journal Crystals. It addresses scientists and engineers active in research and process & product development in life-science industries (e.g. pharmaceuticals, fine chemicals and biotechnology products) and bulk chemical applications (e.g. desalination) as well. The contributions comprise several fundamental and application-oriented facets of crystallization providing an overview of industrially relevant subjects in the field. Main issues cover phase equilibria and solid-state behavior of crystalline compounds, crystal shape and size and related measurement techniques. Melt and solution crystallization are considered specifically addressing contemporary aspects of continuous crystallization and process intensification.

Technology: general issues --- K-MER zeolite --- synthesis parameter --- morphology --- cyanoethylation of methanol --- catalyst --- multi-dendrite motion --- CA-LBM model --- dendritic growth --- natural convection --- numerical simulation --- melt crystallization --- freeze crystallization (FC) --- recycling --- ionic liquid (IL) --- solid–liquid equilibrium --- cellulose --- nanocrystals --- modification --- poly(butylene succinate) --- crystallization --- kinetics --- chirality --- deracemization --- preferential crystallization --- racemic conglomerate --- phase behavior --- polymorphism --- aryl glycerol ethers --- spherical BaTiO3 nanoparticle --- hydrothermal synthesis --- nanoscale TiO2 seed --- crystal growth --- dielectric property --- curcumin --- purification --- ternary mixture of curcuminoids --- reverse osmosis --- membrane fouling --- gypsum scaling --- fluorescent-tagged polyacrylate --- fluorescence --- scale inhibition mechanisms --- solvent effect --- crystal habit --- aspect ratio --- molecular dynamics (MD) --- surface structure --- amine --- biocatalysis --- enzyme --- process intensification --- enantioselective --- fluidized bed --- continuous --- chiral separation --- racemate resolution --- enantiomer --- asparagine monohydrate --- fine chemicals --- continuous crystallization --- crystal shape --- process design --- DTB crystallizer --- scale up --- L-serine --- L-alanine --- enantiomers --- isomorphic miscibility --- thermal expansion --- PXRD --- TRPXRD --- optical measurement techniques --- crystal size measurement --- inline probe --- crystal needles --- microcrystals --- microplate --- grid scanning --- in situ data collection --- n/a --- solid-liquid equilibrium

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Biofuels have recently attracted a lot of attention, mainly as alternative fuels for applications in energy generation and transportation. The utilization of biofuels in such controlled combustion processes has the great advantage of not depleting the limited resources of fossil fuels while leading to emissions of greenhouse gases and smoke particles similar to those of fossil fuels. On the other hand, a vast amount of biofuels are subjected to combustion in small-scale processes, such as for heating and cooking in residential dwellings, as well as in agricultural operations, such as crop residue removal and land clearing. In addition, large amounts of biomass are consumed annually during forest and savanna fires in many parts of the world. These types of burning processes are typically uncontrolled and unregulated. Consequently, the emissions from these processes may be larger compared to industrial-type operations. Aside from direct effects on human health, especially due to a sizeable fraction of the smoke emissions remaining inside residential homes, the smoke particles and gases released from uncontrolled biofuel combustion impose significant effects on the regional and global climate. Estimates have shown the majority of carbonaceous airborne particulate matter to be derived from the combustion of biofuels and biomass. “Production of Biofuels and Numerical Modelling of Chemical Combustion Systems” comprehensively overviews and includes in-depth technical research papers addressing recent progress in biofuel production and combustion processes. To be specific, this book contains sixteen high-quality studies (fifteen research papers and one review paper) addressing techniques and methods for bioenergy and biofuel production as well as challenges in the broad area of process modelling and control in combustion processes.

microalgae --- hydrothermal liquefaction --- pretreatment --- low O and N biocrude --- biodiesel --- esterification --- free fatty acids --- glycerol --- waste cooking oil --- Computational Fluid Dynamics --- two-stroke --- dual-fuel engine --- simulation --- pre-combustion chamber --- internal combustion engine --- particulate matter emissions --- biomorphic silicon carbide --- vegetal waste --- diesel particulate filter --- biocrude --- metal-oxide catalyst --- bioethanol --- dilute acid pretreatment --- enzymatic hydrolysis --- olive stones --- Pachysolen tannophilus --- response surface methodology --- compression ignition --- direct injection --- cryogenic gas --- diesel engines --- dual fuel engines --- natural gas --- greenhouse gas emissions --- particulate matter --- carotenoids --- extremophiles --- microalgal biotechnology --- eucalyptus kraft lignin --- tree leaf --- pellet --- additive --- biofuel --- circular economy --- piston bowl --- alternative fuel --- vanes --- emulsified biofuel --- combustion --- gasification --- olive --- olive oils --- olive-pruning debris --- olive pomaces --- pyrolysis --- biogas --- environmental impact --- life cycle assessment --- olive pomace --- sustainability --- TGA --- hemicellulose --- cellulose --- lignin --- pseudocomponent kinetic model --- biomass --- culture --- scale-up --- Phaeodactylum tricornutum --- burning characteristics --- fatty acid methyl ester --- added water content --- fuel structure --- distillation temperature --- layered double hydroxide --- toluene steam reforming --- tar --- Ni-based catalyst --- hydrotalcite --- hydrogen production --- n/a

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This Special Issue is result of a call for papers of the Section Industrial Crystallization of MDPI’s scientific journal Crystals. It addresses scientists and engineers active in research and process & product development in life-science industries (e.g. pharmaceuticals, fine chemicals and biotechnology products) and bulk chemical applications (e.g. desalination) as well. The contributions comprise several fundamental and application-oriented facets of crystallization providing an overview of industrially relevant subjects in the field. Main issues cover phase equilibria and solid-state behavior of crystalline compounds, crystal shape and size and related measurement techniques. Melt and solution crystallization are considered specifically addressing contemporary aspects of continuous crystallization and process intensification.

K-MER zeolite --- synthesis parameter --- morphology --- cyanoethylation of methanol --- catalyst --- multi-dendrite motion --- CA-LBM model --- dendritic growth --- natural convection --- numerical simulation --- melt crystallization --- freeze crystallization (FC) --- recycling --- ionic liquid (IL) --- solid–liquid equilibrium --- cellulose --- nanocrystals --- modification --- poly(butylene succinate) --- crystallization --- kinetics --- chirality --- deracemization --- preferential crystallization --- racemic conglomerate --- phase behavior --- polymorphism --- aryl glycerol ethers --- spherical BaTiO3 nanoparticle --- hydrothermal synthesis --- nanoscale TiO2 seed --- crystal growth --- dielectric property --- curcumin --- purification --- ternary mixture of curcuminoids --- reverse osmosis --- membrane fouling --- gypsum scaling --- fluorescent-tagged polyacrylate --- fluorescence --- scale inhibition mechanisms --- solvent effect --- crystal habit --- aspect ratio --- molecular dynamics (MD) --- surface structure --- amine --- biocatalysis --- enzyme --- process intensification --- enantioselective --- fluidized bed --- continuous --- chiral separation --- racemate resolution --- enantiomer --- asparagine monohydrate --- fine chemicals --- continuous crystallization --- crystal shape --- process design --- DTB crystallizer --- scale up --- L-serine --- L-alanine --- enantiomers --- isomorphic miscibility --- thermal expansion --- PXRD --- TRPXRD --- optical measurement techniques --- crystal size measurement --- inline probe --- crystal needles --- microcrystals --- microplate --- grid scanning --- in situ data collection --- n/a --- solid-liquid equilibrium