while the making and using of various embodiments of the present invention are discussed in detail below , it should be appreciated that the present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts . the specific embodiments discussed herein are merely illustrative of specific ways to make and use the invention and do not delimit the scope of the invention . to facilitate the understanding of this invention , a number of terms are defined below . terms defined herein have meanings as commonly understood by a person of ordinary skill in the areas relevant to the present invention . terms such as “ a ”, “ an ” and “ the ” are not intended to refer to only a singular entity , but include the general class of which a specific example may be used for illustration . the terminology herein is used to describe specific embodiments of the invention , but their usage does not delimit the invention , except as outlined in the claims . the term “ landfill ” as used herein refers to a site for the disposal of waste materials by burial . the term “ landfills ” may include internal waste disposal sites wherein a producer of waste carries out their own waste disposal at the place of production as well as sites used by many producers . many landfills are also used for other waste management purposes , such as the temporary storage , consolidation and transfer or processing of waste material ( sorting , treatment , or recycling ). a “ landfill ” also may refer to ground that has been filled in with soil and rocks instead of waste materials , so that it can be used for a specific purpose , such as for building houses . the term “ methane ” as used herein denotes not only pure methane , but also to natural gas compositions which are mainly methane but may contain minor proportions of other gases , for example helium , ethane and hydrogen sulfide . the term “ methane ” as used herein also extends to so - called synthetic natural gas i . e ., methane produced by chemical synthesis and intended to be used as a replacement for natural gas . “ methane ” may also refer to liquified natural gas ( lng ) as it is produced either domestically or overseas . lng is made by the pressurized and cooling liquifaction process as it is performed on natural gas coming out of the ground . the term “ exhaust gas ” is used herein to denote a gaseous mixture , which results from combustion of a gaseous fuel with an oxidant . an oxidant may consist of air . an exhaust gas , resulting from combustion of a gaseous fuel with air , comprises nitrogen and carbon dioxide , if the gaseous fuel comprises at least one hydrocarbon . in addition to carbon dioxide and nitrogen , an exhaust gas may comprise oxygen , nitrogen oxides , water vapor , mechanical contaminants and other constituents . as used herein the term “ algae ” represents a large , heterogeneous group of primitive photosynthetic organisms which occur throughout all types of aquatic habitats and moist terrestrial environments . nadakavukaren et al ., botany . an introduction to plant biology , 324 - 325 , ( 1985 ). the term “ algae ” as described herein is intended to include the species selected from the group consisting of the diatoms ( bacillariophytes ), green algae ( chlorophytes ), blue - green algae ( cyanophytes ), golden - brown algae ( chrysophytes ), haptophytes , freshwater algae , saltwater algae , amphipleura , amphora , chaetoceros , cyclotella , cymbella , fragilaria , hantzschia , navicula , nitzschia , phaeodactylum , thalassiosira , ankistrodesmus , botryococcus , chlorella , chlorococcum , dunaliella , monoraphidium , oocystis , scenedesmus , nanochloropsis , tetraselmis , chlorella , dunaliella , oscillatoria , synechococcus , boekelovia , isochysis and pleurochysis . as used herein the term “ biodiesel and biofuel ” oils encompass mixtures of petrochemical base diesel oils and renewable raw materials , although the ratio of petrochemical motor fuel to renewable raw materials in the mixture can vary and is not defined . the term “ biodiesel ” is also used for a variety of ester - based oxygenated fuels made from vegetable oils , fats , greases , or other sources of triglycerides . it is a nontoxic and biodegradable substitute and supplement for petroleum diesel . the term “ transesterification ” as used herein refers to the reaction of exchanging an alkoxy group of an ester compound with another alcohol . the reaction may be acid or base catalyzed . in the present invention the transesterification process for preparation of a biodiesel involves an initial reaction of an oil , fat or grease with a solution of lithium base in a monohydric aliphatic alcohol to produce fatty alkyl esters and lithium alkaline glycerin . optionally a co - solvent may be used during this transesterification reaction . the co - solvent is one in which all of the reactants are soluble so that the transesterification reaction occurs in one phase . the transesterification may be performed in a single reaction , or alternatively , the fatty ester portion may be reacted two or more times with the addition of further alcohol or further lithium base to ensure complete conversion . following the transesterification reaction ( s ), the lithium alkaline glycerin , which is readily separated from the alkyl ester product , for example , by gravity separation in a reparatory funnel , is used to saponify fatty alkyl compounds to produce desalted glycerin and lithium soaps . the fatty alkyl esters , desalted glycerin and lithium soap may all be isolated and purified ( if necessary ) and used as , for example , commercial products . the present invention teaches the recycle of the exhaust gases from the combustion engine . the exhaust gases are primarily water , co 2 and co at elevated temperatures . the recycle stream heats the landfill and provides moisture . additionally , co 2 will release additional methane as has been reported in coal mines . nutrient gases may be added . waste methane is flared in most landfills . fig1 shows a traditional landfill process 100 for generating methane gas . the landfill 102 comprises organic nutrients that produce methane that exits the landfill 102 through a gas flare or a vertical flare stack ( pipe ) 104 . the methane gas 106 is flared ( 108 ) at the tip of the flare stack 104 . in some landfills methane is used to generate electricity via combustion engine coupled to generator . in this case the efficiency of the process depends on the amount of methane produced . the amount of methane can vary greatly . in a stable landfill the amount of methane produced depends on the temperature of the landfill , the moisture in the landfill and the amount of nutrients available . for example methane production can drop at night because of the drop in temperature in the landfill . this invention teaches the recycle of the exhaust gases from the combustion engine . the exhaust gases are primarily water , co 2 and co at elevated temperatures . the recycle stream heats the landfill and provides moisture . additionally , co 2 will release additional methane as has been reported in coal mines . nutrient gases may be added . fig2 shows a zero - discharge landfill 200 of the present invention . the landfill 202 generates methane gas 206 that passes through a gas flare or a vertical flare stack ( pipe ) 204 to run a methane powered generator 208 . electricity 210 generated by the operation of the generator 208 is used to run an electrical grid 220 . the exhaust gas 212 , generated from the operation of the generator 208 is fed to an algal photo - bioreactor 214 to grow and cultivate algae . the cultivated algae 216 are fed to the landfill 202 to produce methane 206 . a fraction of the cultivated algae 216 is fed to a biodiesel production unit 218 . the biodiesel 222 produced is collected in a collection vessel 224 . it is contemplated that any embodiment discussed in this specification can be implemented with respect to any method , kit , reagent , or composition of the invention , and vice versa . furthermore , compositions of the invention can be used to achieve methods of the invention . it will be understood that particular embodiments described herein are shown by way of illustration and not as limitations of the invention . the principal features of this invention can be employed in various embodiments without departing from the scope of the invention . those skilled in the art will recognize , or be able to ascertain using no more than routine experimentation , numerous equivalents to the specific procedures described herein . such equivalents are considered to be within the scope of this invention and are covered by the claims . all publications and patent applications mentioned in the specification are indicative of the level of skill of those skilled in the art to which this invention pertains . all publications and patent applications are herein incorporated by reference to the same extent as if each individual publication or patent application was specifically and individually indicated to be incorporated by reference . the use of the word “ a ” or “ an ” when used in conjunction with the term “ comprising ” in the claims and / or the specification may mean “ one ,” but it is also consistent with the meaning of “ one or more ,” “ at least one ,” and “ one or more than one .” the use of the term “ or ” in the claims is used to mean “ and / or ” unless explicitly indicated to refer to alternatives only or the alternatives are mutually exclusive , although the disclosure supports a definition that refers to only alternatives and “ and / or .” throughout this application , the term “ about ” is used to indicate that a value includes the inherent variation of error for the device , the method being employed to determine the value , or the variation that exists among the study subjects . as used in this specification and claim ( s ), the words “ comprising ” ( and any form of comprising , such as “ comprise ” and “ comprises ”), “ having ” ( and any form of having , such as “ have ” and “ has ”), “ including ” ( and any form of including , such as “ includes ” and “ include ”) or “ containing ” ( and any form of containing , such as “ contains ” and “ contain ”) are inclusive or open - ended and do not exclude additional , unrecited elements or method steps . the term “ or combinations thereof ” as used herein refers to all permutations and combinations of the listed items preceding the term . for example , “ a , b , c , or combinations thereof ” is intended to include at least one of : a , b , c , ab , ac , bc , or abc , and if order is important in a particular context , also ba , ca , cb , cba , bca , acb , bac , or cab . continuing with this example , expressly included are combinations that contain repeats of one or more item or term , such as bb , aaa , mb , bbc , aaabcccc , cbbaaa , cababb , and so forth . the skilled artisan will understand that typically there is no limit on the number of items or terms in any combination , unless otherwise apparent from the context . all of the compositions and / or methods disclosed and claimed herein can be made and executed without undue experimentation in light of the present disclosure . while the compositions and methods of this invention have been described in terms of preferred embodiments , it will be apparent to those of skill in the art that variations may be applied to the compositions and / or methods and in the steps or in the sequence of steps of the method described herein without departing from the concept , spirit and scope of the invention . all such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the spirit , scope and concept of the invention as defined by the appended claims .