I came over some papers on batch and bulk removal of substances but the experimental section was same for both and none of the papers showed any small single difference between the two though used as distinct terms.
Dear Sir. Concerning your issue about the difference between bulk and batch removal processes . The influence of the bulk concentration (C o), contact time (t) and different adsorbent masses (m) of zeolite on the removal of heavy metal were evaluated. The present investigation is devoted to batch as well as bulk removal of Rose Bengal. Under preliminary batch studies, adsorption isotherm measurements and kinetic studies were carried out, while for the bulk removal, a glass column was used as a fixed bed adsorber made up of Bottom Ash. Attempts were also made for the recovery of the dye from the exhausted Bottom Ash column by eluting dilute NaOH. I think the following below links may help you in your analysis:
Dear Mohammad Ali Gabris , yes you are the two terms are really confusing in some cases. As to my understanding, the major difference between the two is the volume of processing. To explain the differences more, lets take waste treatment as an example.
In a batch treatment system, a certain volume of waste is gathered, treated by chemical/physical/biological means, and discharged.
Bulk is related with large quantities. The basic goal of bulk process is to treat bulk wastes on a large enough scale that costs are kept as low as possible.
Your answer makes sense, but in that case the bulk one can't be performed at labs or reported and the industrial process is way more complicated and can't rely on applying a sorbent or single material