US20130091913A1 - Method of making an acid-absorbing biosolid composition - Google Patents
Method of making an acid-absorbing biosolid composition Download PDFInfo
- Publication number
- US20130091913A1 US20130091913A1 US13/275,153 US201113275153A US2013091913A1 US 20130091913 A1 US20130091913 A1 US 20130091913A1 US 201113275153 A US201113275153 A US 201113275153A US 2013091913 A1 US2013091913 A1 US 2013091913A1
- Authority
- US
- United States
- Prior art keywords
- acid
- absorbing
- biosolid
- composition
- making
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000010801 sewage sludge Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000010802 sludge Substances 0.000 claims abstract description 14
- 239000002028 Biomass Substances 0.000 claims abstract description 13
- 230000002378 acidificating effect Effects 0.000 claims abstract description 12
- 239000010805 inorganic waste Substances 0.000 claims abstract description 10
- 239000003337 fertilizer Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000010521 absorption reaction Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000002699 waste material Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000010815 organic waste Substances 0.000 claims description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000011630 iodine Substances 0.000 claims description 2
- 229910052740 iodine Inorganic materials 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000011435 rock Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims 2
- 239000007789 gas Substances 0.000 description 13
- 239000000047 product Substances 0.000 description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052920 inorganic sulfate Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 239000010819 recyclable waste Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/25—Coated, impregnated or composite adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
Definitions
- the present invention relates to recycled biosolids, biomasses and the like, and particularly to a method of making an acid-absorbing biosolid composition for removing acidic gasses from gas streams produced by the chemical treatment of sewage sludge.
- the method of making an acid-absorbing biosolid composition provides a method for the use of recycled materials to produce an acid-absorbing composition that may subsequently be recycled for use as a fertilizer after absorbing the acidic gas.
- the method includes the steps of: collecting a sewage sludge; drying the sewage sludge to remove water therefrom to form dried sludge; adding hydrochloric acid to the dried sludge to form a liquid intermediary product; heating the liquid intermediary product to produce a dried porous biomass; and mixing inorganic waste material with the dried porous biomass to produce an acid-absorbing biosolid composition.
- the acid-absorbing biosolid composition may be placed in a gas flow to absorb an acidic component therefrom; and then used as fertilizer following absorption of the acidic component from the gas flow.
- the method of making an acid-absorbing biosolid composition provides a method for the use of recycled materials to produce an acid-absorbing composition that may subsequently be recycled for use as a fertilizer after absorbing the acidic gas.
- sewage sludge is collected.
- the sewage sludge forms the primary component of the recycled acid-absorbing biosolid composition.
- the sewage sludge should have a pH of about 4.0. If the collected sludge does not naturally have a pH of about 4.0, then the sewage sludge may be treated with an appropriate quantity of acid or base to bring the pH level to about 4.0.
- the sewage sludge is then dried to completely remove water therefrom. This forms a dried sludge product.
- the drying is preferably performed through the application of heat in a temperature range of about 600° C. to about 1,000° C.
- hydrochloric acid is added to the dried sludge to form a liquid intermediary product.
- the treatment with the hydrochloric acid, or any other suitable type of acid may include stirring or any other suitable type of agitation required to adequately mix the acid with the sludge. This mixing is preferably performed until such time as the pH of the mixture assumes a steady value of between about 1.0 and 4.0.
- the liquid intermediary product is then, once again, heated to produce a dried porous biomass.
- the hydrochloric acid is added to increase and activate pores in the dried sludge. These pores are used in the absorption of acidic pollution gases.
- the dried porous biomass is mixed with an inorganic waste material to produce the acid-absorbing biosolid composition.
- the inorganic waste material constitutes about 45 wt % of the acid-absorbing biosolid composition.
- the inorganic material may be magnesium waste, calcium waste, iron waste, iodine waste, rocks, sand, or combinations thereof.
- organic waste materials such as wood powder, may also be added. It should be understood that any suitable type of waste material may be utilized, such as recyclable wastes produced by distillation plants.
- the acid-absorbing biosolid composition is placed in a gas flow to absorb an acidic component therefrom.
- An example of such use is placing the acid-absorbing biosolid composition in a wet gas flow and extracting a sulfur-containing component from the wet gas flow, such as hydrogen sulfide or sulfur dioxide.
- the acid-absorbing biosolid composition oxidizes the sulfur-containing gases, forming organic and inorganic sulfates of the type used in fertilizers.
- the acid-absorbing biosolid composition may be used as a fertilizer.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The method of making an acid-absorbing biosolid composition provides a method for the use of recycled materials to produce an acid-absorbing composition that may then be recycled as a fertilizer after absorbing the acid. The method includes the steps of: collecting sewage sludge; drying the sewage sludge to remove water therefrom to form dried sludge; adding hydrochloric acid to the dried sludge to form a liquid intermediary product; heating the liquid intermediary product to produce a dried porous biomass; and mixing inorganic waste material with the dried porous biomass to produce the acid-absorbing biosolid composition. Thereafter, the acid-absorbing biosolid composition may be placed in a gas flow to absorb an acidic component therefrom; and then recycled for use as fertilizer following absorption of the acidic component from the gas flow.
Description
- 1. Field of the Invention
- The present invention relates to recycled biosolids, biomasses and the like, and particularly to a method of making an acid-absorbing biosolid composition for removing acidic gasses from gas streams produced by the chemical treatment of sewage sludge.
- 2. Description of the Related Art
- The production of useful biosolids and biomasses from sewage sludge is known. In one such prior method, dewatered sewage sludge is dried to form a granulated organic fertilizer, which is then pyrolized to form a porous end product. Although this and similar fertilizers may also be used for a wide range of applications, they suffer from manufacturing methods that require them to maintain a basic pH throughout their manufacture and usage. This requires that the manufacturing method be relatively complex and inefficient in terms of both cost and manufacturing time. Given that it is desirable to recycle sewage sludge in order to decrease overall energy expenditures, and also to decrease chemical treatments of the sludge, which may have a negative environmental impact, a process that does not require such careful maintenance of a basic pH throughout would be desirable. Furthermore, it is desirable to provide a substance that removes hydrogen sulfide, sulfur dioxide, and other sulfur-containing gases from the gases produced during the chemical treatment of sewage sludge to reduce air pollution that might otherwise contribute to acid rain,
- Thus, a method of making an acid-absorbing biosolid composition solving the aforementioned problems is desired.
- The method of making an acid-absorbing biosolid composition provides a method for the use of recycled materials to produce an acid-absorbing composition that may subsequently be recycled for use as a fertilizer after absorbing the acidic gas. The method includes the steps of: collecting a sewage sludge; drying the sewage sludge to remove water therefrom to form dried sludge; adding hydrochloric acid to the dried sludge to form a liquid intermediary product; heating the liquid intermediary product to produce a dried porous biomass; and mixing inorganic waste material with the dried porous biomass to produce an acid-absorbing biosolid composition. Thereafter, the acid-absorbing biosolid composition may be placed in a gas flow to absorb an acidic component therefrom; and then used as fertilizer following absorption of the acidic component from the gas flow.
- These and other features of the present invention will become readily apparent upon further review of the following specification.
- The method of making an acid-absorbing biosolid composition provides a method for the use of recycled materials to produce an acid-absorbing composition that may subsequently be recycled for use as a fertilizer after absorbing the acidic gas. Initially, sewage sludge is collected. The sewage sludge forms the primary component of the recycled acid-absorbing biosolid composition. Preferably the sewage sludge should have a pH of about 4.0. If the collected sludge does not naturally have a pH of about 4.0, then the sewage sludge may be treated with an appropriate quantity of acid or base to bring the pH level to about 4.0.
- The sewage sludge is then dried to completely remove water therefrom. This forms a dried sludge product. The drying is preferably performed through the application of heat in a temperature range of about 600° C. to about 1,000° C. Following the drying of the sewage sludge to completely remove the water therefrom, hydrochloric acid is added to the dried sludge to form a liquid intermediary product. The treatment with the hydrochloric acid, or any other suitable type of acid, may include stirring or any other suitable type of agitation required to adequately mix the acid with the sludge. This mixing is preferably performed until such time as the pH of the mixture assumes a steady value of between about 1.0 and 4.0. The liquid intermediary product is then, once again, heated to produce a dried porous biomass. The hydrochloric acid is added to increase and activate pores in the dried sludge. These pores are used in the absorption of acidic pollution gases.
- The dried porous biomass is mixed with an inorganic waste material to produce the acid-absorbing biosolid composition. Preferably, the inorganic waste material constitutes about 45 wt % of the acid-absorbing biosolid composition. The inorganic material may be magnesium waste, calcium waste, iron waste, iodine waste, rocks, sand, or combinations thereof. In addition to the inorganic waste material, organic waste materials, such as wood powder, may also be added. It should be understood that any suitable type of waste material may be utilized, such as recyclable wastes produced by distillation plants.
- In use, the acid-absorbing biosolid composition is placed in a gas flow to absorb an acidic component therefrom. An example of such use is placing the acid-absorbing biosolid composition in a wet gas flow and extracting a sulfur-containing component from the wet gas flow, such as hydrogen sulfide or sulfur dioxide. The acid-absorbing biosolid composition oxidizes the sulfur-containing gases, forming organic and inorganic sulfates of the type used in fertilizers. Following absorption of the acidic component from the gas flow, the acid-absorbing biosolid composition may be used as a fertilizer.
- It is to be understood that the present invention is not limited to the embodiments described above, but encompasses any and all embodiments within the scope of the following claims.
Claims (11)
1. A method of making an acid-absorbing biosolid composition, comprising the steps of:
collecting sewage sludge;
drying the sewage sludge to remove water therefrom to form dried sludge;
adding an acid to the dried sludge to form a liquid intermediary product;
heating the liquid intermediary product to produce a dried, porous biomass; and
mixing inorganic waste material with the dried porous biomass to produce an acid-absorbing biosolid composition.
2. The method of making an acid-absorbing biosolid composition as recited in claim 1 , further comprising the step of adjusting the sewage sludge to a pH of about 4.0 prior to said drying step.
3. The method of making an acid-absorbing biosolid composition as recited in claim 2 , wherein said step of adding the acid to the dried sludge comprises adding hydrochloric acid to the dried sludge to form the liquid intermediary product.
4. The method of making an acid-absorbing biosolid composition as recited in claim 3 , wherein the hydrochloric acid is dilute hydrochloric acid.
5. The method of making an acid-absorbing biosolid composition as recited in claim 1 , wherein said step of drying the sewage sludge comprises heating the sewage sludge to a temperature between about 600° C. and about 1,000° C.
6. The method of making an acid-absorbing biosolid composition as recited in claim 1 , wherein said step of mixing the inorganic waste material with the dried porous biomass comprises adding the inorganic waste material to the dried porous biomass so that the inorganic waste material constitutes about 45 wt % of the acid-absorbing biosolid composition.
7. The method of making an acid-absorbing biosolid composition as recited in claim 1 , wherein the inorganic waste material comprises at least one material selected from the group consisting of magnesium waste, calcium waste, iron waste, iodine waste, rocks, and sand.
8. The method of making an acid-absorbing biosolid composition as recited in claim 1 , further comprising the step of adding organic waste material to the dried porous biomass.
9. The method of making an acid absorbing biosolid composition as recited in claim 8 , wherein said step of adding the organic waste material to the dried porous biomass comprises adding wood powder to the dried porous biomass.
10. A method using an acid-absorbing biosolid composition prepared according to claim 1 , comprising the step of placing the acid-absorbing biosolid composition in a gas flow to absorb an acidic component therefrom.
11. A method of recycling the used acid-absorbing biosolid composition according to claim 10 , comprising the step of recycling the acid-absorbing biosolid composition as fertilizer following absorption of the acidic component from the gas flow.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/275,153 US20130091913A1 (en) | 2011-10-17 | 2011-10-17 | Method of making an acid-absorbing biosolid composition |
| US13/584,344 US8545777B2 (en) | 2011-10-17 | 2012-08-13 | Method of making an acid-absorbing biosolid composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/275,153 US20130091913A1 (en) | 2011-10-17 | 2011-10-17 | Method of making an acid-absorbing biosolid composition |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US13/584,344 Continuation US8545777B2 (en) | 2011-10-17 | 2012-08-13 | Method of making an acid-absorbing biosolid composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20130091913A1 true US20130091913A1 (en) | 2013-04-18 |
Family
ID=48085048
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US13/275,153 Abandoned US20130091913A1 (en) | 2011-10-17 | 2011-10-17 | Method of making an acid-absorbing biosolid composition |
| US13/584,344 Expired - Fee Related US8545777B2 (en) | 2011-10-17 | 2012-08-13 | Method of making an acid-absorbing biosolid composition |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US13/584,344 Expired - Fee Related US8545777B2 (en) | 2011-10-17 | 2012-08-13 | Method of making an acid-absorbing biosolid composition |
Country Status (1)
| Country | Link |
|---|---|
| US (2) | US20130091913A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8968440B1 (en) * | 2014-02-05 | 2015-03-03 | Phosfix Fertilizer & Soil Amendment LLC | Fertilizer production |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888696B (en) * | 2015-04-29 | 2017-05-03 | 北京绿洁美科技有限公司 | Preparation method of defluorination material based on biomass solid wastes |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050039508A1 (en) * | 2003-05-27 | 2005-02-24 | Burnham Jeffrey C. | Organic recycling with metal addition |
| WO2006091645A2 (en) * | 2005-02-23 | 2006-08-31 | Blue Water Investments | Manufacturing of bioorganic-augmented high nitrogen-containing inorganic fertilizer |
| US8192519B2 (en) * | 2005-03-09 | 2012-06-05 | Vitag Corporation | Beneficiated, heat-dried biosolid pellets |
| US7476372B2 (en) * | 2006-06-28 | 2009-01-13 | Holloman Corporation | Flue gas scrubbing process utilizing biosolids |
| MX2009001945A (en) * | 2006-08-23 | 2009-04-14 | Carbon Solutions Inc | Acid-impregnated activated carbon and methods of forming and using the same. |
| WO2008101250A1 (en) * | 2007-02-16 | 2008-08-21 | Vitag Corporation | Process for treating sludge and manufacturing bioorganically-augmented high nitrogen-containing inorganic fertilizer |
-
2011
- 2011-10-17 US US13/275,153 patent/US20130091913A1/en not_active Abandoned
-
2012
- 2012-08-13 US US13/584,344 patent/US8545777B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8968440B1 (en) * | 2014-02-05 | 2015-03-03 | Phosfix Fertilizer & Soil Amendment LLC | Fertilizer production |
Also Published As
| Publication number | Publication date |
|---|---|
| US20130091914A1 (en) | 2013-04-18 |
| US8545777B2 (en) | 2013-10-01 |
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