A co-beneficial system using aquatic plants: bioethanol production from free-floating aquatic plants used for water purification.

A co-beneficial system using aquatic plants: bioethanol production from free-floating aquatic plants used for water purification.

Water science and technology : a journal of the International Association on Water Pollution Research (2013-06-12)

S Soda, D Mishima, D Inoue, M Ike

摘要

A co-beneficial system using constructed wetlands (CWs) planted with aquatic plants is proposed for bioethanol production and nutrient removal from wastewater. The potential for bioethanol production from aquatic plant biomass was experimentally evaluated. Water hyacinth and water lettuce were selected because of their high growth rates and easy harvestability attributable to their free-floating vegetation form. The alkaline/oxidative pretreatment was selected for improving enzymatic hydrolysis of the aquatic plants. Ethanol was produced with yields of 0.14-0.17 g-ethanol/ g-biomass in a simultaneous saccharification and fermentation mode using a recombinant Escherichia coli strain or a typical yeast strain Saccharomyces cerevisiae. Subsequently, the combined benefits of the CWs planted with the aquatic plants for bioethanol production and nutrient removal were theoretically estimated. For treating domestic wastewater at 1,100 m(3)/d, it was inferred that the anoxic-oxic activated sludge process consumes energy at 3,200 MJ/d, whereas the conventional activated sludge process followed by the CW consumes only 1,800 MJ/d with ethanol production at 115 MJ/d.

材料

产品编号

品牌

产品描述

E7023

Sigma-Aldrich

乙醇，Pure 200纯度, Molecular Biology

459844

Sigma-Aldrich

纯乙醇, 200 proof, ACS reagent, ≥99.5%

459828

Sigma-Aldrich

纯乙醇, 200 proof

493546

Sigma-Aldrich

纯乙醇, 200 proof, meets USP testing specifications

459836

Sigma-Aldrich

纯乙醇, 200 proof, anhydrous, ≥99.5%

E7148

Sigma-Aldrich

乙醇，Pure 190纯度, for molecular biology

493511

Sigma-Aldrich

纯乙醇, 190 proof, ACS spectrophotometric grade, 95.0%

51976

Sigma-Aldrich

酒精, BioUltra, Molecular Biology, ≥99.8%, (absolute alcohol, without additive, A15 o¹)

270741

Sigma-Aldrich

酒精试剂, denatured, suitable for HPLC

362808

Sigma-Aldrich

酒精试剂, reagent grade

PHR1070

Supelco

无水乙醇, Pharmaceutical Secondary Standard; Certified Reference Material

493538

Sigma-Aldrich

纯乙醇, 190 proof, meets USP testing specifications

187380

Sigma-Aldrich

乙醇，变性, denatured, reagent grade

02483

Supelco

酒精, standard for GC

E-029

Supelco

乙醇-50标准液 CRM, 50 mg/dL in H₂O, ampule of 10 × 1.2 mL, certified reference material, Cerilliant^®

E-033

Supelco

乙醇-300标准液 CRM, 300 mg/dL in H₂O, ampule of 10 × 1.2 mL, certified reference material, Cerilliant^®

277649

Sigma-Aldrich

酒精试剂, anhydrous, ≤0.003% water

E-040

Supelco

乙醇-10标准液 CRM, 10 mg/dL in H₂O, pack of 10 × 1.2 mL ampules, certified reference material, Cerilliant^®

E-030

Supelco

乙醇-80 标准液 CRM, 80 mg/dL in H₂O, ampule of 10 × 1.2 mL, certified reference material, Cerilliant^®

E-031

Supelco

乙醇-100（10支/盒)标准液 CRM, 100 mg/dL in H₂O, ampule of 10 × 1.2 mL, certified reference material, Cerilliant^®

32221

Sigma-Aldrich

酒精, puriss. p.a., absolute, ≥99.8% (GC)

676829

Sigma-Aldrich

酒精试剂, anhydrous, ≤0.005% water

48075

Supelco

Ethanol 溶液, certified reference material, 2000 μg/mL in methanol

E-053

Supelco

乙醇-500标准液 CRM, 500 mg/dL in H₂O, ampule of 10 × 1.2 mL, certified reference material, Cerilliant^®

29221

Sigma-Aldrich

酒精, tested according to Ph. Eur.

E2385

Supelco

10% (v/v) 乙醇标准品, 10 % (v/v) in H₂O, analytical standard

E-041

Supelco

乙醇-150, 150 mg/dL in H₂O, ampule of 10 × 1.2 mL, certified reference material, Cerilliant^®

E-032

Supelco

乙醇-200 (10支/盒)标准液 CRM, 200 mg/dL in H₂O, ampule of 10 × 1.2 mL, certified reference material, Cerilliant^®

E-036

Supelco

乙醇-400（10支/盒)标准液 CRM, 400 mg/dL in H₂O, ampule of 10 × 1.2 mL, certified reference material, Cerilliant^®

E-034

Supelco

乙醇校准套装, ampule of 10 × 1.2 mL, certified reference material, Cerilliant^®