High Solid-Loading Pretreatment/Saccharification Tests with CaCCO (Calcium Capturing by Carbonation) Process for Rice Straw and Domestic Energy Crop, Erianthus arundinaceus

Masakazu Ike; Rui Zhao; Min-Soo Yun; Riki Shiroma; Seiko Ito; Ying Zhang; Ying Zhang; Mitsuhiro Arakane; Muhammad Imran Al-Haq; Junko Matsuki; Jeung-Yil Park; Mitsuru Gau; Kenichi Yakushido; Minoru Nagashima; Ken Tokuyasu

doi:10.5458/jag.jag.JAG-2013_002

Regular Papers

High Solid-Loading Pretreatment/Saccharification Tests with CaCCO (Calcium Capturing by Carbonation) Process for Rice Straw and Domestic Energy Crop, Erianthus arundinaceus

Masakazu Ike, Rui Zhao, Min-Soo Yun, Riki Shiroma, Seiko Ito, Ying Zhang, Ying Zhang, Mitsuhiro Arakane, Muhammad Imran Al-Haq, Junko Matsuki, Jeung-Yil Park, Mitsuru Gau, Kenichi Yakushido, Minoru Nagashima, Ken Tokuyasu

Author information

Masakazu Ike
Carbohydrate Laboratory, National Food Research Institute (NFRI), National Agriculture and Food Research Organization (NARO)
Rui Zhao
Carbohydrate Laboratory, National Food Research Institute (NFRI), National Agriculture and Food Research Organization (NARO)
Min-Soo Yun
Carbohydrate Laboratory, National Food Research Institute (NFRI), National Agriculture and Food Research Organization (NARO)
Riki Shiroma
Carbohydrate Laboratory, National Food Research Institute (NFRI), National Agriculture and Food Research Organization (NARO)
Seiko Ito
Carbohydrate Laboratory, National Food Research Institute (NFRI), National Agriculture and Food Research Organization (NARO)
Ying Zhang
Carbohydrate Laboratory, National Food Research Institute (NFRI), National Agriculture and Food Research Organization (NARO)
Ying Zhang
Carbohydrate Laboratory, National Food Research Institute (NFRI), National Agriculture and Food Research Organization (NARO)
Mitsuhiro Arakane
Carbohydrate Laboratory, National Food Research Institute (NFRI), National Agriculture and Food Research Organization (NARO)
Muhammad Imran Al-Haq
Carbohydrate Laboratory, National Food Research Institute (NFRI), National Agriculture and Food Research Organization (NARO)
Junko Matsuki
Carbohydrate Laboratory, National Food Research Institute (NFRI), National Agriculture and Food Research Organization (NARO)
Jeung-Yil Park
Carbohydrate Laboratory, National Food Research Institute (NFRI), National Agriculture and Food Research Organization (NARO)
Mitsuru Gau
Forage Crop Breeding Unit, National Agricultural Research Center for Kyushu Okinawa Region, NARO
Kenichi Yakushido
Biomass Research Coordinator, NARO Headquarters, NARO
Minoru Nagashima
Technical Supervisor, NFRI, NARO
Ken Tokuyasu
Carbohydrate Laboratory, National Food Research Institute (NFRI), National Agriculture and Food Research Organization (NARO)

Keywords: calcium-capturing-by-carbonation (CaCCO) process, herbaceous lignocellulosics, rice straw, Erianthus arundinaceus, continuous wet milling

JOURNAL FREE ACCESS FULL-TEXT HTML

2013 Volume 60 Issue 4 Pages 177-185

DOI https://doi.org/10.5458/jag.jag.JAG-2013_002

Browse “Advance online publication” version

Details

Abstract

The CaCCO process (Park et al., 2010), a sugar platform for herbaceous lignocellulosics, was modified and evaluated for fermentable-sugar recovery in solution, using rice straw (RS) as well as stems and leaves of Erianthus arundinaceus (ER), one of the strategic energy crops in Japan. Continuous wet milling of a mixture of feedstock, water and Ca(OH)₂, with a weight ratio of 3/7/0.3, was adopted, not only to evaluate the applicability for wet feedstocks, but also for simultaneous Ca(OH)₂ mixing with the milled feedstocks. We also applied low temperatures of 95-100°C for the alkali pretreatment to save energy. Enzymatic-saccharification tests were performed for the pretreatment slurries from 10 kg feedstocks for 72 h at 40°C under a CO₂-pressurized atmosphere at 0.9 MPa with high-solid loadings of 28.4% (w/w) for RS and 27.8% (w/w) for ER. These tests successfully solubilized 80.6% (RS) and 68.1% (ER) of the total glucose- and xylose residues in the solids. Following centrifugation, the solubilized-sugar concentrations in the recovered solutions were 16.9% (w/v) for RS and 15.5% (w/v) for ER. Thus, we demonstrated that the CaCCO process could be a simple and flexible platform for preparation of dense sugar solutions from dry- and wet feedstocks, which could stimulate a new agricultural bio-industry for vitalizing rural areas.

Corresponding author

Register with J-STAGE for free!